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
张余,刘代琴,苏纯华,余训民＊,关洪亮
【摘要】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、p H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34.10 mmol/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.
【期刊名称】化学研究
【年(卷),期】2011(022)001
【总页数】5
【关键词】关键词:重金属离子;捕集剂;铜离子;废水处理
Abstract: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 andγ-chloropropyl-trimethoxy silane as the coupling agent.The influence of EPCR dosage,p H 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