State of the art and prospective of lipase-catalyzed transesterification reaction for biodiesel production
State of the art and prospective of lipase-catalyzed transesterification reaction for biodiesel production
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DOI：
10.1016/j.enconman.2016.09.049
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发表时间：
2017-06-01
影响因子：
10.4
通讯作者：
Chen, Wei-Hsin
中科院分区：
文献类型：
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作者：
Amini, Zeynab;Ilham, Zul;Chen, Wei-Hsin
世界对作为能源的燃料的需求已经产生了产生替代品如生物燃料的需要。生物柴油是一种可再生燃料，特别用于柴油发动机。目前，生物柴油的生产主要是通过化学催化剂催化的酯交换反应，该反应在较短的反应时间内生成高级脂肪酸烷基酯。虽然通过下游加工对酶促酯交换进行了广泛的研究，但由于商业脂肪酶主要限于成本以及反应时间长，酶促酯交换尚未用于放大。虽然许多脂肪酶被研究并证明具有高催化能力，但酶促反应仍需要更多的研究。为了填补这一空白，通过适当的反应建模和模拟以及适当的设计和使用大规模生产的反应器来找到反应的最佳条件，如醇和油的选择，水含量，反应时间和温度，是需要准确解决的关键问题。此外，脂肪酶浓度，通过全细胞技术和基因工程替代脂肪酶资源，最新的固定化材料，包括纳米颗粒，酶的重复使用能力是需要仔细研究的重要标准。本文综述了生物柴油的原料、催化剂、固定化材料、生物反应器、脂肪酶资源、强化技术以及酶催化酯交换反应的过程模型。(C)2016由Elsevier Ltd.出版
The world demand for fuel as energy sources have arisen the need for generating alternatives such as biofuel. Biodiesel is a renewable fuel used particularly in diesel engines. Currently, biodiesel is mainly produced through transesterification reactions catalyzed by chemical catalysts, which produces higher fatty acid alkyl esters in shorter reaction time. Although extensive investigations on enzymatic transesterification by downstream processing were carried out, enzymatic transesterification has yet to be used in scale-up since commercial lipases are chiefly limited to the cost as well as long reaction time. While numerous lipases were studied and proven to have the high catalytic capacity, still enzymatic reaction requires more investigation. To fill this gap, finding optimal conditions for the reaction such as alcohol and oil choice, water content, reaction time and temperature through proper reaction modelling and simulations as well as the appropriate design and use of reactors for large scale production are crucial issues that need to be accurately addressed. Furthermore, lipase concentration, alternative lipase resources through whole cell technology and genetic engineering, recent immobilizing materials including nanoparticles, and the capacity of enzyme to be reused are important criteria to be neatly investigated. The present work reviews the current biodiesel feedstock, catalysis, general and novel immobilizing materials, bioreactors for enzymatic transesterification, potential lipase resources, intensification technics, and process modelling for enzymatic transesterification. (C) 2016 Published by Elsevier Ltd.