Nitrate removal during Fe(III) bio-reduction in microbial-mediated iron redox cycling systems
文献类型：期刊论文
| 作者 | Lu, Yongsheng; Liu, Hui; Huang, Xueer; Xu, Lu; Zhou, Jizhi; Qian, Guangren; Shen, Jupei; Chen, Xueping |
| 刊名 | WATER SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2021-08-15 |
| 卷号 | 84期号:4页码:985-994 |
| 关键词 | biogenic Fe(II) denitrification gaseous nitrogen iron minerals iron-reducing bacteria |
| ISSN号 | 0273-1223 |
| 英文摘要 | Fe(III) bio-reduction provides a prospect of applying the iron redox cycle to nitrate remediation in the aquatic environment. The objective of this study was to realize multiple nitrate removals in the system containing Shewanella oneidensis MR-1 (S. oneidensis MR-1) and ferrihydrite or magnetite. The results showed that with three periods of 30 mg.L-1 NO3N addition, all nitrate reduction was completed within 170 h. In the first period (0-30 h) of nitrate addition, the main contribution of nitrate removal was due to the biological reduction process by S. oneidensis MR-1, accompanied by the reduction of Fe(III). During the second (45-90 h) and third periods (100-170 h) of nitrate addition, oxidation of biogenic Fe(II) coupled with the reduction of nitrate took place. This redox reaction resulted in the production of gaseous nitrogen of 47.33% and 16.8% for ferrihydrite/S. oneidensis MR-1 and magnetite/S. oneidensis MR-1 systems, respectively. In addition, nitrite, as an intermediate product, accumulated and negatively affected nitrate removal after the third addition of nitrate. By comparing the patterns of X-ray diffraction of the iron minerals before and after the bio-reduction, it was found that ferrihydrite was transformed into magnetite, while magnetite kept its original crystal form. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45517]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Shanghai Univ, Sch Environm & Chem Engn, 99 Shangda Rd, Shanghai 200444, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yongsheng,Liu, Hui,Huang, Xueer,et al. Nitrate removal during Fe(III) bio-reduction in microbial-mediated iron redox cycling systems[J]. WATER SCIENCE AND TECHNOLOGY,2021,84(4):985-994. |
| APA | Lu, Yongsheng.,Liu, Hui.,Huang, Xueer.,Xu, Lu.,Zhou, Jizhi.,...&Chen, Xueping.(2021).Nitrate removal during Fe(III) bio-reduction in microbial-mediated iron redox cycling systems.WATER SCIENCE AND TECHNOLOGY,84(4),985-994. |
| MLA | Lu, Yongsheng,et al."Nitrate removal during Fe(III) bio-reduction in microbial-mediated iron redox cycling systems".WATER SCIENCE AND TECHNOLOGY 84.4(2021):985-994. |
入库方式： OAI收割
来源：生态环境研究中心
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