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Bioleaching of copper- and zinc-bearing ore using consortia of indigenous iron-oxidizing bacteria

文献类型：期刊论文

作者Sajjad, Wasim1,2; Zheng, Guodong1; Zhang, Gaosen3; Ma, Xiangxian1; Xu, Wang1,2; Khan, Suliman2,4
刊名EXTREMOPHILES
出版日期2018-11-01
卷号22期号:6页码:851-863
关键词Bioleaching Iron-oxidizing bacteria Acidithiobacillus ferrooxidans Mossbauer spectroscopy
ISSN号1431-0651
DOI10.1007/s00792-018-1042-7
英文摘要Indigenous iron-oxidizing bacteria were isolated on modified selective 9KFe(2+) medium from Baiyin copper mine stope, China. Three distinct acidophilic bacteria were isolated and identified by analyzing the sequences of 16S rRNA gene. Based on published sequences of 16S rRNA gene in the GenBank, a phylogenetic tree was constructed. The sequence of isolate WG101 showed 99% homology with Acidithiobacillus ferrooxidans strain AS2. Isolate WG102 exhibited 98% similarity with Leptospirillum ferriphilum strain YSK. Similarly, isolate WG103 showed 98% similarity with Leptospirillum ferrooxidans strain L15. Furthermore, the biotechnological potential of these isolates in consortia form was evaluated to recover copper and zinc from their ore. Under optimized conditions, 77.68 +/- 3.55% of copper and 70.58 +/- 3.77% of zinc were dissolved. During the bioleaching process, analytical study of pH and oxidation-reduction potential fluctuations were monitored that reflected efficient activity of the bacterial consortia. The FTIR analysis confirmed the variation in bands after treatment with consortia. The impact of consortia on iron speciation within bioleached ore was analyzed using Mossbauer spectroscopy and clear changes in iron speciation was reported. The use of indigenous bacterial consortia is more efficient compared to pure inoculum. This study provided the basic essential conditions for further upscaling bioleaching application for metal extraction.
WOS关键词BALL MILL SPILLAGE ; ACID-MINE DRAINAGE ; PULP DENSITY ; ACIDITHIOBACILLUS-FERROOXIDANS ; CHALCOPYRITE CONCENTRATE ; THERMOPHILIC BACTERIA ; GOLD CONCENTRATE ; SULFIDE MINERALS ; MIXED CULTURES ; PARTICLE-SIZE
资助项目CAS-TWAS President's Fellowship ; Natural Science Foundation of China[41572352] ; Key Laboratory of Petroleum Resources, Gansu Province[SZDKFJJ20160601]
WOS研究方向Biochemistry & Molecular Biology ; Microbiology
语种英语
WOS记录号WOS:000446713100003
出版者SPRINGER JAPAN KK
资助机构CAS-TWAS President's Fellowship ; CAS-TWAS President's Fellowship ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Laboratory of Petroleum Resources, Gansu Province ; Key Laboratory of Petroleum Resources, Gansu Province ; CAS-TWAS President's Fellowship ; CAS-TWAS President's Fellowship ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Laboratory of Petroleum Resources, Gansu Province ; Key Laboratory of Petroleum Resources, Gansu Province ; CAS-TWAS President's Fellowship ; CAS-TWAS President's Fellowship ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Laboratory of Petroleum Resources, Gansu Province ; Key Laboratory of Petroleum Resources, Gansu Province ; CAS-TWAS President's Fellowship ; CAS-TWAS President's Fellowship ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Laboratory of Petroleum Resources, Gansu Province ; Key Laboratory of Petroleum Resources, Gansu Province
源URL[http://ir.iggcas.ac.cn/handle/132A11/89164]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Zheng, Guodong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Northewest Inst Ecoenviron & Resources, Gansu Prov Key Lab Desert & Desertificat, Key Lab Extreme Environm Microbial Resources & En, Lanzhou, Gansu, Peoples R China
4.Chinese Acad Sci, Inst Hydrol, Key Lab Aquat Biodivers & Conservat Sci, Wuhan 430072, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Sajjad, Wasim,Zheng, Guodong,Zhang, Gaosen,et al. Bioleaching of copper- and zinc-bearing ore using consortia of indigenous iron-oxidizing bacteria[J]. EXTREMOPHILES,2018,22(6):851-863.
APA Sajjad, Wasim,Zheng, Guodong,Zhang, Gaosen,Ma, Xiangxian,Xu, Wang,&Khan, Suliman.(2018).Bioleaching of copper- and zinc-bearing ore using consortia of indigenous iron-oxidizing bacteria.EXTREMOPHILES,22(6),851-863.
MLA Sajjad, Wasim,et al."Bioleaching of copper- and zinc-bearing ore using consortia of indigenous iron-oxidizing bacteria".EXTREMOPHILES 22.6(2018):851-863.

入库方式： OAI收割

来源：地质与地球物理研究所

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