1
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Guo X, Tang X, Zhang M, Ma X, Wang J, Liang H. New progress in the deep understanding of the biocake layer property: Combined effect of neglected protein secondary structure, morphology, and mechanism. WATER RESEARCH 2024; 250:121038. [PMID: 38157600 DOI: 10.1016/j.watres.2023.121038] [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: 09/28/2023] [Revised: 12/02/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
The application of magnetic fields (MFs) and magnetic particles (MPs) in water treatment has attracted widespread attention due to their stability, strong biological compatibility, and less chemical consumption. This study introduced MPs and MFs to GDM and probed their effects on filtration performance. Predeposited large MPs (P-large) and batch-added little MPs (B-little) intervened biocake layer development, forming more open and porous structures, they also reduced biomass secretion, resulting in flux increases of 13 % in P-large and 40 % in B-little than P-little, respectively. Besides, MFs controlled MPs distribution on the biocake layer, resulting in forming of more rough and open structures. A relatively lower magnetic field of 20 mT facilitated biomass secretion, while a higher magnetic field of 50 mT decreased biomass. Furthermore, applying magnetic fields decreased the ratios of α-helix and β-sheet, and increased random coil percentage. Thus, applying magnetic field mediation would contribute to the flux improvements in I-20 and I-50 by 29 % and 32 % relative to I-0. Economic analysis suggested introducing MPs and MFs to GDM was economically feasible, synergy of MPs and MFs had more economic advantages on the community scale and MPs-assisted GDM had significant economic advantages on both community and household scales. Future works should focus on developing new technologies for the recycling of MPs and membranes. This study provided new insight into the protein secondary structures associated with GDM performance and would encourage new sustainable MFs and MPs-assisted GDM technological developments.
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Affiliation(s)
- Xishou Guo
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, PR China
| | - Xiaobin Tang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, PR China.
| | - Meng Zhang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, PR China
| | - Xiaobin Ma
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, PR China
| | - Jinlong Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, PR China
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, PR China.
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2
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Zhen Y, Sun Z, Jia Z, Liu C, Zhu S, Li X, Wang W, Ma J. Facile preparation of α-MnO2 nanowires for assembling free-standing membrane with efficient Fenton-like catalytic activity. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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3
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Chen Y, Fan S, Chen J, Deng L, Xiao Z. Catalytic Membrane Nanoreactor with Cu-Ag x Bimetallic Nanoparticles Immobilized in Membrane Pores for Enhanced Catalytic Performance. ACS APPLIED MATERIALS & INTERFACES 2022; 14:9106-9115. [PMID: 35143180 DOI: 10.1021/acsami.1c22753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A catalytic membrane nanoreactor (CMNR) with Cu-Agx (where x is the millimolar concentration of AgNO3) bimetallic catalysts immobilized in membrane pores has been fabricated via coupling flowing synthesis and replacement reaction. Surface characterization by transmission electron microscopy (TEM) gives obvious evidence of the formation of Cu-Ag bimetallic core-shell nanostructures with Ag islands deposited on the Cu core metal. An apparent high shift phenomenon for the Cu element and a low shift phenomenon for the Ag element was determined by X-ray photoelectron spectroscopy (XPS), indicating a close interaction with the transfer of electron density from the Cu atom to the Ag atom. The hydrogenation catalysis of p-nitrophenol (p-NP) was tested to evaluate the catalytic performance. During the catalytic process, the Cu core acts as an electron-deficient site to adsorb and activate the -NO2 group for p-NP, and the Ag shell is beneficial for enhancing active H spilling to the Cu surface and then performing hydrogenation. A volcano-shaped apparent reaction rate constant can be achieved, which rises initially with the increasing Ag content and subsequently drops with a further increase in the Ag content. The highest value of 1071 min-1 can be achieved for CMNR immobilized with Cu-Ag2 owing to the suitable adsorption activation behavior and the best hydrogen spillover behavior.
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Affiliation(s)
- Yu Chen
- Sichuan University, No. 24 South Section 1, Yihuan Road, 610065 Chengdu, China
| | - Senqin Fan
- Sichuan University, No. 24 South Section 1, Yihuan Road, 610065 Chengdu, China
| | - Jiaojiao Chen
- Sichuan University, No. 24 South Section 1, Yihuan Road, 610065 Chengdu, China
| | - Lei Deng
- Sichuan University, No. 24 South Section 1, Yihuan Road, 610065 Chengdu, China
| | - Zeyi Xiao
- Sichuan University, No. 24 South Section 1, Yihuan Road, 610065 Chengdu, China
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4
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Wang A, Li X, Hou T, Lu Y, Zhou J, Zhang X, Yang B. A tree-grapes-like PTFE fibrous membrane with super-hydrophobic and durable performance for oil/water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119165] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Wang Y, Wang J, Li G, Geng X, Hu T, Liu F. Reversible filtration redox of methylene blue in dimethylsulfoxide by manganese oxide loaded carbonaceous nanofibrous membrane through Fenton-like oxidation. J Colloid Interface Sci 2021; 588:436-445. [PMID: 33429340 DOI: 10.1016/j.jcis.2020.12.106] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/22/2020] [Accepted: 12/27/2020] [Indexed: 11/26/2022]
Abstract
The reversible redox of methylene blue in organic solvents was highly attractive, yet was rarely reported. In this study, we realized the continuous filtration redox of methylene blue (MB) in dimethylsulfoxide (DMSO) through Fenton-like oxidization by using MnO2 loaded carbonaceous nanofibrous membrane (cPAN-MnO2). The carbonaceous nanofibrous membrane (cPAN) was fabricated through electrospun of polyacrylonitrile and subsequent carbonization. The obtained cPAN nanofibrous membrane showed excellent stability in polar DMSO. MnO2 can be readily coated on cPAN nanofibers through an in situ redox reaction between cPAN and potassium permanganate. The fabricated cPAN-MnO2 membrane exhibited instantaneous reduction property towards MB in DMSO during a gravity-driven continuous filtration process. Interestingly, MB reduction was initiated by a typical Fenton-like oxidization, where hydroxyl radicals were firstly generated from hydrogen peroxide catalyzed by MnO2 in DMSO. Then hydroxyl radicals attacked DMSO to further produce methyl radicals, which resulted in the reduction of MB. In addition, MB reduction process in DMSO was reversible. Our study provides a novel strategy for continuous redox of MB in polar organic solvent and might give new ideas for MB applications.
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Affiliation(s)
- Yang Wang
- School of Science, North University of China, Taiyuan 030051, PR China; Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China
| | - Jianqiang Wang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Guiliang Li
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xiaolan Geng
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China
| | - Tuoping Hu
- School of Science, North University of China, Taiyuan 030051, PR China.
| | - Fu Liu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
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6
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Wang Y, Wang J, Ding Y, Zhou S, Liu F. In situ generated micro-bubbles enhanced membrane antifouling for separation of oil-in-water emulsion. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.119005] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Yadav P, Ismail N, Essalhi M, Tysklind M, Athanassiadis D, Tavajohi N. Assessment of the environmental impact of polymeric membrane production. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118987] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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8
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Bagherzadeh M, Rabiee N, Fatahi Y, Dinarvand R. Zn-rich (GaN)1−x(ZnO)x: a biomedical friend? NEW J CHEM 2021. [DOI: 10.1039/d0nj06310j] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The synthesis of (GaN)1−x(ZnO)x with the assistance of high-gravity using a green approach for the first time, with the application of delivering pCRISPR.
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Affiliation(s)
| | - Navid Rabiee
- Department of Chemistry
- Sharif University of Technology
- Tehran
- Iran
| | - Yousef Fatahi
- Department of Pharmaceutical Nanotechnology
- Faculty of Pharmacy
- Tehran University of Medical Sciences
- Tehran 14155-6451
- Iran
| | - Rassoul Dinarvand
- Department of Pharmaceutical Nanotechnology
- Faculty of Pharmacy
- Tehran University of Medical Sciences
- Tehran 14155-6451
- Iran
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9
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Chen M, Wei L, Zhang W, Wang C, Xiao C. Fabrication and catalytic performance of a novel tubular PMIA/Ag@RGO nanocomposite nanofiber membrane. RSC Adv 2021; 11:22287-22296. [PMID: 35480820 PMCID: PMC9034193 DOI: 10.1039/d1ra03707b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/09/2021] [Indexed: 11/21/2022] Open
Abstract
A novel tubular PMIA/Ag@RGO composite nanofiber membrane, which could be used in continuous catalysis process was fabricated via a facile and effective method.
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Affiliation(s)
- Mingxing Chen
- School of Textile and Garment
- Hebei Province Technology Innovation Center of Textile and Garment
- Hebei Key Laboratory of Flexible Functional Materials
- Hebei University of Science and Technology
- Shijiazhuang
| | - Lianying Wei
- School of Textile and Garment
- Hebei Province Technology Innovation Center of Textile and Garment
- Hebei Key Laboratory of Flexible Functional Materials
- Hebei University of Science and Technology
- Shijiazhuang
| | - Wei Zhang
- School of Textile and Garment
- Hebei Province Technology Innovation Center of Textile and Garment
- Hebei Key Laboratory of Flexible Functional Materials
- Hebei University of Science and Technology
- Shijiazhuang
| | - Chun Wang
- School of Textiles and Fashion
- Shanghai University of Engineering Science
- Shanghai
- China
| | - Changfa Xiao
- School of Textiles and Fashion
- Shanghai University of Engineering Science
- Shanghai
- China
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10
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Superhydrophilic carbonaceous-silver nanofibrous membrane for complex oil/water separation and removal of heavy metal ions, organic dyes and bacteria. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118491] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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High-flux robust ceramic membranes functionally decorated with nano-catalyst for emerging micro-pollutant removal from water. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118281] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Geng X, Wang J, Ye J, Yang S, Han Q, Lin H, Liu F. Electrosprayed polydopamine membrane: Surface morphology, chemical stability and separation performance study. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116857] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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13
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Qing W, Liu F, Yao H, Sun S, Chen C, Zhang W. Functional catalytic membrane development: A review of catalyst coating techniques. Adv Colloid Interface Sci 2020; 282:102207. [PMID: 32688044 DOI: 10.1016/j.cis.2020.102207] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/02/2020] [Accepted: 07/04/2020] [Indexed: 12/18/2022]
Abstract
Catalytic membranes combine catalytic activity with conventional filtration membranes, thus enabling diverse attractive benefits into the conventional membrane filtration processes, such as easy catalyst reuse, antifouling, anti-microbial, and enhancing process efficiency. Up to date, tremendous progresses have been made on functional catalytic membrane preparation and applications, which significantly advances the competitiveness of membrane technologies in process industries. The present article provides a critical and holistic overview of the current state of knowledge on existing catalyst coating techniques for functional catalytic membrane development. Based on coating mechanisms, the techniques are generally categorized into physical and chemical surface coating routes. For each technique, we first introduce fundamental principle, followed by a critical discussion of their applications with representative case studies. Advantages and drawbacks are also emphasized for different surface coating technologies. Finally, future perspectives are highlighted to provide deep insights into their future developments.
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Affiliation(s)
- Weihua Qing
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States of America
| | - Fang Liu
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Hong Yao
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China.
| | - Shaobin Sun
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States of America
| | - Chen Chen
- Department of Municipal and Environmental Engineering, Qingdao University of Technology, Qingdao 266033, China
| | - Wen Zhang
- Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States of America
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14
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Zhao Y, Lu D, Xu C, Zhong J, Chen M, Xu S, Cao Y, Zhao Q, Yang M, Ma J. Synergistic oxidation - filtration process analysis of catalytic CuFe 2O 4 - Tailored ceramic membrane filtration via peroxymonosulfate activation for humic acid treatment. WATER RESEARCH 2020; 171:115387. [PMID: 31877477 DOI: 10.1016/j.watres.2019.115387] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 05/09/2023]
Abstract
This work synthesized catalytic CuFe2O4 tailored ceramic membrane (CuFeCM), and systematically investigated the intercorrelated oxidation - filtration mechanism of peroxymonosulfate (PMS)/CuFeCM catalytic filtration for treating humic acid (HA). PMS/CuFeCM filtration exhibited enhanced HA removal efficiency while reduced the irreversible fouling resistance as compared with the conventional CM filtration. Results from HA characterizations showed that PMS/CuFeCM catalytic filtration oxidized HA into conjugated structures of smaller molecular weight. The unsaturated bonds further caused the re-agglomeration of HA, hence enhancing the size exclusion of CuFeCM. Meanwhile, oxidized HA particles with changing physicochemical properties reduced the total attractive interaction energy between CuFeCM and HA, mainly attributed to the reduced acid-base interaction energy according to the Extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) analysis. The changing of HA properties and HA-CuFeCM physicochemical interactions rendered more re-agglomerated HA particles retained above membrane with less attachment, which induced decreasing irreversible fouling resistance and facilitated easier external fouling removal by hydraulic cleaning. Overall, the PMS/CuFeCM configuration demonstrated in this study could provide a new insight into the synergistic oxidation - filtration interaction mechanism of hybrid catalytic ceramic membrane filtration process.
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Affiliation(s)
- Yumeng Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Dongwei Lu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Chengbiao Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jinying Zhong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Mansheng Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Shu Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Ying Cao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Qi Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Mo Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
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15
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Lv Y, Ding Y, Wang J, He B, Yang S, Pan K, Liu F. Carbonaceous microsphere/nanofiber composite superhydrophilic membrane with enhanced anti-adhesion property towards oil and anionic surfactant: Membrane fabrication and applications. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116189] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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17
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He B, Ding Y, Wang J, Yao Z, Qing W, Zhang Y, Liu F, Tang CY. Sustaining fouling resistant membranes: Membrane fabrication, characterization and mechanism understanding of demulsification and fouling-resistance. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.03.045] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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The Application of Halloysite Nanotubes/Fe3O4 Composites Nanoparticles in Polyvinylidene Fluoride Membranes for Dye Solution Removal. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01125-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Gravity-driven catalytic nanofibrous membrane with microsphere and nanofiber coordinated structure for ultrafast continuous reduction of 4-nitrophenol. J Colloid Interface Sci 2019; 538:108-115. [PMID: 30502531 DOI: 10.1016/j.jcis.2018.11.086] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/21/2018] [Accepted: 11/22/2018] [Indexed: 01/27/2023]
Abstract
Silver loaded nanofibrous membrane with high catalytic performance for 4-nitrophenol under continuous gravity-driven filtration was developed in this study. A polydopamine (PDA) microsphere and nanofiber coordinated composite structure was fabricated through an in situ PDA synthesis to achieve a high catalyst loading and controllable residence time of 4-nitrophenol. The incorporated PDA microspheres played an important role for the enhancement of catalytic performance due to the increased surface area (23% increase compared with PAN and PAN-PDAs-Ag) and reduced membrane porosity. Silver loading amount and the residence time of 4-nitrophenol was increased by more than 108% (from 1.2 wt% to 2.5 wt%) and 45% (from 0.79 s to 1.15 s) when comparing with PAN-PDAc-Ag and PAN-PDAs-Ag nanofibrous membrane. The conversion rate of 4-nitrophenol in a gravity-driven filtration process was as high as 97% when PAN-PDAs-Ag nanofibrous membrane was used, which was much higher than the PAN-PDAc-Ag membrane (80%). In addition, the PAN-PDAs-Ag nanofibrous membrane exhibited excellent recycle performance, the conversion rate was maintained as high as 93% after five times of reuse. The microsphere and nanofiber coordinated structure with enhanced surface area and controllable residence time of contaminants proposed in this study might advance the real applications of electrospun nanofibrous membrane for catalytic removal of contaminants.
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20
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Fast polydopamine coating on reverse osmosis membrane: Process investigation and membrane performance study. J Colloid Interface Sci 2019; 535:239-244. [DOI: 10.1016/j.jcis.2018.10.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 10/05/2018] [Accepted: 10/05/2018] [Indexed: 11/22/2022]
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21
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Zhao Y, Lu D, Cao Y, Luo S, Zhao Q, Yang M, Xu C, Ma J. Interaction Analysis between Gravity-Driven Ceramic Membrane and Smaller Organic Matter: Implications for Retention and Fouling Mechanism in Ultralow Pressure-Driven Filtration System. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:13718-13727. [PMID: 30452244 DOI: 10.1021/acs.est.8b03618] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gravity-driven membranes (GDM) generally achieve high retention performance in filtration of organic matter with a smaller size than the membrane pore, yet the in-depth mechanism remains unclear. Thorough analysis of the retention mechanism is crucial for optimizing GDM properties and improving GDM filtration performance. The performance and interaction mechanism of gravity-driven ceramic membrane (GDCM) filtrating smaller organic matter (SOM) were systematically studied. Rejection rate grew noticeably for like-charged foulant, whereas it only grew slightly for opposite-charged foulant as operation height decreased. Flux declined more seriously at lower operation height, probably due to heavier cake fouling caused by the rejected foulant. Interactions of ceramic membrane-SOM were analyzed through extended Derjaguin-Landau-Verwey-Overbeek theory (XDLVO) and hydrodynamic permeation drag (PD). Among van der Waals (LW), acid-base (AB), and electrostatic (EL) forces in XDLVO, EL played a significant role on GDCM filtrating SOM, and altering membrane electrostatic property could greatly influence SOM filtration. Furthermore, the rising PD force largely weakened the EL dominant zone with operation height increasing, while barely influencing the LW and AB dominant zones. Therefore, the weakened EL-dominant repulsive zone caused less rejection of like-charged foulant with operation height increasing. Fe2O3- and MnO2-modified membranes further validated the comprehensive influence of LW, AB, EL, and PD interactions on GDCM filtration. The possible "trade-off" of pore blocking-cake fouling with operation height decreasing demonstrated potential enhancement for both rejection and antifouling performance by electrically modified membrane under ultralow pressure. This study provides insight on membrane selection/preparation/modification and performance control of ultralow pressure-driven filtration.
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Affiliation(s)
- Yumeng Zhao
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
| | - Dongwei Lu
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
| | - Ying Cao
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
| | - Shuangjiang Luo
- Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Qi Zhao
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
| | - Mo Yang
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
| | - Chengbiao Xu
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China
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22
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Wang Z, Ji S, Zhang J, He F, Xu Z, Peng S, Li Y. Dual functional membrane with multiple hierarchical structures (MHS) for simultaneous and high-efficiency removal of dye and nano-sized oil droplets in water under high flux. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.07.036] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Luo X, Liang H, Qu F, Ding A, Cheng X, Tang CY, Li G. Free-standing hierarchical α-MnO 2@CuO membrane for catalytic filtration degradation of organic pollutants. CHEMOSPHERE 2018; 200:237-247. [PMID: 29494904 DOI: 10.1016/j.chemosphere.2018.02.113] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 02/10/2018] [Accepted: 02/19/2018] [Indexed: 05/09/2023]
Abstract
Catalytic membrane, due to its compact reactor assembling, high catalytic performance as well as low energy consumption, has proved to be more attractive for wastewater treatment. In this work, a free-standing α-MnO2@CuO membrane with hierarchical nanostructures was prepared and evaluated as the catalytic membrane to generate radicals from peroxymonosulfate (PMS) for the oxidative degradation of organic dyes in aqueous solution. Benefiting from the high mass transport efficiency and the hierarchical nanostructures, a superior catalytic activity of the membrane was observed for organic dyes degradation. As a typical organic dye, more than 99% of methylene blue (MB) was degraded within 0.23 s using dead-end filtration cell. The effects of flow rate, PMS concentration and buffer solution on MB degradation were further investigated. Besides MB, the catalytic membrane also showed excellent performance for the removal of other dyes, such as congo red, methyl orange, rhodamine B, acid chrome blue K and malachite green. Moreover, the mechanism study indicated that OH and SO4- generated from the interaction between PMS and Mn/Cu species with different oxidation states mainly accounted for the dyes degradation. The catalytic filtration process using α-MnO2@CuO catalytic membrane could provide a novel method for wastewater purification with high efficiency and low energy consumption.
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Affiliation(s)
- Xinsheng Luo
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China.
| | - Fangshu Qu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China
| | - An Ding
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China
| | - Xiaoxiang Cheng
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Guibai Li
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China
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24
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Guo H, Yao Z, Yang Z, Ma X, Wang J, Tang CY. A One-Step Rapid Assembly of Thin Film Coating Using Green Coordination Complexes for Enhanced Removal of Trace Organic Contaminants by Membranes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:12638-12643. [PMID: 28994593 DOI: 10.1021/acs.est.7b03478] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report a fast, simple, and green coating method using the coordination complex of tannic acid (TA) and ferric ion (Fe3+) to enhance the removal of trace organic contaminants (TrOCs) by polyamide membranes. The entire coating process can be completed in less than 2 min; quartz crystal microbalance characterization revealed that a TA-Fe thin film formed in merely 10-20 s. Coating this TA-Fe thin film on a commercial nanofiltration membrane (NF270) reduced its effective pore size from 0.44 to 0.40 nm. The TA-Fe-coated NF270 showed significantly increased rejection of both NaCl and trace organic contaminants. In comparison with the more-time-consuming polydopamine coating (e.g., 0.5 h), the TA-Fe coating presented greater resistance to TrOC permeation (i.e., lower permeability of TrOCs). The advantages of the fast coating process, greatly improved rejection performance, and use of green accessible materials make TA-Fe a highly promising coating material for large-scale applications.
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Affiliation(s)
- Hao Guo
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong
| | - Zhikan Yao
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong
| | - Zhe Yang
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong
| | - Xiaohua Ma
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Chemical Engineering Research Center, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, P. R. China
| | - Jianqiang Wang
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong
- Polymer and Composite Division, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences , Ningbo 315201, P. R. China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong
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A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation. Sci Rep 2017; 7:2334. [PMID: 28539615 PMCID: PMC5443768 DOI: 10.1038/s41598-017-02452-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 04/10/2017] [Indexed: 11/25/2022] Open
Abstract
We report a facile method for preparing silver-loaded membranes for point-of-use disinfection and disaster relief applications. A bio-inspired material, polydopamine, was coated onto a highly porous nanofibrous polyacrylonitrile substrate. We then take advantage of the redox properties of polydopamine to form silver nanoparticles in situ. These nanoparticles were uniformly distributed on the surface of nanofibers with no apparent agglomeration at a silver loading up to 4.36 wt.% (cPAN-Ag1.5). The silver-incorporated membrane cPAN-Ag1.5 achieved a high pure water flux of 130 Lm−2 h−1 at 10-cm water head, demonstrating the feasibility of energy-efficient gravity-driven filtration and eliminating the need for electrical power. The strong anti-bacterial activity and high physical rejection of the membrane led to an excellent disinfection power, with no viable bacterial cells detected in its permeate water. The membrane exhibited >7 log reduction for E. coli and >6 log reduction for B. subtilis. The strategy reported here provides an efficient and green route to synthesize point-of-use membranes. Combining their excellent permeability and disinfection effectiveness, these membranes offer an ideal solution to water supply in disaster-affected areas.
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