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Production of Biodiesel Using Immobilised Rhizopus oryzae Lipase in a Microchannel Reactor

Production of Biodiesel Using Immobilised Rhizopus oryzae Lipase in a Microchannel Reactor Process intensification methods are used to increase the reaction conversion in a short duration. The application of microchannel reactors is one of the methods widely used for enzymatic catalytic reactions. In this study, biodiesel is produced from waste cottonseed oil (WCO) in a microchannel reactor. The feedstock is reacted with ethanol in the presence of immobilised Rhizopus oryzae lipase packed in the reactor. The microchannel reactor comprises a polytetrafluoroethylene tube with an inner diameter of 0.68 mm packed with immobilised Rhizopus oryzae lipase. The reactants were fed into the reactor through a T-mixer. The effects of different parameters such as ethanol-to-oil molar ratio, temperature and residence time were optimised. Further, the conversion obtained in the microchannel reactor was compared with a conventional batch process to identify the effectiveness. An optimum conversion of 92.5% was achieved at a 4:1 ethanol-to-oil molar ratio, 45 °C, and a residence time of 120 min was obtained for the microchannel process, whereas 90.7% conversion was achieved at the highest reaction time of 18 h for a batch process under the same condition. The increase in conversion and reduction in reaction time was due to the use of microchannel reactors increasing the mass transfer rate. In addition to this, the physiochemical properties of the product biodiesel were determined using standard methods and the results were compared with the ASTM D6751 standard. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India):Series E Springer Journals

Production of Biodiesel Using Immobilised Rhizopus oryzae Lipase in a Microchannel Reactor

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Publisher
Springer Journals
Copyright
Copyright © The Institution of Engineers (India) 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2250-2483
eISSN
2250-2491
DOI
10.1007/s40034-022-00257-1
Publisher site
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Abstract

Process intensification methods are used to increase the reaction conversion in a short duration. The application of microchannel reactors is one of the methods widely used for enzymatic catalytic reactions. In this study, biodiesel is produced from waste cottonseed oil (WCO) in a microchannel reactor. The feedstock is reacted with ethanol in the presence of immobilised Rhizopus oryzae lipase packed in the reactor. The microchannel reactor comprises a polytetrafluoroethylene tube with an inner diameter of 0.68 mm packed with immobilised Rhizopus oryzae lipase. The reactants were fed into the reactor through a T-mixer. The effects of different parameters such as ethanol-to-oil molar ratio, temperature and residence time were optimised. Further, the conversion obtained in the microchannel reactor was compared with a conventional batch process to identify the effectiveness. An optimum conversion of 92.5% was achieved at a 4:1 ethanol-to-oil molar ratio, 45 °C, and a residence time of 120 min was obtained for the microchannel process, whereas 90.7% conversion was achieved at the highest reaction time of 18 h for a batch process under the same condition. The increase in conversion and reduction in reaction time was due to the use of microchannel reactors increasing the mass transfer rate. In addition to this, the physiochemical properties of the product biodiesel were determined using standard methods and the results were compared with the ASTM D6751 standard.

Journal

Journal of The Institution of Engineers (India):Series E – Springer Journals

Published: Dec 1, 2022

Keywords: Microchannel reactor; Biodiesel; Immobilised Rhizopus oryzae lipase; Waste cottonseed oil and Process intensification

References