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| Pretreatment Comparison for Gold Extraction with Thiourea from Waste Mobile Phone Circuit Board |
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Received:August 07, 2015
Revised:August 10, 2015
Accepted:August 11, 2015
Published Online:December 24, 2015
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| DOI：10.3969/j.issn.1007-7545.2016.01.010 |
| KeyWord:watse mobile phone; Thiobacillus ferrooxidans; pretreatment; gold; thiourea |
| Author | Institution |
| Deng Mingqiang |
森蓝环保（上海）有限公司 上海 |
| Bai Jing |
森蓝环保（上海）有限公司 上海 |
| Long Fei |
中国石油装备制造分公司 |
| Bai Jianfeng |
上海电子废弃物资源化产学研合作开发中心 上海 |
| Gu Weihua |
上海电子废弃物资源化产学研合作开发中心 上海 |
| Wang Jingwei |
上海电子废弃物资源化产学研合作开发中心 上海 |
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| Abstract: |
| Waste mobile phone circuit boards were pretreated by nitric acid oxidation and bioleaching respectively. Gold was extracted from pretreated samples in thiourea system, in which thiourea concentration is 12 g/L, Fe2(SO4)3 mass fraction is 0.3%, pH value of solution is 1.5, and temperature is 30 ℃. Gold leaching rate, metal impurities removal rate, and environmental impact were taken into consideration to evaluate two pretreatment processes. The results show that nitric oxide pretreatment has more advantages in terms of metal cleaning efficiency while bioleaching pretreatment outperforms in production cost and environmental impact. |
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