H型螯合树脂对萃余液的重金属吸附和再生性能研究  

Study on the Performance of Heavy Metals Adsorption and Regeneration of H-type Chelating Resin in Raffinate

作　　者：黄飞中 宋如梦 康亮 俞丽华 牛乙涛 HUANG Feizhong;SONG Rumeng;KANG Liang;YU Lihua;NIU Yitao(Zhejiang Gepai Cobalt New Materials Co.,Ltd.,Shaoxing 312369,China;Gansu Jingpu Detection Technology Co.,Ltd.,Lanzhou 730101,China)

机构地区：[1]浙江格派钴业新材料有限公司,浙江绍兴312369 [2]甘肃精普检测科技有限公司,甘肃兰州730101

出　　处：《绿色矿冶》2024年第6期41-47,共7页Sustainable Mining and Metallurgy

摘　　要：为回收钴精炼萃余液废水中的有价金属Ni、Co、Cd,使重金属离子浓度达到排放标准,采用一种H型IDA螯合树脂D854树脂去除萃余液沉淀后液中的重金属,并与现有工业中常用的Na型D851树脂进行重金属吸附、再生性能对比。结果表明,与D851树脂相比,H型D854树脂的重金属吸附容量大,吸附优先顺序为:Ni^(2+)>Co^(2+)>Cd^(2+);H型D854树脂吸附能力不易受原液pH变化的影响,在pH4~8范围内,吸附效果稳定;采用5BV质量分数为10%的H_(2)SO 4即可有效洗脱树脂,重金属洗脱顺序为Cd^(2+)、Co^(2+)、Ni^(2+);再生的H型D854树脂经3次重复使用后,吸附量仍能达到首次的90%以上,重金属去除效果稳定。H型D854树脂适用pH范围广,使用寿命长,易解吸、无需碱转型、再生时间短,大幅提高了萃余液废水处理效率。In order to recover the valuable metals Ni,Co and Cd in the waste water of cobalt refining raffinate and make the concentration of heavy metal ions reach the discharge standard,an H-type IDA chelating resin D854 resin was used to remove the heavy metals in the raffinate after precipitation,and the heavy metal adsorption and regeneration performance were compared with the Na-type D851 resin commonly used in the existing industry.The results showed that compared with D851 resin,H-type D854 resin had larger adsorption capacity of heavy metals,and the adsorption priority was Ni^(2+)>Co^(2+)>Cd^(2+).The adsorption capacity of H-type D854 resin is not easily affected by the pH change of the original solution,and the adsorption effect was stable in the range of pH 4~8.The resin could be effectively eluted by 5BV H_(2)SO 4 with mass fraction of 10%,and the elution order of heavy metals was Cd^(2+),Co^(2+)and Ni^(2+).The adsorption capacity of the regenerated H-type D854 resin can still reach more than 90%of the first time after three times of reuse,and the removal effect of heavy metals was stable.The H-type D854 resin has a wide pH range,long service life,easy desorption,no alkali transformation,and short regeneration time,which greatly improves the treatment efficiency of raffinate wastewater.

关 键 词：H型螯合树脂 IDA 钴精炼萃余液 吸附 重金属 

分 类 号：X703.1[环境科学与工程—环境工程]