酯交换
响应面法
生物柴油
润滑油
生物柴油生产
中心组合设计
产量(工程)
催化作用
乙醇
化学
材料科学
甲醇
有机化学
制浆造纸工业
核化学
废物管理
化学工程
色谱法
复合材料
工程类
作者
Nam Nghiep Tran,Edward J. McMurchie,Yung Ngothai
标识
DOI:10.1002/slct.201800064
摘要
Abstract This study aimed to investigate the conversion of the pre‐treated oil, which was originally extracted from grease trap waste (GTW), to biodiesel via a transesterification reaction. The pre‐treated oil, which consists of approximately 80% free fatty acid ethyl esters (FAEEs) and 18% of glycerides, was obtained through the esterification of GTW reported in a previous study. Response Surface Methodology (RSM) based on Central Composite Design (CCD) was applied to determine the optimum conditions for the transesterification reaction through four process variables, these being: the molar ratio of ethanol to oil, reaction time, reaction temperature, and base catalyst loading. A set of 30 experiments were conducted in duplicate to study the interactive effects of the above parameters on the ester yield. A maximum ester yield of 96.7% was obtained at the optimum conditions, which were: 4:1 ethanol to oil molar ratio, 1 hr reaction time, 65 °C reaction temperature, and 1 wt% KOH loading per oil weight. In order to reduce the excess ethanol used, a modification was applied to the experimental design of the transesterification reaction, resulting in a 30% reduction in ethanol used, while the same ester yield could be obtained.
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