News tagged with biofuel
Related topics: ethanol , greenhouse gas emissions , fossil fuels , biomass , carbon dioxide
Biofuel is defined as solid, liquid or gaseous fuel obtained from relatively recently lifeless or living biological material and is different from fossil fuels, which are derived from long dead biological material. Also, various plants and plant-derived materials are used for biofuel manufacturing.
Globally, biofuels are most commonly used to power vehicles, heat homes, and for cooking. Biofuel industries are expanding in Europe, Asia and the Americas. Recent technology developed at Los Alamos National Lab even allows for the conversion of pollution into renewable bio fuel. Agrofuels are biofuels which are produced from specific crops, rather than from waste processes such as landfill off-gassing or recycled vegetable oil.
There are two common strategies of producing liquid and gaseous agrofuels. One is to grow crops high in sugar (sugar cane, sugar beet, and sweet sorghum) or starch (corn/maize), and then use yeast fermentation to produce ethyl alcohol (ethanol). The second is to grow plants that contain high amounts of vegetable oil, such as oil palm, soybean, algae, jatropha, or pongamia pinnata. When these oils are heated, their viscosity is reduced, and they can be burned directly in a diesel engine, or they can be chemically processed to produce fuels such as biodiesel. Wood and its byproducts can also be converted into biofuels such as woodgas, methanol or ethanol fuel. It is also possible to make cellulosic ethanol from non-edible plant parts, but this can be difficult to accomplish economically..
Solid biomass is also used. Many materials such as wood and grasses can be dried and pelletised and burnt; and this can be used for power production. Although this produces some clinker the processing uses less energy and this can give higher overall efficiency.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Compounds that affect respiratory health have been found in biodiesel exhausts. This might lead to restrictions on the use of this form of biofuel as an alternative to fossil fuel, according to researchers from the Queensland ...
Health Oct 17, 2012 | not rated yet | 0
Twelve years after a breakthrough discovery in his University of California, Berkeley, laboratory, professor of chemical engineering Jay Keasling is seeing his dream come true.
Medications Apr 11, 2013 | not rated yet | 0