茶籽油制备生物柴油工艺研究

以茶树[Camellia sinensis (L.) O.Kuntze]茶籽油为原料,研究了茶籽油甲酯化制备生物柴油的工艺条件.在单因素试验的基础上,选取反应温度、催化剂用量(占精炼油质量百分比)、反应时间和醇油摩尔比为影响因子,以酯交换率为响应值,应用Box-Behnken中心组合试验设计建立数学模型,进行响应面分析.结果表明,茶籽油制备生物柴油的最佳工艺条件为:反应温度58℃、催化剂用量1.05％、反应时间66 min、醇油摩尔比9.7∶1.在此条件下,酯交换率达到98.73％.对生物柴油进行红外光谱和GC-MS分析,产品质量达到国家生物柴油标准.

Optimization on Processing Parameters for Biodiesel from Tea Seed Oil

Methyl esterification preparation of biodiesel from tea seed oil was investigated.According to single factor investigation,a mathematical model with transesterification ratio as a response to reaction temperature,catalyst dosage,reaction time,mole ratio of methanol to oil was established using Box-Behnken central composite experimental design.This was followed by response surface analysis.It was found that the optimal process conditions for methyl esterification of tea seed oil were as follows:reaction temperature 58℃,catalyst dosage(mass percent to oil)1.05%,reaction time 66 min,mole ratio of methanol to oil 9.7∶1,and that the resultant transesterification ratio was 98.79%.Fourier transforms infrared spectroscopy and GC/MS were used to analyze biodiesel,and the quality indexes of biodiesel in the experiment reached the national biodiesel standards of Chinese.