This study investigated the purification of glycerol obtained from the biodiesel production process using various solvents including toluene, petroleum ether, and n-butanol in a micro-scale extractor. Glycerol was produced using a mixture of soybean oil and methanol in a molar ratio of 6:1 in the presence of potassium hydroxide catalyst at 60 °C during 4 h; it was then neutralized by sulfuric acid 98%. The produced crude glycerol was extracted in different solvents using a microreactor with a T-shaped mixer with a square cross-section dimension of 0.9 mm. Operating temperatures were 303.15 K and 318.15 K and the solvent to feed ratio were 1:4, 1:3, 1:2, 1:1, 2:1, 3:1, and 4:1. Based on the results, petroleum ether was more effective in removing methanol from glycerol and purifying it, as compared with the other two solvents. The highest level of glycerol purity which was obtained through using toluene, petroleum ether, and n-butanol solvents was 93.6, 98.4, and 83.4%, respectively. These values were obtained at 318.15 K.

本实验研究从使用各种溶剂，包括甲苯，石油醚生物柴油生产过程中得到的甘油的纯化和Ñ-丁醇在微型萃取器中。使用大豆油和甲醇的摩尔比为6：1的混合物，在氢氧化钾催化剂存在下，在60°C的条件下，在4小时内生产甘油；然后用98％的硫酸中和。使用具有T形混合器的微型反应器在具有正方形横截面尺寸为0.9mm的微型反应器中提取所产生的粗制甘油。工作温度为303.15 K和318.15 K，溶剂与进料的比例为1：4、1：3、1：2、1：1、2：1、3：1和4：1。根据结果​​，与其他两种溶剂相比，石油醚在从甘油中去除甲醇和纯化甲醇方面更有效。通过使用甲苯，石油醚和正己烷获得的甘油纯度最高-丁醇溶剂分别为93.6％，98.4％和83.4％。这些值是在318.15 K下获得的。