A tartrate-EDTA-Fe complex mediates electron transfer and enhances ammonia recovery in a bioelectrochemical-stripping system
文献类型：期刊论文
| 作者 | Zhang, De-Xin; Zhai, Si-Yuan ; Zeng, Ran; Liu, Cheng-Yan; Zhang, Bo; Yu, Zhe; Yang, Li-Hui; Li, Xi-Qi; Hou, Ya-Nan; Wang, Ai-Jie
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| 刊名 | ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
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| 出版日期 | 2022-07 |
| 卷号 | 11期号:0页码:100186 |
| 关键词 | MICROBIAL FUEL-CELLS PIG SLURRY REMOVAL NITRATE ACID |
| ISSN号 | 2666-4984 |
| 英文摘要 | Traditional bioelectrochemical systems (BESs) coupled with stripping units for ammonia recovery suffer from an insufficient supply of electron acceptors due to the low solubility of oxygen. In this study, we proposed a novel strategy to efficiently transport the oxidizing equivalent provided at the stripping unit to the cathode by introducing a highly soluble electron mediator (EM) into the catholyte. To validate this strategy, we developed a new kind of iron complex system (tartrate-EDTA-Fe) as the EM. EDTA-Fe contributed to the redox property with a midpoint potential of -0.075 V (vs. standard hydrogen electrode, SHE) at pH 10, whereas tartrate acted as a stabilizer to avoid iron precipitation under alkaline conditions. At a ratio of the catholyte recirculation rate to the anolyte flow rate (RC-A) of 12, the NH4 thorn -N recovery rate in the system with 50 mM tartrate-EDTA-Fe complex reached 6.9 +/- 0.2 g N mz d 1, approximately 3.8 times higher than that in the non-EM control. With the help of the complex, our system showed an NH4 thorn -N recovery performance comparable to that previously reported but with an extremely low RC-A (0.5 vs. 288). The strategy proposed here may guide the future of ammonia recovery BES scale-up because the introduction of an EM allows aeration to be performed only at the stripping unit instead of at every cathode, which is beneficial for the system design due to its simplicity and reliability. (c) 2022 The Authors. Published by Elsevier B.V. on behalf of Chinese Society for Environmental Sciences, Harbin Institute of Technology, Chinese Research Academy of Environmental Sciences. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47766]  |
| 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 |
| 作者单位 | 1.Nanjing Tech Univ, Coll Civil Engn, Nanjing 211816, Peoples R China 2.Tianjin Chengjian Univ, Sch Environm & Municipal Engn, Tianjin Key Lab Aquat Sci & Technol, Tia 3.Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, State Key Lab Urban Water Resource & Environm, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, De-Xin,Zhai, Si-Yuan,Zeng, Ran,et al. A tartrate-EDTA-Fe complex mediates electron transfer and enhances ammonia recovery in a bioelectrochemical-stripping system[J]. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY,2022,11(0):100186. |
| APA | Zhang, De-Xin.,Zhai, Si-Yuan.,Zeng, Ran.,Liu, Cheng-Yan.,Zhang, Bo.,...&Cheng, Hao-Yi.(2022).A tartrate-EDTA-Fe complex mediates electron transfer and enhances ammonia recovery in a bioelectrochemical-stripping system.ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY,11(0),100186. |
| MLA | Zhang, De-Xin,et al."A tartrate-EDTA-Fe complex mediates electron transfer and enhances ammonia recovery in a bioelectrochemical-stripping system".ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 11.0(2022):100186. |
入库方式： OAI收割
来源：生态环境研究中心
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