摘要
采用沉淀－电解法从ＣＯＤ分析废液中回收银。首先将废液中银沉淀析出，制成高浓度含银电解液，然后以不锈钢作阴、阳极，在极距１０ｍｍ、电流密度０．２８Ａ／ｄｍ￣２条件下进行电解，回收废液中银。该方法操作简便，银回收率为９５％以上，纯度达９９．５％以上。
A precipitation-electrolysis process was used to recover silver from waste liquorgenerated in COD analysis.At first,the silver contained in the waste liquor was precipitatedand made into a concentrated electrolytic solution. Then the solution was electrolysed torecover silver under the conditions of 10mm of distance between anode and cathode made ofstainless steel and0.28A/dm￣2 of current density.This process was characterized by simpleoperation,more than 95%of silver vecovery rate and 99.5%of recovered silver puritycould be achieved.
出处
《化工环保》
CAS
CSCD
北大核心
1995年第6期355-359,共5页
Environmental Protection of Chemical Industry
关键词
COD
废液
沉淀-电解法
银
回收
COD analysis waste liquor, precipitation,electrlysis, silver recovery.
