High recycling efficiency and elemental sulfur purity achieved in a biofilm formed membrane filtration reactor
文献类型：期刊论文
| 作者 | Li, Zhi-Ling; Zhang, Shu-Ming; Chen, Fan; Yu, Hua-Rong; Shao, Sen-Lin; Nan, Jun; Wang, Ai-Jie; Liu, Wen-Zong ; Huang, Cong
|
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 130页码:1-12 |
| 关键词 | Biofilm formed membrane filtration reactor Denitrification and desulfurization S-0 recovery S-0 purity Removal of sulfide and nitrate |
| ISSN号 | 0043-1354 |
| 文献子类 | Article |
| 英文摘要 | Elemental sulfur (S-0) is always produced during bio-denitrification and desulfurization process, but the S-0 yield and purification quality are too low. Till now, no feasible approach has been carried out to efficiently recover S-0. In this study, we report the S-0 generation and recovery by a newly designed, compact, biofilm formed membrane filtration reactor (BfMFR), where S-0 was generated within a Thauera sp. strain HDD-formed biofilm on membrane surface, and then timely separated from the biofilm through membrane filtration. The high S-0 generation efficiency (98% in average) was stably maintained under the operation conditions with the influent acetate, nitrate and sulfide concentration of 115, 120 and 100 mg/L, respectively, an initial inoculum volume of approximate 2.4 x 10(8) cells, and a membrane pore size of 0.45 mu m. Under this condition, the sulfide loading approached 62.5 kg/m(3)center dot d, one of the highest compared with the previous reports, demonstrating an efficient sulfide removal and S-0 generation capacity. Particular important, a solid analysis of the effluent revealed that the recovered S-0 was adulterated with barely microorganisms, extracellular polymeric substances (EPSs), or inorganic chemicals, indicating a fairly high S-0 recovery purity. Membrane biofilm analysis revealed that 80.7% of the generated S-0 was accomplished within 45-80 mu m of biofilm from the membrane surface and while, the complete membrane fouling due to bacteria and EPSs was generally observed after 14-16 days. The in situ generation and timely separation of S-0 from the bacterial group by BfMFR, effectively avoids the sulfur circulation (S2- to S-0, S-0 to SO42-, SO42- to HS-) and guarantees the high S-0 recovery efficiency and purity, is considered as a feasible approach for S-0 recovery from sulfide- and nitrate-contaminated wastewater. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41267]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Zhi-Ling,Zhang, Shu-Ming,Chen, Fan,et al. High recycling efficiency and elemental sulfur purity achieved in a biofilm formed membrane filtration reactor[J]. WATER RESEARCH,2018,130:1-12. |
| APA | Li, Zhi-Ling.,Zhang, Shu-Ming.,Chen, Fan.,Yu, Hua-Rong.,Shao, Sen-Lin.,...&Huang, Cong.(2018).High recycling efficiency and elemental sulfur purity achieved in a biofilm formed membrane filtration reactor.WATER RESEARCH,130,1-12. |
| MLA | Li, Zhi-Ling,et al."High recycling efficiency and elemental sulfur purity achieved in a biofilm formed membrane filtration reactor".WATER RESEARCH 130(2018):1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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