Fe(Ⅱ)/过一硫酸盐体系降解对氯愈创木酚的研究  

Degradation of 4-chloroguaiacol by Fe(Ⅱ) / peroxymonosulfate Fenton-like oxidation process

作　　者：陈丽玮[1,2] 吴斌程 王雨航[1] 李雪阳[1] 费佳慧 王平[1] 

机构地区：[1]南京林业大学生物与环境学院,南京210037 [2]南京林业大学江苏省制浆造纸科学与技术重点实验室,南京210037

出　　处：《黑龙江大学自然科学学报》2015年第3期378-383,共6页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(51408317);国家大学生实践创新训练计划资助项目(201310298011Z);江苏省制浆造纸科学与技术重点实验室开放基金资助项目(201304)

摘　　要：针对造纸漂白废水中氯代愈创木酚等有机氯化物毒性大、急需经济高效处理技术的需求,结合硫酸根自由基(SO-4·)对C-X键选择性强的特点,以对氯愈创木酚(4-CG)为目标污染物,采用Fe(Ⅱ)/过一硫酸盐(PMS)类芬顿体系,考察了Fe(II)与PMS投加量、p H值和温度等操作参数对4-CG降解效能的影响。结果表明,Fe(II)活化PMS的速率较快,可在短时间内生成大量的SO-4·,有利于实现4-CG的快速去除。该体系降解4-CG的最佳Fe(Ⅱ)/PMS摩尔比为1∶1,最佳反应p H值为3.0,4-CG的降解与反应温度成正比,降解4-CG的主要活性物种为SO-4·。本研究结果可为水中以愈创木酚为代表的有机氯化物的高效降解提供一定的理论依据与技术参考。Chlorinated organics such as chlorinated guaiacol require efficient and cost effective treatment teehnoliques due to their high toxicity. A Fe （Ⅱ）/peroxymonosulfate （Fe （Ⅱ）/PMS） system was employed to process 4-chloroguaiacol （4-CG） as a target compound because sulfate radical （ SO4^-·） has high reactivity to C-X bonds. Effects of Fe （Ⅱ） dosage, PMS dosage, pH and reaction temperature on degradation of4-CG were investigated. Fe（Ⅱ） could activate PMS to produce a large amount of SO4^-· within a few minutes, which was beneficial to rapid 4-CG degradation. The optimal molar ratio of Fe（Ⅱ） to PMS was 1：1 with the pH value of 3 in the Fe（ Ⅱ）/PMS system. 4-CG degradation efficiency was proportion to the reaction temperature. The principal reactive species in Fe （Ⅱ）/PMS system were analyzed,it was SO4^-· responsible for the 4-CG degradation. The study provided a promising approach for efficient decomposition of chlorinated guaiacol.

关 键 词：对氯愈创木酚 硫酸根自由基 过一硫酸盐 类芬顿体系 

分 类 号：TU992.3[建筑科学—市政工程]