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Polyvinylamine-Based Facilitated Transport Membranes for Post-Combustion CO2 Capture: Challenges Perspective

Xuezhong He

Engineering 2021, Volume 7, Issue 1,   Pages 124-131 doi: 10.1016/j.eng.2020.11.001

Abstract:

Carbon dioxide (CO2) capture by gas-separation membranes has become increasingly attractivePolyvinylamine (PVAm)-based facilitated transport (FT) membranes were developed in the last decade forThis work discusses the challenges of applying PVAm-based FT membranes from materials to processes forExperiences learned from a pilot demonstration system can be used to guide the design of other membranes

Keywords： Facilitated transport membranes     Flue gas     Hollow fiber     CO2 capture     Process simulation    

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Molecular Simulations of Water Transport Resistance in Polyamide RO Membranes: Interfacial and Interior Article

Yang Song, Mingjie Wei, Fang Xu, Yong Wang

Engineering 2020, Volume 6, Issue 5,   Pages 577-584 doi: 10.1016/j.eng.2020.03.008

Abstract:

Understanding the transport resistance of water molecules in polyamide (PA) reverse osmosis (RO) membranesmolecular level is of great importance in guiding the design, preparation, and applications of these membranesIn this work, we use molecular simulation to calculate the total transport resistance by dividing itHowever, for real-world RO membranes with a 200 nm PA layer, interfacial resistance plays a minor roleresistance of RO membranes, as this method involves simply multiplying the total transport resistance

Keywords： Transport resistance     Reverse osmosis     Non-equilibrium molecular dynamics     Water molecule affinity     Modeling    

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Simultaneous Feammox and anammox process facilitated by activated carbon as an electron shuttle for autotrophic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1498-z

Abstract:

• The autotrophic nitrogen removal combining Feammox and Anammox was achieved.

Keywords： Feammox     Anammox     Extracellular electron transfer     Electron shuttle     Activated carbon    

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Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1625-0

Abstract:

● IEM ion/ion selectivities of charge, valence, & specific ion are critically assessed.

Keywords： Ion-exchange membranes     Selectivity     Separations    

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A ternary mechanism for the facilitated transfer of metal ions onto metal–organic frameworks: implications

Frontiers of Chemical Science and Engineering   Pages 1632-1642 doi: 10.1007/s11705-022-2187-6

Abstract: Although metal–organic frameworks offer a new platform for developing versatile sorption materials, yet coordinating the functionality, structure and component of these materials remains a great challenge. It depends on a comprehensive knowledge of a “real sorption mechanism”. Herein, a ternary mechanism for U(VI) uptake in metal–organic frameworks was reported. Analogous MIL-100s (Al, Fe, Cr) were prepared and studied for their ability to sequestrate U(VI) from aqueous solutions. As a result, MIL-100(Al) performed the best among the tested materials, and MIL-100(Cr) performed the worst. The nuclear magnetic resonance technique combined with energy-dispersive X-ray spectroscopy and zeta potential measurement reveal that U(VI) uptake in the three metal–organic frameworks involves different mechanisms. Specifically, hydrated uranyl ions form outer-sphere complexes in the surface of MIL-100s (Al, Fe) by exchanging with hydrogen ions of terminal hydroxyl groups (Al-OH2, Fe-OH2), and/or, hydrated uranyl ions are bound directly to Al(III) center in MIL-100(Al) through a strong inner-sphere coordination. For MIL-100(Cr), however, the U(VI) uptake is attributed to electrostatic attraction. Besides, the sorption mechanism is also pH and ionic strength dependent. The present study suggests that changing metal center of metal–organic frameworks and sorption conditions alters sorption mechanism, which helps to construct effective metal–organic frameworks-based sorbents for water purification.

Keywords： U(VI)     metal–organic frameworks     adsorption mechanism     metal node    

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Imprinted membranes for sustainable separation processes

Laura Donato, Enrico Drioli

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 775-792 doi: 10.1007/s11705-020-1991-0

Abstract: perspective, a relevant input was given by the membrane-based technology and the production of imprinted membranesFurthermore, the integration of imprinted membranes with traditional or membrane-based approaches isThis work discusses the concept and separation mechanisms of imprinted membranes.Finally, potential applications of imprinted membranes in hybrid processes are highlighted, and a look

Keywords： sustainable processes     membrane separation     molecular recognition     imprinted membranes     water treatment    

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Nucleic acid crystallization and X-ray crystallography facilitated by single selenium atom

Wen Zhang,Jack W. Szostak,Zhen Huang

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2,   Pages 196-202 doi: 10.1007/s11705-016-1565-3

Abstract: X-ray crystallography is a powerful strategy for 3-D structure determination of macromolecules, such as nucleic acids and protein-nucleic acid complexes. However, the crystallization and phase determination are the major bottle-neck problems in crystallography. Recently we have successfully developed synthesis and strategy of selenium-derivatized nucleic acids (SeNA) for nucleic acid crystallography. SeNA might not only provide the rational strategies to solve the phase determination problem, but also offer a potential strategy to explore crystallization solutions.

Keywords： selenium     DNA     RNA     nucleic acid     crystallization    

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Decontamination of Cr(VI) facilitated formation of persistent free radicals on rice husk derived biochar

Kaikai Zhang, Peng Sun, Yanrong Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1106-7

Abstract:

PFRs were produced on biochar during Cr(VI) decontamination.

PFRs formation on biochar was owing to the oxidization of phenolic-OH by Cr(VI).

Appearance of excessive oxidant led to the consumption of PFRs on biochar.

Biochar charred at high temperature possessed great performance to Cr(VI) removal.

Keywords： Biochar     Persistent free radicals     Phenolic hydroxyl groups     Cr(VI) reduction    

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The source and transport of bioaerosols in the air: A review

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1336-8

Abstract:

• Emission of microbe from local environments is a main source of bioaerosols.

Keywords： Bioaerosols     Diffusion     Source identification     Biogeography    

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Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1412-8

Abstract:

•The history of biological and artificial water channels is reviewed.

Keywords： Aquaporins     Artificial water channels     Biomimetic membranes     Chemical separation and water purification    

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Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1837-1865 doi: 10.1007/s11705-023-2347-3

Abstract: Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Keywords： Surface modification techniques    

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Recent progress of two-dimensional nanosheet membranes and composite membranes for separation applications

Wei Wang, Yanying Wei, Jiang Fan, Jiahao Cai, Zong Lu, Li Ding, Haihui Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 793-819 doi: 10.1007/s11705-020-2016-8

Abstract: interlayer nanochannel/sub-nanochannel between nanosheets or the pore size of nanosheets within 2D membranesenables 2D membranes to achieve promising molecular sieving performance.To date, many 2D membranes with high permeability and high selectivity have been reported, exhibiting, including membranes based on porous and non-porous 2D nanosheets for various separations.Separation mechanism of 2D membranes and their fabrication methods are also reviewed.

Keywords： membrane separation     2D membranes     2D materials     nanosheet    

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Intercontinental transport of air pollution

Lin ZHANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1,   Pages 20-29 doi: 10.1007/s11783-010-0014-7

Abstract: There is an increasing interest on the intercontinental transport of air pollution among the three mainObservations from ground sites, aircraft and satellites have demonstrated this intercontinental-scale transportNumerical models have been applied to understand the pathways of the transport and the impact of intercontinentalpollution transport.This paper reviews current observational evidence and modeling studies of intercontinental transport

Keywords： intercontinental transport     ozone     air pollution    

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Special issue on “Membranes and Water Treatment”

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 561-563 doi: 10.1007/s11705-021-2136-9

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Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 460-469 doi: 10.1007/s11705-019-1881-5

Abstract: Commercial gas separation membranes are required to have high gas permeability and selectivity, whileMixed matrix membranes (MMMs) have a composite structure that consists of polymers and fillers, therefore

Keywords： membranes     polymeric     mixed matrix     impurities    

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Title Author Date Type Operation

Polyvinylamine-Based Facilitated Transport Membranes for Post-Combustion CO2 Capture: Challenges

Xuezhong He

Journal Article

Molecular Simulations of Water Transport Resistance in Polyamide RO Membranes: Interfacial and Interior

Yang Song, Mingjie Wei, Fang Xu, Yong Wang

Journal Article

Simultaneous Feammox and anammox process facilitated by activated carbon as an electron shuttle for autotrophic

Journal Article

Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

Journal Article

A ternary mechanism for the facilitated transfer of metal ions onto metal–organic frameworks: implications

Journal Article

Imprinted membranes for sustainable separation processes

Laura Donato, Enrico Drioli

Journal Article

Nucleic acid crystallization and X-ray crystallography facilitated by single selenium atom

Wen Zhang,Jack W. Szostak,Zhen Huang

Journal Article

Decontamination of Cr(VI) facilitated formation of persistent free radicals on rice husk derived biochar

Kaikai Zhang, Peng Sun, Yanrong Zhang

Journal Article

The source and transport of bioaerosols in the air: A review

Journal Article

Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Journal Article

Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Journal Article

Recent progress of two-dimensional nanosheet membranes and composite membranes for separation applications

Wei Wang, Yanying Wei, Jiang Fan, Jiahao Cai, Zong Lu, Li Ding, Haihui Wang

Journal Article

Intercontinental transport of air pollution

Lin ZHANG,

Journal Article

Special issue on “Membranes and Water Treatment”

Journal Article

Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

Journal Article