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Preparation of adsorptive nanoporous membrane using powder activated carbon: Isotherm and thermodynamic

Majid Peyravi

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 673-687 doi: 10.1007/s11705-019-1800-9

Abstract: Adsorptive polyethesulfone (PES) membranes were prepared by intercalation of powder activated carbonIntercalation of PAC within the PES scaffold changed the porosity and mean pore size of the aminated membraneA similar increment was obtained for the membrane flux, which was due to the synergistic effect of the

Keywords： amine functionality     nanoporous membrane     adsorption isotherm     thermodynamic parameters     landfill leachate    

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Removal of copper by modified chitosan adsorptive membrane

Xiaoshuai LIU, Zihong CHENG, Wei MA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 102-106 doi: 10.1007/s11705-009-0123-7

Abstract: In this study, a novel adsorptive membrane was prepared from chitosan as the functional polymer and someThe modified chitosan membrane was characterized by FTIR and its Water Swelling Ratio (WSR).The adsorption of copper ions on the adsorptive membrane was investigated in batch experiments.The results obtained from the experiments indicated that the membrane had a good adsorption capacity

Keywords： chitosan     adsorptive membrane     copper removal     environmental engineering     heavy metal     isotherm model    

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Fabrication of bimetallic Cu–Zn adsorbents with high dispersion by using confined space for gas adsorptive

Frontiers of Chemical Science and Engineering   Pages 1623-1631 doi: 10.1007/s11705-022-2202-y

Abstract: The bimetallic materials were employed for the adsorptive separation of propene and propane.

Keywords： bimetallic adsorbents     confined space     mesoporous silica     propene/propane separation    

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Functionalized activated carbon for the adsorptive removal of perchlorate from water solutions

Rovshan MAHMUDOV, Chinglung CHEN, Chin-Pao HUANG

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 194-208 doi: 10.1007/s11705-015-1517-3

Abstract: Two types of activated carbon, namely, Filtrasorb 400 and Nuchar SA, were functionalized by quaternary ammonium salts (quats), as to enhance perchlorate adsorption. Results showed that the adsorption of quats on Nuchar SA increased with increase in chain length (hydrophobicity) of quats. Filtrasorb 400, however, had limited uptake of long-chain quats such as dodecyltrimethylammonium and hexadecyltrimethylammoium (HDTMA). Results indicated that perchlorate removal by the functionalized activated carbon was directly related to the chain length of the modifying quats. Perchlorate removal by functionalized activated carbon increased with increase in chain length of the modifying quats and became less pH-dependent. Modified Nuchar SA had higher overall perchlorate removal capacity than the modified Filtrasorb F400, but was more strongly affected by pH than Filtrasorb 400. Activated carbon treated with HDTMA exhibited the best perchlorate removal capacity among all quats studied. Results indicated that tailoring the activated carbon surface with HDTMA rendered the activated carbon surface positively charged, which resulted in substantial increase in perchlorate removal compared to unfunctionalized activated carbons.

Keywords： perchlorate     activated carbon     removal     functionalization     quaternary ammonium salts    

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acrylamide with EDTA-intercalated layered double hydroxide for enhanced recovery of Cr(VI) and Congo red: Adsorptive

Jing Li, Haiqin Yu, Xue Zhang, Rixin Zhu, Liangguo Yan

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1229-x

Abstract: ) to the LDH-EDTA by a cross-linking method to yield a LDH-EDTA-AM composite; we then evaluated its adsorptive

Keywords： Chromate     Dye adsorption     Simultaneous removal     Cross-linking method     Amino functionalization    

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Engineering Dual Oxygen Simultaneously Modified Boron Nitride for Boosting Adsorptive Desulfurization Article

罗静, 魏延臣, 巢艳红, 王超, 李宏平, 熊君, 华明清, 李华明, 朱文帅

Engineering 2022, Volume 14, Issue 7,   Pages 86-93 doi: 10.1016/j.eng.2020.08.030

Abstract: of interactions between the oxygen atoms and the adsorbate, however, is still ambiguous on improving adsorptiveresults indicated that the dual oxygen modified BN (BN–2O) exhibited an impressively increased adsorptiveselectively adsorb DBT from the aromatic-rich fuel, thereafter leading to an impressive prospect for the adsorptiveThe adsorptive result was in good accordance with Freundlich and pseudo-second-order adsorption kineticsdesigning of a polymer-based strategy could be also extended to other heteroatom doping systems to enhance adsorptive

Keywords： Polymer-based synthetic strategy     Interior substitution BN     Oxygen doping     Adsorptive desulfurization    

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Utilization of aluminum hydroxide waste generated in fluoride adsorption and coagulation processes for adsorptive

Jiawei JU,Ruiping LIU,Zan HE,Huijuan LIU,Xiwang ZHANG,Jiuhui QU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 467-476 doi: 10.1007/s11783-015-0809-7

Abstract: Although Al-based coagulation and adsorption processes have been proved highly efficient for fluoride (F) removal, the two processes both generate large amount of Al(OH) solid waste containing F (Al(OH) -F). This study aimed to investigate the feasibility of utilizing Al(OH) -F generated in Al(OH) adsorption (Al(OH) -F ) and coagulation (Al(OH) -F ) for the adsorption of cadmium ion (Cd(II)). The adsorption capacity of Al(OH) -F and Al(OH) -F for Cd(II) was similar as that of pristine aluminum hydroxide (Al(OH) ), being of 24.39 and 19.90 mg·g , respectively. The adsorption of Cd(II) onto Al(OH) -F and Al(OH) -F was identified to be dominated by ion-exchange with sodium ion (Na ) or hydrogen ion (H ), surface microprecitation, and electrostatic attraction. The maximum concentration of the leached fluoride from Al(OH) -F and Al(OH) -F is below the Chinese Class-I Industrial Wastewater Discharge Standard for fluoride (<10 mg·L ). This study demonstrates that the Al(OH) solid wastes generated in fluoride removal process could be potentially utilized as a adsorbent for Cd(II) removal.

Keywords： Al(OH)3     fluoride     cadmium     adsorption     reclamation     sequential extraction    

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Membrane fouling control by ultrasound in an anaerobic membrane bioreactor

SUI Pengzhe, WEN Xianghua, HUANG Xia

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 362-367 doi: 10.1007/s11783-007-0062-9

Abstract: In this study, ultrasound was used to control the membrane fouling online in an anaerobic membrane bioreactorThe experimental results indicated that when the crossflow velocity was more than 1.0 m/s, membrane foulingWhen ultrasound was applied, an ultrasonic power range of 60–150 W was suitable for the membrane foulingThe experimental results showed that the membrane fouling was controlled so well that membrane filtration

Keywords： membrane filtration     filtration resistance     different     feasible ultrasonic     anaerobic membrane    

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Novel membrane separation technologies and membrane processes

Yanying Wei, Gongping Liu, Jianquan Luo, Libo Li, Zhi Xu

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 717-719 doi: 10.1007/s11705-021-2053-y

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A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1729-6

Abstract:

● Fundamentals of membrane fouling are comprehensively reviewed.

Keywords： Membrane fouling     Thermodynamic mechanism     XDLVO theory     Flory-Huggins theory     Fouling migration    

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A review on membrane distillation in process engineering: design and exergy equations, materials and

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 592-613 doi: 10.1007/s11705-021-2105-3

Abstract: Further advances in the field of desalination can be provided by innovative processes such as membraneenhanced research activities and allowed a deeper understanding of mass and heat transport phenomena, membranewetting, polarization phenomena and have encouraged the use of materials particularly suitable for membraneThis work summarizes recent developments in the field of membrane distillation, studies for module lengthoptimization, commercial membrane modules developed, recent patents and advancement of membrane material

Keywords： membrane distillation     recent developments     heat and mass transfer     wetting     membrane material    

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Pilot plants of membrane technology in industry: Challenges and key learnings

Colin A. Scholes

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 305-316 doi: 10.1007/s11705-019-1860-x

Abstract: Membrane technology holds great potential in gas separation applications, especially carbon dioxide captureTo achieve this potential, the outputs from global research endeavours into membrane technologies mustbe trialled in industrial processes, which requires membrane-based pilot plants.These pilot plants are critical to the commercialization of membrane technology, be it as gas separationHere, the author reports on his experience of operating membrane-based pilot plants for gas separation

Keywords： membrane gas separation     membrane contactors     carbon capture     pilot plants     key learnings    

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Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 634-660 doi: 10.1007/s11705-021-2107-1

Abstract: In particular, membrane bioreactor (MBR) technology demonstrated high removal efficiency toward organicmicrofiltration) into the MBR units (hybrid MBRs) or the MBR as a pretreatment step and integrating other membraneprocesses as subsequent secondary purification step (integrated MBR-membrane systems).Then, an in-depth analysis was provided into the recent development of hybrid MBR and integrated MBR-membraneknowledge gaps in the field, highlighting the potential contribution of hybrid MBRs and integrated MBR-membrane

Keywords： membrane technology     membrane bioreactor     hospital wastewater     hybrid MBR     integrated MBR-membrane system    

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Highly hydrophobic oil−water separation membrane: reutilization of waste reverse osmosis membrane

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1606-1615 doi: 10.1007/s11705-022-2200-0

Abstract: In this work, the base nonwoven layer of the wasted reverse osmosis membrane was successfully modifiedinto the hydrophobic membrane via surface deposition strategy including TiO2 and 1H,1H,2HThe optimally modified membrane displayed good hydrophobicity with a contact angle of 135.2° ± 0.3°,This work might provide a new avenue for recycling the wasted reverse osmosis membrane used in oily wastewater

Keywords： oil–water separation     wasted reverse osmosis membrane     hydrophobic modification    

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Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobicceramic membrane bioreactor

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1131-6

Abstract: itemcontent>

The existence of three-phase separator aggravated membrane

Keywords： Anaerobic membrane bioreactor     Three-phase separator     Membrane fouling     Methane leakage     Sludge property    

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Title Author Date Type Operation

Preparation of adsorptive nanoporous membrane using powder activated carbon: Isotherm and thermodynamic

Majid Peyravi

Journal Article

Removal of copper by modified chitosan adsorptive membrane

Xiaoshuai LIU, Zihong CHENG, Wei MA

Journal Article

Fabrication of bimetallic Cu–Zn adsorbents with high dispersion by using confined space for gas adsorptive

Journal Article

Functionalized activated carbon for the adsorptive removal of perchlorate from water solutions

Rovshan MAHMUDOV, Chinglung CHEN, Chin-Pao HUANG

Journal Article

acrylamide with EDTA-intercalated layered double hydroxide for enhanced recovery of Cr(VI) and Congo red: Adsorptive

Jing Li, Haiqin Yu, Xue Zhang, Rixin Zhu, Liangguo Yan

Journal Article

Engineering Dual Oxygen Simultaneously Modified Boron Nitride for Boosting Adsorptive Desulfurization

罗静, 魏延臣, 巢艳红, 王超, 李宏平, 熊君, 华明清, 李华明, 朱文帅

Journal Article

Utilization of aluminum hydroxide waste generated in fluoride adsorption and coagulation processes for adsorptive

Jiawei JU,Ruiping LIU,Zan HE,Huijuan LIU,Xiwang ZHANG,Jiuhui QU

Journal Article

Membrane fouling control by ultrasound in an anaerobic membrane bioreactor

SUI Pengzhe, WEN Xianghua, HUANG Xia

Journal Article

Novel membrane separation technologies and membrane processes

Yanying Wei, Gongping Liu, Jianquan Luo, Libo Li, Zhi Xu

Journal Article

A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

Journal Article

A review on membrane distillation in process engineering: design and exergy equations, materials and

Journal Article

Pilot plants of membrane technology in industry: Challenges and key learnings

Colin A. Scholes

Journal Article

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Journal Article

Highly hydrophobic oil−water separation membrane: reutilization of waste reverse osmosis membrane

Journal Article

Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobicceramic membrane bioreactor

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Journal Article