润滑油
生物柴油
响应面法
甲醇
催化作用
原材料
生物柴油生产
中心组合设计
酯交换
乙醇
试剂
化学
材料科学
核化学
废物管理
制浆造纸工业
有机化学
色谱法
工程类
作者
Nam Nghiep Tran,Edward J. McMurchie,Yung Ngothai
标识
DOI:10.1002/slct.201800065
摘要
Abstract Grease trap waste (GTW) often has a very high content of free fatty acids (FFA) which requires a pre‐treatment step before it can be converted to biodiesel via the transesterification reaction. In this study, the esterification reaction was performed to reduce the level of FFA in the GTW, utilizing ethanol as the reagent in the presence of the catalyst H 2 SO 4 . Response Surface Methodology (RSM) based on Central Composite Design (CCD) was applied to determine the optimal conditions for the esterification reaction through four process variables, these being: the molar ratio of ethanol to fats, oils, and grease (FOG), reaction time, reaction temperature, and catalyst loading. A set of 30 experiments were conducted in triplicate to study the interactive effects of the above variables on the reduction of the level of FFAs. An FFA% of 0.84% was obtained at the optimum conditions, which were 6:1 ethanol to FOG molar ratio, 3 hr reaction time, 75 0 C reaction temperature, and 3 wt% H 2 SO 4 loading per FOG weight.
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