Effect of competitive ions on the arsenic removal by mesoporous hydrous zirconium oxide from drinking water

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2010.07.011· OSTI ID:22202852

Bortun, Anatoly; Bortun, Mila; Pardini, James ^[1]; Khainakov, Sergei A. ^[2]

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1. MEL Chemicals Inc., 500 Barbertown Point Breeze Road, Flemington, NJ 08822 (United States)
2. Departamento de Quimica Organica e Inorganica, Universidad de Oviedo, C/ Julian Claveria, 8, 33006 Oviedo (Spain)

Adsorption properties of 302-type commercially available hydrous zirconium oxide (302-HZO) towards arsenic and some competitive anions and cations have been studied under batch and column conditions. Due to amphoteric properties, anion exchange performance of hydrous zirconium oxide is pH dependent. Media exhibits high affinity towards arsenic in a broad pH range, with high adsorption capacity at pH < 8. It was shown that silicate and phosphate ions are arsenic's main competitors affecting media adsorption capacity. Presence of transition metal cations in <1 ppm does not affect 302-HZO capacity on arsenic, whereas alkaline-earth cations improve arsenic removal. The possibility for significant increase of 302-HZO adsorption capacity on arsenic at pH > 8 by using 'solid acidifier' technique is discussed. Results of 302-HZO field trials are presented.

• OSTI ID: 22202852
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11 Vol. 45; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
ANIONS
ARSENIC
CATIONS
INORGANIC COMPOUNDS
NANOSTRUCTURES
PHASE DIAGRAMS
SILICATES
TRANSITION ELEMENTS
ZIRCONIUM OXIDES