化工铬渣六价铬浸出试验方法研究  

Research on the leaching-out toxicity test method in the chromic slag

作　　者：江澜[1] 王小兰[1] 单振秀[1] 

机构地区：[1]重庆工商大学环境与生物工程学院,重庆400067

出　　处：《重庆工商大学学报（自然科学版）》2005年第2期139-142,共4页Journal of Chongqing Technology and Business University:Natural Science Edition

摘　　要：对影响化工铬渣六价铬浸出的因素(提取剂、提取时间、液固比、微孔滤膜、提取方式)进行了比较试验,结果表明:以H2O、60%H2SO4-40%HNO3、NaOH-HAc、NaAc-HAc作提取剂,采用液固比为20:1,在高温下以摇床振荡方式,提取时间为12～16 h,用0.45μm微孔滤膜,可达到分离液固两相的目的.Comparison was made of the factors which influence the leaching-out hexavalent chromium in the chromic slag: extraction agents, extracting time, solid-liguid rate, millipore membrance,extracting temperature and extracting method. Extraction agents are water, 60%H_2SO_4-40%HNO_3,NaOH-HAc,NaAc-HAc . Solid-liguid rate is 20:1.In high temperature the leaching-out toxicity in the chromic slag is the best by shaking bed,extracting time 12-16h and separating solid-liguid on 0.45μm tiny hole filter membrane. The test method suggested was suitable to evaluate the leaching-out hexavalent chromium of the chromic slag in Chongqing Dongfeng Factory of chemical industry.

关 键 词：化工铬渣 六价铬 试验方法 浸出 提取时间 微孔滤膜 H2SO4 比较试验 HNO3 NaOH 振荡方式 提取剂 液固比 H2O HAC 分离 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业] X78[环境科学与工程—环境工程]