铝易拉罐/Fe(Ⅱ)/O_2体系降解对氨基苯胂酸的机理  

Mechanism of degradation of p-arsanilic acid in aluminum beverage cans(AlBCs)/Fe(Ⅱ)/O_2 system

作　　者：刘玉坤[1] 郑星 陈勐[1] 郑经堂[1] LIU Yukun ZHENG Xing CHEN Meng ZHENG Jingtang(State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China Beijing ZHDS Environmental Protection Technology Co. Ltd. , Beijing 100080,China)

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,青岛266580 [2]北京中环鼎盛环保科技有限责任公司,北京100080

出　　处：《环境工程学报》2017年第3期1417-1422,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(21376268);泰山学者资助计划(ts20130929);中央高校基本科研基金资助项目(15CX08005A)

摘　　要：对氨基苯胂酸是一种常见的有机胂化合物,常作为饲料添加剂用于畜牧业。研究了在酸性条件下(pH<3.5)铝制易拉罐(AlBCs)/Fe(Ⅱ)/O_2体系降解水中的对氨基苯胂酸的机理。通过对各种实验参数如pH值、Fe(Ⅱ)的浓度、羟基自由基清除剂和气体氛围等条件的考察,发现:在酸性条件下,零价铝发生电子转移,体系中的溶解氧和水得电子生成过氧化氢,在外加Fe(Ⅱ)的条件下,促进了芬顿反应的发生,产生强氧化性的物质(·OH),实现对对氨基苯胂酸的氧化降解。The p-arsanilic acid is a common organic arsenic compound often used as a additive in livestock feed.In this study,we investigated the mechanism of p-arsanilic acid degradation utilizing an Al beverage cans（ AlBCs） /Fe（ Ⅱ）/O2 system under acidic conditions（ pH 〈3. 5）. By studying the effects of a variety of experimental parameters,such as pH,Fe（ Ⅱ） concentration,the use of a hydroxyl radical scavenger,and the type of gas atmosphere used,we identified the mechanism of p-arsanilic acid degradation. Under acidic conditions,zero-valent aluminum underwent electron transfer,and synchronously,the dissolved oxygen and H2O2 produce electron-generated H2O2.In the presence of Fe（ Ⅱ）,the Fenton reaction was promoted,and the strongly oxidizing species（ ·OH） generated degraded the p-arsanilic acid.

关 键 词：对氨基苯胂酸 铝制易拉罐 芬顿反应 

分 类 号：X523[环境科学与工程—环境工程]