Climate Change and Ecosystem

Biofuels and Bioenergy

Advanced biofuels are fuels that can be processed from numerous types of biomass. First generation biofuels are processed from the sugars and vegetable oils formed in arable crops, which can be smoothly extracted applying conventional industrial biotechnology. In comparison, microbial biofuels are made from modern biomass or woody crops, agricultural residues or waste, which makes it tougher to extract the requisite fuel. Advanced biofuel technologies have been devised because first generation biofuels manufacture has major limitations. First generation biofuel processes are convenient but restrained in most cases: there is a limit above which they cannot yield enough biofuel without forbidding food supplies and biodiversity. Many first generation biofuels rely on subsidies and are not cost competitive with prevailing fossil fuels such as oil, and some of them yield only limited greenhouse gas emissions savings. When considering emissions from production and transport, life-cycle assessment from first generation biofuels usually approach those of traditional fossil fuels. Advanced biofuels can aid resolving these complications and can impart a greater proportion of global fuel supply affordably, sustainably and with larger environmental interests.