N,N-二乙基-N’-氟取代苯甲酰基硫脲应用于镍废水处理研究  

Study of N,N-diethyl-N’-fluorobenzoylthioureas is applied to treating waste water of containing nickel ion

作　　者：庞海霞[1] 熊纳纳 史娟[1] 姜敏[1] 葛红光[1] 刘存芳[1] 田光辉[1] PANG Hai-xia;XIONG Na-na;SHI Juan;JIANG Min;GE Hong-guang;LIU Cun-fang;TIAN Guang-hui(Shaanxi Key Laboratory of Catalysis,School of Chemical and Environmental Sciences,Shaanxi University of Technology,Hanzhong 723001,China)

机构地区：[1]陕西省催化基础与应用重点实验室陕西理工大学化学与环境科学学院,陕西汉中723001

出　　处：《应用化工》2019年第3期625-627,共3页Applied Chemical Industry

基　　金：陕西省教育厅2017年重点科学研究计划(重点实验室)(17JS026);2017年陕西理工大学校级科研项目(SLGKY2017-10);陕西省科技厅社会发展科技攻关项目(2018SF-307)

摘　　要：利用N,N-二乙基-N’-氟取代苯甲酰基硫脲的强配位性研究了其对废水中镍离子的处理作用,并利用火焰原子吸收法对残留镍离子含量进行测定。结果表明,含Ni(II)500 mg/L的模拟废水,在絮凝剂聚合氯化铝与聚丙烯酰胺存在下,酰基硫脲可在pH 7～8范围内将Ni(II)离子沉淀,且残留镍含量远低于国家排放标准。本方法的优点在于:在接近中性的条件下可将镍离子沉淀完全,处理后的废液可不经调节pH直接排放,沉淀下来的酰基硫脲与Ni(II)离子络合物残渣经过酸处理,可重新释放出镍离子和硫脲沉淀,沉淀剂的回收率达72.1%,降低废水处理成本。This test based on strong coordination capacity of N,N- diethyl- N’-fluorobenzoylthioureas to study its effect on treating nickel ion in waste water,upon addition of polyaluminium chloride and polyacrylamide flocculant acyl thiourea was used to treat waste water containing Ni(II) 500 mg/L within the scope of pH in 7~8.Then the concentration of residual Ni 2+ in treated water was determinated by the flame atomic absorption,the result showed that was far lower than the national discharge standard of Ni 2+.The advantage of this method:first nickel ion can be fully precipitated under the condition close to neutral and without adjusting the pH of solution;second,when adding acid to the complex precipitation of acyl thiourea and Ni ion,the precipitation would be decomposed into nickel ion and the acyl thiourea precipitate instead.So it was easy to recycle nickel ion of waste water and the recovery rate of acyl thiourea was 72.1%,it would dramatically lower costs of waste water treatment.

关 键 词：N N-二乙基-N’-氟取代苯甲酰基硫脲 镍离子 废水处理 再利用 

分 类 号：TQ013[化学工程]