新型重金属离子捕集剂的合成及其对废水中铜离子的捕集作用  

Synthesis of a heavy metal ion trapping agent and it application in treatment of copper-containing wastewater

作　　者：张余[1] 刘代琴[1] 苏纯华[1] 余训民[1] 关洪亮[1] 

机构地区：[1]武汉工程大学环境与城市建设学院,湖北武汉430073

出　　处：《化学研究》2011年第1期69-73,共5页Chemical Research

基　　金：湖北省科技攻关项目(2007AA101C70);武汉工程大学研究生研究创新基金资助项目

摘　　要：以活化硅胶为载体,γ-氯丙基三甲氧基硅烷为偶联剂,由乙二胺和二硫化碳合成了新型的具有螯合功能的氨基硫代甲酸聚合物(EPCR).研究了EPCR用量、pH值、反应时间、温度等对乙二胺四乙酸(EDTA)配合Cu2+溶液中Cu2+去除率的影响,确定了最佳去除条件.结果表明,EPCR对Cu2+的最大吸附量为34.10mmol/g,最高去除率可达99.68%.吸附铜离子后的捕集剂经稀硫酸洗脱后可再利用,去除效率仍然在99%以上,洗脱的铜可回收利用.A new type of heavy metal ion trapping agent poly（amino thiocarbamate） with cheating function（coded as EPCR） was synthesized from ethylenediamine and carbon disulfide in the presence of activated silica gel as the support and γ-chloropropyl-trimethoxy silane as the coupling agent.The influence of EPCR dosage,pH value,reaction time,and temperature on the removal rate of Cu2＋ ions in Cu2＋-ethylenediamine tetraacetic acid（EDTA） complex solution was examined,and the optimized condition for removing Cu2＋ was established.Results show that EPCR had a maximum adsorption capacity of 34.10 mmol/g for Cu2＋ ions,and Cu2＋ was removed at a highest rate of 99.68%.Used EPCR after adsorbing Cu2＋ ions could be recycled by elution in diluted sulfuric acid,and the removal efficiency was maintained at 99%.Besides,the eluted copper could also be reused.

关 键 词：重金属离子 捕集剂 铜离子 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]