Global petroleum deposits will be depleted within the next 100 years and research on veggie-powered cars is on in earnest.
AVE you ever though, while eating your sag, how marvelous it would be if there could be "vegie-powered cars"? It might sound bizarre, but there are a few people who think this could be possible some day.
The attractive thought of "green" energy has inspired a number of alternatives to fossil fuels in recent years. The more exciting among them is the research into biomass and natural materials to power our fuel-hungry cars and machinery.
A Louisiana State University researcher has found an alternative method of producing petroleum that eliminates environmental impacts from mining and using fossil petroleum reserves.
Dr. James Catallo, environmental chemist and associate professor of environmental toxicology at the LSU School of Veterinary Medicine, says his approach may well provide truly "green", or environmentally friendly, sources for petroleum hydrocarbons. His approach is to use biological material, or biomass, to produce hydrocarbon mixtures similar to crude petroleum. It involves a brief treatment biomass in hot water under pressure to yield complex hydrocarbon mixtures, essential for running an engine.
This approach reduces problems of oil exploration and production by using contemporary biological material that can be farmed or acquired from various food and agricultural wastes.
Traditional means of acquiring petroleum, including exploring, drilling and transporting crude oil, have a negative impact on the environment. Further, combustion of natural petroleum products, such as gasoline, releases new carbon dioxide into the atmosphere, which is a major factor in the global greenhouse effect.
"The approach documented in this patent builds a concept of renewable petroleum sources that have a reduced environment impact," says Catallo. Experts say global petroleum deposits will be depleted within 100 years with the current usage rates. Although new sources of energy will be developed, there always will be a major need for petroleum hydrocarbons, including high-energy fuels and petrochemicals such as plastics, coatings and solvents.
"My approach is an environmentally friendly alternative to petroleum production," Catallo explains. "No toxic chemicals are used in the process, no ecosystems are compromised by exploration and drilling activities, and no net increase of atmospheric green-house gases is involved in the process."
"It frequently is hard to specify how new knowledge will be used and how initial plans, when modified over years or decades, will turn out," Catallo says. "But this work has documented an exciting area of organic chemistry that has a wide range of basic and applied implications for environmental scientists, paleobiologists and chemists alike."
Simultaneously, the concept of bio-diesel is also developing around the world.. it is an ester-based from oxygenated fuel made from vegetable oil or animal fat. The concept, an old one, dates back to 1895, when Rudolf Diesel developed the first diesel engine to run on vegetable oil.
Today's diesel engines require a clean-burning, stable fuel that perform well under a variety of operating conditions. Biodiesel is an alternative fuel that can be used directly in any existing, unmodified diesel engine. Because it has similar properties to petroleum diesel fuel, biodiesel can be blended in any ratio with petroleum diesel fuel. This has already been attempted in many vehicles around the world.
Biodiesel has low emissions and is therefore ideal for use in marine areas, national parks and forests, and heavily polluted cities. Biodiesel has many advantages as a transport fuel. For example, biodiesel can be produced from grown common oilseeds plants .
The Statesman
SCITECH
May 22, 2001
|