电镀污泥中铜和镍的去除工艺研究——电解去除铜和镍  

Removal Technology of Copper and Nickel from Electroplating Sludge——Removal of Copper and Nickel by Electrolysis

作　　者：李盼盼[1] 彭昌盛[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《电镀与精饰》2010年第2期39-43,共5页Plating & Finishing

基　　金：教育部新世纪优秀人才基金项目(NCET-08-0508)

摘　　要：研究了电镀污泥酸浸模拟液中铜和镍去除的方法和工艺,先用电解法去除其中的铜,铜的去除率接近95%,分别采用氢氧化物沉淀法和黄铵铁矾法去除剩余溶液中的铁和铬,其中黄铵铁矾法处理后溶液中ρ(Fe)和ρ(Cr)分别降至0.19 mg/L和6.25 mg/L,对后续镍的电解不产生影响;在电解回收镍的试验中,发现pH升高,镍的去除率增大,但镍的去除率不高,最大为57%。The process to remove copper and nickel from electroplating sludge acid-leaching liquid was developed. Copper was firstly removed by means of electrolysis, with the removal rate of copper close to 95 % . The Fe and Cr in residual solution were cleared up by hydroxide precipitate method and ammonium jarosite process. Accordingly, the concentrations of the Fe and Cr in solution are only 0.19mg/L and 6.25mg/L respectively, which could be negligible for the nickel electrolysis. In the nickel electrolysis experiment, higher original pH value leads to higher nickel removal rate, however, the nickel removal efficiency is not high, only 57% of the maximum.

关 键 词：电镀污泥 酸浸液 重金属去除 电解 铜 镍 

分 类 号：X781.1[环境科学与工程—环境工程]