紫色色杆菌从废旧电子线路板中浸出金的研究  

Study on Gold Leaching by Chromobacterium violaceum from Waste Printed Circuit Boards

作　　者：葛忠英 李晶莹[1] 安妮[1] 那红[1] GE Zhongying;LI Jingying;AN Ni;NA Hong(College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042

出　　处：《贵金属》2017年第1期48-52,共5页Precious Metals

基　　金：山东省自然科学基金(ZR2013EEM008)

摘　　要：紫色色杆菌代谢产生HCN,可浸出废旧电子线路板(WPCB)中的金。考察了预处理、pH值和处理量等重要因素对金浸出率的影响。结果表明,采用硝酸预处理WPCB可以提高金浸出率,每150mL菌液中WPCB物料加入量为0.5g,在pH=10.5条件下浸出8天,WPCB中金的浸出率可达68.14%。HCN is produced by Chromobacterium violaceum in the metabolic process.Thus,Chromobacteriumviolaceum can leach gold from waste printed circuit boards(WPCB).Several important factorsinfluencing the gold leaching efficiency,including pretreatment,pH and WPCB dosage,were investigated.The results showed that the pretreatment with nitric acid could improve the gold leaching rate.A leachingrate of68.14%was achieved after0.5g of WPCB powder was leached for8days in150mL solution atpH=10.5.

关 键 词：微生物冶金 紫色色杆菌 废旧印刷线路板 金 浸出 

分 类 号：TF831[冶金工程—有色金属冶金] X76[环境科学与工程—环境工程]