Denitrification of groundwater using a sulfur-oxidizing autotrophic denitrifying anaerobic fluidized-bed MBR: performance and bacterial community structure
文献类型：期刊论文
| 作者 | Zhang, Lili; Zhang, Chao; Hu, Chengzhi; Liu, Huijuan; Qu, Jiuhui |
| 刊名 | APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
 |
| 出版日期 | 2015-03 |
| 卷号 | 99期号:6页码:2815-2827 |
| 关键词 | Anaerobic fluidized bed membrane bioreactor Sulfur-oxidizing autotrophic denitrification Groundwater Pyrosequencing Microbial community |
| 英文摘要 | This paper investigates a novel sulfur-oxidizing autotrophic denitrifying anaerobic fluidized bed membrane bioreactor (AnFB-MBR) that has the potential to overcome the limitations of conventional sulfur-oxidizing autotrophic denitrification systems. The AnFB-MBR produced consistent high-quality product water when fed by a synthetic groundwater with NO3 (-)-N ranging 25-80 mg/L and operated at hydraulic retention times of 0.5-5.0 h. A nitrate removal rate of up to 4.0 g NO3 (-)-N/L(reactor)d was attained by the bioreactor, which exceeded any reported removal capacity. The flux of AnFB-MBR was maintained in the range of 1.5-15 L m(-2) h(-1). Successful membrane cleaning was practiced with cleaning cycles of 35-81 days, which had no obvious effect on the AnFB-MBR performance. The (15) N-tracer analyses elucidated that nitrogen was converted into (15) N-2-N and (15) N-biomass accounting for 88.1-93.1 % and 6.4-11.6 % of the total nitrogen produced, respectively. Only 0.3-0.5 % of removed nitrogen was in form of (N2O)-N-15-N in sulfur-oxidizing autotrophic denitrification process, reducing potential risks of a significant amount of N2O emissions. The sulfur-oxidizing autotrophic denitrifying bacterial consortium was composed mainly of bacteria from Proteobacteria, Chlorobi, and Chloroflexi phyla, with genera Thiobacillus, Sulfurimonas, and Ignavibacteriales dominating the consortium. The pyrosequencing assays also suggested that the stable microbial communities corresponded to the elevated performance of the AnFB-MBR. Overall, this research described relatively high nitrate removal, acceptable flux, indicating future potential for the technology in practice. |
| 研究领域[WOS] | Biotechnology & Applied Microbiology |
| WOS记录号 | WOS:000350362500031 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32751]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Lili,Zhang, Chao,Hu, Chengzhi,et al. Denitrification of groundwater using a sulfur-oxidizing autotrophic denitrifying anaerobic fluidized-bed MBR: performance and bacterial community structure[J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2015,99(6):2815-2827. |
| APA | Zhang, Lili,Zhang, Chao,Hu, Chengzhi,Liu, Huijuan,&Qu, Jiuhui.(2015).Denitrification of groundwater using a sulfur-oxidizing autotrophic denitrifying anaerobic fluidized-bed MBR: performance and bacterial community structure.APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,99(6),2815-2827. |
| MLA | Zhang, Lili,et al."Denitrification of groundwater using a sulfur-oxidizing autotrophic denitrifying anaerobic fluidized-bed MBR: performance and bacterial community structure".APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 99.6(2015):2815-2827. |
入库方式： OAI收割
来源：生态环境研究中心
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