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Palm oil production a source of heat-trapping methane
Mar 13th
are a climate concern, CU-Boulder study says
In recent years, palm oil production has come under fire from environmentalists concerned about the deforestation of land in the tropics to make way for new palm plantations. Now there is a new reason to be concerned about palm oil’s environmental impact, according to researchers at the University of Colorado Boulder.
An analysis published Feb. 26 in the journal Nature Climate Change shows that the wastewater produced during the processing of palm oil is a significant source of heat-trapping methane in the atmosphere. But the researchers also present a possible solution: capturing the methane and using it as a renewable energy source.
The methane bubbling up from a single palm oil wastewater lagoon during a year is roughly equivalent to the emissions from 22,000 passenger vehicles in the United States, the analysis found. This year, global methane emissions from palm oil wastewater are expected to equal 30 percent of all fossil fuel emissions from Indonesia, where widespread deforestation for palm oil production has endangered orangutans.
“This is a largely overlooked dimension of palm oil’s environmental problems,” said lead author Philip Taylor, a postdoctoral researcher at CU-Boulder’s Institute of Arctic and Alpine Research (INSTAAR). “The industry has become a poster child for agriculture’s downsides, but capturing wastewater methane leaks for energy would be a step in the right direction.”
The global demand for palm oil has spiked in recent years as processed food manufacturers have sought an alternative to trans fats.
For now, the carbon footprint of cutting down forests to make way for palm plantations dwarfs the greenhouse gases coming from the wastewater lagoons. But while deforestation is expected to slow as the focus shifts to more intensive agriculture on existing plantations, the emissions from wastewater lagoons will continue unabated as long as palm oil is produced, the researchers said.
However, the climate impact of the leaking methane could be mitigated by capturing the gas and using it to fuel power plants. Biogas technology has been used successfully for decades and it can produce renewable electricity at a cost that’s competitive with traditional fuels, the authors said.
The amount of methane biogas that went uncollected from palm oil wastewater lagoons last year alone could have met a quarter of Malaysia’s electricity needs. Tapping into that unused fuel supply could yield both financial and environmental benefits, the authors said.
Capturing methane at wastewater lagoons could be encouraged by making it a requirement before palm oil products can be certified as sustainable, the authors said. Current sustainability certifications do not address wastewater emissions.
Taylor, whose research typically focuses on carbon cycling in old-growth tropical forests, was inspired to do the analysis by undergraduate researcher Hana Fancher, who also is a co-author of the journal article. Fancher and Taylor were doing research in Costa Rica, where palm oil production is spreading, when Fancher became curious about how the oil was being processed.
“She has a wastewater background,” Taylor said. “She ended up doing an honors thesis on palm oil agriculture and wastewater emissions. This paper is an extension of that thinking.”
Other co-authors from CU-Boulder include Associate Professor Diana Nemergut, doctoral student Samantha Weintraub and Professor Alan Townsend, in whose lab the work was based. Other co-authors include Cory Cleveland of the University of Montana, William Wieder of the National Center for Atmospheric Research and Teresa Bilinski of St. Edwards University.
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CU develops solar toilet for third world use
Mar 13th
by CU-Boulder ready for India unveiling
A revolutionary University of Colorado Boulder toilet fueled by the sun that is being developed to help some of the 2.5 billion people around the world lacking safe and sustainable sanitation will be unveiled in India this month.
The self-contained, waterless toilet, designed and built using a $777,000 grant from the Bill & Melinda Gates Foundation, has the capability of heating human waste to a high enough temperature to sterilize human waste and create biochar, a highly porous charcoal, said project principal investigator Karl Linden, professor of environmental engineering. The biochar has a one-two punch in that it can be used to both increase crop yields and sequester carbon dioxide, a greenhouse gas.
The project is part of the Gates Foundation’s “Reinvent the Toilet Challenge,” an effort to develop a next-generation toilet that can be used to disinfect liquid and solid waste while generating useful end products, both in developing and developed nations, said Linden. Since the 2012 grant, Linden and his CU-Boulder team have received an additional $1 million from the Gates Foundation for the project, which includes a team of more than a dozen faculty, research professionals and students, many working full time on the effort.
According to the Gates Foundation, the awards recognize researchers who are developing ways to manage human waste that will help improve the health and lives of people around the world. Unsafe methods to capture and treat human waste result in serious health problems and death – food and water tainted with pathogens from fecal matter results in the deaths of roughly 700,000 children each year.
Linden’s team is one of 16 around the world funded by the Gates “Reinvent the Toilet Challenge” since 2011. All have shipped their inventions to Delhi, where they will be on display March 20-22 for scientists, engineers and dignitaries. Other institutional winners of the grants range from Caltech to Delft University of Technology in the Netherlands and the National University of Singapore.
The CU-Boulder invention consists of eight parabolic mirrors that focus concentrated sunlight to a spot no larger than a postage stamp on a quartz-glass rod connected to eight bundles of fiber-optic cables, each consisting of thousands of intertwined, fused fibers, said Linden. The energy generated by the sun and transferred to the fiber-optic cable system — similar in some ways to a data transmission line — can heat up the reaction chamber to over 600 degrees Fahrenheit to treat the waste material, disinfect pathogens in both feces and urine, and produce char.
“Biochar is a valuable material,” said Linden. “It has good water holding capacity and it can be used in agricultural areas to hold in nutrients and bring more stability to the soils.” A soil mixture containing 10 percent biochar can hold up to 50 percent more water and increase the availability of plant nutrients, he said. Additionally, the biochar can be burned as charcoal and provides energy comparable to that of commercial charcoal.
Linden is working closely with project co-investigators Professor R. Scott Summers of environmental engineering and Professor Alan Weimer chemical and biological engineering and a team of postdoctoral fellows, professionals, graduate students, undergraduates and a high school student.
“We are doing something that has never been done before,” said Linden. “While the idea of concentrating solar energy is not new, transmitting it flexibly to a customizable location via fiber-optic cables is the really unique aspect of this project.” The interdisciplinary project requires chemical engineers for heat transfer and solar energy work, environmental engineers for waste treatment and stabilization, mechanical engineers to build actuators and moving parts and electrical engineers to design control systems, Linden said.
Tests have shown that each of the eight fiber-optic cables can produce between 80 and 90 watts of energy, meaning the whole system can deliver up to 700 watts of energy into the reaction chamber, said Linden. In late December, tests at CU-Boulder showed the solar energy directed into the reaction chamber could easily boil water and effectively carbonize solid waste.
While the current toilet has been created to serve four to six people a day, a larger facility that could serve several households simultaneously is under design with the target of meeting a cost level of five cents a day per user set by the Gates Foundation. “We are continuously looking for ways to improve efficiency and lower costs,” he said.
“The great thing about the Gates Foundation is that they provide all of the teams with the resources they need,” Linden said. “The foundation is not looking for one toilet and one solution from one team. They are nurturing unique ideas and looking at what the individual teams bring overall to the knowledge base.”
Linden, who called the 16 teams a “family of researchers,” said the foundation has funded trips for CU-Boulder team members to collaborate with the other institutions in places like Switzerland, South Africa and North Carolina. “Instead of sink or swim funding, they want every team to succeed. In some ways we are like a small startup company, and it’s unlike any other project I have worked on during my career,” he said.
CU-Boulder team member Elizabeth Travis from Parker, Colo., who is working toward a master’s degree in the engineering college’s Mortenson Center in Engineering for Developing Communities, said her interest in water and hygiene made the Reinvent the Toilet project a good fit. “It is a really cool research project and a great team,” she said. “Everyone is very creative, patient and supportive, and there is a lot of innovation. It is exciting to learn from all of the team members.”
“We have a lot of excitement and energy on our team, and the Gates Foundation values that,” Linden said. “It is one thing to do research, another to screw on nuts and bolts and make something that can make a difference. To me, that’s the fun part, and the project is a nice fit for CU-Boulder because we have a high interest in developing countries and expertise in all of the renewable energy technologies as well as sanitation.”
The CU-Boulder team is now applying for phase two of the Gates Foundation Reinvent the Toilet grant to develop a field-worthy system to deploy in a developing country based on their current design, and assess other technologies that may enhance the toilet system, including the use of high-temperature fluids that can collect, retain and deliver heat.
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Call It What It Is: Energy of Mass Extinction
Mar 11th
by JACQUELINE MARCUS FOR BUZZFLASH AT TRUTHOUT
It’s time for the public to start calling 19th century barbaric fossil fuels what it is: Energy of Mass Extinction. Dirty energy companies, including nuclear power plants, have been owned by a few rich white families from the start, which is why production of energy has remained in the Dark Ages even though clean renewable energy could have lit up the world easily, cheaply and without pollution twenty years ago. Given the latest advances in green energy technology, there’s absolutely no excuse for not legislating rapid shifts to clean energy by 2020.
Instead, world leaders, primarily the US government, not only serve as “barriers” to the advancement of green energy, they’re the fossil fuel industry’s sleaziest salesmen on earth: Big Oil pays for their seats on the Hill for the sole purpose of selling Energy of Mass Extinction to world markets. Oil executives are given an open door invitation to the White House any time and day of the week.
By contrast, lawyers that represent the public’s welfare and our environment are not welcomed, or they are put on a long waiting list. In short, the oil oligarchs operate from the White House where the polluters meet and draw up their plans. Judges are also owned by the oil firms. For example, read Buzzflash editor at Truthout Mark Karlin’s recent commentary about a federal judge that blocked U.S. courts from being used to collect a $9 billion Ecuadorean judgment against Chevron for turning a beautiful rainforest into a putrid toxic waste dump Thanks to a thoroughly corrupt US government, another victory for Chevron’s oil tyrants who don’t have to clean up the toxic sludge they leave behind after they’ve contaminated everything in sight for Energy of Mass Extinction.
In order to understand Obama’s plans for Energy of Mass Extinction, it’s worth reading two articles that appeared in the Rolling Stone: How the U.S. Exports Global Warming by Tim Dickinson. While Obama talks about shifting to a clean, green future, behind closed doors, he and his rich oil friends are selling tar-sands oil, black gunk refined to crude known as petroleum coke, which is denser and dirtier than burning coal—to world markets, mostly to China and Asian markets because it’s cheap fuel.
Too bad China won’t tell Obama to take his filthy tar-sands and shove it you know where, and that they’ll meet their energy demands with their advanced solar and wind technologies. But unfortunately, they’re buying it. And as long as there’s a demand, we will be doomed by these horrific decisions made by world leaders. Incidentally, “Hillary Clinton is even more supportive of the dirty-energy trade than the Obama White House.”
The second piece is Matt Taibbi’s The Vampire Squid Strikes Again. Thanks to deregulation going back to the Glass-Steagall Act under President Clinton, accelerated by Republican, Phil Gramm, banks have gone beyond financing dirty fossil fuel industries: they’re buying everything associated with the production of Energy of Mass Extinction for big profits.
When you read these two pieces together, you get a clear understanding of how oil firms, Wall St and the US government are buying and selling Energy of Mass Extinction in a blinding wheel of addiction to money while the earth is going up in flames. These people wouldn’t know a Redwood from a Palm tree. They’re completely divorced from nature. They are exactly what T.S. Eliot meant by the Hollow Men.
Meanwhile, in Washington D.C. hundreds of students are being arrested in front of the White House to protest against the Keystone Tar Sands Pipeline. Although these kids stepped over the line deliberately to get arrested for the sake of drawing attention to tar-sands Energy of Mass Extinction, to my mind, they were arrested to protect the oil industry.
While these kids are going to jail for trying to save a beautiful planet that is doomed from man-made pollution, the oil criminals continue to poison our drinking water, oceans, rivers, lands, and our air at mass levels of destruction. Are they getting arrested? No, they’re being wined and dined at the White House. As for the oil-owned media, as Buzzflash editor, Mark Karlin, pointed out, a huge, oil-funded PR campaign has been launched to push Obama’s approval of the northern Keystone leg from Alberta, Canada to the southern Keystone pipeline for delivery to the Gulf where it will be sold to China and Asian markets.
For example, it was disconcerting to see that HuffingtonPost Green published Warren Buffet’s cheerleading article for the Keystone pipeline. It’s one thing to post it in the business section, but to promote Buffet’s big push for the worst carbon emitting pollution on earth in the environmental section seemed terribly hypocritical at HuffPost Green. There’s one significant point that Buffet failed to mention in his article: that he plans to profit from his investment in the Keystone tar-sands pipeline. That’s how PR works: convince the public that oil (tar-sands) is good for them, when in fact, it only benefits a few billionaires like Buffet at the expense of life as we know it.
In my last Buzzflash-Truthout commentary, Who’s to Blame for Recurring Chemical & Oil Disasters, I made a reference to Elizabeth Kolbert’s new book, The Sixth Extinction. Kolbert is a staff writer at The New Yorker and also the author of Field Notes from a Catastrophe. In The Sixth Extinction, Kolbert explains how our use of fossil fuels and the effects of climate change are creating a mass extinction of the planet. “We are effectively undoing the beauty and the variety and the richness of the world which has taken tens of millions of years to reach,” said Kolbert on a NPR Fresh Air interview with Terry Gross.
That’s why it’s important for the public to call dirty energy what it is: Energy of Mass Extinction; it’s a barbaric fuel that is sucking the life and light from our Planet Earth.
Dirty Energy is the real Weapon of Mass Destruction. These ruthless monsters are not going to change their ways as long as they can profit by the billions from annihilating the earth. Therefore, we must all make an effort to stop using and buying these deadly products to the best of our abilities. That’s what’s happening in Hawaii. Residents are opting out of the grid for solar and by doing so, making it impossible for the antiquated utility company (HECO) to stay alive. Read Hawaii’s top renewable energy advocate Henry Curtis’ piece U.S. Utilities Face Impending Doom with the Rise of Cheap Solar.
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Jacqueline Marcus is a contributing guest writer for Buzzflash at Truthout.org; she’s the editor ofForPoetry.com and EnvironmentalPress.com and author of Close to the Shore by Michigan State University Press. Her E-book, Man Cannot Live on Oil, Alone: Time to end our dependency on oil before it ends us, is available at Kindle Books.