Release kinetics of Ba and Pb contained in WPCBs during the traditional hydrometallurgical process

摘要：

　　The release kinetics of heavy metals (Ba and Pb) contained in WPCBs,during the traditional hydrometallurgical process,were investigated in this study.The effects of different conditions,i.e.particle size,solid/liquid ratio,amount of H2O2 and HNO3,HNO3 concentration,react time and temperature,on Ba and Pb release were examined.The highest release rates of Ba and Pb were obtained.For Ba,partiele size was <100 mesh,solid/liquid ratio was 1∶2,HNO3 concentration (HNO3∶H2O,v/v) was 1∶2,amount of both H2O2 and HNO3 were 6 mL,react time was 4 h and temperature was 50 ℃.For Pb,particle size was 40-20 mesh,solid/liquid ratio was 1 ∶3,HNO3 concentration was 1∶3,amount of both H2O2 and HNO3 were 4 mL,react time was 2 h and temperature was 50 ℃.The results showed that the highest release concentration of Ba and Pb were up to 76.89 g/L and 2.18 g/L,respectively.

关键词： WPCBs hydrometallurgical release concentration heavy metals Ba Pb

作者: Jinxiu Huang Mengjun Chen Haiyan Chen Quan Sun

作者单位: Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, School of Envir Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Ts

会议类型: 国际会议

会议名称: The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))

会议地点: 北京

会议语种:英文

页码: 451-460

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）