Abstract: The concentrated nickel-containing solution has been treated by electrolytic method,and the nickel re-covered. The influences of current intensity,concentration of nickel ions,temperature,initial pH and buffer solu-tion on the recovery of nickel are investigated. The results show that under the following conditions:using Ru-Ir coated titanium plate as anode,plate distance 20 mm,electric current 15 A,temperature 50℃,the initial mass concentration of nickel ions 20 g/L,and by aeration and agitation,the nickel recovery rate can be as high as 85.1%,and the corresponding current efficiency is 51.8%. The orthogonal experiments show that the sequence of influential factors on recovery rate is electric current > concentration of nickel ion > pH > temperature.

Key words: electroplating wastewater, nickel, electrolytic method, recovery

摘要： 以电解法处理含镍浓缩液并回收镍，考察了电流强度、镍离子浓度、温度、pH和缓冲溶液对镍回收效果的影响。结果显示，以钌铱涂层钛板为阳极，在极距为20 mm、电流15 A、温度50℃、镍离子质量浓度为20 g/L并通气搅拌的条件下，镍回收率最高达到85.1%，相应的电流效率为51.8%。正交试验结果表明，镍回收率影响因素的大小顺序是电流>镍离子浓度> pH >温度。

关键词: 电镀废水, 镍, 电解法, 回收

CLC Number: 

• X703