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Preparation and characterization of asymmetric ultrafiltration membrane for effective recovery of proteases

Nora’aini ALI, Fadhilati HASSAN, Sofiah HAMZAH

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 184-191 doi: 10.1007/s11705-012-1288-z

Abstract: Asymmetric polysulfone and polyethersulfone ultrafiltration (PSf-UF and PES-UF) membranes with three

Keywords： membrane     ultrafiltration     proteases     surimi wash water    

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Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 301-310 doi: 10.1007/s11705-012-1204-6

Abstract: High performance polyvinylidene fluoride (PVDF) flat sheet ultrafiltration (UF) membranes have been prepared

Keywords： polyvinylidene fluoride     perfluorosulfonic acid     polyethylene glycol     flat sheet membrane     ultrafiltration    

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On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 490-498 doi: 10.1007/s11705-016-1600-4

Abstract: Membrane fouling has been investigated by using a polysulfone ultrafiltration membrane with the molecularThrough regression analysis, the fouling of polysulfone ultrafiltration membrane could be fitted very

Keywords： membrane fouling     ultrafiltration membrane     coal gasification wastewater     rejection coefficient    

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Effects of a dynamic membrane formed with polyethylene glycol on the ultrafiltration of natural organic

Boksoon KWON, Noeon PARK, Jaeweon CHO,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 172-182 doi: 10.1007/s11783-010-0002-y

Abstract: natural organic matters (NOM), Dongbok Lake NOM (DLNOM) and Suwannee River NOM (SRNOM) were used in the ultrafiltrationTo evaluate the effects of the DM with PEG on ultrafiltration, various transport experiments were conductedformed with PEG can be summarized as follows: (1) PEG interferes with NOM transmission through the ultrafiltration

Keywords： dynamic membrane     natural organic matters     ultrafiltration membrane performance     effective PSD     effective    

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Preparation of polysulfone-based block copolymer ultrafiltration membranes by selective swelling and

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 745-754 doi: 10.1007/s11705-021-2038-x

Abstract: polysulfone-b-poly(ethylene glycol) is an emerging strategy to prepare new types of polysulfone ultrafiltrationHerein, we prepared nanoporous polysulfone-b-poly(ethylene glycol) ultrafiltration membranes byselective swelling and further promoted their porosity and ultrafiltration performances by using CaCO

Keywords： block copolymers     selective swelling     ultrafiltration     CaCO3 nanoparticles     sacrificial nanofillers    

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Experimental studies on extraction of cobalt ions from dilute aqueous solutions by using complexation-ultrafiltration

Jianxian ZENG, Junfeng LIU, Niandong HUANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 360-366 doi: 10.1007/s11705-009-0269-3

Abstract: The extraction of cobalt ions from dilute aqueous solutions was investigated by ultrafiltration withPolysulfone and polyethersulfone hollow fiber ultrafiltration membranes were employed in this process
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Electro-assisted CNTs/ceramic flat sheet ultrafiltration membrane for enhanced antifouling and separation

Shuo Wei, Lei Du, Shuo Chen, Hongtao Yu, Xie Quan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1303-4

Abstract: Ultrafiltration is employed as an important process for water treatment and reuse, which is of greatIn this work, a CNTs/ceramic flat sheet ultrafiltration membrane coupled with electro-assistance was

Keywords： Ultrafiltration     Electro-assistance     CNTs     Membrane fouling mitigation    

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Comparison of membrane fouling in ultrafiltration of down-flow and up-flow biological activated carbon

Lu Ao, Wenjun Liu, Yang Qiao, Cuiping Li, Xiaomao Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1046-7

Abstract:

The UF membrane fouling by down- and up-flow BAC effluents were compared.

Up-flow BAC effluent fouled the membrane faster than down-flow BAC effluent.

The combined effects dominated irreversible fouling.

The extent of fouling exacerbated by inorganic particles was higher.

Keywords： Ultrafiltration     Membrane fouling     Down-flow biological activated carbon     Up-flow biological activated carbon    

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PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0980-0

Abstract: Polyvinylidene fluoride grafted with poly(ethylene glycol) methyl ether methacrylate (PVDF-g-PEGMA) was synthesized using atomic transfer radical polymerization (ATRP) at different reaction times (9 h, 19 h, and 29 h). The corresponding conversion rates were 10%, 20% and 30%, respectively. PVDF was blended with the copolymer mixture containing PVDF-g-PEGMA, solvent and residual PEGMA under different reaction times. In this study, we explored the effect of the copolymer mixture additives with different synthesis times on cast membrane performance. Increasing the reaction time of PVDF-g-PEGMA causes more PVDF-g-PEGMA and less residual PEGMA to be found in the casting solution. Incremental PVDF-g-PEGMA can dramatically increase the viscosity of the casting solution. An overly high viscosity led to a delayed phase inversion, thus hindering PEGMA segments in PVDF-g-PEGMA from migrating to the membrane surface. However, more residual PEGMA contributed to helping more PEGMA segments migrate to the membrane surface. The pure water fluxes of the blended membrane with reaction times of 9 h, 19 h, and 29 h are 5445 L·m ·h , 1068 L·m ·h and 1179 L·m ·h , respectively, at 0.07 MPa. Delayed phase inversion can form smaller surface pore size distributions, thus decreasing the water flux for the membranes with PVDF-g-PEGMA at 19 h and 29 h. Therefore, we can control the membrane pore size distribution by decreasing the reaction time of PVDF-g-PEGMA to obtain a better flux performance. The membrane with PVDF-g-PEGMA at 19 h exhibits the best foulant rejection and cleaning recovery due to its narrow pore size distribution and high surface oxygen content.

Keywords： Polyvinylidene fluoride ultrafiltration membrane     Amphiphilic copolymer     Blended modification     High flux    

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weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1484-1502 doi: 10.1007/s11705-023-2331-y

Abstract: Rheological and ultrasonic separation kinetic measurements were also carried out to develop an ultrafiltration

Keywords： polysulfone     blend modification     ultrafiltration membrane     formation hydrodynamics     poly(ethylene-co-vinyl    

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Co-application of energy uncoupling and ultrafiltration in sludge treatment: Evaluations of sludge reduction

An Ding, Yingxue Zhao, Zhongsen Yan, Langming Bai, Haiyang Yang, Heng Liang, Guibai Li, Nanqi Ren

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1238-9

Abstract: The purpose of this study was to determine the effect of using a low-pressure ultrafiltration membrane

Keywords： Sludge reduction     Energy uncoupling     Ultrafiltration membrane     Membrane fouling    

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Preparation and antibacterial property of Polyethersulfone Hybrid Ultrafiltration Membrane Containing

Zhu Junyong,Wang Qiongke,Xu Xin,Liu Chuochuo,Liu Jindun,Zhang Yatao

Strategic Study of CAE 2014, Volume 16, Issue 7,   Pages 23-29

Abstract: The immobilized lysozyme of GO used as the addictive was blended with PES to prepare hybrid ultrafiltration

Keywords： Graphene oxide     Lysozyme     Polyethersulfone Ultrafiltration membrane     Antibacterial property    

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Effect of protein on PVDF ultrafiltration membrane fouling behavior under different pH conditions: interface

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0855-9

Abstract: further determine the fouling behavior of bovine serum albumin (BSA) on different hydrophilic PVDF ultrafiltration

Keywords： PVDF membrane     Membrane fouling     Adhesion force     Protein     Interfacial free energy    

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Fouling mechanisms in the early stage of an enhanced coagulation-ultrafiltration process

Haiqing CHANG,Baicang LIU,Wanshen LUO,Guibai LI

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 73-83 doi: 10.1007/s11783-014-0692-7

Abstract: We investigated the fouling performances of ultrafiltration (UF) membrane for treating in-line coagulated

Keywords： coagulation-UF     trans-membrane pressure (TMP)     permeability     membrane fouling resistance     scanning electron microscopy (SEM)    

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Removal of Ni(II) ions from wastewater by micellar enhanced ultrafiltration using mixed surfactants

Amar D. Vibhandik, Kumudini V. Marathe

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 79-86 doi: 10.1007/s11705-014-1407-0

Abstract: Ni(II) ions were removed from aqueous waste using micellar enhanced ultrafiltration (MEUF) with a mixture

Keywords： MEUF     Ni (II) ions     membrane resistance     concentration polarization     mixed surfactants    

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Title Author Date Type Operation

Preparation and characterization of asymmetric ultrafiltration membrane for effective recovery of proteases

Nora’aini ALI, Fadhilati HASSAN, Sofiah HAMZAH

Journal Article

Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Journal Article

On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

Journal Article

Effects of a dynamic membrane formed with polyethylene glycol on the ultrafiltration of natural organic

Boksoon KWON, Noeon PARK, Jaeweon CHO,

Journal Article

Preparation of polysulfone-based block copolymer ultrafiltration membranes by selective swelling and

Journal Article

Experimental studies on extraction of cobalt ions from dilute aqueous solutions by using complexation-ultrafiltration

Jianxian ZENG, Junfeng LIU, Niandong HUANG,

Journal Article

Electro-assisted CNTs/ceramic flat sheet ultrafiltration membrane for enhanced antifouling and separation

Shuo Wei, Lei Du, Shuo Chen, Hongtao Yu, Xie Quan

Journal Article

Comparison of membrane fouling in ultrafiltration of down-flow and up-flow biological activated carbon

Lu Ao, Wenjun Liu, Yang Qiao, Cuiping Li, Xiaomao Wang

Journal Article

PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Journal Article

weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltration

Journal Article

Co-application of energy uncoupling and ultrafiltration in sludge treatment: Evaluations of sludge reduction

An Ding, Yingxue Zhao, Zhongsen Yan, Langming Bai, Haiyang Yang, Heng Liang, Guibai Li, Nanqi Ren

Journal Article

Preparation and antibacterial property of Polyethersulfone Hybrid Ultrafiltration Membrane Containing

Zhu Junyong,Wang Qiongke,Xu Xin,Liu Chuochuo,Liu Jindun,Zhang Yatao

Journal Article

Effect of protein on PVDF ultrafiltration membrane fouling behavior under different pH conditions: interface

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Journal Article

Fouling mechanisms in the early stage of an enhanced coagulation-ultrafiltration process

Haiqing CHANG,Baicang LIU,Wanshen LUO,Guibai LI

Journal Article

Removal of Ni(II) ions from wastewater by micellar enhanced ultrafiltration using mixed surfactants

Amar D. Vibhandik, Kumudini V. Marathe

Journal Article