Synthesis of fatty acid methyl ester and it potential for dissolution of polycyclic aromatic hydrocarbons from soil | 脂肪酸甲基酯制备及其对土壤中多环芳烃的溶解作用
2009
Wu Jinbao, Shengyang Agricultural University, Shenyang(China), Land and Environment College | Yi Yanli, Shengyang Agricultural University, Shenyang(China), Land and Environment College | Gong Zongqiang, Shengyang Agricultural University, Shenyang(China), Land and Environment College
中国人. 应用固定化酶催化大豆油合成脂肪酸甲基酯．与市售生物柴油中脂肪酸甲基酯含量进行了对比，建立了脂肪酸甲基酯中多环芳烃的分析方法，研究了脂肪酸甲基酯溶解多环芳烃的性能。结果表明：脂肪酸甲基酯的最佳合成条件为20％的周定化酶，醇油摩尔比3：1，分3次加入，摇床转速160r・min. 1，反应体系温度38％，反应时间48h；在上述条件下，甲酯转化率大于95％。制得的脂肪酸甲基酯总量与市售生物柴油中脂肪酸甲基酯含量相当。脂肪酸甲基酯对典型多环芳烃的溶解阌值大于250mg・L. 1，可直接溶解土壤中的多环芳烃，上述结果为多环芳烃污染土壤修复提供了一种新的可供选择的方法。[著者文摘]
显示更多 [+] 显示较少 [-]英语. Synthesis of fatty acid methyl esters （FAMEs）, which were compared to the contents of FAMEs of a market biodiesel, using soybean oil catalyzed with immobilized enzyme was performed. An analytical method for determination of polycyclic aromatic hydrocarbons （PAHs） in FAMEs was established. The performance of FAMEs in solubilizing PAHs was evaluated. Results show that the best conditions for FAME synthesis were： 20% of immobilized enzyme, tool ratio of methanol to oil was 3：1, added for three times, shaking speed was 160 r・min. 1, system reaction temperature was 38℃, and reaction time was 48 h. Under above conditions, transform rate was higher than 95% for methyl ester. The total content of the synthesized FAME was comparable to that of the market biodiesel. The synthesized FAMEs can dissolve 〉250 mg・L. 1 representative PAHs, and can solubilize soil PAHs directly. The results above provide a new alternative method for PAH contaminated soil remediation.
显示更多 [+] 显示较少 [-]