Optimization of Growth Conditions of Desulfovibrio desulfuricans Strain REO-01 and Evaluation of Its Cd(II) Bioremediation Potential for Detoxification of Rare Earth Tailings
文献类型：期刊论文
| 作者 | Zhang, Ping1; Wei, Chaoyang2; Yang, Fen2 |
| 刊名 | MICROORGANISMS
 |
| 出版日期 | 2025-06-28 |
| 卷号 | 13期号:7页码:1511 |
| 关键词 | ion-adsorption rare earth tailings sulfate-reducing bacteria metabolic activity of SRB cadmium immobilization carbon source optimization |
| DOI | 10.3390/microorganisms13071511 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | To promote environmentally sustainable remediation and resource recovery from ion-adsorption rare earth tailings (IRET), this study comprehensively investigated the previously isolated strain REO-01 by examining its sulfate-reducing performance, Cd(II) immobilization potential, and physiological and biochemical responses under varying environmental conditions. Strain REO-01 was identified as a Gram-negative facultative anaerobe with strong sulfate-reducing activity and effective Cd(II) immobilization capacity. During a 96 h incubation period, the strain entered the exponential growth phase within 36 h, after which the OD600 values plateaued. Concurrently, the culture pH increased from 6.83 to 7.5, and the oxidation-reduction potential (ORP) declined to approximately -300 mV. Cd(II) concentrations decreased from 0.2 mM to 3.33 mu M, corresponding to a removal efficiency exceeding 95%, while sulfate concentrations declined from 1500 mg/L to 640 mg/L, with a maximum reduction efficiency of 66.16%. The strain showed optimal growth at 25-40 degrees C and near-neutral pH (6-7), whereas elevated Cd(II) concentrations (>= 0.2 mM) significantly inhibited cell growth. A sulfate concentration of 1500 mg/L was found to be optimal for cellular activity. Among the tested carbon sources, sodium lactate at 4.67 g/L yielded the most favorable results, reducing ORP to -325 mV, increasing pH to 7.6, and lowering Cd(II) and sulfate concentrations to 3.33 mu M and 510 mg/L, respectively. These findings highlight the strong potential of strain REO-01 for simultaneous sulfate reduction and Cd(II) remediation, supporting its application in the in situ bioremediation and resource utilization of rare earth tailings. |
| URL标识 | 查看原文 |
| WOS关键词 | SULFATE-REDUCING BACTERIA ; ELECTRON-DONORS ; WASTE-WATER ; CDS NANOPARTICLES ; SULFIDE CONTROL ; ZINC REMOVAL ; HEAVY-METAL ; LOW PH ; REDUCTION ; PERFORMANCE |
| WOS研究方向 | Microbiology |
| 语种 | 英语 |
| WOS记录号 | WOS:001535772700001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215407]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Yang, Fen |
| 作者单位 | 1.Tongji Univ, Sch Environm Sci & Engn, Siping Rd 1239, Shanghai 200092, Peoples R China; 2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ping,Wei, Chaoyang,Yang, Fen. Optimization of Growth Conditions of Desulfovibrio desulfuricans Strain REO-01 and Evaluation of Its Cd(II) Bioremediation Potential for Detoxification of Rare Earth Tailings[J]. MICROORGANISMS,2025,13(7):1511. |
| APA | Zhang, Ping,Wei, Chaoyang,&Yang, Fen.(2025).Optimization of Growth Conditions of Desulfovibrio desulfuricans Strain REO-01 and Evaluation of Its Cd(II) Bioremediation Potential for Detoxification of Rare Earth Tailings.MICROORGANISMS,13(7),1511. |
| MLA | Zhang, Ping,et al."Optimization of Growth Conditions of Desulfovibrio desulfuricans Strain REO-01 and Evaluation of Its Cd(II) Bioremediation Potential for Detoxification of Rare Earth Tailings".MICROORGANISMS 13.7(2025):1511. |
入库方式： OAI收割
来源：地理科学与资源研究所
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