臭氧降解4-氯硝基苯的实验研究
首发时间:2010-12-07
摘要:实验采用臭氧氧化降解水体中的4-氯硝基苯,考察PH、初始浓度、臭氧投加量及碳酸氢根浓度等因素对去除效果的影响,并初步探讨了其氧化降解机理。研究结果表明,在碱性条件下,4-氯硝基苯的降解速率较大,30min后去除率达96%以上。反应体系中初始浓度越高,PNCB降解速率越慢,但绝对去除量增加。向反应体系中加入碳酸氢根后,PNCB去除率明显下降,说明羟基自由基的氧化在反应过程中占主要地位。
For information in English, please click here
The Research of Ozone oxidation degradation 4-chloronitrobenzene
Abstract:The degradation of p-Chloronitrobenzene(PNCB) with ozonation was studied and the impact of value of PH, initial concentration , ozone dosage and bicarbonate concentration was also investigated . This article discussed the mechanism of PNCB oxidative degradation. The experimental results showed that the degradation rates of 4-chloronitrobenzene were higher in alkaline conditions, the removal rate was 96% after 30min. The higher initial concentration ,the degradation rate of PNCB was slower in reaction. But the absolute amount of removal was increased. Added bicarbonate , the degradation rate of PNCB decreased. It shows the hydroxyl radical oxidation dominated in the reaction.
Keywords: ozone 4-chloronitrobenzene factors
基金:
论文图表:
引用
No.4394247490910129****
同行评议
共计0人参与
勘误表
臭氧降解4-氯硝基苯的实验研究
评论
全部评论0/1000