منابع مشابه
Switchgrass and Alfalfa as Cellulosic Biofuels: Possibilities and Limits
Perennial crops which produce high cellulose yields have the potential as non-fossil fuel energy sources for the future, due to a number of environmental benefits, and potentially higher energy yields compared with grains. However, considerable technical barriers for cellulosic conversion to fuel remain. From an agronomic perspective, alfalfa and switchgrass have important positive features as ...
متن کاملFrom first generation biofuels to advanced solar biofuels
Roadmaps towards sustainable bioeconomy, including the production of biofuels, in many EU countries mostly rely on biomass use. However, although biomass is renewable, the efficiency of biomass production is too low to be able to fully replace the fossil fuels. The use of land for fuel production also introduces ethical problems in increasing the food price. Harvesting solar energy by the photo...
متن کاملWelcome to Biotechnology for Biofuels
Address: 1Department of Applied Microbiology, LTH/Lund University, PO Box 124, S-221 00, Lund, Sweden, 2Chemical and Biosciences Center, National Renewable Energy Laboratory, Cole Boulevard, Golden, CO 80401-3393, USA, 3Energy Biosciences Institute, University of California Berkeley, 130 Calvin Laboratory, MC 5230, Berkeley CA 94720-5230, USA and 4Center for Environmental Research and Technolog...
متن کاملBiofuels
The global energy market provides humans with about 370 exajoules of energy per year, which is equivalent to about 170 million barrels of oil per day (Box 1) or about 11.73 terrawatts (TW) per hour [1]. Approximately 95% of this energy comes from fossil fuels. Additionally, the International Energy Agency suggests that direct combustion of plant biomass provides about one-third of the energy ne...
متن کاملOn the future prospects and limits of biofuels in Brazil, the US and EU
In the early 2000s high expectations existed regarding the potential contribution of biofuels to the reduction of greenhouse gas emissions and substitution of fossil fuels in transport. In recent years sobering judgments prevailed. The major barriers for a further expansion of biofuels are their high costs (compared to fossil fuels), moderate ecological performances, limited feedstocks for biof...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2013
ISSN: 2100-014X
DOI: 10.1051/epjconf/20135401014