cation exchange


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Related to cation exchange: Cation exchange resin, Cation exchange membrane

cation exchange

n.
A chemical process in which cations are exchanged equally between a solid, such as zeolite, and a solution, such as water. The process is often used to soften water.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Major proton buffer reactions were probably dissolution of carbonates (especially for the SO site with 7.4g/kg inorganic C) followed by cation exchange reactions and/or cation exchange of [H.sup.+] v.
As montmorillonite is the main mineral in the soil, swelling will also depend on exchangeable cations or cation exchange capacity and the soil fabric [3].
Ethical issues of nanotechnology are also addressed Some areas described include thermal plasma assisted techniques for synthesis of high temperature material nanoparticles, honeycomb structured porous films via breath figures, synthesis techniques of nanostructured oxides, hierarchical modeling of biogeochemical processes and mechanisms that drive clay nano- and microfabric development, and organic-inorganic nano-composite cation exchange materials.
In this study, we used the cation exchange film contained the sulfonic acid groups and the anion exchange film contained the quaternary ammonium groups.
The Berkoion[TM] range is produced in the company's IS09001:2000 accredited manufacturing facilities, the units use high capacity cation exchange resins, are based on proven designs and feature corrosion resistant GRP resin vessels and polyethylene brine tanks.
After expression, we purified MutM using polyethleneimine (PEI) precipitation, ammonium sulfate precipitation, cation exchange chromatography, and size exclusion chromatography.
Along with the introduction of reversed-phase chromatography, the need for more readily automated procedures for the quantification of HbA2 and HbF for thalassemia assessment and HbA1c in relation to diabetic control led to the introduction of cation exchange HPLC systems as a means of separating Hb species.
Nitrates (N[O.sub.3.sup.-]) are readily leached from the soil because they are anions and are not held on the cation exchange sites.
The plant consists of two streams of cation exchange, anion exchange and mixed bed polishing, each capable of delivering up to 400 m3/h of boiler make-up water of conductivity 0.04[micro]S/cm and silica 0.02mg/l.
The linear arrangement of regularly spaced A[g.sub.2]S contained within a CdS nanorod forms spontaneously at a cation exchange rate of ~36%.
Unexpectedly, the extent of the intercalated alkylammonium cations is opposite to cation exchange capacity of the studied montmorillonites measured formerly (Navratilova and Vaculikova, 2006) - 0.46 mol [kg.sup.-1] (MMT(JP)) and 0.76 mol [kg.sup.-1] (MMT(SWy-2)).
Apple Synergic makes it possible to increase the cation exchange capacity (CEC) in the intestine and thus the assimilation of cations such as calcium, magnesium and potassium.