Bio-inspired membrane captures 90% of CO2 in power plant emissions

May 8, 2018 by  
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Researchers at Sandia National Laboratories have developed a new biologically inspired membrane that can capture carbon dioxide from power plant smoke. Sandia fellow and University of New Mexico regents’ professor Jeff Brinker said, “Our inexpensive method follows nature’s lead in our use of a water-based membrane only 18 nanometers thick that incorporates natural enzymes to capture 90 percent of carbon dioxide released. This is almost 70 percent better than current commercial methods, and it’s done at a fraction of the cost.” Brinker said that, in the past, it has been prohibitively expensive to remove CO2 from coal smoke with available polymer membranes. However, his team’s membrane boasts a “relatively low cost of $40 per ton.” The researchers call the membrane a ‘memzyme’ because it operates like a filter but is near-saturated with carbonic anhydrase, an enzyme “developed by living cells over millions of years to help rid themselves of carbon dioxide efficiently and rapidly.” University of New Mexico professor Ying-Bing Jiang came up with the concept of employing watery membranes, inspired by processes in the human body that separate out CO2. Brinker said the arrangement of the membrane inside the flue of a generating station would be similar to a catalytic converter in a car. Related: 18-year-old invents cheaper CO2 capture tech to fight climate change The work is patented and energy companies have shown interest. In addition, the membranes have worked efficiently for months in laboratory settings. Nature Communications published the work online earlier this month; researchers from other institutions in the United States contributed. + Sandia National Laboratories + Nature Communications Images via Randy Montoya and courtesy of Sandia National Laboratories

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Bio-inspired membrane captures 90% of CO2 in power plant emissions

Cows could one day be the largest land mammals left because of human activity

April 24, 2018 by  
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The world’s biggest land mammal is the African bush elephant , which can be up to 13 feet tall and 24 feet long. But this elephant — and giraffes, hippos and other large animals — could go extinct because of human activity, leaving the domestic cow as the biggest terrestrial mammal in a couple centuries. In a recent study, researchers scrutinized large mammal extinction as humans spread, and their study is, according to the University of New Mexico , “the first to quantitatively show … that size selective extinction is a hallmark of human activities and not the norm in mammal evolution.” Thousands of years ago, the spread of archaic humans from Africa coincided with extinction of megafauna, or large mammals, like sabre-toothed tigers and mammoths, The Guardian reported. “One of the most surprising finds was that 125,000 years ago, the average body size of mammals on Africa was already 50 percent smaller than on other continents,” said Felisa Smith, professor at the University of New Mexico and lead author of the study. “We suspect this means that archaic humans and other hominins had already influenced mammal diversity and body size in the late-Pleistocene.” Related: The world’s last male northern white rhino has died in Kenya The researchers compiled extensive data around mammal body size, geographic location, climate and extinction status in the past 125,000 years and modeled diversity and body size distributions for the next 200 years. The study also found that in 65 million years, climate changes didn’t lead to more extinctions. “We suspect that in the past, shifts in climate led to adaptation and movement of animals, not extinction,” said co-author Jonathan Payne of Stanford University . “Of course, today ongoing climate change may result in extinction since most megafauna are limited in how far they can move.” Smith said we’re really just starting to appreciate megafauna’s crucial roles in ecosystems. “For example, as they walk, their massive size compacts the soil, which can lead to changes in gas exchange or water tables. … We are not entirely sure what the potential loss of these ‘ecosystem engineers’ could lead to,” he said. “I hope we never find out.” The journal Science published the research this month. Scientists from the University of California, San Diego and University of Nebraska-Lincoln also contributed. + University of New Mexico + Science Via The Guardian Images via Michael Pujals on Unsplash and the University of New Mexico

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Cows could one day be the largest land mammals left because of human activity

Melting Ice Cools Team ASUNM’s Desert-Adapted SHADE House at the Solar Decathlon

October 8, 2013 by  
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Read the rest of Melting Ice Cools Team ASUNM’s Desert-Adapted SHADE House at the Solar Decathlon Permalink | Add to del.icio.us | digg Post tags: “solar energy” , 2013 solar decathlon , ASU , ASUNM , California , clean tech , Department of Energy , desert homes , desert living , DoE architecture competition , Doe Solar Decathlon , drought-resistant flora , eco design , green design , green tech , home cooled with melting ice , intercollegiate architecture competition , irvine , PHX Renews , prefab solar homes , rainwater capture , renewable energy , SHADE House , Solar Decathlon , solar decathlon 2013 , solar innovation , Solar Power , solar-powered prefab home , sustainable design , university of new mexico        

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Melting Ice Cools Team ASUNM’s Desert-Adapted SHADE House at the Solar Decathlon

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