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Li D, Zhao Y, Wei D, Tang C, Wei T. Key issues to consider toward an efficient constructed wetland-microbial fuel cell: the idea and the reality. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11559-11575. [PMID: 38225491 DOI: 10.1007/s11356-024-31984-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024]
Abstract
The research on constructed wetland (CW) and microbial fuel cell (MFC) has been separate studies worldwide with crucial achievements being made in both fields. Due to environmentally friendly feature (of CW) and rich microbial population and excellent electrode catalytic activity (of MFC), CW and MFC have their own anticipated application prospect in wastewater purification and biological electricity generation. More significantly, the idea of embedding MFC into CW to form CW-MFC expands the scope for both of them and this has received much interest in recent years due to its striking features of sewage treatment efficiency, electricity generation, sustainability, and environmental friendliness. The increasing interest and the lack of soul of CW-MFC emerging to the new researchers reflect the need to recall the idea and summarize its development with regard to achieving its reality via some key issues This forms the basis of the paper. The paper also includes how to enhance the efficiency of electricity generation and supplement energy consumption, the degradation of emerging pollutants, and the degradation mechanism as well as the potential joint application of CW-MFC with other treatment technique. A mass of CW-MFC design parameters has been synthesized from the literature. Challenges and potential directions of CW-MFC in the future are prospected. It is expected that the paper can serve as a linkage for bridging knowledge gaps for further studies of CW-MFC.
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Affiliation(s)
- Diaodiao Li
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Yaqian Zhao
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China.
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China.
| | - Dan Wei
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Cheng Tang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Ting Wei
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Madrid, Spain
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Yu G, Chen J, Wang G, Chen H, Huang J, Li Y, Wang W, Song F, Ma Y, Wang Q, Wang M, Ling T, Shu Z, Sun J, Yu Z. Recent advances in constructed wetlands methane reduction: Mechanisms and methods. Front Microbiol 2023; 14:1106332. [PMID: 36819020 PMCID: PMC9936987 DOI: 10.3389/fmicb.2023.1106332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/10/2023] [Indexed: 02/05/2023] Open
Abstract
Constructed wetlands (CWs) are artificial systems that use natural processes to treat wastewater containing organic pollutants. This approach has been widely applied in both developing and developed countries worldwide, providing a cost-effective method for industrial wastewater treatment and the improvement of environmental water quality. However, due to the large organic carbon inputs, CWs is produced in varying amounts of CH4 and have the potential to become an important contributor to global climate change. Subsequently, research on the mitigation of CH4 emissions by CWs is key to achieving sustainable, low-carbon dependency wastewater treatment systems. This review evaluates the current research on CH4 emissions from CWs through bibliometric analysis, summarizing the reported mechanisms of CH4 generation, transfer and oxidation in CWs. Furthermore, the important environmental factors driving CH4 generation in CW systems are summarized, including: temperature, water table position, oxidation reduction potential, and the effects of CW characteristics such as wetland type, plant species composition, substrate type, CW-coupled microbial fuel cell, oxygen supply, available carbon source, and salinity. This review provides guidance and novel perspectives for sustainable and effective CW management, as well as for future studies on CH4 reduction in CWs.
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Affiliation(s)
- Guanlong Yu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Jundan Chen
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Guoliang Wang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Huifang Chen
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Jiajun Huang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Yifu Li
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Wenming Wang
- Technology Center, Hunan Pilot Yanghu Reclaimed Water Co., Ltd., Changsha, China,*Correspondence: Wenming Wang,
| | - Fengming Song
- Technology Center, Hunan Pilot Yanghu Reclaimed Water Co., Ltd., Changsha, China
| | - Yuanjun Ma
- Technology Department, Hunan Rongantai Ecological Technology Co., Ltd., Changsha, China
| | - Qi Wang
- Technology and Information Department, CCCC-TDC Environmental Engineering Co., Ltd., Tianjin, China
| | - Miaomiao Wang
- Technology and Information Department, CCCC-TDC Environmental Engineering Co., Ltd., Tianjin, China
| | - Tao Ling
- Engineering Department, China Railway Wuju Group the First Engineering Co., Ltd., Changsha, China
| | - Zhilai Shu
- Engineering Department, China Railway Wuju Group the First Engineering Co., Ltd., Changsha, China
| | - Julong Sun
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
| | - Zhi Yu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, China,Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science and Technology, Changsha, China
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Liu S, Wang Z, Feng X, Pyo SH. Refractory azo dye wastewater treatment by combined process of microbial electrolytic reactor and plant-microbial fuel cell. ENVIRONMENTAL RESEARCH 2023; 216:114625. [PMID: 36279915 DOI: 10.1016/j.envres.2022.114625] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/09/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
An innovative design of microbial electrolytic reactor (MER) coupled with Ipomoea aquaticaForsk. plant microbial fuel cell (IAF-PMFC) was developed for azo dye wastewater treatment and electricity generation. This study aims to assess the sequential degradation of azo dye and the feasibility of energy self-sufficiency in the MER/IAF-PMFC system. The decomposition of azo dye into aromatic amines and dye decolorization occurred in the MER at high hydraulic loading of 0.28 m3/(m2·d), while dye intermediates were mainly mineralized in the IAF-PMFC at low hydraulic loading of 0.06 m3/(m2·d). The final decolorization efficiency and COD removal of the combined system reached 99.64% and 92.06% respectively, even at influent dye concentration of 1000 mg/L. The effects of open/closed circuit conditions, presence/absence of aquatic plant and different cathode areas on the performance of the IAF-PMFC for treating the effluent of the MER were systematically tested, and the results showed that closed-circuit condition, plant involvement and larger cathode area were more beneficial to decolorization, detoxification and mineralization of dye wastewater, bioelectricity output, plant growth and photosynthetic rate. The power consumption by the MER was 0.0163 kWh/m3 of dye wastewater, while the highest power generation of the IAF-PMFC reached 0.0183 kWh/m3. The current efficiency of the MER for dye decolorization was as high as 942.83%, while the maximum coulombic efficiency of the IAF-PMFC for intermediates metabolism was only 6.30%, which still had much space of bioelectricity generation promotion. The MER/IAF-PMFC technology can simultaneously realize refractory wastewater treatment and balance of electricity production and consumption.
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Affiliation(s)
- Shentan Liu
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China; Biotechnology, Department of Chemistry, Faculty of Engineering, Lund University, SE-22100, Lund, Sweden
| | - Zuo Wang
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China
| | - Xiaojuan Feng
- School of Water and Environment, Chang'an University, Xi'an, 710054, China.
| | - Sang-Hyun Pyo
- Biotechnology, Department of Chemistry, Faculty of Engineering, Lund University, SE-22100, Lund, Sweden
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