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| 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 |
| Received:June 24, 2016 |
| DOI： |
| 中文关键词: 微生物冶金 紫色色杆菌 废旧印刷线路板 金 浸出 |
| 英文关键词: microbial metallurgy Chromobacterium violaceum WPCB gold leaching |
| 基金项目:山东省自然科学基金(ZR2013EEM008)。 |
| Author Name | Affiliation | E-mail | | GE Zhongying | College of Environment and Safety Engineering, Qingdao University of Science &
Technology, Qingdao 266042, Shandong, China | ge2090@foxmail.com | | LI Jingying | College of Environment and Safety Engineering, Qingdao University of Science &
Technology, Qingdao 266042, Shandong, China | lijy741018@qust.edu.cn | | AN Ni | College of Environment and Safety Engineering, Qingdao University of Science &
Technology, Qingdao 266042, Shandong, China | | | NA Hong | College of Environment and Safety Engineering, Qingdao University of Science &
Technology, Qingdao 266042, Shandong, China | |
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| 中文摘要: |
| 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150 mL菌液中WPCB物料加入量为0.5 g，在pH=10.5条件下浸出8天，WPCB中金的浸出率可达68.14%。 |
| 英文摘要: |
| HCN is produced by Chromobacterium violaceum in the metabolic process. Thus, Chromo- bacterium violaceum can leach gold from waste printed circuit boards (WPCB). Several important factors influencing 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 leaching rate of 68.14% was achieved after 0.5 g of WPCB powder was leached for 8 days in 150 mL solution at pH=10.5. |
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