化工环保2018，Vol.38Issue(3)：353-357,5.DOI:10.3969/j.issn.1006-1878.2018.03.019
萃取法分离回收不锈钢酸洗污泥硫酸浸出液中的重金属
Extraction and recovery of heavy metals from sulfuric acid leaching solution of stainless steel pickling sludge
摘要
Abstract
The sulfuric acid leaching solution of stainless steel pickling sludge was extracted with non-saponified and saponified P204 extractant. Under the conditions of leaching solution pH 0.80,non-saponified P204 volume fraction 25%,volume ratio of extractant to leaching solution 1∶2 and extraction time 5 min,the extraction rate of Fe3+,Cr3+and Ni2+ was 99.64%,3.98% and 6.99%,respectively,and the pH of raffinate was 0.64. The raffinate after Fe3+ removal was extracted with saponified P204 extractant and under the conditions of P204 volume fraction 25%,volume ratio of extractant to leaching solution 1∶2,saponification rate 60%,raffinate pH 1.50 and extraction time 5 min,the extraction rate of Ni2+ and Cr3+ was 93.12% and 20.69%,and the pH of the secondary raffinate was 2.63.关键词
萃取/重金属/强酸/P204/皂化Key words
extraction/heavy metal/strong acid/P204/saponification分类
资源环境引用本文复制引用
赵宗锋,刘志英,徐炎华,李海兵,赵贤广..萃取法分离回收不锈钢酸洗污泥硫酸浸出液中的重金属[J].化工环保,2018,38(3):353-357,5.基金项目
江苏省高校自然科学研究计划项目(16KJA610002) （16KJA610002）
"十三五"国家重点研发计划资助项目(2017YFB0602500). （2017YFB0602500）
