REPEATED USE OF METHANOL AND SULFURIC ACID TO PRETREAT JATROPHA OIL FOR BIODIESEL PRODUCTION
Large-scale plantation of jatropha will provide low-cost and reliable feedstock for biodiesel production, but jatropha oil has the tendency to degrade so that it often contains excessive free fatty acid (FFA). In this study, an efficient method was developed by repeated use of the mixture of methanol and sulfuric acid for the pretreatment of jatropha oil with an acid value of 10.4 mg KOH/g. A quadratic polynomial model was established by investigating the effect of water content on the conversion of FFA, while the molar ratio of methanol to FFA was 270:1 and the weight ratio of sulfuric acid to jatropha oil was 1.6％. This model was proved to be valid when the mixture of methanol and sulfuric acid had been used for twenty times. Total sulfuric acid and methanol used for these twenty experiments was 0.21％ and 21％ respectively, based on the weight of pretreated jatropha oil. Average reaction time of them was 26min; acid values of the pretreated jatropha oil were about 0.6 mg KOH/g, water contents of it were no more than 0.07％. Biodiesel with an ester content of 98.6％ was produced through the following alkaline catalyzed biodiesel production process.
Zhongming Wang Chuangzhi Wu Zhenhong Yuan Jinsuk Lee Soonchul Park
GuangZhou Institute of Energy Conversion, CAS, Wushan, Tianhe, Guangzhou, 510640, China Korea Instit GuangZhou Institute of Energy Conversion, CAS, Wushan, Tianhe, Guangzhou, 510640, China Korea Institute of Energy Research, 71-2, Jang-Dong, Yusong-gu, Daejeon, 305-343, Korea
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）