The wide uptake of biodiesel will not make any difference to global warming and could result in greater emissions of greenhouse gases than from conventional diesel, suggests a new study in Chemistry & Industry.
The study was based on a comparison of the two fuels over their entire lifecycle – from production to combustion. All up, the two fuels were similar, both emitting around the same quantity of carbon dioxide equivalent greenhouse gases. But while conventional diesel emits 85 percent of its greenhouse gases when burnt in the engine, two-thirds of the emissions produced by rapeseed derived biodiesel occur during the farming of the crop.
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