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首页> 外文会议>Air and Waste Management Association annual conference and exhibition >Kinetic Study on the Acid Catalytic Esterification of High Level Free Fatty Acids in the Waste Cooking Oil
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Kinetic Study on the Acid Catalytic Esterification of High Level Free Fatty Acids in the Waste Cooking Oil

机译：废食用油中高含量游离脂肪酸的酸催化酯化反应动力学研究

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Waste cooking oil (WCO) has become one of the major feedstocks for biodiesel production. One problem with WCO is its high free fatty acid (FFA) concentration that may ruin the alkaline catalytic transesterification reaction, the most widely used method for making biodiesel. In this study, WCO with FFA level of 5±0.5 wt% was treated by acid catalytic esterificiation with sulfuric acid (H2SO4). The FFAs were converted into their monoesters and influence of temperature, methanol-to-FFA molar ratio, and catalyst concentration on the conversion rate and reaction kinetics were investigated. The result indicated that the optimal condition could be 60±5°C, 40:1-50:1 methanol-to-FFA molar ratio, and 10-12.5 wt% H_2SO_4 concentration. The range of activation energy {Ea) for the reaction was 20.7-45.9 kJ/mol.
机译：垃圾烹饪油（WCO）已成为生物柴油生产的主要原料之一。 WCO的一个问题是其高脂肪酸（FFA）浓度，可能破坏碱性催化酯交换反应，是制造生物柴油的最广泛使用的方法。在本研究中，通过酸催化酯化与硫酸（H2SO4）处理具有5±0.5wt％的FFA水平的WCO。将FFA转化为其单酯，并研究了温度，甲醇至FFA摩尔比的影响，并研究了转化率和反应动力学的催化剂浓度。结果表明，最佳条件可为60±5℃，40：1-50：1甲醇 - 至FFA摩尔比，10-12.5wt％H_2SO_4浓度。反应的活化能量{EA）的范围为20.7-45.9kJ / mol。

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