by Ibon » Tue 07 Mar 2006, 01:46:23
$this->bbcode_second_pass_quote('JEMASCOLA', 'H')ow are these deritives of petroleum?
Fertilizers and pesticides are made from a base of petroleum or natural gas. Most of the nitrogen fertilizer farmers use today is made from natural gas. Pesticides are in a base of solvents made from petroleum.Oil and gas are organic carbon based molecules that can be synthesized and processed into many chemical compounds.
Maybe this information may be of help to see where petroleum is involved in the whole process of growing food:
http://www.321energy.com/editorials/chu ... 40205.html
http://www.noble.org/Ag/Soils/NitrogenPrices/Index.htm
Nonfuel Products
Nonfuel use of petroleum is small compared with fuel use, but petroleum products account for about 89 percent of the Nation's total energy consumption for nonfuel uses. There are many nonfuel uses for petroleum, including various specialized products for use in the textile, metallurgical, electrical, and other industries. A partial list of nonfuel uses for petroleum includes:
• Solvents such as those used in paints, lacquers, and printing inks
• Lubricating oils and greases for automobile engines and other machinery
• Petroleum (or paraffin) wax used in candy making, packaging, candles, matches, and polishes
• Petrolatum (petroleum jelly) sometimes blended with paraffin wax in medical products and toiletries
• Asphalt used to pave roads and airfields, to surface canals and reservoirs, and to make roofing materials and floor coverings
• Petroleum coke used as a raw material for many carbon and graphite products, including furnace electrodes and liners, and the anodes used in the production of aluminum.
• Petroleum Feedstocks used as chemical feedstock derived from petroleum principally for the manufacture of chemicals, synthetic rubber, and a variety of plastics.
Petrochemical Feedstocks
Petroleum feedstocks have been used in the commercial production of petrochemicals since the 1920's. Petrochemical feedstocks are converted to basic chemical building blocks and intermediates used to produce plastics, synthetic rubber, synthetic fibers, drugs, and detergents. Naphtha, one of the basic feedstocks, is a liquid obtained from the refining of crude oil.
Petrochemical feedstocks also include products recovered from natural gas, and refinery gases (ethane, propane, and butane). Still other feedstocks include ethylene, propylene, normal- and iso-butylenes, butadiene, and aromatics such as benzene, toluene, and xylene. These feedstocks are produced by processing products such as ethane (separated from natural gas), distillates, naphthas, and heavier oils.
Industry data show that the chemical industry uses nearly 1.5 million barrels per day of natural gas liquids and liquefied refinery gases as petrochemical feedstocks and plant fuel. 10 Demand for textiles, explosives, elastomers, plastics, drugs, and synthetic rubber during World War II increased the petrochemical use of refinery gases. Gas byproducts from the production of gasoline are an important source of many feedstocks.