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A detailed experimental study was conducted to investigate the production and fuel properties of bio-oil-in-diesel microemulsion (BDM) and its emission characteristics. Bio-oil was produced from liquefaction of methanol, castor oil and sewage sludge. Hydrophilic surfactant (Span 80) and hydrophobic surfactant (Tween 80) of different mixing ratio and different co-surfactant (alcohols) were tested to...
In the present study, waste rapeseed oil with high free fatty acids (FFA) was used as feedstock for producing biodiesel. In the pretreatment step, FFA was reduced by distillation refining method. Then, biodiesel was produced by alkaline-catalyzed transesterification process, which was designed according to the 2 4 full-factorial central composite design. The response surface methodology (RSM)...
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