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Otimization of Crambe abyssinica enzymatic transesterification using response surface methodology

机译：使用响应表面方法的Crambe Abysinica酶酯酯优化

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摘要

Crambe abyssinica is a non-edible crop able to adapt to adverse climatic conditions, arising as an alternative feedstock for biodiesel production. With this objective, an eco-friendly route for biodiesel production from crambe oil by enzymatic transesterification was evaluated in order to maximize fatty acid methyl esters content. Response Surface Methodology and central composite design (two factors, three levels, one central point, two replicas) was used to obtain predictive models considering catalyst concentration and methanol:oil molar ratio as independent variables. Since the reaction was monitored overtime, a predictive model considering three independent variables (three factors, three levels) was also obtained. Enzymatic transesterification is a good alternative process to obtain high FAME yield, with 84 +/- 5 wt % being obtained after 2 h using a methanol:oil molar ratio 6:1 and 8 wt% of enzyme, a value which predictably can increase to almost 99 wt% after 24 h. The results showed that the methanol:oil molar ratio and the enzyme & rsquo;s concentration considerably influence the FAME content during enzymatic catalyzed reaction. The polynomial regression models obtained can help to balance the concentration of enzyme and alcohol to improve FAME production and to predict the resulting yield.(c) 2021 Published by Elsevier Ltd.
机译：Crambe Abyssinica是一种能够适应不利气候条件的不可食用的作物，作为生物柴油生产的替代原料。为此目的，评价来自酶酯酯化的克拉姆布布油的生态纤维柴油生产途径，以最大化脂肪酸甲酯含量。响应面方法和中央复合设计（两个因素，三级，一个中心点，两个复制品）用于获得考虑催化剂浓度和甲醇的预测模型：油摩尔比为独立变量。由于对反应进行了加班，因此还获得了考虑三个独立变量（三个因素，三级）的预测模型。酶促酯交换是一种良好的替代方法，以获得高名称产量，使用甲醇后2小时获得84 +/- 5wt％：油摩尔比6：1和8wt％的酶，可预测可以增加的值24小时后近99重量％。结果表明，甲醇：油摩尔比和酶和rsquo; S浓度显着影响酶催化反应过程中的名称含量。获得的多项式回归模型可以有助于平衡酶和酒精的浓度，以改善成本生产并预测所得的产量。（c）由elestvier有限公司发布2021年

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  • 来源
    《Renewable energy》 |2021年第8期|444-452|共9页
  • 作者

    Costa E.; Almeida M. F.; Alvim-Ferraz C.; Dias J. M.;

  • 作者单位

    Univ Porto Fac Engn LEPABE Dept Engn Met & Mat R Dr Roberto Frias P-4200465 Porto Portugal;

    Univ Porto Fac Engn LEPABE Dept Engn Met & Mat R Dr Roberto Frias P-4200465 Porto Portugal;

    Univ Porto Fac Engn LEPABE Dept Engn Quim R Dr Roberto Frias P-4200465 Porto Portugal;

    Univ Porto Fac Engn LEPABE Dept Engn Met & Mat R Dr Roberto Frias P-4200465 Porto Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Crambe abyssinica; Non-edible oil; Heterogenous catalyst; Response surface methodology;

    机译：Crambe Abyssinica;不可食用的油;异源催化剂;反应表面方法;

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