水中氯离子对D201-OH去除邻苯二甲酸二甲酯性能的影响  

Effect of chloride ion on the removal of dimethyl phthalate by D201-OH

作　　者：蒋梦云 许正文[1,2] 史静 陈雅婷[1,2] 殷丹阳 陆建刚 邵颖[1,2] 张炜铭[4] JIANG Mengyun;XU Zhengwen;SHI Jing;CHEN Yating;YIN Danyang;LU Jiangang;SHAO Ying;ZHANG Weiming(Collaborative Innovation Center of Atmospheric Environment and Equipment Technology in Jiangsu Province,Nanjing University of Information Science&Technology,Nanjing Jiangsu 210044;School of Environmental Science and Engineering,Nanjing University of Information Science&Technology,Nanjing Jiangsu 210044;School of Technology,China Pharmaceutical University,Nanjing Jiangsu 211198;School of the Environment,Nanjing University,Nanjing Jiangsu 210023)

机构地区：[1]南京信息工程大学,江苏省大气环境与装备技术协同创新中心,江苏南京210044 [2]南京信息工程大学环境科学与工程学院,江苏南京210044 [3]中国药科大学工学院,江苏南京211198 [4]南京大学环境学院,江苏南京210023

出　　处：《环境污染与防治》2018年第8期875-879,883,共6页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51408612);江苏省自然科学基金资助项目(No.BK20140660);江苏高校优势学科建设工程资助项目;江苏省青蓝工程项目。

摘　　要：以水中无机Cl^-为研究对象,考察了不同浓度的Cl^-对强碱性阴离子交换树脂D201-OH降解/吸附去除水中邻苯二甲酸二甲酯(DMP)及其水解产物的影响。结果表明:当溶液中Cl^-<3mmol/L时,溶液平衡pH和DMP的去除速率都随着Cl^-浓度升高而增大,溶液相中总有机物的去除速率也随Cl^-浓度的升高而加快;当Cl^->3mmol/L时,溶液平衡pH和DMP去除速率不随Cl^-浓度的升高而变化,但总有机物的去除速率随Cl^-浓度的升高明显降低;在水解的初始阶段,Cl^-的存在会明显改变溶液相和树脂相中邻苯二甲酸单甲酯量,但对平衡时的树脂相和溶液相水解产物都没有明显的影响;Cl^-的存在对柱吸附效果与未加Cl^-相比没有明显的变化,但处理量明显降低,出水pH增大明显。In the present study,the influence of chloride ions on the removal of dimethyl phthalate by D201-OH has been investigated.When Cl-<3 mmol/L,removal rate of dimethyl phthalate,total organics and equilibrium solution pH all increased with the increasing chloride concentration;when Cl->3 mmol/L,with the increase of chloride concentration,equilibrium solution pH and the removal rate of dimethyl phthalate did not increase and the total organics removal rate decreased.In the initial stages of the hydrolysis,the presence of chloride increased the mass of monomethyl phthalate in solution and resin phase.On the other hand,the effect of chloride ion on the final components of the hydrolysis products(in the solution and resin phase)was negligible.Fix-bed column runs indicated that the dissolved chloride had no effect on the removal efficiency of dimethy phthalate.However,the volume of the effluent declined obviously and the pH values dramatically increased.

关 键 词：无机Cl- 邻苯二甲酸二甲酯 催化-降解 吸附 离子交换 

分 类 号：X703[环境科学与工程—环境工程]