Selenium oxyanions: Highly selective uptake by a novel anion exchanger

Naofumi Kozai; Toshihiko Ohnuki; Sridhar Komarneni

doi:10.1557/JMR.2002.0433

Selenium oxyanions: Highly selective uptake by a novel anion exchanger

Naofumi Kozai, Toshihiko Ohnuki, Sridhar Komarneni

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34 Scopus citations

Abstract

We report the extremely high and selective uptake of selenium oxyanions by a novel anion exchanger, Ni_1-xZn_2x(OH)₂(OCOCH₃)_2x · nH₂O (0.15 < x < 0.25). The tested Ni-Zn basic salt (x = 0.24) exhibited very high selectivity for Se(IV) [K_d = 9.0 × 10⁴ cm³/g with an initial Se(IV) concentration of 1 × 10^-4M] in the presence of 0.1 M Cl^- solution. The uptake of Se(IV) on the Ni-Zn basic salt was irreversible when treated with solutions containing 1 N Cl^-, 1 N NO₃^-, or 1 N PO₄^3-. This novel exchanger also showed high K_d (2.6 × 10³ cm³/g) for Se(VI), and therefore it is expected to be useful for decontamination and removal of selenium oxyanions from contaminated water.

Original language	English (US)
Pages (from-to)	2993-2996
Number of pages	4
Journal	Journal of Materials Research
Volume	17
Issue number	12
DOIs	https://doi.org/10.1557/JMR.2002.0433
State	Published - Dec 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Selenium oxyanions: Highly selective uptake by a novel anion exchanger",

abstract = "We report the extremely high and selective uptake of selenium oxyanions by a novel anion exchanger, Ni1-xZn2x(OH)2(OCOCH3)2x · nH2O (0.15 < x < 0.25). The tested Ni-Zn basic salt (x = 0.24) exhibited very high selectivity for Se(IV) [Kd = 9.0 × 104 cm3/g with an initial Se(IV) concentration of 1 × 10-4M] in the presence of 0.1 M Cl- solution. The uptake of Se(IV) on the Ni-Zn basic salt was irreversible when treated with solutions containing 1 N Cl-, 1 N NO3-, or 1 N PO43-. This novel exchanger also showed high Kd (2.6 × 103 cm3/g) for Se(VI), and therefore it is expected to be useful for decontamination and removal of selenium oxyanions from contaminated water.",

author = "Naofumi Kozai and Toshihiko Ohnuki and Sridhar Komarneni",

year = "2002",

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doi = "10.1557/JMR.2002.0433",

language = "English (US)",

volume = "17",

pages = "2993--2996",

journal = "Journal of Materials Research",

issn = "0884-2914",

publisher = "Springer International Publishing AG",

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T1 - Selenium oxyanions

T2 - Highly selective uptake by a novel anion exchanger

AU - Kozai, Naofumi

AU - Ohnuki, Toshihiko

AU - Komarneni, Sridhar

PY - 2002/12

Y1 - 2002/12

N2 - We report the extremely high and selective uptake of selenium oxyanions by a novel anion exchanger, Ni1-xZn2x(OH)2(OCOCH3)2x · nH2O (0.15 < x < 0.25). The tested Ni-Zn basic salt (x = 0.24) exhibited very high selectivity for Se(IV) [Kd = 9.0 × 104 cm3/g with an initial Se(IV) concentration of 1 × 10-4M] in the presence of 0.1 M Cl- solution. The uptake of Se(IV) on the Ni-Zn basic salt was irreversible when treated with solutions containing 1 N Cl-, 1 N NO3-, or 1 N PO43-. This novel exchanger also showed high Kd (2.6 × 103 cm3/g) for Se(VI), and therefore it is expected to be useful for decontamination and removal of selenium oxyanions from contaminated water.

AB - We report the extremely high and selective uptake of selenium oxyanions by a novel anion exchanger, Ni1-xZn2x(OH)2(OCOCH3)2x · nH2O (0.15 < x < 0.25). The tested Ni-Zn basic salt (x = 0.24) exhibited very high selectivity for Se(IV) [Kd = 9.0 × 104 cm3/g with an initial Se(IV) concentration of 1 × 10-4M] in the presence of 0.1 M Cl- solution. The uptake of Se(IV) on the Ni-Zn basic salt was irreversible when treated with solutions containing 1 N Cl-, 1 N NO3-, or 1 N PO43-. This novel exchanger also showed high Kd (2.6 × 103 cm3/g) for Se(VI), and therefore it is expected to be useful for decontamination and removal of selenium oxyanions from contaminated water.

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Selenium oxyanions: Highly selective uptake by a novel anion exchanger

Abstract

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