Results 81 to 90 of about 2,201,882 (299)

Chloride-sulphate exchange on anion resins — kinetic investigation, IX. Direct, isotopic and reverse exchange

open access: yes, 1983
Experimental kinetics of direct, isotopic and reverse Cl-/SO=4 exchange on different anion resins are presented. At very low concentration (C = 6 × 10-3 N) extremely high resin selectivity toward sulphates occurs (separation factors ranging from 52 to ...
D. Petruzzelli   +5 more
core   +1 more source

Renewable Intermittency Redistributes Catalyst Recovery and Membrane Degradation in Anion Exchange Membrane Water Electrolysis

open access: yesAdvanced Energy Materials, EarlyView.
Solar‐mimicking intermittency is shown to redistribute degradation and recovery in AEM water electrolysis. Operando XAS reveals reversible oxidation‐state and coordination changes in reconstructed NiFe (oxy)hydroxide layers during zero‐load intervals, while complementary membrane analyses identify concurrent chemical and morphological deterioration ...
Anastasiia Voronova   +7 more
wiley   +1 more source

Radiation-induced decomposition of anion exchange resins

open access: yes, 2010
Radiation-induced degradation of the strongly basic anion exchange resin Amberliter (TM) IRA400 in NO(3)(-) Cl(-) and OH(-) forms has been studied. The research focused on the formation of molecular hydrogen in the gamma-radiolysis of water slurries of ...
Jay A. LaVerne   +5 more
core   +1 more source

Modificação do polímero condutor polianilina para uso como trocador catiônico

open access: yesQuímica Nova, 2014
This article reports the use of polyaniline (PAni), chemically and electrochemically synthesized, for copper removal from aqueous solutions. PAni films were electrodeposited on reticulated vitreous carbon (RVC).
Rafael L. Zornitta   +2 more
doaj   +1 more source

Detoxification of a Lignocellulosic Waste from a Pulp Mill to Enhance Its Fermentation Prospects

open access: yesEnergies, 2017
Detoxification is required for sugar bioconversion and hydrolyzate valorization within the biorefining concept for biofuel or bio-product production. In this work, the spent sulfite liquor, which is the main residue provided from a pulp mill, has been ...
Tamara Llano   +2 more
doaj   +1 more source

Direct Air Capture Using Electrochemically Regenerated Anion Exchange Resins. [PDF]

open access: yesEnviron Sci Technol, 2022
Shu Q   +4 more
europepmc   +1 more source

Synergistic Effect on Enhanced Oil Recovery in High Salinity Carbonate Reservoirs Using a Novel PEI‐Functionalized Carbon Nanotube Nanocomposite

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Enhancing oil recovery (EOR) in mature reservoirs is hindered by high interfacial tension (IFT) and oil‐wet rock formations, especially under harsh, high‐salinity conditions. This study aims to overcome these limitations by synthesizing a novel carbon nanotube nanocomposite covalently grafted with polyethylenimine and non‐covalently ...
Mohamed Abu Shuheil   +8 more
wiley   +1 more source

Electrodialysis Treatment of Nitrate‐Contaminated Groundwater Using Modified Cation‐Exchange Membranes

open access: yesJournal of Applied Polymer Science, EarlyView.
Monovalent selectivity in ion‐exchange membranes is enhanced through dielectric exclusion, electrostatic repulsion, and size‐sieving mechanisms, often acting synergistically. Polyethyleneimine modification and glutaraldehyde crosslinking enable selective electrodialysis of nitrate‐contaminated groundwater, achieving 99% nitrate removal with reduced ...
Alexia Voutetaki   +5 more
wiley   +1 more source

The Preconcentration and Determination of Pb2+, Cu2+, Co2+, Ni2+, Fe2+ and Zn2+ Elements in Water Samples Using Citrate Form of Anion-Exchange Resin [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1995
Lead, copper, cobalt, nickel, iron and zinc ions form monocitrate complexes (negative charge) in citrate solution which is absorbed on the citrate form of anion-exchange resins (citrate as counter ion) y exchange of citrate ion with citrate complexes ...
Mohammad Hossein Arbab Zavar   +1 more
doaj  

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