摘要
采用紫外光助零价铁活化过硫酸盐反应体系(UV-Fe(0)/PS)降解水中的氯苯,对比UV-Fe(0)/PS、Fe(0)/PS、UV/PS、PS等反应体系的处理效果,考察过硫酸盐投加量、Fe(0)投加量、pH值等对氯苯降解的影响,结果表明:Fe(0)和紫外光产生了良好的协调作用,大大提高了氯苯的降解率;初期反应体系中,过硫酸盐与Fe(0)投加量的提高,都可显著提升氯苯的降解率,但是持续增加过硫酸盐与Fe(0)投加量,不会显著增加反应体系对氯苯的降解效果。在酸洗及中性条件下,氯苯的去除率均可达到较好的效果,在强碱条件下氯苯的去除率相对较低。
Targeting to remove chlorobenzene in aqueous solution, adegradation system of UV-Fe（0） activated persulfate was built. The removal effectiveness of chlorobenzene with UV-Fe（0）/PS process, Fe（0）/PS process, UV/PS process and PS process was compared. Then the effects of persulfate dose, Fe（0） dose, as well as pH on the degradation rate of chlorobenzene were discussed. The results showed the chlorobenzene removal efficiency can be significantly improved through the combination of UV process with Fe（0） process. In the initial reaction system, the degradation rate of chlorobenzene can be greatly improved by increasing the dose of persulfate and Fe（0）. While too much Fe（0） and persulfate could not increase the rate of degradation. The removal rate of chlorobenzene was higher under the conditions of acid or neutral, while the removal rate of chlorobenzene was lower under the condition of alkali.
作者
方辉
浦燕新
朱伟青
许龙霞
Fang Hui;Pu Yanxin;Zhu Weiqing;Xu Longxia(Jiangsu WELLE Environmental Co., Ltd., Changzhou 213125, China)
出处
《广东化工》
CAS
2018年第11期102-103,69,共3页
Guangdong Chemical Industry
关键词
过硫酸盐
氯苯
硫酸根自由基
影响因素
persulfate
chlorobenzene
sulfate radical
influence factors
