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Biodiesel industry needs a cheaper and economical viable raw material that can replace the currently used vegetable oil. Obtaining cheaper raw materials are one of the continuous targets of many biodiesel producing facilities since 70 to 95 % of the production costs are attributed to raw materials. One of the main options is to use waste material from animal and plant sources. In this study, coconut...
Transesterification of canola oil with methanol was investigated under a heterogeneous catalysts system. Various γ-Al2O3-, hydrotalcite-, SiO2-supported Na, Ca oxides prepared via an impregnation method were applied as solid catalyst. The influence of supports (γ-Al2O3, hydrotalcite, SiO2) structure on the activity and adsorption behavior of Na, Ca-based catalysts for transesterification was comparatively...
The activity behavior of Novozym 435 treated with organic solvents was investigated, and the influence of several crucial parameters, including Novozym 435 dosage, oil to methanol molar ratio, reaction time and type of monohydric alcohol, on biodiesel yield was also addressed using tert-butanol as co-solvent. The results showed that the functional group as well as log P of organic solvents was an...
The transesteriflcation of crude cottonseed oil with methyl acetate to biodiesel catalyzed by combined lipases (Lipozyme TL IM and Novozym 435) was investigated. The significant variables of transesterification (methanol concentration, combined lipases concentration and reaction temperature) were screened from six variables by PlackettBurman (PB) design and were further optimized via response surface...
Biodiesel, an alternative diesel fuel derived from vegetable oil, animal fat, or waste vegetable oil (WVO), is obtained in this work by reacting waste vegetable soybean oil using oil shale ash as a heterogeneous catalyst in addition to two alcohols ethylene glycol and ethanol. Results have indicated that high biodiesel yield is obtained when using ethylene glycol at high temperature, while the yield...
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