Results 31 to 40 of about 8,010 (187)

Effect of concentration polarization on permselectivity [PDF]

open access: yesPhysical Review E, 2014
In this paper, the variation of permselectivity in the course of concentration polarization is systematically analyzed for a three-layer membrane system consisting of a nonperfectly permselective ion exchange membrane, homogeneous or heterogeneous, flanked by two diffusion layers of a binary univalent electrolyte. For a heterogeneous membrane, an ionic
abu-Rjal, Ramadan   +4 more
openaire   +3 more sources

High-efficiency CO2 separation using hybrid LDH-polymer membranes

open access: yesNature Communications, 2021
Membrane-based gas separation exhibits many advantages over other conventional techniques but the construction of membranes with simultaneous high selectivity and permeability remains a major challenge.
Xiaozhi Xu   +7 more
doaj   +1 more source

Reverse Electrodialysis with saline waters and concentrated brines: a laboratory investigation towards technology scale-up [PDF]

open access: yes, 2015
The use of concentrated brines and brackish water as feed solutions in reverse electrodialysis represents a valuable alternative to the use of river/sea water, allowing the enhancement of power output through the increase of driving force and reduction ...
Brauns, E   +6 more
core   +1 more source

Characterization of Poly(Acrylic) Acid-Modified Heterogenous Anion Exchange Membranes with Improved Monovalent Permselectivity for RED

open access: yesMembranes, 2020
The performance of anion-exchange membranes (AEMs) in Reverse Electrodialysis is hampered by both presence of multivalent ions and fouling phenomena, thus leading to reduced net power density.
Ivan Merino-Garcia   +4 more
doaj   +1 more source

Membrane-Assisted Methanol Synthesis Processes and the Required Permselectivity

open access: yesMembranes, 2021
Water-selective membrane reactors are proposed in the literature to improve methanol yield for a standalone reactor. However, the methanol productivity is not a precise metric to show the system improvement since, with this approach, we do not consider ...
Homa Hamedi   +2 more
doaj   +1 more source

A new approach to immunoFET operation [PDF]

open access: yes, 1990
A new method is presented for the detection of an immunological reaction taking place in a membrane, which covers the gate area of an ISFET. By stepwise changing the electrolyte concentration of the sample solution, a transient diffusion of ions through ...
Bergveld, P.   +3 more
core   +2 more sources

Permselectivity limits of biomimetic desalination membranes [PDF]

open access: yesScience Advances, 2018
Biomimetic desalination membranes could achieve ultraselectivity for water over ions, but not over neutral solutes.
Jay R. Werber, Menachem Elimelech
openaire   +2 more sources

Polymer membranes for organic solvent nanofiltration: Recent progress, challenges and perspectives

open access: yesAdvanced Membranes, 2023
The development of polymer materials and polymer membrane fabrication techniques in recent years greatly elevates the importance and feasibility of organic solvent nanofiltration (OSN) technology, while challenges from different perspectives still hinder
Zhenggong Wang   +5 more
doaj   +1 more source

REAPOWER – USE OF DESALINATION BRINE FOR POWER PRODUCTION THROUGH REVERSE ELECTRODIALYSIS [PDF]

open access: yes, 2015
Salinity Gradient Power (SGP) represents a viable renewable energy source associated with the mixing of two solutions of different salinities. Reverse Electrodialysis (SGP-RE or RED) is a promising technology to exploit this energy source and directly ...
CIPOLLINA, Andrea   +5 more
core   +1 more source

The Preparation and Performance Study of Polyamide Film Based on PDA@MWCNTs/PVDF Porous Support Layer

open access: yesMolecules
It is urgent to develop a polyamide (PA) thin-film composite (TFC) membrane with a new method in this study by designing and constructing a new nanomaterial support layer instead of the conventional support layer.
Zhenzhen Xu   +5 more
doaj   +1 more source

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