CAJ | 학술논문

以含有一定浓度硼酸的含镍电镀废水作为阴极液，2％的NaOH水溶液为阳极液，阴离子交换膜为隔膜材料组成隔膜电解装置，对含镍电镀废水进行了回收工艺研究。考察了电解时间、电流密度、pH值、温度及硼酸浓度对镍回收率的影响。结果表明，延长反应时间、提高电解温度、增加硼酸浓度有利于提高回收率。在电流密度为300 A／m2，pH=4，温度为35℃，硼酸浓度为25 g／L的最佳工艺条件下电解6 h，镍的回收率高达96.64％，所得镍为松枝状结构电解镍，纯度为94.69％。
이함유일정농도붕산적함얼전도폐수작위음겁액，2％적NaOH수용액위양겁액，음리자교환막위격막재료조성격막전해장치，대함얼전도폐수진행료회수공예연구。고찰료전해시간、전류밀도、pH치、온도급붕산농도대얼회수솔적영향。결과표명，연장반응시간、제고전해온도、증가붕산농도유리우제고회수솔。재전류밀도위300 A／m2，pH=4，온도위35℃，붕산농도위25 g／L적최가공예조건하전해6 h，얼적회수솔고체96.64％，소득얼위송지상결구전해얼，순도위94.69％。
The nickel-containing electroplating waste water has been treated by anion exchange membrane e-lectrolysis device. The effects of electrolysis time,current density,pH,temperature and concentration of boric acid on nickel recovery were studied in this paper. The results showed that the increasing of reaction time,e-lectrolysis temperature,the concentration of boric acid could improve the recovery rate. Optimization of the e-lectrolysis conditions were obtained as follows:electrolysis time of 6 h,a current density of 300A / m2,pH =4,a temperature of 35℃,a boric acid concentration of 25g/L. The pine - like electrolytic nickel was a-chieved,recovery rate of nickel was 96. 64%,purity of nickel was 94. 69 %.