Wan Jin-quan, Hu Meng-die, Ma Yong-wen, Huang Ming-zhi
College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China.
Huan Jing Ke Xue. 2013 May;34(5):1808-14.
A test was conducted to examine the degradation effect and reductive dechlorination pathway of 2, 4, 6-trichlorophenol (2,4,6-TCP) in the presence of different electron donors, such as glucose, sodium lactate, sodium pyruvate and sodium acetate. The results showed that, compared with the effect of glucose, sodium lactate, sodium pyruvate and sodium acetate enhanced the dechlorination of 2, 4, 6-TCP effectively, among which sodium lactate could serve as a kind of hydrogen release compound, and the electrons required for reductive dechlorination were released in a sustained way. Substrate metabolism dehydrogenase activity was improved by the external electron donor; after reaction for 240 h, the activity of dehydrogenase was increased in the four electron donor systems, by 21.49%, 25.78%, 136.85% and 139.3%, respectively. The main reductive dechlorination products of 2,4,6-TCP included 2,4-dichlorophenol (2,4-DCP), 4-chlorophenol (4-CP) and phenol; when sodium acetate was used as the electron donor, 4-CP was the main degradation product, and the transformation ratio from 2,4,6-TCP to 4-CP was more than 22%.
进行了一项试验，以研究在葡萄糖、乳酸钠、丙酮酸钠和乙酸钠等不同电子供体存在下2,4,6-三氯苯酚（2,4,6-TCP）的降解效果和还原脱氯途径。结果表明，与葡萄糖的效果相比，乳酸钠、丙酮酸钠和乙酸钠能有效增强2,4,6-TCP的脱氯作用，其中乳酸钠可作为一种氢释放化合物，还原脱氯所需的电子以持续的方式释放。外部电子供体提高了底物代谢脱氢酶的活性；反应240小时后，四个电子供体系统中的脱氢酶活性分别提高了21.49%、25.78%、136.85%和139.3%。2,4,6-TCP的主要还原脱氯产物包括2,4-二氯苯酚（2,4-DCP）、4-氯苯酚（4-CP）和苯酚；当使用乙酸钠作为电子供体时，4-CP是主要降解产物，从2,4,6-TCP到4-CP的转化率超过22%。
