摘要
通过搭建超声复合铁碳活化过硫酸盐耦合系统(US/PS/Fe-C),用于处理三苯甲烷衍生物结晶紫(CV).结果表明US/PS/Fe-C三元体系具有良好的耦合效果.对商品铁碳和自制的不同工艺铁碳活化剂,分别采用X-射线衍射仪和扫描电子显微镜对活化剂的结构和表面形貌进行分析.使用商品铁碳作为活化剂研究不同因素对US/PS/Fe-C三元耦合体系降解CV的影响,其最优条件为:PDS浓度2 mmol·L^(-1),铁碳活化剂1 g·L^(-1),pH未调,30 min后对质量浓度为15 mg·L^(-1)CV的去除率达90%.探究阴阳离子对于体系的影响,发现Mg^(2+)和NO_(3)^(-)对体系处理几乎没有影响,Mn^(2+)、Cl^(-)和CO_(3)^(2-)对于体系的处理有一定的抑制作用,Fe^(2+)在低浓度时可以促进反应,在高浓度时会抑制反应.通过加入不同的淬灭剂,得出在该体系中主要含有^(1)O_(2)、SO_(4)^(-)·、·O_(2)^(-)和·OH这4种活性物质.
A coupling system of ultrasonic composite iron-carbon activated persulfate(US/PS/Fe-C)was built to treat a triphenylmethane derivative,crystal violet(CV).The results revealed that US/PS/Fe-C ternary system had a good coupling effect.The structure and surface morphology of commercial Fe-C and self-made Fe-C catalysts were analyzed using an X-ray diffractometer(XRD)and scanning electron microscope(SEM),respectively.Finally,commercial Fe-C was used to study the effects of different factors on the CV of US/PS/Fe-C ternary coupling degradation,and the optimum conditions were as follows:PDS concentration 2 mmol·L^(-1),iron-carbon catalyst 1 g·L^(-1),pH without adjustment,and the removal rate of 15 mg·L^(-1)CV reached 90%after 30 min.To explore the effects of anions and cations on the system,it was observed that Mg^(2+)and NO_(3)^(-)had almost no effect on the treatment of the system,and Mn^(2+),Cl^(-),and CO_(3)^(2-)had a certain effect on the treatment of the system,whereas Fe^(2+)could promote the reaction at low concentration and inhibit the reaction at high concentration.By adding different quenchants,it was concluded that there were four types of active substances:^(1)O_(2),SO_(4)^(-)·,·O_(2)^(-),and·OH.
作者
李柄池
李昊阳
徐祺辉
尤宏
李之鹏
谢冰涵
柳峰
LI Bing-chi;LI Hao-yang;XU Qi-hui;YOU Hong;LI Zhi-peng;XIE Bing-han;LIU Feng(School of Marine Science and Technology,Harbin Institute of Technology,Weihai 264200,China;State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin 150090,China)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2023年第10期5578-5586,共9页
Environmental Science
基金
国家自然科学基金项目(51408158)
山东省自然科学基金项目(ZR2017MEE020)。
关键词
高级氧化
过硫酸盐(PDS)
铁碳微电解
超声
降解
advance oxidation process
persulfate(PDS)
iron-carbon micro-electrolysis
ultrasound
degradation
作者简介
李柄池(1998-),男,硕士研究生,主要研究方向为高级氧化有机废水处理,E-mail:394135174@qq.com;通信作者:尤宏,E-mail:youhong@hit.edu.cn。
