Influence of Mg2+ on the growth and activity of sulfate reducing bacteria
文献类型：期刊论文
| 作者 | Cao, Jun-Ya1; Zhang, Guang-ji1,2; Mao, Zai-sha1; Fang, Zhao-heng1; Yang, Chao1,2; Han, Bao-ling2 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2009 |
| 卷号 | 95期号:1-2页码:127-134 |
| 关键词 | Sulfate reducing bacteria Magnesium Ionic concentration Salinity Precipitation |
| ISSN号 | 0304-386X |
| 通讯作者 | Zhang, GJ |
| 英文摘要 | Bioleaching liquors usually contain low concentration valuable metals and a major impurity (magnesium or calcium), and therefore it is a heavy burden and involves a complicated process to separate and enrich valuable metals from these liquors. An alternative process of selective precipitation of metals using H2S produced by sulfate reducing bacteria (SRB) is put forward. In this paper, sealed flasks were used to study the influence of Mg2+ in the form of MgCl2 center dot 6H(2)O and MgSO4 center dot 7H(2)O on the growth and activity of SRB, and the sulfide precipitation of bioleaching liquors was also studied. The experimental results show that Mg2+ ion concentration from MgCl2 center dot 6H(2)O or MgSO4 center dot 7H(2)O is a significant and favorable factor for SRB growth and activity. It is also demonstrated that enhanced activation of SRB by adding NaCl in liquor and the SRB have a high tolerance to salinity from NaCl. Adding MgSO4 center dot 7H(2)O provides a predominant condition for SRB growth, due to providing higher concentration of sulfate. The sulfide precipitation and separation of magnesium with H2S produced by SRB is found to be mainly dependent on the pH value and the H2S concentration. SRB culture solution can effectively precipitate Cu2+, Ni2+ and Fe3+ from synthetic leaching liquor in 2 min, while Mg2+ ions remain in the liquid phase. (C) 2008 Elsevier B.V. All right reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | ACID-MINE DRAINAGE ; ANAEROBIC DEGRADATION ; BED REACTOR ; BIOHYDROMETALLURGY ; CULTURES ; BIOREMEDIATION ; SOLUBILIZATION ; CEMENTATION ; CONCENTRATE ; OXIDATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262156300021 |
| 公开日期 | 2013-12-11 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6780]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Jun-Ya,Zhang, Guang-ji,Mao, Zai-sha,et al. Influence of Mg2+ on the growth and activity of sulfate reducing bacteria[J]. HYDROMETALLURGY,2009,95(1-2):127-134. |
| APA | Cao, Jun-Ya,Zhang, Guang-ji,Mao, Zai-sha,Fang, Zhao-heng,Yang, Chao,&Han, Bao-ling.(2009).Influence of Mg2+ on the growth and activity of sulfate reducing bacteria.HYDROMETALLURGY,95(1-2),127-134. |
| MLA | Cao, Jun-Ya,et al."Influence of Mg2+ on the growth and activity of sulfate reducing bacteria".HYDROMETALLURGY 95.1-2(2009):127-134. |
入库方式： OAI收割
来源：过程工程研究所
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