Effects of metal ions and organic ligands on the adsorption of Co(II) onto silicagel

Susumu Osaki; Yasuhiro Kuroki; Shinji Sugihara; Yoshimasa Takashima

doi:10.1016/0048-9697(90)90214-F

Effects of metal ions and organic ligands on the adsorption of Co(II) onto silicagel

Susumu Osaki, Yasuhiro Kuroki, Shinji Sugihara, Yoshimasa Takashima

Central Institute of Radioisotope Science and Safety Management

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

16 Citations (Scopus)

Abstract

Cobalt(II) ions were adsorbed onto silicagel from solutions containing metal ions and organic ligands. Levels of < 10^-4 M Ca(II), Zn(II), Fe(III) and Mn(II) did not affect adsorption, while 10^-3 M Fe(III) and Mn, as hydroxides, enhanced adsorption in the low pH region. Glycine, nitrilotriacetic acid (NTA) and ethylenediaminetetraacetic acid (EDTA) lower the rate of adsorption, as the surface complexation model predicts, but ethylenediamine did not interfere with adsorption. Humic and fulvic acids lowered the rate of adsorption in approximately the same manner as glycine. These effects are discussed in relation to the application of the surface complexation model to the adsorption of trace metal ions on particulates in fresh waters.

Original language	English
Pages (from-to)	93-103
Number of pages	11
Journal	Science of the Total Environment, The
Volume	99
Issue number	1-2
DOIs	https://doi.org/10.1016/0048-9697(90)90214-F
Publication status	Published - Dec 1 1990

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution

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10.1016/0048-9697(90)90214-F

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abstract = "Cobalt(II) ions were adsorbed onto silicagel from solutions containing metal ions and organic ligands. Levels of < 10-4 M Ca(II), Zn(II), Fe(III) and Mn(II) did not affect adsorption, while 10-3 M Fe(III) and Mn, as hydroxides, enhanced adsorption in the low pH region. Glycine, nitrilotriacetic acid (NTA) and ethylenediaminetetraacetic acid (EDTA) lower the rate of adsorption, as the surface complexation model predicts, but ethylenediamine did not interfere with adsorption. Humic and fulvic acids lowered the rate of adsorption in approximately the same manner as glycine. These effects are discussed in relation to the application of the surface complexation model to the adsorption of trace metal ions on particulates in fresh waters.",

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AU - Takashima, Yoshimasa

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N2 - Cobalt(II) ions were adsorbed onto silicagel from solutions containing metal ions and organic ligands. Levels of < 10-4 M Ca(II), Zn(II), Fe(III) and Mn(II) did not affect adsorption, while 10-3 M Fe(III) and Mn, as hydroxides, enhanced adsorption in the low pH region. Glycine, nitrilotriacetic acid (NTA) and ethylenediaminetetraacetic acid (EDTA) lower the rate of adsorption, as the surface complexation model predicts, but ethylenediamine did not interfere with adsorption. Humic and fulvic acids lowered the rate of adsorption in approximately the same manner as glycine. These effects are discussed in relation to the application of the surface complexation model to the adsorption of trace metal ions on particulates in fresh waters.

AB - Cobalt(II) ions were adsorbed onto silicagel from solutions containing metal ions and organic ligands. Levels of < 10-4 M Ca(II), Zn(II), Fe(III) and Mn(II) did not affect adsorption, while 10-3 M Fe(III) and Mn, as hydroxides, enhanced adsorption in the low pH region. Glycine, nitrilotriacetic acid (NTA) and ethylenediaminetetraacetic acid (EDTA) lower the rate of adsorption, as the surface complexation model predicts, but ethylenediamine did not interfere with adsorption. Humic and fulvic acids lowered the rate of adsorption in approximately the same manner as glycine. These effects are discussed in relation to the application of the surface complexation model to the adsorption of trace metal ions on particulates in fresh waters.

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