کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
244261 | 501945 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Biocatalytic production of biodiesel from cottonseed oil: Standardization of process parameters and comparison of fuel characteristics Biocatalytic production of biodiesel from cottonseed oil: Standardization of process parameters and comparison of fuel characteristics](/preview/png/244261.png)
The enzymatic production of biodiesel by transesterification of cottonseed oil was studied using low cost crude pancreatic lipase as catalyst in a batch system. The effects of the critical process parameters including water percentage, methanol:oil ratio, enzyme concentration, buffer pH and reaction temperature were determined. Maximum conversion of 75–80% was achieved after 4 h at 37 °C, pH 7.0 and with 1:15 M ratio of oil to methanol, 0.5% (wt of oil) enzyme and water concentration of 5% (wt of oil). Various organic solvents were tested among which a partially polar solvent (t-butanol) was found to be suitable for the reaction. The major fuel characteristics like specific gravity, kinematic viscosity, flash point and calorific value of the 20:80 blends (B20) of the fatty acid methyl esters with petroleum diesel conformed very closely to those of American Society for Testing Materials (ASTM) standards.
Journal: Applied Energy - Volume 88, Issue 4, April 2011, Pages 1251–1256