1
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Liu S, Chen Q, Ding H, Song Y, Pan Q, Deng H, Zeng EY. Differences of microplastics and nanoplastics in urban waters: Environmental behaviors, hazards, and removal. WATER RESEARCH 2024; 260:121895. [PMID: 38875856 DOI: 10.1016/j.watres.2024.121895] [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: 03/25/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/16/2024]
Abstract
Microplastics (MPs) and nanoplastics (NPs) are ubiquitous in the aquatic environment and have caused widespread concerns globally due to their potential hazards to humans. Especially, NPs have smaller sizes and higher penetrability, and therefore can penetrate the human barrier more easily and may pose potentially higher risks than MPs. Currently, most reviews have overlooked the differences between MPs and NPs and conflated them in the discussions. This review compared the differences in physicochemical properties and environmental behaviors of MPs and NPs. Commonly used techniques for removing MPs and NPs currently employed by wastewater treatment plants and drinking water treatment plants were summarized, and their weaknesses were analyzed. We further comprehensively reviewed the latest technological advances (e.g., emerging coagulants, new filters, novel membrane materials, photocatalysis, Fenton, ozone, and persulfate oxidation) for the separation and degradation of MPs and NPs. Microplastics are more easily removed than NPs through separation processes, while NPs are more easily degraded than MPs through advanced oxidation processes. The operational parameters, efficiency, and potential governing mechanisms of various technologies as well as their advantages and disadvantages were also analyzed in detail. Appropriate technology should be selected based on environmental conditions and plastic size and type. Finally, current challenges and prospects in the detection, toxicity assessment, and removal of MPs and NPs were proposed. This review intends to clarify the differences between MPs and NPs and provide guidance for removing MPs and NPs from urban water systems.
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Affiliation(s)
- Shuan Liu
- Shanghai Institute of Pollution Control and Ecological Security, Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Qiqing Chen
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Haojie Ding
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 123456, China
| | - Yunqian Song
- Australian Centre for Water and Environmental Biotechnology (ACWEB, formerly AWMC), The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Qixin Pan
- Shanghai Institute of Pollution Control and Ecological Security, Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Huiping Deng
- Shanghai Institute of Pollution Control and Ecological Security, Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Eddy Y Zeng
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
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2
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Sun K, Lyu Q, Zheng X, Liu R, Tang CY, Zhao M, Dong Y. Enhanced water treatment performance of ceramic-based forward osmosis membranes via MOF interlayer. WATER RESEARCH 2024; 254:121395. [PMID: 38452527 DOI: 10.1016/j.watres.2024.121395] [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: 12/03/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/09/2024]
Abstract
Forward osmosis (FO) membrane processes could operate without hydraulic pressures, enabling the efficient treatment of wastewaters with mitigated membrane fouling and enhanced efficiency. Designing a high-performance polyamide (PA) layer on ceramic substrates remains a challenge for FO desalination applications. Herein, we report the enhanced water treatment performance of thin-film nanocomposite ceramic-based FO membranes via an in situ grown Zr-MOF (UiO-66-NH2) interlayer. With the Zr-MOF interlayer, the ceramic-based FO membranes exhibit lower thickness, higher cross-linking degree, and increased surface roughness, leading to higher water flux of 27.38 L m-2 h-1 and lower reverse salt flux of 3.45 g m-2 h-1. The ceramic-based FO membranes with Zr-MOF interlayer not only have an application potential in harsh environments such as acidic solution (pH 3) and alkaline solution (pH 11), but also exhibit promising water and reverse salt transport properties, which are better than most MOF-incorporated PA membranes. Furthermore, the membranes could reject major species (ions, oil and organics) with rejections >94 % and water flux of 22.62-14.35 L m-2 h-1 in the treatment of actual alkaline industrial wastewater (pH 8.6). This rational design proposed in this study is not only applicable for the development of a high-quality ceramic-based FO membrane with enhanced performance but also can be potentially extended to more challenging water treatment applications.
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Affiliation(s)
- Kuo Sun
- School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qiang Lyu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Xiangyong Zheng
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Renlan Liu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Min Zhao
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
| | - Yingchao Dong
- School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
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3
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Rastgar M, Moradi K, Burroughs C, Hemmati A, Hoek E, Sadrzadeh M. Harvesting Blue Energy Based on Salinity and Temperature Gradient: Challenges, Solutions, and Opportunities. Chem Rev 2023; 123:10156-10205. [PMID: 37523591 DOI: 10.1021/acs.chemrev.3c00168] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Greenhouse gas emissions associated with power generation from fossil fuel combustion account for 25% of global emissions and, thus, contribute greatly to climate change. Renewable energy sources, like wind and solar, have reached a mature stage, with costs aligning with those of fossil fuel-derived power but suffer from the challenge of intermittency due to the variability of wind and sunlight. This study aims to explore the viability of salinity gradient power, or "blue energy", as a clean, renewable source of uninterrupted, base-load power generation. Harnessing the salinity gradient energy from river estuaries worldwide could meet a substantial portion of the global electricity demand (approximately 7%). Pressure retarded osmosis (PRO) and reverse electrodialysis (RED) are more prominent technologies for blue energy harvesting, whereas thermo-osmotic energy conversion (TOEC) is emerging with new promise. This review scrutinizes the obstacles encountered in developing osmotic power generation using membrane-based methods and presents potential solutions to overcome challenges in practical applications. While certain strategies have shown promise in addressing some of these obstacles, further research is still required to enhance the energy efficiency and feasibility of membrane-based processes, enabling their large-scale implementation in osmotic energy harvesting.
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Affiliation(s)
- Masoud Rastgar
- Department of Mechanical Engineering, Advanced Water Research Lab (AWRL), University of Alberta, 10-367 Donadeo Innovation Center for Engineering, Edmonton, Alberta T6G 1H9, Canada
| | - Kazem Moradi
- Department of Mechanical Engineering, Advanced Water Research Lab (AWRL), University of Alberta, 10-367 Donadeo Innovation Center for Engineering, Edmonton, Alberta T6G 1H9, Canada
- Department of Mechanical Engineering, Computational Fluid Engineering Laboratory, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Cassie Burroughs
- Department of Chemical & Materials Engineering, University of Alberta, 12-263 Donadeo Innovation Centre for Engineering, Edmonton, Alberta T6G 1H9, Canada
| | - Arman Hemmati
- Department of Mechanical Engineering, Computational Fluid Engineering Laboratory, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Eric Hoek
- Department of Civil & Environmental Engineering, University of California Los Angeles (UCLA), Los Angeles, California 90095-1593, United States
- Energy Storage & Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Mohtada Sadrzadeh
- Department of Mechanical Engineering, Advanced Water Research Lab (AWRL), University of Alberta, 10-367 Donadeo Innovation Center for Engineering, Edmonton, Alberta T6G 1H9, Canada
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4
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Hu A, Liu Y, Zheng J, Wang X, Xia S, Van der Bruggen B. Tailoring properties and performance of thin-film composite membranes by salt additives for water treatment: A critical review. WATER RESEARCH 2023; 234:119821. [PMID: 36889093 DOI: 10.1016/j.watres.2023.119821] [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: 12/31/2022] [Revised: 02/11/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
During the fabrication of thin film composite (TFC) membranes by interfacial polymerization (IP), the utilization of salt additives is one of the effective methods to regulate membrane properties and performance. Despite gradually receiving widespread attention for membrane preparation, the strategies, effects and underlying mechanisms of using salt additives have not yet been systematically summarized. This review for the first time provides an overview of various salt additives used to tailor properties and performance of TFC membranes for water treatment. By classifying salt additives into organic and inorganic salts, the roles of added salt additives in the IP process and the induced changes in membrane structure and properties are discussed in detail, and the different mechanisms of salt additives affecting membrane formation are summarized. Based on these mechanisms, the salt-based regulation strategies have shown great potential for improving the performance and application competitiveness of TFC membranes, including overcoming the trade-off relationship between water permeability and salt selectivity, tailoring membrane pore size distribution for precise solute-solute separation, and enhancing membrane antifouling performance. Finally, future research directions are suggested to focus on the long-term stability assessment of salt-modified membranes, the combined use of different salt additives, and the integration of salt regulation with other membrane design or modification strategies.
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Affiliation(s)
- Airan Hu
- State Key Laboratory of Pollution Control and Resources Reuse, Advanced Membrane Technology Center, Tongji University, Shanghai 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, China
| | - Yanling Liu
- State Key Laboratory of Pollution Control and Resources Reuse, Advanced Membrane Technology Center, Tongji University, Shanghai 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, China.
| | - Junfeng Zheng
- Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Xiaomao Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Shengji Xia
- State Key Laboratory of Pollution Control and Resources Reuse, Advanced Membrane Technology Center, Tongji University, Shanghai 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, China.
| | - Bart Van der Bruggen
- Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
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5
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Wu N, Brahmi Y, Colin A. Fluidics for energy harvesting: from nano to milli scales. LAB ON A CHIP 2023; 23:1034-1065. [PMID: 36625144 DOI: 10.1039/d2lc00946c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A large amount of untapped energy sources surrounds us. In this review, we summarize recent works of water-based energy harvesting systems with operation scales ranging from miniature systems to large scale attempts. We focus particularly on the triboelectric energy, which is produced when a liquid and a solid come into contact, and on the osmotic energy, which is released when salt water and fresh water are mixed. For both techniques we display the state of the art understanding (including electrical charge separation, electro-osmotic currents and induced currents) and the developed devices. A critical discussion of present works confirms the significant progress of these water-based energy harvesting systems in all scales. However, further efforts in efficiency and performance amelioration are expected for these technologies to accelerate the industrialization and commercialization procedure.
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Affiliation(s)
- Nan Wu
- ESPCI Paris, PSL Research University, MIE-CBI, CNRS UMR 8231, 10, Rue Vauquelin, F-75231 Paris Cedex 05, France.
| | - Youcef Brahmi
- ESPCI Paris, PSL Research University, MIE-CBI, CNRS UMR 8231, 10, Rue Vauquelin, F-75231 Paris Cedex 05, France.
| | - Annie Colin
- ESPCI Paris, PSL Research University, MIE-CBI, CNRS UMR 8231, 10, Rue Vauquelin, F-75231 Paris Cedex 05, France.
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6
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Zhang B, Fu T, Zhang Q, Wang X, Tang L, Wei Q, Li Y, Peng Y. Effects of Critical Operation and Cleaning Parameters on Performances and Economic Benefits of Biogas Slurry Concentration by Forward Osmosis Membrane. MEMBRANES 2023; 13:288. [PMID: 36984675 PMCID: PMC10051890 DOI: 10.3390/membranes13030288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/06/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
Forward osmosis membrane technology (FO) shows potential application prospects in biogas slurry concentration, which is conducive to promoting the sustainable development of biogas projects. However, at present, the key influencing factors of membrane concentration using FO are not well understood. Therefore, this study analyzed the influence of draw solution concentration, pH, temperature and cross-flow velocity on the concentration efficiency of FO membrane, and optimized the operation parameters of FO membrane. The results showed that the concentration effect of the NaCl draw solution at pH 5 or 9 was better than that at pH 7. The order of factor influencing the water flux was as follows: draw liquid concentration > cross-flow velocity > operating temperature. The optimal combination obtained by orthogonal analysis was under 45 °C, with a cross-flow velocity of 1 L/min and the use of 1.5 mol/L NaCl as draw solution. The results of the membrane cleaning implied that the recovery rate of the fouled membrane after acid-base cleaning is significantly higher (88%) than other cleaning solutions. This research offers a scientific reference for applying positive osmosis technology to re-utilize biogas slurry resources.
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Affiliation(s)
- Bangxi Zhang
- Institute of Agricultural Resources and Environment, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Tianhong Fu
- School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Qinyu Zhang
- Institute of Agricultural Resources and Environment, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Xiaomin Wang
- Institute of Agricultural Resources and Environment, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Ling Tang
- Institute of Agricultural Resources and Environment, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Quanquan Wei
- Institute of Agricultural Resources and Environment, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Yun Li
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Yutao Peng
- School of Agriculture, Sun Yat-Sen University, Shenzhen 518107, China
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7
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Xue YR, Ma ZY, Liu C, Zhu CY, Wu J, Xu ZK. Polyamide Nanofilms Synthesized by a Sequential Process of Blade Coating – Spraying - Interfacial Polymerization toward Reverse Osmosis. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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8
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Porous graphene oxide surface-coated thin-film composite membrane for simultaneously increasing permeation performance and organic-fouling migration capacities. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Wang L, Lu X, Guo N, Cheng X, Liu J, Huang W, Jin Y, Zhang L, Zhao L, Zhang J, Chu H, Dong B, Wu D, Chen F. Fulvic and alginic acid separation during pressure retarded osmosis: Governing effects and fouling mechanisms. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Wang C, Park MJ, Yu H, Matsuyama H, Drioli E, Shon HK. Recent advances of nanocomposite membranes using layer-by-layer assembly. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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11
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Wang Y, Ma B, Ulbricht M, Dong Y, Zhao X. Progress in alumina ceramic membranes for water purification: Status and prospects. WATER RESEARCH 2022; 226:119173. [PMID: 36252299 DOI: 10.1016/j.watres.2022.119173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/25/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Ceramic membranes have gained increasing attention in recent years for the removal of various contaminants from water. Alumina membrane is considered as one of the most important ceramic membranes, which plays important roles not only in separation processes such as microfiltration, ultrafiltration, and nanofiltration, but also in catalysis- and adsorption- enhanced separation applications in water purification and wastewater treatment. However, there is currently still lack of a comprehensive critical review about alumina membranes for water purification. In this review, we first discuss recent developments of alumina membranes, and then critically introduce the state-of-the-art strategies for lowering fabrication cost, improving membrane performances and mitigating membrane fouling. Especially, aiming to improve membrane performance, some emerging methods are summarized such as tailoring membrane structure, developing flexible membranes, designing nano-pores for precise separation, and enhancing multi-functionalities. In addition, engineering applications of alumina membranes for water purification are also briefly introduced. Finally, the prospects for future research on alumina membranes are proposed, such as economic preparation/application, challenging precise separation, enriching multi-functionalities, and clarifying separation mechanisms.
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Affiliation(s)
- Yan Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Baiwen Ma
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Duisburg-Essen Department of Technical Chemistry II, Essen 45117, Germany
| | - Mathias Ulbricht
- University of Duisburg-Essen Department of Technical Chemistry II, Essen 45117, Germany
| | - Yingchao Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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12
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N-methylglucamine modified poly (vinyl chloride) support assists the construction of uniform dually charged nanofiltration membrane via interfacial polymerization. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Xu Y, Wang YN, Chong JY, Wang R. Thermo-responsive nonionic amphiphilic copolymers as draw solutes in forward osmosis process for high-salinity water reclamation. WATER RESEARCH 2022; 221:118768. [PMID: 35752097 DOI: 10.1016/j.watres.2022.118768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Recently, thermo-responsive nonionic amphiphilic copolymers have shown a great potential as forward osmosis (FO) draw solutes for high-salinity water desalination and zero-liquid discharge (ZLD). However, the relationship between the copolymer structural properties and key characteristics as draw solutes, as well as copolymer's chemical stability after regeneration have not been much studied. In this work, we systematically investigated poly (ethylene oxide)-block-poly (propylene oxide)-block-poly (ethylene oxide) (PEO-PPO-PEO) copolymers as draw solute. The results showed that the PEO segments significantly influenced the viscosity, osmotic pressure and lowest phase separation temperature of the copolymer aqueous solutions. Among four commercial copolymers studied, Pluronic® L35 with moderate molecular weight (Mn 1,900 Da), 50% PEO, and relatively high hydrophilic-lipophilic balance (HLB) showed the best draw solution (DS) performance. It also showed great stability in physiochemical properties and draw capacity after more than ten cycles of regeneration. On the other hand, despite the fact that membrane fouling was observed due to the use of copolymer DS, the FO flux (∼1.2 L m‒2 h‒1, as similar with the virgin membrane) was not affected when high-salinity feedwater such as seawater RO brine was applied. Overall, our study has provided a more comprehensive understanding on the characteristics of nonionic amphiphilic copolymer DS and showcased the promise of copolymer-driven FO process in high-salinity water desalination and ZLD.
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Affiliation(s)
- Yilin Xu
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Yi-Ning Wang
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Jeng Yi Chong
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Rong Wang
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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14
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Liu S, Song W, Meng M, Xie M, She Q, Zhao P, Wang X. Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 826:154048. [PMID: 35202696 DOI: 10.1016/j.scitotenv.2022.154048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Osmotic membrane bioreactors (OMBR) have gained increasing interest in wastewater treatment and reclamation due to their high product water quality and fouling resistance. However, high energy consumption (mostly by draw solution recovery) restricted the wider application of OMBR. Herein, we propose a novel pressure retarded osmosis membrane bioreactor (PRO-MBR) for improving the economic feasibility. In comparison with conventional FO-MBR, PRO-MBR exhibited similar excellent contaminants removal performance and comparable water flux. More importantly, a considerable amount of energy can be recovered by PRO-MBR (4.1 kWh/100 m2·d), as a result of which, 10.02% of the specific energy consumption (SEC) for water recovery was reduced as compared with FO-MBR (from 1.42 kWh/m3 to 1.28 kWh/m3). Membrane orientation largely determined the performance of PRO-MBR, higher power density was achieved in AL-DS orientation (peak value of 3.4 W/m2) than that in AL-FS orientation (peak value of 1.4 W/m2). However, PRO-MBR suffered more severe and complex membrane fouling when operated in AL-DS orientation, because the porous support layer was facing sludge mixed liquor. Further investigation revealed fouling was mostly reversible for PRO-MBR, it exhibited similar flux recoverability (92.4%) to that in FO-MBR (95.1%) after osmotic backwash. Nevertheless, flux decline due to membrane fouling is still a restricting factor to power generation of PRO-MBR, its power density was decreased by 38.2% in the first 60 min due to the formation of fouling. Overall, in perspective of technoeconomic feasibility, the PRO-MBR demonstrates better potential than FO-MBR in wastewater treatment and reclamation and deserves more research attention in the future.
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Affiliation(s)
- Shuyue Liu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Weilong Song
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China.
| | - Manli Meng
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Ming Xie
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, UK
| | - Qianhong She
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Pin Zhao
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Xinhua Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China
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15
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Zhang B, Wong PW, Guo J, Zhou Y, Wang Y, Sun J, Jiang M, Wang Z, An AK. Transforming Ti 3C 2T x MXene's intrinsic hydrophilicity into superhydrophobicity for efficient photothermal membrane desalination. Nat Commun 2022; 13:3315. [PMID: 35676294 PMCID: PMC9177613 DOI: 10.1038/s41467-022-31028-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 05/27/2022] [Indexed: 11/09/2022] Open
Abstract
Owing to its 100% theoretical salt rejection capability, membrane distillation (MD) has emerged as a promising seawater desalination approach to address freshwater scarcity. Ideal MD requires high vapor permeate flux established by cross-membrane temperature gradient (∆T) and excellent membrane durability. However, it’s difficult to maintain constant ∆T owing to inherent heat loss at feedwater side resulting from continuous water-to-vapor transition and prevent wetting transition-induced membrane fouling and scaling. Here, we develop a Ti3C2Tx MXene-engineered membrane that imparts efficient localized photothermal effect and strong water-repellency, achieving significant boost in freshwater production rate and stability. In addition to photothermal effect that circumvents heat loss, high electrically conductive Ti3C2Tx MXene also allows for self-assembly of uniform hierarchical polymeric nanospheres on its surface via electrostatic spraying, transforming intrinsic hydrophilicity into superhydrophobicity. This interfacial engineering renders energy-efficient and hypersaline-stable photothermal membrane distillation with a high water production rate under one sun irradiation. Membrane distillation is susceptible to thermal inefficiency and membrane wetting issues during seawater desalination. Here, authors design a MXene-engineered membrane that imparts efficient localized photothermal effect and strong water repellency, achieving sustainable freshwater production.
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Affiliation(s)
- Baoping Zhang
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong.,Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Pak Wai Wong
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Jiaxin Guo
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Yongsen Zhou
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Yang Wang
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Jiawei Sun
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Mengnan Jiang
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong
| | - Zuankai Wang
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong.
| | - Alicia Kyoungjin An
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, Hong Kong.
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Wei W, Feng X, Wang R, Zheng R, Yang D, Chen H. Electrochemical Driven Phase Segregation Enabled Dual-Ion Removal Battery Deionization Electrode. NANO LETTERS 2021; 21:4830-4837. [PMID: 34010006 DOI: 10.1021/acs.nanolett.1c01487] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Battery deionization (BDI) offers a powerful platform for integrating water treatment and energy conversion. Exploring novel BDI electrode materials with high energy storage capacity and high efficiency for both cations and anions removal is the key to advancing the BDI technique. Herein, we report the first BDI electrode material capable of simultaneously removing Cl- (58.4 mg g-1) and Na+ (8.7 mg g-1) in water with a reversible capacity of 160 mAh g-1. In situ powder X-ray diffraction (PXRD) unravels that the dual-ion removal capability is attributed to a novel reversible electrochemical driven phase segregation reaction mechanism between NaBi3O4Cl2 and the in situ formed metallic Bi. The unique dual-ion storage capability demonstrated with the NaBi3O4Cl2 electrode indicates that exploring electrochemical reversible phase segregation electrode material holds great promise for advancing the BDI electrode for future desalination techniques and aqueous rechargeable battery systems.
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Affiliation(s)
- Wenfei Wei
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuezhen Feng
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ranhao Wang
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Renji Zheng
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dazhong Yang
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hong Chen
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
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