21 research outputs found
Biorefineries for biofuel upgrading: A critical review
This study reviews the biofuel valorization facilities as well as the future importance of biorefineries. Biomass can be converted into useful biofuels and bio-chemicals via biomass upgrading and biorefinery technologies. A biorefinery is a facility that integrates biomass conversion processes to produce fuels, power, and chemicals from biomass. Biomass upgrading processes include fractionation, liquefaction, pyrolysis, hydrolysis, fermentation, and gasification. Upgraded bio-oil from biomass pyrolysis can be used in vehicle engines as fuel. The benefits of an integrated biorefinery are numerous because of the diversification in feedstocks and products. There are currently several different levels of integration in biorefineries which adds to their sustainability, both economically and environmentally. Economic and production advantages increase with the level of integration in the biorefinery.Biomass Biofuel Fractionation Upgrading Biorefining
Biomass pyrolysis for liquid fuels and chemicals: A review
797-804Biomass pyrolysis produces fuels and chemicals. Pyrolysis (conventional, fast and flash) can produce solid (charcoal),
liquid (tar and other organics), and gaseous products (H₂, CO₂, CO) between 625 and 775 K. Charcoal yield decreases as
temperature increases. Production of liquid products is maximum between 625-725 K
Importance of algae oil as a source of biodiesel
Algae are the fastest-growing plants in the world. Industrial reactors for algal culture are open ponds, photobioreactors and closed systems. Algae are very important as a biomass source. Algae will some day be competitive as a source for biofuel. Different species of algae may be better suited for different types of fuel. Algae can be grown almost anywhere, even on sewage or salt water, and does not require fertile land or food crops, and processing requires less energy than the algae provides. Algae can be a replacement for oil based fuels, one that is more effective and has no disadvantages. Algae are among the fastest-growing plants in the world, and about 50% of their weight is oil. This lipid oil can be used to make biodiesel for cars, trucks, and airplanes. Microalgae have much faster growth-rates than terrestrial crops. the per unit area yield of oil from algae is estimated to be from 20,000 to 80,0001 per acre, per year; this is 7-31 times greater than the next best crop, palm oil. The lipid and fatty acid contents of microalgae vary in accordance with culture conditions. Most current research on oil extraction is focused on microalgae to produce biodiesel from algal oil. Algal-oil processes into biodiesel as easily as oil derived from land-based crops. (C) 2010 Elsevier Ltd. All rights reserved