Biodiesel<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
There is nothing to stop biodiesel making an immediate impact in reducing the world's dependence on fossil fuels that contribute to global warming. Using biodiesel requires no major changes to either existing diesel engines or to the current distribution infrastructure of storage tanks and petrol stations that delivers diesel fuel to consumers.
Petroleum diesel produces high levels of carbon dioxide (CO2), a greenhouse gas that contributes significantly to global warming. But burning biodiesel produces only a marginal increase in CO2 emissions, because the crops from which it is produced capture CO2 as they grow.
Diesel also produces other harmful pollutants: poisonous carbon monoxide that causes smog; particulates that contribute to respiratory infections; sulphur that causes acid rain; unburned aromatic hydrocarbons that also create smog and may be a contributing cause of cancer; and volatile organic compounds (VOCs), chemicals which have potential adverse health effects.
Used either in its pure form or blended with mineral diesel, biodiesel produces significantly lower levels of all these harmful emissions. <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Sulphur emissions are virtually eliminated. The level of emissions reduction depends on the percentage of biodiesel used. Pure biodiesel (B100) produces the greatest reductions in harmful emissions. However, lower levels of biodiesel blend, including 5% (B5) amd 20% (B20), also significantly reduce emissions. Biodiesel is less toxic than mineral diesel and also biodegradable.
Biodiesel can be used in vehicles with only minimum modifications to engines. Manufacturer warranties increasingly cover the use of biodiesel blends with mineral diesel of up to 20% (B20). Biodiesel’s higher flash point and ignition quality, known as cetane value, enables diesel engines to burn more efficiently and cleanly.
Jatropha curcas oil has been used effectively for running diesel engine and its proposed to raise a biodiesel plant facility and cultivate in and around Jaipur districts. Recently World bank has sanctioned a project in Viratnagar which envisages Jatropha production on the fences of village fields in area of around 400 km and establishment of biodiesel plant at Amity campus will facilitate the extraction process