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Journal ArticleBiological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additionsCategory: Biochar - Documnet Type: Journal ArticleThis study examines the potential, magnitude, and causes of enhanced biological Nitrogen fixation (BNF) by common beans (Phaseolus vulgaris L.) through bio-char additions (charcoal, biomass-derived black carbon).... More» Author: Marco A. Rondon, Johannes Lehmann, Juan Ramírez, Maria Hurtado - submitted on Thu, 11/06/2008 - 23:45. Biochar for mitigating climate change: carbon sequestration in the blackCategory: Biochar - Documnet Type: Journal ArticleBioenergy is experiencing a renaissance as a strategy for substituting fossil energy and reducing greenhouse gas emissions but is still facing significant challenges in delivering sufficient amounts of energy in an environmentally friendly and cost-effective way.... More» Author: Johannes Lehmann - submitted on Thu, 11/06/2008 - 23:33. Some Recent Advances in Hydrolysis of Biomass in Hot-Compressed Water and Its Comparisons with Other Hydrolysis MethodsCategory: Biomass - Documnet Type: Journal ArticleBiomass hydrolysis extracts, particularly sugars and other useful derivatives, are important products for further conversion to produce biofuels. The past 2 decades have witnessed significant research and development activities using hot-compressed water for the hydrolysis and conversion of cellulose, hemicellulose, and lignocellulosic biomass materials.... More» Author: Yun Yu, Xia Lou, and Hongwei Wu - submitted on Mon, 11/03/2008 - 18:56. Solar Energy Conversion by Dye-Sensitized Photovoltaic CellsCategory: Solar Energy - Documnet Type: Journal ArticleThe development of solar cells that are based on the sensitization of mesoscopic oxide films by dyes or quantum dots might hold the key to low cost solar electric power. These systems have already reached conversion efficiencies exceeding 11%.... More» Author: Gratzel, Michael - submitted on Tue, 07/22/2008 - 19:39. Sewage Sludge as a Biomass Resource for the Production of EnergyCategory: Biomass - Documnet Type: Journal ArticleTreatment of municipal wastewater results worldwide in the production of large amounts of sewage sludge. The major part of the dry matter content of this sludge consists of nontoxic organic compounds, in general a combination of primary sludge and secondary (microbiological) sludge. The sludge also contains a substantial amount of inorganic material and a small amount of toxic components. ... More» Author: Rulkins, Wim - submitted on Mon, 07/14/2008 - 22:29. Pyrolysis of Wood/Biomass for Bio-oil: A Critical ReviewCategory: Biomass - Documnet Type: Journal ArticleFast pyrolysis utilizes biomass to produce a product that is used both as an energy source and a feedstock for chemical production. Considerable efforts have been made to convert wood biomass to liquid fuels and chemicals since the oil crisis in mid-1970s.... More» Author: Dinesh Mohan; Charles U. Pittman; Philip H. Steele - submitted on Fri, 07/11/2008 - 21:40. How Green Are Biofuels?Category: - Documnet Type: Journal ArticleBiofuels derived from renewable resources are thought to help reduce greenhouse gas emissions. However, a Swiss study by Zah et al. (German) looks at the full life-cycle costs of 26 different biofuels produced from a wide variety of crops. The study assesses the t... More» Author: Scharlemann, Jorn P.W. and Williams F. Laurance - submitted on Thu, 07/10/2008 - 19:34. Light-Splitting Trick Squeezes More Electricity Out of Sun's RaysCategory: Solar Energy - Documnet Type: Journal ArticleIn the quest to create highly efficient solar cells, researchers with the Department of Defense have developed a light-splitting technique that could boost cell efficiency to 42%. The technique uses a dichroic mirror to direct wavelength-filtered photons towards separate, and otherwise un-combinable semiconductors of indium gallium phosphide and indium gallium arsenide. The optical mirror is m... More» Author: Kintisch, Eli - submitted on Thu, 07/10/2008 - 17:51. Can the Upstarts Top SiliconCategory: Solar Energy - Documnet Type: Journal ArticleSilicon solar panels (currently accounting for 90% of the current market) are already approaching their potential peak for converting sunlight into electricity. The most efficient silicon cells on the market can convert 24% of the energy in sunlight to electricity, however most commercial cells achieve 15% to 20% efficiencies. ... More» Author: Service, Robert F. - submitted on Thu, 07/10/2008 - 17:14. Toward Cost-Effective Solar Energy UseCategory: Solar Energy - Documnet Type: Journal ArticleMore energy from sunlight strikes the earth in 1 hour than all of the energy consumed by humans in an entire year. In fact, the earth's solar resource dwarfs all other renewable and fossil fuel based energy resources combined. However, solar electricity will not be a material contributor to primary energy generation until cost effective methods for capturing, converting, storing and distributi... More» Author: Nathan, Lewis S. - submitted on Mon, 07/07/2008 - 21:52.  |
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