Results 11 to 20 of about 3,938,556 (292)

Denitrification using immersed membrane bioreactors

open access: yes, 2008
Nitrate is practically ubiquitous in waters abstracted for municipal potable water production in Europe due to decades of intensive agricultural practice.
McAdam, Ewan J.
core   +7 more sources

Identifying Characteristic Frequencies in the Electrochemical Impedance of Ion-Exchange Membrane Systems. [PDF]

open access: yesMembranes (Basel), 2022
In this study, the characteristic frequencies of the electrochemical impedance of ion-exchange membrane systems constituted by the membrane and two diffusion boundary layers adjacent to the membrane were investigated.
Moya AA.
europepmc   +2 more sources

Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature

open access: yesMembranes, 2022
In this paper, a potassium chabazite (KCHA) zeolite membrane was prepared by coating KCHA zeolite on the surface of a porous alumina sphere. The performance of the KCHA zeolite membrane in extracting potassium from seawater and sea bittern at room ...
Jie Ouyang, Heng Wei, Jin Hou
doaj   +1 more source

Ion Transport Characteristics in Membranes for Direct Formate Fuel Cells

open access: yesFrontiers in Chemistry, 2020
Ion exchange membranes are widely used in fuel cells to physically separate two electrodes and functionally conduct charge-carrier ions, such as anion exchange membranes and cation exchange membranes.
Xiangyu Su, Zhefei Pan, Liang An
doaj   +1 more source

Strategically Altered Fluorinated Polymer at Nanoscale for Enhancing Proton Conduction and Power Generation from Salinity Gradient

open access: yesMembranes, 2022
Reverse electrodialysis (RED) generates power directly by transforming salinity gradient into electrical energy. The ion transport properties of the ion-exchange membranes need to be investigated deeply to improve the limiting efficiencies of the RED ...
Prem P. Sharma   +7 more
doaj   +1 more source

Water Splitting and Transport of Ions in Electromembrane System with Bilayer Ion-Exchange Membrane. [PDF]

open access: yesMembranes (Basel), 2020
Bilayer ion-exchange membranes are mainly used for separating single and multiply charged ions. It is well known that in membranes in which the layers have different charges of the ionogenic groups of the matrix, the limiting current decreases, and the ...
Melnikov S   +4 more
europepmc   +2 more sources

A Hybrid Ion-Exchange Fabric/Ceramic Membrane System to Remove As(V), Zn(II), and Turbidity from Wastewater

open access: yesApplied Sciences, 2020
Ceramic membranes and ion exchangers are effective at removing turbidity and ionic contaminants from water, respectively. In this study, we demonstrate the performance of a hybrid ion-exchange fabric/ceramic membrane system to treat metal ions and ...
Nag-Choul Choi   +4 more
doaj   +1 more source

Gas Permeability Test Protocol for Ion-Exchange Membranes

open access: yesFrontiers in Energy Research, 2022
The membrane-based electrolysis of water is a growing topic of interest due to the advantages of employing membranes in hydrogen production efficiency and system safety over the traditional alkaline water electrolysis. Ion-exchange membranes with low gas
Eun Joo Park   +2 more
doaj   +1 more source

Mass spectrometric analysis of pilus assembly, amyloid fibril formation, and membrane proteins in their native state [PDF]

open access: yes, 2012
Structural analysis of proteins and their complexes is crucial to understanding protein function. This thesis demonstrates the application of mass spectrometry (MS) to the study of pilus assembly on Gram-negative bacteria and amyloid formation in ...
Leney, Aneika Corrine
core   +6 more sources

FEATURES OF OPERATION OF POLYSTYRENE MEMBRANES IN PETROCHEMICAL INDUSTRY

open access: yesВ мире научных открытий, 2017
The article presents the research results of ion-exchange membranes based on polystyrene. Describes the process of swelling of ion exchange membrane for example, the swelling of the cation exchange resin in butanol.
E. K. Karimov   +4 more
doaj   +1 more source

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