Acidithiobacillus thiooxidans浸出印刷线路板中金属的研究  

Leaching of Metals from Waste Printed Circuit Boards Using Acidithiobacillus thiooxidans

作　　者：赵伟[1] 陈晨[1] 王玉光[1] 周洪波[1] 

机构地区：[1]中南大学资源加工与生物工程学院生物冶金教育部重点实验室,长沙410083

出　　处：《西南大学学报（自然科学版）》2010年第11期158-162,共5页Journal of Southwest University(Natural Science Edition)

基　　金：国家重点基础研究项目(973)(No.2004CB619204);国家自然科学基金创新研究群体科学基金(50321402)

摘　　要：印刷线路板(PCB)作为电子垃圾的主要成分,传统的处理方法环境污染严重,而且造成资源的严重浪费,因此找到无污染和可回收再利用的处理技术显得尤为重要.实验检测了利用嗜酸浸矿微生物处理印刷线路板回收其中金属的可行性,选用本实验室筛选的A.thiooxidans,对PCB中的金属进行了摇瓶浸出试验.在摇瓶培养中,10%的接种量,添加1.0 g样品时,Cu的浸出率达到了59.76%,而同期对照的H2SO4浸出试验中,其浸出率只有42.94%,对其他金属元素也有较好的效果.结果表明,利用A.thiooxidans比纯酸浸更能取得良好的效果.Printed circuit boards（PCB） are the main component of electronic waste.The traditional processing methods cause serious environmental pollution and resource waste,so it is very important to find a non-polluting and recyclable processing technology.In a study reported in this paper,an acidophilic bioleaching microorganism was used to deal with PCB and recover metals.The experiment of metal leaching from waste PCB was carried out using Acidithiobacillus thiooxidans in flask shakers.The results showed that under the conditions of 10% inoculation,59.76% of copper was leached out from 1.0 g PCB sample compared to 42.94% of copper leaching using sulphuric acid.Using A.thiooxidans for the leaching of other metals（Al,Fe,Ni,and Sb） also gave better results than using sulphuric acid.

关 键 词：印刷线路板 氧化硫硫杆菌 生物冶金 

分 类 号：X705[环境科学与工程—环境工程]