Potential hazards associated with combustion of bio-derived versus petroleum-derived diesel fuel.

摘要: Fuels from renewable resources have gained worldwide interest due to limited fossil oil sources and the possible reduction of atmospheric greenhouse gas. One these fuels is so called biodiesel produced vegetable by transesterification into fatty acid methyl esters (FAME). To get a first insight changes health hazards diesel engine emissions (DEE) use scientific studies were reviewed which compared combustion FAME with common fuel (DF) for legally regulated non-regulated as well toxic effects. A total number 62 publications on chemical analyses DEE 18 toxicological in vitro identified meeting criteria. In addition, very small human animal experiments available. most studies, reduces carbon monoxide, hydrocarbons, particulate matter. Nitrogen oxides are regularly increased. Among aldehydes increased, while polycyclic aromatic hydrocarbons lowered. Most biological assays show stronger cytotoxicity exhaust reveal irritant Both findings possibly caused higher content nitrogen exhaust. The lower PAH reflected weaker mutagenicity DF However, recent low well, probably elimination sulfur present qualities new technology engines. Combustion (VO) engines causes strongly enhanced despite nearly unchanged emissions. newly developed "hydrotreated oil" (HVO) seems be promising. HVO has physical advantages FAME. Preliminary results decreased mutagenicity.