重金属捕获剂EDTC协同处理EDTA-Cu/RhB的去除特性  

Removal characteristics of heavy metals chelating agent N,N-bis(dithiocarboxy) ethylenediamine(EDTC) for synergistic treatment of EDTA-Cu/RhB

作　　者：赵丹华[1,2] 廖欣欣 邓颖欣 陈柳名 梁兰芳 黄嘉豪 陈作义[1,2] ZHAO Danhua;LIAO Xinxin;DENG Yingxin;CHEN Liuming;LIANG Lanfang;HUANG Jiahao;CHEN Zuoyi(College of Chemistry and Materials Science,Guangdong University of Education,Guangzhou 510303,China;Research Center for Environmental Materials and Resource Utilization,Guangdong University of Education,Guangzhou 510303,China)

机构地区：[1]广东第二师范学院化学与材料科学学院,广东广州510303 [2]广东第二师范学院环境材料与资源利用研究中心,广东广州510303

出　　处：《工业水处理》2024年第5期141-148,共8页Industrial Water Treatment

基　　金：广东省普通高校重点领域专项(2021ZDZX4063);大学生创新实验项目(202214278007);广东省基础与应用基础研究项目(2020A1515010788);广东省普通高校特色创新项目(2019KTSCX118);广东第二师范学院校企合作横向项目资助(广东二师合D021J256号)。

摘　　要：以乙二胺(C_(2)H_(8)N_(2))和二硫化碳(CS_(2))为原料,采用共混法合成重金属捕集剂N,N-双(二硫代羧基)乙二胺(EDTC)。考察物料配比、投加顺序、溶液pH、时间和温度等因素对EDTC作为药剂协同处理废水中络合态铜(EDTA-Cu)和染料罗丹明B(Rhodamine B,RhB)双组分体系的去除特性影响,并与单组分EDTA-Cu和RhB体系的去除效果进行对比。结果表明:常温下,于180mg/L的EDTA-Cu和1800mg/L的RhB水体中投加1.3g/L EDTC时,EDTA-Cu和RhB的去除量分别高达150mg/g和850mg/g,水体pH在2~10范围内运行稳定。与EDTC处理水体中单组分EDTA-Cu和RhB的去除效果相比,EDTC可有效同时去除水体中的络合铜和RhB,且具有协同效应。因此,EDTC可作为水处理药剂应用于协同处理带有络合态金属和染料的复杂废水。In this work,the heavy metal chelating agent N,N-bis(dithiocarboxy) ethylenediamine (EDTC) was synthesized by blending method with ethylenediamine (C_(2)H_(8)N_(2)) and carbon disulfide (CS_(2)).The effects of material ratio,dosing sequence,pH and temperature in aqueous solution on the removal characteristics of EDTC as a synergistic agent for the treatment of complexed copper (EDTA-Cu) and Rhodamine B (RhB) were investigated.Furthermore,the removal efficiency was compared with those of single-component EDTA-Cu and RhB systems.The results indicated that the removal of EDTA-Cu and RhB was up to 150mg/g and 850mg/g,respectively,when 1.3g/L EDTC was added to 180mg/L EDTA-Cu and 1800mg/L RhB water at room temperature.The treatment efficiency was stable in the pH range of 2-10 in aqueous solution.Compared with the removal effect of single component EDTA-Cu and RhB treated with EDTC,EDTC can effectively simultaneous remove copper and RhB with synergistic effect.Therefore,EDTC can be applied as a water treatment agent for the synergistic treatment of complex metal and dye in complicated wastewater.

关 键 词：重金属捕集剂 络合铜 罗丹明B 双组分体系 去除特性 

分 类 号：X703.1[环境科学与工程—环境工程]