超声脉冲电沉积法回收含铜电镀废液中铜的工艺研究  

Study on the Process of Copper Recycling from Copper-containing Electroplating Effluent with Ultrasonic Pulse Electrolysis

作　　者：吴佳[1] 张振忠[1] 赵芳霞[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009

出　　处：《材料导报》2010年第4期102-105,114,共5页Materials Reports

基　　金：科技部中小型企业技术创新基金(08C26213700982);江苏省科技厅社会发展计划(BS2007120);南京工业大学无机及复合新材料重点实验室资助项目

摘　　要：采用超声脉冲电解法从含铜电镀废液中回收铜粉,系统研究了电流密度、占空比、脉冲频率、温度、超声功率等因素对铜粉回收率和剩余铜离子浓度的影响,并采用SEM、XRD等对所回收的铜粉进行表征。研究结果表明,各因素对铜离子回收率影响规律不同;较优的铜粉回收工艺为:电流密度1000A/m2、占空比50%、脉冲频率1000Hz、温度40℃、超声功率640W,在此工艺下铜离子的回收率达98.75%,所回收的铜粉呈枝晶状;加入表面活性剂十二烷基苯磺酸钠可使铜粉从枝晶状转变为类球状。Ultrasonic pulse electrolysis is proposed to recover copper from the copper-containing electroplating effluent. The influences of current density, duty cycle, pulse frequency, temperature and ultrasonic power on the recovery rate and residual concentration of Cu^2＋ are systematically studied. The recovery copper powders are characterized by SEM and XRD. The results show that the effects of various factors on the recovery rate of Cu^2＋ are different. The optimum recovery process is recommended as follows： current density is 1000A/m^2 , duty cycle is 50%, pulse frequency is 1000Hz, temperature is 40℃ and ultrasonic power is 640W, under this process the recovery rate of Cu^2＋ is 98. 75% and the recovery copper powder is dendritical. The addition of SDBS can make the morphology of ultrafine copper powder from the dendrite shape into near-spherical shape.

关 键 词：电镀废液 超声脉冲电解法 超细铜粉 

分 类 号：TQ153.14[化学工程—电化学工业] X705[环境科学与工程—环境工程]