کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
205419 461109 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of biodiesel from high FFA alperujo oil catalysed by immobilised lipase
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of biodiesel from high FFA alperujo oil catalysed by immobilised lipase
چکیده انگلیسی


• Enzymatic biodiesel synthesis from alperujo oil with and without neutralization.
• Comparison of r-ROL activity on different polymethacrylate supports.
• Positive effect of free fatty acids on initial rate and stability.

Synthesis of biodiesel was carried out through enzymatic biocatalysis by the transesterification of natural waste olive oil (alperujo oil) using a recombinant 1,3-positional selective Rhizopus oryzae lipase (rROL). The most relevant property of this uncommon substrate is the high content of free fatty acids (FFAs), making it impossible to produce biodiesel through basic catalysis. The synthesis reactions were carried out in a solvent-free media using a covalent immobilisation on a glutaraldehyde-treated polymethacrylate amino-epoxide carrier. Methanol was added by stepwise addition to avoid lipase inactivation. FFAs effects on the kinetics, yields and stability of biocatalysts were studied. It was concluded that the high free fatty acids content allows an increasing on the initial reaction rate and it gives more stability to the immobilised enzyme, demonstrating the efficiency of this new substrate for the biodiesel production.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 161, 1 December 2015, Pages 12–17
نویسندگان
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