Archive for 2008

Material Elixir for Oily Water

Monday, December 29th, 2008

Oil and water do mix - all too often. And they’re not so easy to separate. Just ask the research scientists trying to develop next-generation water-filtration technologies to do it.
But with the 21st century toolsets of nanotech and chemistry, they promise to overcome vexing problems of cost-effectively removing oil agents from drinking water.
Researchers at Purdue University have developed a new, durable membrane material that does double duty: it separates oil from water (at a 98 percent rate) and cleans itself to prevent clogs.

Those kinds of purification numbers and characteristics offer a unique filtration material well suited for environmental cleanup, water purification and industrial applications.

The material is a modified polyethylene glycol. Water molecules are attracted to it and when they pass through, the oil molecules get trapped.

But the oil doesn’t stick and can later be skimmed off in a self-cleaning flush, making for longer life. The Purdue researchers also say the same technology could be used to create antifogging goggles and self-cleaning eyeglasses by not allowing water to form beads on surfaces.

A new way to separate oil and water.
(Photo: Purdue School of
Materials Engineering
)

The material is still in the experimental stage but it could be built into an experimental cross-filtration device that does not require a lot of energy to push the water through it. This is a big shortcoming to many filtration systems today.

There is also the potential to use the technology in a gravity-fed system, which would be suitable for remote villages and rural environments without electricity.

To date, the researchers have only tested diesel or hexadecane fuel but the team has plans to test other oils such as benzene toluene zylene.

Meanwhile, an MIT research team led by chemical engineer Robert Cohen and mechanical engineer Gareth McKinley has created what it claims are the first “superoleophobic,” or oil-repellant surfaces. They used a polymer developed by the Air Force that contains large numbers of oil-repelling fluorine groups. In order to transform the material into oil resistance, the MIT researchers used lithography to pattern the polymer with overhanging microstructures. In doing so, they gave the material air pockets, which helps suspend liquids and prevent them penetrating to the surface.

The MIT material has extremely low surface energy, in fact lower than the Purdue team’s material. But Purdue’s material has shown superior performance at cleaning oil from the surface of the material.

“Our materials provide for a flat surface where water ‘sees’ a wettable surface and the oil ‘sees’ a non-wettable fluorinated surface,” said Jeff Youngblood, assistant professor of materials engineering at Purdue University. “This is pretty good because if you don’t modify the glass filters with our material, essentially all the oil goes through. If you modify it with our material, then almost none of the oil goes through.”

All of which should eventually become valuable in long-term water-infrastructure developments like the Water Infrastructure Network, which is a a coalition of locally elected officials, drinking water and wastewater service providers, state environmental and health administrators, engineers and environmentalists. The group is urging water-industry professionals to contact their representatives in Congress to push passage of a $20 billion package for water infrastructure. Lee Bruno

Turning On Solar Thermal Power

Monday, December 22nd, 2008

An interview with Dr. David Mills, Chief Scientific Officer and Founder of Ausra:

Dr. David Mills has worked in the alternative energy field for over 30 years. He was born and raised in Canada and educated in Australia. In his University of Sydney lab he developed and licensed the evacuated-tube solar water heater technology, which consists of about 60 percent of the world’s solar collectors and created an advanced double cermet selective absorber coating, which is used in tube receivers by Chinas largest solar company. He also invented or co-invented the Prism solar concentrator (Sol X) and the S evacuated tube reflecting system (Solahart). He’s saved his best for last however, with his pioneering Compact Linear Fresnel Reflector (CLFR) technology, which is what is presently being manufactured for utility-scale thermal solar power.

Solar thermal uses fields of special mirrors to shine the sun’s energy on water-filled piping, which then boils and turns it into steam to run turbines that produce electricity. There is no pollution or use of photovoltaics (solar panels). This technology is literally changing the way our planet will supply its every increasing need for energy free of fossil fuels or dangerous by-products. It provides green jobs, helps stop global warming, is cost effective and can be on the ground running within the next few years. All of North America and Europe’s electrical power needs (day and night) can be generated with this system, by using a desert land area less than 92 by 92 square miles. The parts for solar thermal power plants will soon be available for the world’s leading polluters (China, India, Europe and the U.S.), as well as other continents.
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Ausra’s revolutionary solar field design consists of several mirrors sharing a receiver. This lowers the cost of the mirrors while greatly reducing overall plumbing required.

Dr. Mills and his company (Ausra) have already signed contracts with one of the largest power companies in North America (Pacific Gas & Electric) to deliver 177 megawatts; are building the first U.S. manufacturing plant for solar thermal power systems in Las Vegas, Nevada; and plan on having a pre-commercial demonstration project up and running by the end of this year. One of the other largest utility companies in The States (Florida Power & Light) and its parent (FPL Group), have also taken a close look at Dr. Mills solar thermal technology. Their chairman and CEO, Lewis Hay, states, “As the operator of the largest solar energy facility in the world, we view this breakthrough technology as a promising option.”

I recently interviewed Dr. Mills at Ausra’s headquarters in Northern California. He shared some of his thoughts and insights about the environment, our energy needs and the quickest way to transform our fossil fuel economy to a solar and all-electric society.

Gabriel Constans (GC): It appears that the technology you are using at your present and future power plants can literally change the world and the way it obtains its energy needs. Do you realize that you are someone who, in many respects, could be seen as one of the great scientists and innovators of the century?

Dr. David Mills (DM): This kind of technology will certainly change how we produce and generate energy. This technology can be the big gorilla of generating energy. Presuming the electrified auto sector, it will soon be electricity and oil, not the other way around. There are already 3 battery companies that have batteries which can recharge electric car batteries in minutes. If you put that together with generating technology which is readily available on the grid, you have the ingredients to say we don’t need oil anymore, we don’t have to import oil.

GC: Is there enough private, organizational and government interest to adopt this technology?

DM: These things are world changing in many ways. The common term would be disruptive technology. It isn’t necessarily that way, in a negative fashion, but it does change things. It is positive disruption, though there will be winners and losers. If you look at the rail traffic in the U.S., 80% of it involves carrying fuel. If you don’t need it to carry fuel anymore, than you’re going to have to re-evaluate that industry. On the other hand, if you look at glass (used for solar reflecting mirrors, parts and tubing), it will probably double or triple that industry. Steel will stay about the same, but turbine production will be bigger than ever. There will be a lot of impacts on the economy, but in the end, in terms of employment and energy efficiency, the economy will be a superior economy.

GC: At what point are you in the process? When will you figuratively turn on the switch?

DM: We have developed a proprietary system to store energy. We’ll be developing and demonstrating this storage unit at a pre-commercial test facility in California this year. We anticipate that we’ll have energy storage commercialized by 2010. Having a turbine built and delivered is presently between 2-3 years. It’s the turbines which may cause some delay, not the know-how or technology. Similar companies, (such as Sterling) are facing the same issue. What convinces people is a plant on the ground. One can wave their arms around a lot at conferences, but the real deal is to have it working, having it connected to utilities and having it operating reliably. At that point people will get it.

Dr. David Mills

GC: How is thermal solar technology being accepted in the rest of the world?

DM: The entire field is going to progress very quickly. The greatest development is taking place right now, especially in the U.S. In Europe that isn’t so much the case. They set up a system called “feed in law” which is giving a comfortable amount of income to companies. They could continue to take the old designs and run with it for security. Here (in the U.S.) the market is tougher and more competitive, which means costs are kept down, so were seeing real development going on here. In my opinon, they aren’t lowering the feed in laws fast enough in Europe. For it to work around the world, you have to set up parallel corporations that can be competing in markets using these technologies. There are already other companies in the U.S., as well as other countries and companies that are interested. This will happen, but to manage this great of growth is going to be a serious challenge. There are many places that need electricity for social betterment, but social betterment is not the same thing as environmental rescue. They both have to be done. It’s a matter of prioritization.

GC: How did this all come about?

DM: I came up with this design and system independently, but once I did research I discovered that at least 2 other groups had attempted to go down this path before. One in the 1960’s built a small unit, including an Italian that built one in Southern France and another in the U.S. that tried but didn’t get very far with funding. We basically resurrected the idea. Other companies that are doing similar projects descended from us in one way or another. They’re all people that were involved with us or came in contact with us.

GC: What will it take to get power from companies using solar thermal technology to the public?

DM: We don’t have to put in an entirely new infrastructure for this technology, in the short term. In about 10 years you’ll get to the point were you need new power lines and new cross-continental low-loss DC lines to get that power to heavy population centers, like in the North East. People are going to have to get used to the idea that just like we have a trans-continental highway system, we need a trans-continental transmission system. Similar discussions are going on in Europe, such as the transmission of power from North Africa into Europe. We can build these things very quickly. What is generally the limitation is the present infrastructure, which people tend to like to run until it dies. Most of the existing plants will be gone in 40 years. If we decide on a Marshall Plan for energy, it’s possible to have it completed in 25 years. It would have to be global and would be the biggest thing ever. It would be an infrastructure that benefits everyone all the time. No matter what happens, its going to be a profitable exercise for people.

GC: Aren’t people reluctant to trust large corporations and power companies? Isn’t that why there has been such a push over the last 20 years for people to be independent and to have individual sources of energy for their own home or business?

DM: People sometimes confuse their dream of autonomy and independence from utility payments with the desire to be free of entanglements. The fact is, our economy involves a lot of people, a lot of transport, there is a lot of industry and community activity that goes on. It isn’t just an individual home owner off by themselves. The home is not the major part of electricity consumption or source of pollution. We shouldn’t be afraid of a utility scenario. From a practical point of view, it’s easier to put in a number of large plants very quickly, compared to convincing everyone individually that this is a good idea. In the end, both kinds of societies are possible, but I think this one can go much more quickly. It’s not to say the small scale won’t work, it’s simply a matter of time. Right now, we can change the amount of green electrons flowing through everyone’s circuits instead of a few. The source will be different, though the electricity is the same and we don’t have to change a lot of infrastructure. People shouldn’t be afraid of the large utility companies just because they’re large.

It only takes about 92 miles by 92 miles of a solar thermal plant to fulfill the energy requirements for North America and Europe. That’s not big. That’s smaller than a mining footprint for coal. It’s a benign system. People living next to this type of technology don’t mind them. We’re finding its more acceptable than wind power. Thermal solar power already exists. We can also store the energy created, so it carries us throughout the year and in all kinds of weather. It’s possible here and now and throughout the world.

The Nanocantilever Toxin Alert

Tuesday, December 16th, 2008

Research teams at Clemson, UCLA and the University of Southampton in the UK are pioneering novel nanoscale sensors for detecting environmental toxins and other harmful airborne chemical and biological agents.

At Clemson, researchers have developed nanoscale cantilevers that potentially could be placed in a handheld device and used for real-time chemical alerts in detecting harmful gases on the battlefield, in healthcare and even at home. The nanoscale cantilevers look like tiny diving boards under an electron microscope.

Researchers have found that the cantilevers can vibrate much like a guitar string. By measuring the amplitude and frequency under different conditions, the scientists believe they can create reliable sensors to detect toxins.


The nano-scale cantilever.
(Photo: Clemson)

These electromechanical sensors have been shown to measure changes in humidity and temperature. Researchers think the cantilevers can be shrunk down to the nanoscale and placed in electronic devices as a single tiny chip.

At UCLA researchers have been working on a nanoscale sensor for more than five years. It is a single molecule less than 20 nanometers long that can be used in early detection of genetic diseases.

What’s unique about it is that it’s activated by a single molecule. Researchers say that when a target molecule binds to the probe in the sensor, the probe molecule changes shape and, in its new conformation, pulls on the sensor.

Researchers say the single-molecule sensor could eventually become a component in a lab-on-a-chip technology for doing chemical analysis. The motion of the sensor is detected by an optical technique called “evanescent wave scattering,” which analyzes light that leaks out behind a reflecting mirror. This evanescent wave can be used to sense precisely the position of an object “beyond” the mirror.

And finally, scientists at the campus of the University of Southampton, which pioneered optical networking technologies, are doing some cutting-edge work at its school of electronics and computer science. There researchers are developing a low-power sensor in silicon that has potential for use in biosensing and environmental-monitoring applications.

What’s unique about the team’s approach is that they’re cointegrating single-electron transistors and nano-electro-mechanical systems on a common silicon technology platform.

The team is developing the single-electron transistor with a unique suspended silicon nanobridge, which will work as an extremely sensitive detector for biological and chemical molecules. And this is said to be the first time that anyone has combined these two nanotechnologies to develop a smart sensor.

Looks like the future home, business and public meeting places will one day be adorned with sensors. Let’s hope companies manufacturing appliances for the home and business are keeping abreast of these intelligent sensors and how they can save time, money and lives. –Lee Bruno

Upgrading the Electric Grid

Tuesday, December 9th, 2008

For years engineers and utilities have been waxing on and on about the future of the utility grid and the economic importance of having a smarter, more flexible infrastructure for distributing electricity. But the conversation goes silent when it comes to the price tag: $1.5 trillion.

There’s no doubt that a radical improvement needs to be made to the aged infrastructure that carries electricity from generation plants to homes and businesses. Some places on the grid, like stretches between L.A. and San Diego, are as congested as the freeways at rush hour.

This is where energy intelligence comes in. Energy intelligence is often defined as a subsector of traditional energy efficiency, focused on utility-scale distribution, grid connectivity and two-way communication with end users and devices. It becomes part of the nervous system that helps connect and make the grid more sentient.

By using energy intelligence technologies, grid-connected utilities and providers will be able to manage their generation and supply in accordance with end-user usage patterns. And that means power is distributed more intelligently to minimize load and enable active power-distribution management to optimize resources.
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It may cost the U.S. $1.5 trillion to upgrade to a smart grid.
(Source: Federal Energy Regulatory Commission)

With the new infrastructure in place, customers can make informed decisions about their energy use, so they can purchase it at times when it’s cheapest. The way to make much of that happen is with smart meters and power management dispatched to homes and businesses where they will deliver savings and improved efficiency.

Trouble is, the next phase of bringing solar and wind energy sources online will require more engineers trained in power electronics. Unfortunately, power electronics was taught widely at universities 20-30 years ago but now few teach it.

“Power electronics is really going to be the critical area, along with interface technologies for converting AC current to DC and vice versa,” says Dick DeBlasio, laboratory program manager for electricity programs at the National Renewable Energy Labs in Boulder, Colorado.

It is part of an evolutionary process that aims to bring a grid built on 50-year-old analog technology up to speed with the 21st century shift to digital. “Interoperability is really the big part of the focus for researchers and engineers,” says DeBlasio. Part of the problem is where to place sensors in buildings and on the distribution system.

The control and monitoring of the smart grid it is not easily done, as an estimated 10-15 percent of energy is lost in delivery. Another critical item for the future of the grid is storage and government R&D in this area has been abysmal for a long time.

The targeted areas for smart-grid R&D activities are in four basic categories: architecture and communication standards; monitoring and load-management technologies; monitoring and control for demand-side management; advanced components and operating concepts. . “We have a chance to be an early adopter of this technology,” said John Kunhart, managing director and co-founder of American River Ventures in Roseville, CA., at a recent panel discussion on Energy Intelligence: Investment, Risk and Regulation for Advanced Connectivity and Infrastructure sponsored by the VC Task Force.

Standardized architectural designs and interfaces are important to stimulate developments toward a smart grid. As part of that effort, universal standards have been proposed, like the IEEE 1547 series of standards on interconnecting distributed resources with electric power systems by the National Renewable Energy Laboratory.

So what will it take for energy intelligence to reach its potential and simultaneously reward investors? Successful growth in this area will require a detailed understanding and navigation of the complex interplay of risk mitigation, regulation and regulatory influence, and infrastructure development. –Lee Bruno

Electricity Powered Bikes

Monday, December 8th, 2008

The attention some of the electric automobile designs have attracted over the past few years has tended to take the focus away from bikes and motorcycles. But for every Volt or Tesla making a splash in the news, dozens of models of electricity powered two-wheelers have been selling by the thousands for years. In aggregate, millions of electricity powered bikes are already in use around the world.

Should anyone doubt the electric scooter industry is alive and well, if not already gone through several cycles of maturity, go to Alibaba.com and search under “Electric Scooters.” You will get links to an astonishing 6,903 products, ranging from Suzhou Rununion Motivity Co., Ltd., to Wuxi Beiyi Electric Bicycle Co., Ltd., to Taizhou Wangpai Automobile Industry Co., to Jiangsu Taler Science and Technology of Motor Vehicle Co., to Jiangsu Xinling Motorcycle Manufacturing Co. , and on, and on, and on, and on. And small wonder - you can plug them in at night, ride them to work during the day, they’re relatively inexpensive to purchase, and they’re considerably less expensive to operate.

Now that electric bikes, scooters and motorcycles are making sense not only on the streets of Shanghai but also on the streets of Silicon Valley, there are some relatively new entrants in this market based in California instead of China. One such company, ELV Motors, based in Santa Clara, in the heart of California’s Silicon Valley, manufactures mo-peds as well as scooters. Their UM 44L Electric Bicycle, which sells for $1,699, has a top speed of 15 miles per hour, and a range - not including range extension through pedaling - of 20 miles. And at 75 pounds, the bike is practical to pedal in flat terrain without battery power. ELV Motors manufactures seven models of mo-peds and scooters, including the E-1600 Electric Scooter, which at the price of $2,699 attains a top speed of 30 miles per hour and a range of 40 miles.

Another company, ZERO Motorcycles, is located in Santa Cruz, California, a coastal resort community which is a 30 minute drive south of the Silicon Valley through some of the most beautiful rolling hills of redwood forests anywhere. ZERO Motorcycles draws on Santa Cruz’s reputation as one of the original centers of mountain biking alongside their proximity to the technological saavy of Silicon Valley to develop the first ever off-road, all-electric dirt bike. Their Zero X model (specifications) delivers 23 horsepower of power and can accelerate from zero to 30 miles per hour in under two seconds. There is no transmission and the electric motor delivers constant torque of 50 ft-lbs. With a 18 pound frame and a total weight of only 140 pounds, ZERO claims their Zero X model has the highest power to weight ratio of any electric vehicle. With lithium ion batteries the motorcycle has a range of about 40 miles.
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The Zero X electric motorcycle goes zero to thirty in 2.0 seconds.
(Photo: ZERO Motorcycles)

An electric car with a mileage of 4.0 miles per kilowatt-hour would compare to a compact car with a mileage of 30 MPG. At $1.50 per gallon, that equates to $.05 per mile for the gasoline powered car, and at $.10 per kilowatt-hour, that equates to $.025 per mile for the electric powered car - half as much. To save money on gas, people are turning to motorcycles; to save even more money, they might consider the emerging electric motorcycle. With well established supply chains for electric scooters and mo-peds, and an electric dirt bike now available from ZERO Motorcycles, it is only a matter of time before street-legal, full sized electric motorcycles arrive. If the example from ZERO is any indication, these bikes will perform against their gasoline powered counterparts just as admirably as the early Teslas perform against their gasoline powered automobile counterparts.

The Elusive Innovation ROI

Thursday, December 4th, 2008

Let’s face it. The majority of tech companies have become obsessed with innovation and determined to use it whenever possible in marketing campaigns.

That’s because demonstrated leadership in the area of innovation signals to competitors and customers alike that your company possesses the right stuff.
The trouble is that measuring innovation is not easy. Which doesn’t mean people aren’t trying.

McKinsey Quarterly recently reported results of a global survey that it says reveals the companies getting the highest returns from innovation.
Among the interesting findings are: only 16 percent of the survey respondents say their companies don’t use metrics to assess innovation; and 45 percent don’t track the relationship between spending on innovation and shareholder value.

Another interesting finding from the survey is that companies place greater importance on metrics for outputs than for inputs. For those companies that do, the three most important metrics are externally focused: revenue growth, customer satisfaction and percentage of sales from new products or services.
That means there’s little interest in assessing the entire process of innovation. For anyone who has been a student of innovation management, that should raise a red flag, since it spells trouble for companies not minding the process. (See Toward a Discipline of Innovation.)

For those companies where innovation is viewed as the most important strategic priority, the top three metrics used to track innovation are: customer satisfaction, number of ideas in the pipeline and R&D spending as a percentage of sales.

In a separate study, published in late October, the journal Marketing Science cited evidence that leading the list of the world’s most innovative countries are Japan and the Nordic region, with the United States coming in sixth.

The researchers evaluated 31 countries based on the time it takes for new products to take off. Researchers analyzed 16 different product categories over a time span of 50 years.

Looking past this economic downturn, it seems logical that the companies keeping on track with a strong innovation culture and mindful of its strategic importance are most likely to have the capacity and wherewithal to come out ahead. –Lee Bruno

India’s Jatropha Tussle

Monday, December 1st, 2008

The Indian government has welcomed biofuels with open arms. Faced with a rapidly growing economy, the world’s second-largest population and an eye-watering fuel import bill, finding a renewable domestic power source has become a top priority.

The country’s recently-revised national biofuel policy, announced in September 2008, sets out the government’s intentions in black-and-white: to produce 20 per cent of the country’s diesel from crops by 2017, primarily from plantations of jatropha (Jatropha curcas). This means that the oilseed-bearing shrub, already introduced in some states, needs to be planted on an additional 14 million hectares of the country’s so-called ‘wasteland’. This has ignited fierce debate: supporters see the move as the solution to the fuel-versus-food conundrum, while critics are fearful that millions of peasants, who rely on these lands, will lose out.

Wasteland - a misnomer

A far cry from the post-industrial ‘brown field’ sites familiar to planners in the developed world, India’s wastelands have historical resonance. Classified in colonial times as areas that could not be cultivated and which were, therefore, unable to produce revenue, everything from forests to semi-jungle to wetlands fell into the category of ‘wasteland’. But, quite unlike the idea of a barren wilderness, these vast areas - comprising about 25 percent of India’s landmass - are more appropriately described as marginal lands, and have supported millions of the country’s poorest people for centuries.

‘Wastelands’ are a vital source of
fodder for poor rural livestock keepers.
(Photo: WREN Media)

Traditionally, local communities have looked after these lands as common resources, coming to depend on them for food, fodder, fuel wood and medicine. In terms of their day-to-day importance, the figures speak for themselves: around 20 percent of poor households’ income and over 60 percent of their fuel wood come from common property resources. In the mixed farming systems of the country’s semi-arid regions, some three-quarters of people depend on the commons for grazing. Nationwide, the India-based NGO Foundation for Ecological Security (FES) estimates that the commons contribute up to US$5 billion to poor rural households. And, with investment and proper management, the organisation believes the commons could supply a quarter of the country’s fodder needs. These commons also perform important ecological functions, providing habitats for wildlife, harbouring rainwater and absorbing greenhouse gases.

For whose benefit?

India’s common lands have been under threat for at least the past half-century, with between 25-50 per cent already lost due to population pressure and increasing degradation. Little wonder the proposed jatropha plantations are contentious. “By pursuing the energy security of the few - the middle classes and the rich - we are compromising the livelihood security of the poor,” laments Subrata Singh of FES.

The government has tried to find a win-win solution. In an attempt to help the poor share the rewards of the country’s anticipated biofuel boom, the expansion of jatropha production is taking place through the National Rural Employment Guarantee Scheme (NREGS). Under proposed plans, local communities will be paid to plant, tend and harvest the crop on common land. But critics argue that once jatropha is in the ground, livelihoods will become irrevocably tied to the productivity of the crop and the stability of its market price.

While jatropha supporters point to the crop’s near-magical ability to tolerate harsh, drought-like conditions, others have suggested that official estimates of its productivity on suboptimal land have been exaggerated. If the crop fails to live up to expectations the poor will have traded access to precious land in return for neither food, fodder, fuel, medicine - nor a source of income. “Eventually, planting these areas with biofuels might force people from the land,” continues Singh. “We are concerned they might become ecological refugees and migrate to urban areas for their livelihoods.”

Jatropha farming on common land
has begun in Andhra Pradesh.
(Photo: WREN Media)

FES has been working with state governments to help communities achieve legal recognition for the wasteland commons. It has already assisted communities in six states to establish long-term leases over the areas they depend on and is promoting investment in land restoration through the NREGS. The organisation is also working with the South Asia Pro-Poor Livestock Programme to document the value of the commons to poor livestock keepers, to protect the land and to help other communities diversify into animal husbandry.

Despite progress in these areas, India is simply too large for FES to protect all the affected communities and jatropha plantations have already swallowed-up pockets of common land. Significantly, in the same month that the government unveiled its new biofuels target, state-run refinery Bharat Petroleum announced plans to invest US$480 million in jatropha production. The race for ‘wasteland’ is well underway.

This report originally appeared on the website of The New Agriculturalist and is republished here with permission.

The X-Games, Microbe Edition

Monday, November 24th, 2008

Rugged microbes equipped with a unique set of survival skills find high-temperature and acidic conditions a welcome home. And scientists have a peculiar fondness for these “extremeophiles,” freaks of nature that live outside the boundaries of normal existence. These are bugs that can grow in the harshest of conditions, from sulphuric acid to high-salt environments.

Part of the reason scientists are interested is extremeophiles potential to be put to work to produce next-generation cellulosic-based biofuels.

Sandia’s Rajat Sapra examines assays
for the screening of engineered enzymes.
(Photo: Sandia National Labs)

How? These microbes can perform feats that bioengineers till now only dreamed of. They offer, perhaps, the best hope to tear down rigid plant material without using specialized chemicals or high amounts of energy and, perhaps, one day to create new fuels to power autos and trucks. Scientists and engineers at Sandia National Labs are taking the lead in the effort.

“We are looking at extremeophiles that can thrive in high temperature and acidic conditions,” said Rajat Sapra, staff scientist and engineer with Sandia National Labs. “Bugs that can grow in sulphuric acid are of great importance because nature has already done all of the genetic customization and adaption. It saves scientists trying to create superbugs with these modified capabilities.”

Over the course of the next few years, Sandia scientists are planning on working with the three different parts of the cellulosic biofuel process, which include deconstruction technologies for breaking down cellulosic materials and engineering extremeophiles for pretreatment processes.

“What we look at in terms of processes is trying to streamline these extremeophiles,” says Sapra. “If you look at stonewashed jeans, that process is achieved through the use of a bacterial extremeophile.”

The world of biofuels and cellulosic ethanol comes down to a pretty simple equation. Cellulosic sugars are based on six carbon sugars, which is common among plants. The longer the length of the carbon chains, the more energy density is stored inside the plant material. The researchers explain energy density with a simple equation of one gallon of ethanol having the same energy density as 0.6 gallons of gasoline.

Trouble is all of that energy density is locked up pretty snugly in the cellulose and lignin materials of plant, which means you have to pay an energy or chemical cost to break it down to get at the rich density of energy. It isn’t the challenge of converting sugars to ethanol, it is how to break down the plant material into a mulch that can then provide sugars.

Sometimes missing from the big discussions about biofuel processing is the energy cost of getting the foodstuffs to the place where the fuel is going to be refined. It doesn’t make a lot of sense, for example, to transport large volumes of poplar trees from one region to another by truck.

That’s why scientists like Sapra are clear about the real Achilles’ heel for making biofuels economic and scalable. It comes down to looking at the entire process as an integrated one. And the key focus is taking into account the enormous scale of the process.

At the end of the day, the real answer for sustainable, economically viable biofuels resides in grasses and woody plants, instead of food crops. Agricultural waste is a starting point. Growing and extracting for corn stover and rice straw is all about converting waste plant material that would otherwise be burned into a high-energy-density material from which ethanol can be processed and refined.

There are three basic steps in biofuel production. First is taking the biomass and breaking it down. Second is deconstructing the material into polymers. Third is converting the sugars into fuels.

Researchers and engineers are focused on the goal of taking the entire conversion of biomass material into sugars and ethanol and doing it in one large vat or container. This is called consolidated bioprocessing and has obvious advantages over other approaches in both economics and efficiency.

Even though second-generation biofuels are still years off, the ability to harness the mysterious ways by which nature has solved extremeophiles’ problems of survival is surely going to be a boon to efficient fuel production. — Lee Bruno

Sundown for California

Monday, November 17th, 2008

Twenty-five years ago, along with another young journalist, I coauthored a book called California, Inc. about our adopted home state. The book described “California’s rise to economic, political, and cultural ascendancy.”

As relative newcomers at the time, we saw California as a place of limitless possibility. And over most of the next two decades, my coauthor, Paul Grabowicz, and I could feel comfortable that we were indeed predicting the future.

But much has changed in recent years. And today our Golden State appears headed, if not for imminent disaster, then toward an unanticipated, maddening, and largely unnecessary mediocrity.

Since 2000, California’s job growth rate - which in the late 1970s surged at many times the national average - has lagged behind the national average by almost 20 percent. Rapid population growth, once synonymous with the state, has slowed dramatically. Most troubling of all, domestic out-migration, about even in 2001, swelled to over 260,000 in 2007 and now surpasses international immigration. Texas has replaced California as the leading growth center for Hispanics.

Out-migration is a key factor, along with a weak economy, for the collapse of the housing market. Simply put, the population growth expected for many areas has not materialized, nor the new jobs that might attract newcomers. In the past year, four of the top six housing markets in terms of price decline have been in California, including Sacramento, San Diego, Riverside, and Los Angeles. The Central Valley towns of Stockton, Merced, and Modesto have all been awarded the dubious honors of the highest foreclosure rates in the nation during the past year.

Even with prices down, many of the most desirable places in California are also among the most unaffordable in the nation. Less than 15 percent of households earning the local median income can afford a home in L.A. or San Francisco. In Santa Barbara, San Diego, Oxnard, Santa Cruz, or San Jose, it’s less than a third. That’s about half the number who can buy in the big Texas or North Carolina markets. Moreover, state officials warned in October that they might have to seek as much as $7 billion in loans from the U.S. Treasury. This is a disappointing turn for a state that once saw itself as the harbinger of the future.

Not surprisingly, few Californians see a turnaround soon. In the most recent Field Poll in July, a record high 63 percent of Californians said they are financially worse off than they were a year ago, while a record low 14 percent described themselves as better off. Poll director Mark DiCamillo called it “the broadest sentiment of pessimism we’ve ever seen.”

Of course, California can still attract many newcomers, particularly young and ambitious people who dream of a career in Hollywood or Silicon Valley. The problem is that when you grow up and have failed to secure your own dotcom or television series, life in Texas, Arizona, North Carolina, or even Kansas starts looking better. According to real estate analysts, the only thing preventing the current outflow from being worse is that homeowners cannot sell their residences in order to move.

All of this suggests a historic slide of California’s role as a bastion of upward mobility. In 1946, Californians enjoyed the nation’s highest living standards and the third highest per-capita income, noted journalist John Gunther. As recently as the 1980s, Californians generally got richer faster than other Americans did. Now, median household income growth trails the national average while the already large divide between the social classes - often bemoaned by the state’s political left - grows faster than in the rest of the country.
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Can California recover the vitality that defines her heritage?

Today, notes a recent Public Policy Institute of California study, California has the 15th highest poverty rate in the nation. Only New York and the District of Columbia fare worse if the cost of living is factored in. Indeed, after accounting for cost of living, L.A., Monterey, and San Francisco counties - all places known for concentrations of wealth - have poverty populations of 20 percent. “San Francisco,” says historian Kevin Starr, a native of the city, “is a cross between Carmel and Calcutta.”

The Political Roots of the California Ascendancy

You can blame many factors for California’s fall from grace: too much immigration from poor countries, the impact of global competition on technology and aerospace industries, the end of the Cold War, failing schools, and the 12 years of political control by the Texas-centric Bushes. Yet other states have weathered similar storms and still gained ground on the Golden State.

The real problem lies in the decline of the state’s political culture. “Our society may be evolving spectacularly but our politics are devolving,” suggests Starr, the state’s most eminent historian. “California is in no way a role model for anyone from outside the state.”

For much of the 20th century, California - already blessed by climate, topography, and fertility - was also relatively well governed. California’s schools, universities, and infrastructure were considered among the finest anywhere. From the 1920s on, its prevailing ideology was a kind of business-like progressivism. Californians in both parties embraced the idea that government could be a positive force in the economic and social life of California. However, they also embraced the latest notions of scientific management. One report from the administration of California’s Republican Governor Hiram Johnson, produced in the early part of the 20th century, stated that the goal was “to systematize the business of the State of California.”

California’s state government laid the foundation for its remarkable ascendancy. Progressivism’s pragmatic orientation, the melding of science and technology into government, the large-scale investment in infrastructure, and a strong nonpartisan tradition produced spectacular results. In his famous book Inside USA in 1946, Gunther gushingly described California as “the most spectacular and most diversified American state … so ripe, golden.”

Another Republican California governor, Earl Warren, who served between 1943 and 1953, epitomized progressive virtues - pragmatic in policy, nonpartisan in approach, and activist in his manner. Later on, as the GOP became more conservative, the progressive mantle shifted to the Democrats. Under Governor Edmund G. “Pat” Brown, elected in 1958, the state continued with an aggressive program of public works, a rapid expansion of higher education, and the massive California Water Project.

Like his Republican progressive predecessors, Brown advocated civil rights for minorities but also promoted business interests, notably in real estate development, Hollywood, aerospace, and agribusiness. Equally important, the Democrat embraced the traditional good government principles of the progressives. Shortly after taking office, Brown initiated a thorough reorganization of state government, attempting to make it more businesslike. California, Brown himself noted, needed “to apply the latest concepts of management, organization, and cost control just as modern corporations have done.”

The End of the Progressive Era

By the mid-1960s, Brown’s traditional progressivism was being undermined by rising interest-group liberalism. State employees, left-liberal lobby groups, and minorities were demanding more and more from the governor. Fed up with ever-growing taxes and social spending, business interests became increasingly alienated. Once seen as a boon to the private sector, state government was becoming perceived by corporate interests as overly meddlesome and hostile.

Perhaps even more damaging was the cultural rift that developed. Many white middle- and working-class voters felt threatened by the rise of new militant minority and student groups. Riots at Berkeley and Watts deepened resentments against the university and African Americans, two linchpins of Brown’s support.

In the 1966 gubernatorial election, Ronald Reagan smashed Brown and the remnants of the old progressive coalition. The former actor captured both business support and grassroots votes in previously Democratic-leaning areas in suburban L.A. and the Central Valley. Numerous interviews conducted with his closest confidants at the time make clear that they did not intend to impose a conservative social agenda, but hoped to slow the regulatory regime and restore order on the state’s campuses and ghetto streets.

One scholar has claimed that Reagan “destroyed” progressivism, but some of the blame should also be laid at the feet of the Democrats. To be sure, Reagan slowed the growth of government, but infrastructure building continued and the state university grew, as did many social problems. Much the same could be said of later Republican governors George Deukmejian and Pete Wilson, whose policies were only moderately conservative.

Enter Governor Moonbeam

The real problems for the progressive model, ironically, began to surface with the rise of Pat Brown’s son, Governor Edmund G. “Jerry” Brown Jr. He veered away from the traditional focus on nonpartisan governance and infrastructure spending - what long-time advisor Tom Quinn called “this build, build, build thing” - and instead focused on an environmentally friendly, “small is beautiful” approach.

However, the real problems did not ultimately reside with the brash, creative, and sometimes unpredictable young governor himself. Entrenched Democratic interest groups, particularly public employees, resisted property tax relief for California’s middle-class homeowners. Ultimately, this failure brought about the passage of Proposition 13, a strict limit on property taxes that would sharply curtail infrastructure spending and reduce the ability of local governments to address serious problems.

During Brown’s watch, and even despite his occasional opposition, the Democratic Party came increasingly under the sway of public employees, trial lawyers, and narrow interest activist groups. Their ability to raise money and impose their political will often outweighed that of even the most powerful business interests.

The full bill for this transformation would eventually be paid not by Brown, but by his former chief of staff, Gray Davis. Becoming governor in 1998, Davis became the prisoner of the special interest groups with whom his predecessors, Deukmejian and Wilson, had struggled.

By then, California’s shift to the Democrats had become inexorable and, with the fading of a GOP counterweight, influence within the party flowed to its more radical factions further to the political left. As a result, the state moved decisively away from the economic growth focus of Pat Brown. It seemed determined to wage war against its own economy. As pet social programs, entitlements, and state employee pensions soared, infrastructure spending - the hallmark of the Pat Brown regime and once 20 percent of the state budget - shrank to less than 3 percent.

The educational system, closely aligned with the Democrats in the legislature, accelerated its secular decline. Once full of highly skilled workers, California has become increasingly less so. For example, California ranks second in the percentage of its 65-year-olds holding an associate degree or higher and fifth in those with a bachelor’s degree. But when you look at the 25-to-34 age group, those rankings fade to 30th and 24th.

Instead of reversing these trends, the state legislature decided to spend its money on public employees and impose ever more regulatory burdens on business. Davis, a clever and experienced public servant, understood this but could not fight the zealots in his own party. When the state’s revenues shrank after the high-tech bust in 2000, he appeared to be their complete captive. Perhaps the most telling example of the misplaced priorities of the state’s majority party took place amid the state budget crisis when legislators, facing an imminent fiscal disaster, took time to debate legislation about providing more protections for transgender Californians.

Enter the Girlie Man

Davis’s apparent inability to gain control of the looming budget crisis opened the door to his 2003 recall and the election of a Republican, Arnold Schwarzenegger. The former bodybuilder and action hero promised to clean up “the mess” in California. He took aim at what he derided as the “girlie men” in the legislature, promising to get the state’s affairs in order. It was not to be. After a bruising defeat by liberal interest groups over a series of propositions, the onetime tough guy embraced what he called “bipartisanship.” The media, particularly on the national level, cooed, but in reality the governor simply ceded initiative to the very “girlie men” - the left-leaning state legislators - that he formerly promised to rein in.

Under Schwarzenegger, notes former GOP Assemblyman Keith Richman, the state budget actually grew even faster - 10 percent annually as opposed to 7 percent - than under his spendthrift Democratic predecessor, Gray Davis.

Dan Walters, the dean of California political reporters, argues that Schwarzenegger never bothered to learn the basics of state governance. As a result, state spending, particularly on state employees and their pensions, continued with no notion that another budget crisis was looming.

The Economic Crash

The Terminator and his advisors also never understood the economic rot undermining the state. The governor assumed little could be done to preserve manufacturing, warehousing, and other high-paying blue-collar jobs in California. Instead, he bought the idea that “creative” professionals in technology, finance, and entertainment could keep the state economically vibrant.

To be sure, the big players in technology and entertainment still often keep their main offices, and sometimes their research facilities, in California. However, they also tend to locate their middle management and production jobs to more affordable, enterprise-friendly states and countries. This is one reason, notes the Milken Institute’s Ross DeVol, that tech growth has been relatively weak even during the much-ballyhooed Internet 2.0 boom.

Worst of all, the governor’s economic team did not see the danger of the state’s growing reliance on the real estate bubble. According to my colleagues at the Praxis Strategy Group and others, as much as 50 percent of the state’s job growth in the 2000s relied on an inflated property market. It worked for a time, keeping many people - investors, homeowners, construction workers, financial types - gainfully employed and the state, for a while, solvent. A better-informed governor might have known it would all unravel. Indeed, in early 2007, even as it was clear that the bubble was deflating, Schwarzenegger continued to play vaingloriously to the klieg lights, promoting California as “the harmonious state, the prosperous state, the cutting-edge state … a model not just for 21st-century American society, but the world.”

Instead of addressing the fundamental fiscal and economic problems, the governor preened for the local and national media by making California the focal point for addressing global climate change. He also proposed a gigantic $14 billion healthcare program largely funded by a state that has beleaguered smaller businesses.

Fiscal reality scuttled the healthcare plan, but business is still trying to figure out how to cope with a carbon regime faced by few of their competitors. Meanwhile, California’s unemployment is now over 7.3 percent, fourth worst in the nation, behind only Michigan, Mississippi, and Rhode Island.

In wide regions of the state - from San Diego up through the Central Valley - the only boom is in the foreclosure business. Nor are the inner-city revivals doing much better. Shining condominium towers in Oakland, L.A., and San Diego have either cut their prices or, in many cases, gone rental, a fitting tribute to an age of diminished expectations.

…and Now the Return of Governor Moonbeam?

The state’s Republicans might be expected to exploit such a record of Democratic failure but seem incapable of doing so. Since the mid-1990s and Pete Wilson’s embrace of Proposition 187, the ballot measure designed to restrict social services provided to illegal immigrants, many grassroots elements of the party have tended to demonize the immigrants who make up almost 40 percent of the workforce.

The state is already close to a minority majority; Latinos alone make up half of the current kindergarten class. Republicans could blame the Democrats for the state’s persistent fiscal crisis. They could score points against the elitist aspects of ultra-green policies, the gluttony of public employees, the prospect of higher taxes, and the more radical parts of the left’s social agenda. However, that argument must be addressed toward, not against, the state’s increasingly minority middle class.

Instead, the most probable political scenario is more of the same, or worse. The two leading candidates for governor, San Francisco Mayor Gavin Newsom and 70-year-old Attorney General Jerry Brown, are considerably to the left of and even greener than Schwarzenegger.

Brown is clearly the stronger candidate, with a demonstrated appeal to minority voters that Newsom lacks. And Brown enjoys greater name recognition and better access to the big urban land interests, Hollywood, and Silicon Valley, the main money sources of the party other than the unions. In addition, Newsom is particularly ill suited to make even Jerry Brown seem out of touch. In a campaign, Newsom will have to justify his city’s policy of shielding illegal alien felons. He has spoken publicly about fining residents up to $1,000 for failing to sort their garbage correctly, something sure to repel most Californians.

Yet a second Brown administration poses enormous risks. Although somewhat pragmatic as mayor of Oakland, Brown has become an increasingly strident apostle of Al Gore’s global warming ideology. Brown calls global warming “the most important environmental issue facing the state and the world.” He has made it clear that he hopes to use legislative and executive power to curb suburban growth and induce people to cram themselves into California’s already congested, often crime-ridden cities.

Brown also seems determined to declare a holy war against the state’s already weakened agricultural and industrial base. As attorney general, he has pledged to block a proposed northern California plant that violates green values by using plastic bottles, a policy which, if he carries it out to its logical end, will decimate almost every blue-collar and industrial industry in the state.

So is there hope for the Golden State? Perhaps, although California likely will never regain the preeminence of a quarter century ago. Brown is many things, but he is also smart and flexible, as he showed by embracing Proposition 13 after its passage in 1978. He could still find a way to push the legitimate part of the green agenda, such as expansion of renewable fuels, without forcing every carbon- consuming business or single-family homebuilder out of the state.

Finally, there is this: no place in North America enjoys California’s combination of fertility, natural beauty, and diversity. Many Californians accept high housing prices, silly regulations, and noxious lawyers as part of the price of paradise. In a country of 50 states and more than 300 million people, there should still be a niche for an exceptional place, even if it no longer can pretend to lead the nation.

Joel Kotkin is executive editor of NewGeography.com and is a presidential fellow in urban futures at Chapman University. He is author of The City: A Global History and is finishing a book on the American future. This article originally appeared at American.com and is republished with permission.

Biologically Inspired Repair for Leaky Water Pipes

Friday, November 14th, 2008

The drinking-water pipe network in the United States extends more than 700,000 miles — four times the length of the national highway system. Much of the infrastructure is more than 100 years old.

It is estimated by the American Water Works Association that U.S. water utilities will need to invest $250 billion over the next 30 years to replace the aging pipes, many of which leak.

That typically involves digging up streets, which is costly. Enter a new platelet technology being tested by Yorkshire Water in the UK. It was developed by a company called Brinker, which was spun off from the University of Aberdeen. (It’s estimated that about a third of London’s drinking water is lost through leaking pipes.)

The technology is already used by the natural gas and oil industries to plug holes in leaky water pipes used to increase the pressure for extraction. Brinker says the technology’s parameters are: pressures from 2 to over 500 bars; and holes in pipes from 0.3mm to 50mm in diameter. The company says holes that big have been successfully sealed.

The platelet technology works the same way blood platelets seal a bleeding wound. They work under pressure, traveling inside a water pipe to seal the leak from within. 

The platelets are composed of materials that have passed stringent tests to ensure they don’t pose a risk to people who drink them. Testing is currently underway and the expectation is to have the technology in widespread commercial use in 2010.

What’s the spending outlook this year and next for water technologies like Brinker’s? A recent survey conducted by Changewave Research revealed the recession is weighing heavily on projected spending for water projects.

Desalination technology purchases are expected to be down by nearly 33 percent over the next 12 months, while long-term investment in infrastructure repair and replacement for pipes is holding steady or expected to attract more spending than any other water category over the next two years.

What’s more, wastewater treatment and water filtration are expected to get a bump in spending from the residual effect of water-infrastructure spending. Changewave Research’s  survey also found that the company best positioned to benefit in the water industry is General Electric.

With the expected steady investment in water-pipe replacement and repair infrastructure, the upside of Brinker’s platelet technology looks promising for a lot of leaky municipal water systems.

Another interesting water technology comes from Tongji University in Shanghai where researchers worked with Wei-xian Zhang, a professor of civil and environmental engineering at Lehigh University and recently completed a multiyear project studying how iron can be used to detoxify pollutants in industrial wastewater.
The iron, called zero valent iron because it is not oxidized, was obtained in the form of shavings or turnings from local metal-processing shops for less than 15 cents a pound.

Following a pilot test of the iron-detox approach two years ago, the Shanghai government approved a grant to construct a full-scale treatment reactor in the Taopu district.  It can process almost 16 million gallons a day of wastewater. Prior to the experiment, few people believed scrap iron could be used to clean water. –Lee Bruno