生物柴油
酯交换
酸值
十六烷值
生物柴油生产
碘值
皂化值
脂肪酸甲酯
制浆造纸工业
废物管理
皂化
甲醇
化学
废油
有机化学
生物燃料
催化作用
工程类
生物化学
作者
Sahar,Sana Sadaf,Javed Iqbal,Inam Ullah,Haq Nawaz Bhatti,Shazia Nouren,_ Habib-ur-Rehman,Jan Nisar,Munawar Iqbal
标识
DOI:10.1016/j.scs.2018.05.037
摘要
Biodiesel production from waste oils is an attractive option to produce biodiesel economically, but high free fatty acids (FFA) in waste oils are a serious bottleneck for the process of transesterification. Present investigation deals with the utilization of waste cooking oil (WCO) for the production of biodiesel. The acid value of WCO was 5.5 mg KOH/g which indicated high FFA content. The WCO was subjected to esterification using different acid catalysts (HCl, H2SO4 and H3PO4) and H2SO4 catalyzed reaction was found to be the most efficient since the FFA reduced up to 88.8% at 60 °C with 1:2.5 methanol to oil molar ratio. Transesterification was done in the presence of alkali catalyst (KOH) and Fatty acid methyl ester (FAME) yield was 94% in the presence of 1% catalyst at 50 °C. The biodiesel was characterized based on acid value, saponification value, iodine value, cetane number, specific gravity, viscosity, cloud point, pour point and calorific value. The Gas Chromatography (GC) analysis of synthesized biodiesel was also performed. Base on ASTM standards, alkali catalyzed transesterification was an efficient method to produce biodiesel form WCO. Results revealed that the waste cooking oils can be converted into biodiesel as an energy source along with environmental pollution reduction.
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