废弃光盘中银的次氯酸钠-水合肼联合提取  

The Silver Extract during Waste CD with Hypochlorite-hydrazine

作　　者：刘耀源[1,2] 邹长武[1,2] 邓靓[1] 田浩杞 张云鹏[1] 乔玉红[1] 黄建豪[1] 

机构地区：[1]成都信息工程学院资源环境学院,成都610225 [2]成都信息工程学院大气环境模拟与污染控制四川省高校重点实验室,成都610225

出　　处：《科学技术与工程》2014年第12期303-305,共3页Science Technology and Engineering

基　　金：大气环境模拟与污染控制四川省重点实验室开放课题(ZZKT2013004);高原大气与环境四川省重点实验室开放课题(PAEKL-2013-Y4);中华环境保护基金会环保公益项目(2012070101);成都信息工程学院大学生创新创业训练项目(CX201305)资助

摘　　要：为提取废弃光盘反射层中的贵金属银,在常压非高温条件下联合次氯酸钠与水合肼对废弃光盘反射层中的贵金属银进行了提取。研究结果表明,次氯酸钠可使光盘反射层与盘基分离;并将银以氯化银形式析出,再通过氨水与氯化银络合后,与水合肼发生还原反应可将银以单质形态回收,银单质平均回收率高达92.99%。In order to extract the silver during waste CD, simple substance of silver was extracted with hypo- chlorite-hydrazine under atmospheric pressure and not high temperature. The result shows, the reflective layer and the base plate of waste CD are separated by NaC10 extraction method. And Ag were precipitated in form of AgC1. After NH3 . HE O and AgC1 complexing and Hydrazine hydratethe reducing, Ag can be recycled in form of simple substance. The average yield of silver is 92.99%.

关 键 词：废弃光盘 银 次氯酸钠 氨水 水合肼 

分 类 号：X76[环境科学与工程—环境工程]