|
|
||
|
|
|
User loginNavigation |
Journal ArticleLand Clearing and the Biofuel Carbon DebtCategory: Biomass - Documnet Type: Journal ArticleIncreasing energy use, climate change, and carbon dioxide (CO2) emissions from fossil fuels make switching to low-carbon fuels a high priority. Biofuels are a potential low-carbon energy source, but whether biofuels offer carbon savings depends on how they are produced.... More» Author: Joseph Fargione, Jason Hill, David Tilman, Stephen Polasky, Peter Hawthorne - submitted on Thu, 09/17/2009 - 19:23. Greater Transportation Energy and GHG Offsets from Bioelectricity Than EthanolCategory: - Documnet Type: Journal ArticleThe quantity of land available to grow biofuel crops without affecting food prices or greenhouse gas (GHG) emissions from land conversion is limited. Therefore, bioenergy should maximize land-use efficiency when addressing transportation and climatechange goals.... More» Author: J. E. Campbell, D. B. Lobell, C. B. Field - submitted on Thu, 09/17/2009 - 19:18. Driving on BiomassCategory: Biomass - Documnet Type: Journal ArticleThe development of the internal combustion engine (ICE) vehicle dramatically influenced American society during the 20th century by providing affordable, reliable transportation. However, the ICE vehicle is an inherently inefficient converter of chemical energy to mechanical power; less than 20% of the energy in gasoline is transformed into mechanical work, and the remainder is lost as heat.... More» Author: John Ohlrogge, Doug Allen, Bill Berguson, Dean DellaPenna, Yair Shachar-Hill, Sten Stymne - submitted on Thu, 09/17/2009 - 19:15. Carbon-Negative Biofuels from Low-Input High-Diversity Grassland BiomassCategory: Biomass - Documnet Type: Journal ArticleBiofuels derived from low-input high-diversity (LIHD) mixtures of native grassland perennials can provide more usable energy, greater greenhouse gas reductions, and less agrichemical pollution per hectare than can corn grain ethanol or soybean biodiesel. High-diversity grasslands had increasingly higher bioenergy yields that were 238% greater than monoculture yields after a decade.... More» Author: David Tilman, Jason Hill, Clarence Lehman - submitted on Thu, 09/17/2009 - 19:13. Cellulosic Biofuels—Got Gasoline?Category: - Documnet Type: Journal ArticleMost people think of ethanol as the only liquid biofuel, and that the major advances in biofuels will revolve around enzymatic conversion of cellulosic or woody biomass (including nonfood stems and stalks of corn stover or switch-grass, and wood chips) into simple fermentable sugars (1).... More» Author: John R. Regalbuto - submitted on Thu, 09/17/2009 - 19:09. Energy Balance and Emissions Associated with Biochar Sequestration and Pyrolysis Bioenergy ProductionCategory: Biochar - Documnet Type: Journal ArticleThe implications for greenhouse gas emissions of optimizing a slow pyrolysis-based bioenergy system for biochar and energy production rather than solely for energy production were assessed. Scenarios for feedstock production were examined using a life-cycle approach. We considered both purpose grown bioenergy crops (BEC) and the use of crop wastes (CW) as feedstocks.... More» Author: John Gaunt, and Johannes Lehmann - submitted on Wed, 11/12/2008 - 20:06. Black Carbon Increases Cation Exchange Capacity in SoilsCategory: Biochar - Documnet Type: Journal ArticleBlack Carbon (BC) may significantly affect nutrient retention and play a key role in a wide range of biogeochemical processes in soils, especially for nutrient cycling.... More» Author: B. Liang, J. Lehmann, D. Solomon, J. Kinyangi, J. Grossman, B. O’Neill, J. O. Skjemstad, J. Thies, F. J. Luizano, J. Petersen, and E. G. Neves - submitted on Fri, 11/07/2008 - 19:03. Long term effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered soilCategory: Biochar - Documnet Type: Journal ArticleApplication of organic fertilizers and charcoal increase nutrient stocks in the rooting zone of crops, reduce nutrient leaching and thus improve crop production on acid and highly weathered tropical soils.... More» Author: Christoph Steiner, Wenceslau G. Teixeira, Johannes Lehmann, Thomas Nehls, Jeferson Luis, Vasconcelos de Macêdo - submitted on Fri, 11/07/2008 - 18:46. Natural oxidation of black carbon in soils: Changes in molecular form and surface charge along a climosequenceCategory: Biochar - Documnet Type: Journal ArticleThe aim of this work was to investigate changes in molecular form and surface charge of black carbon (BC) due to longterm natural oxidation and to examine how climatic and soil factors affect BC oxidation.... More» Author: Chih-Hsin Cheng, Johannes Lehmann, Mark H. Engelhard - submitted on Fri, 11/07/2008 - 00:12. Stability of black carbon in soils across a climatic gradientCategory: Biochar - Documnet Type: Journal ArticleThe recalcitrant properties of black carbon (BC) grant it to be a significant pool of... More» Author: Chih-Hsin Cheng, Johannes Lehmann, Janice E. Thies, and Sarah D. Burton - submitted on Thu, 11/06/2008 - 23:54.  |
|
Flux Farm |