机构地区: 西南交通大学环境科学与工程学院
出 处: 《环境科学与技术》 2006年第11期21-22,33,共3页
摘 要: 研究了用Ti/RuO2-IrO2三元电极作阳极电解处理人工合成苯酚废水时Cl-初始浓度对处理效果的影响。结果表明,在一定的电解时间范围内苯酚在阳极上的电化学氧化符合一级动力学关系;废水中Cl-的初始浓度越大,苯酚完全被电化学氧化所需的时间也越短,其表观速度常数越大,电解中间体的生成和降解速率也越大。采用HPLC、GC/MS等方法鉴定出苯酚在Cl-体系下降解的中间产物主要有4-氯苯酚,1-氯苯酚,2,4-二氯苯酚,2,6二氯苯酚,2,4,6-三氯苯酚、各种短链脂肪酸及氯代醇等;最终产物是CO2、CHCl2和CHCl3。依此推导出了苯酚在Cl-体系下电化学降解的途径。 Effects of the original chloride concentration on electrochemical oxidation of phenol in wastewater were studied.The results show that the more Cl-contained in wastewater the shorter is the time needed for completely oxidation of phenol,i.e.,the electrolytic product of Cl-plays an important role in strengthening phenol degradation.Intermediate chemicals of the electrochemical reaction were detected using HPLC and GC/MS.
领 域: [环境科学与工程]