Leaching Characteristics of Lead from Waste Printed Circuit Boards

摘要：

The leaching environment was simulated to explore, the release rule of Pb in PCBs under conditions with different pH value, liquid/solid ratio and saturated degree. The results of leaching tests showed that the concentration of Pb in leachate increased as the pH of extraction fluid reduced, and it had a significant increase at the pH value of 3.20 and 4.57. The influence of the liquid/solid ratio on Pb leaching behavior was insignificant. In the dynamic leaching experiments, the cumulative leaching amount of Pb increased when the pH reduced, and saturated degree had no significant effect on it. It could be concluded that, by the action of rain, the leaching concentration and cumulative leaching amount of Pb would exceed the limitation of surface water V, and pollute surface water in the long-term run.

关键词： waste PCBs lead simulation dynamic leaching

作者: Quanyin TAN Pixing SHI Jinhui LI

作者单位: School of Environment, Tsinghua University, Beijing, China

会议类型: 国际会议

会议名称: The Sixth International Conference on Waste Management and Technology(第六届固体废物管理与技术国际会议 ICWMT 6)

会议地点: 苏州

会议语种:英文

页码: 257-262

在线出版日期: 2011-08-30（万方平台首次上网日期，不代表论文的发表时间）