Effect of Divalent Metal Cations on Contaminant Removal by Bicarbonate-Form Anion Exchange Resin

Christopher A. Rokicki; Treavor H. Boyer

doi:10.1080/01496395.2015.1056358

Effect of Divalent Metal Cations on Contaminant Removal by Bicarbonate-Form Anion Exchange Resin

Christopher A. Rokicki, Treavor H. Boyer

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This work investigated the role of divalent metal cations (Mg²⁺, Ca²⁺, and Cd²⁺) and subsequent precipitation or complexation on decreased contaminant removal by bicarbonate-form anion exchange resin (AER-HCO₃) relative to chloride-form AER (AER-Cl). The results showed that the removal of dissolved organic carbon and nitrate was lower for AER-HCO₃ than AER-Cl, and contaminant removal by AER-HCO₃ was affected by the presence of metal cation. For instance, magnesium and cadmium exhibited the greatest and least interference, respectively, with contaminant removal by AER-HCO₃. The results suggested that precipitation was not the cause of decreased contaminant removal by AER-HCO₃, and instead implied that complex formation between the contaminant and divalent metal was responsible for differences in removal by AER

Original language	English (US)
Pages (from-to)	2284-2294
Number of pages	11
Journal	Separation Science and Technology (Philadelphia)
Volume	50
Issue number	15
DOIs	https://doi.org/10.1080/01496395.2015.1056358
State	Published - Oct 13 2015
Externally published	Yes

Keywords

fouling
magnetic ion exchange (MIEX)
natural organic matter (NOM)

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Process Chemistry and Technology
Filtration and Separation

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10.1080/01496395.2015.1056358

Cite this

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abstract = "This work investigated the role of divalent metal cations (Mg2+, Ca2+, and Cd2+) and subsequent precipitation or complexation on decreased contaminant removal by bicarbonate-form anion exchange resin (AER-HCO3) relative to chloride-form AER (AER-Cl). The results showed that the removal of dissolved organic carbon and nitrate was lower for AER-HCO3 than AER-Cl, and contaminant removal by AER-HCO3 was affected by the presence of metal cation. For instance, magnesium and cadmium exhibited the greatest and least interference, respectively, with contaminant removal by AER-HCO3. The results suggested that precipitation was not the cause of decreased contaminant removal by AER-HCO3, and instead implied that complex formation between the contaminant and divalent metal was responsible for differences in removal by AER",

keywords = "fouling, magnetic ion exchange (MIEX), natural organic matter (NOM)",

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AU - Boyer, Treavor H.

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Effect of Divalent Metal Cations on Contaminant Removal by Bicarbonate-Form Anion Exchange Resin

Abstract

Keywords

ASJC Scopus subject areas

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