Degradation of p-toluenesulfonic acid by ozonation: performance optimization and mechanism
This paper explored ozonation for the treatment of pharmaceutical wastewater and p-toluenesulfonic acid (PTSA) was selected as the model pharmaceutical intermediate.The results showed that the ozonation process is efficient for the degradation of PTSA both in concentration and COD removal.The mono factor results showed that 60L/h was a suitable ozone flow rate.There were sharp difference between acid condition and alkaline condition,under acidic conditions,the direct oxidation with molecular ozone is of primary importance,and under alkaline conditions the hydroxyl oxidation starts to dominate,and pH=12 was a suitable value.Further,intermediates of PTSA degradation were analyzed and the reaction mechanism was discussed.
ozone degradation mechanism organic wastewater.
Qizhou Dai Shaoqing Cai Ming Hua Jiade Wang Jianmeng Chen
College of Biological and Environmental Engineering,Zhejiang University of Technology,Hangzhou 310032,P R China
国际会议
哈尔滨
英文
1551-1554
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）