Enhanced bioleaching efficiency of metals from e-wastes driven by biochar
文献类型：期刊论文
| 作者 | Wang, Shuhua1,2; Zheng, Yue1,2; Yan, Weifu1,2; Chen, Lixiang1,2; Mahadevan, Gurumurthy Dummi1; Zhao, Feng1 |
| 刊名 | Journal of hazardous materials
 |
| 出版日期 | 2016-12-15 |
| 卷号 | 320页码:393-400 |
| ISSN号 | 0304-3894 |
| 关键词 | Bioleaching E-wastes Biochar Alicyclobacillus spp. Sulfobacillus spp. |
| DOI | 10.1016/j.jhazmat.2016.08.054 |
| 通讯作者 | Zhao, feng(fzhao@iue.ac.cn) |
| 英文摘要 | Electronic wastes (e-wastes) contain a huge amount of valuable metals that are worth recovering. bioleaching has attracted widespread attention as an environment-friendly and low-cost technology for the recycling of e-wastes. to avoid the disadvantages of being time-consuming or having a relatively low efficiency, biochar with redox activity was used to enhance bioleaching efficiency of metals from a basic e-waste (i.e., printed circuit boards in this study). the role of biochar was examined through three basic processes: carbon-mediated, sulfur-mediated and iron-mediated bioleaching pathways. although no obvious enhancement of bioleaching performance was observed in the c-mediated and s-mediated systems, fe-mediated bioleaching was significantly promoted by the participation of biochar, and its leaching time was decreased by one-third compared with that of a biochar-free system. by mapping the dynamic concentration of fe(ii) and cu(ii), biochar was proved to facilitate the redox action between fe(ii) to fe(iii), which resulted in effective leaching of cu. two dominant functional species consisting of alicyclobacillus spp. and sulfobacillus spp. may cooperate in the fe-mediated bioleaching system, and the ratio of these two species was regulated by biochar for enhancing the efficiency of bioleaching. hence, this work provides a method to improve bioleaching efficiency with low-cost solid redox media. (c) 2016 elsevier b.v. all rights reserved. |
| WOS关键词 | PRINTED-CIRCUIT BOARDS ; SULFOBACILLUS-THERMOSULFIDOOXIDANS ; OXIDIZING BACTERIUM ; ACIDOPHILIC BACTERIA ; ELECTRONIC SCRAP ; SP NOV. ; ALICYCLOBACILLUS ; COPPER ; MINE ; IRON |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000385600700042 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374828 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhao, Feng |
| 作者单位 | 1.Chinese Acad Sci, Inst Urban Environm, CAS Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shuhua,Zheng, Yue,Yan, Weifu,et al. Enhanced bioleaching efficiency of metals from e-wastes driven by biochar[J]. Journal of hazardous materials,2016,320:393-400. |
| APA | Wang, Shuhua,Zheng, Yue,Yan, Weifu,Chen, Lixiang,Mahadevan, Gurumurthy Dummi,&Zhao, Feng.(2016).Enhanced bioleaching efficiency of metals from e-wastes driven by biochar.Journal of hazardous materials,320,393-400. |
| MLA | Wang, Shuhua,et al."Enhanced bioleaching efficiency of metals from e-wastes driven by biochar".Journal of hazardous materials 320(2016):393-400. |
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来源：中国科学院大学
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