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1978•Journal of the Environmental Engineering DivisionRequires access

Removal of Cadmium (II) by Activated Carbon Adsorption

Chin‐Pao Huang, F. B. Ostovic

Open publisher page 153 citations

Abstract

The adsorption of cadmium (II) from a dilute aqueous solution onto an activated carbon surface is investigated. The type and dose of activated carbon, the total concentration of cadmium (II), pH, and the presence of a chelating agent are essential parameters controlling cadmium (II) adsorption. The adsorption of cadmium (II) can be quantitatively interpreted by a surface complex formation model, according to which the surface hydroxo groups serve as the ligand and the free cadmium ions the central metal. Three surface complexes were observed. The surface stability constants vary with pH.

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What this paper is about

The adsorption of cadmium (II) from a dilute aqueous solution onto an activated carbon surface is investigated. The type and dose of activated carbon, the total concentration of cadmium (II), pH, and the presence of a chelating agent are essential parameters controlling cadmium (II) adsorption. The adsorption of cadmium (II) can be quantitatively interpreted by a surface complex formation model, according to which the surface hydroxo groups serve as the ligand and the free cadmium ions the central metal. Three surface complexes were observed. The surface stability constants vary with pH.

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Available abstract

The adsorption of cadmium (II) from a dilute aqueous solution onto an activated carbon surface is investigated. The type and dose of activated carbon, the total concentration of cadmium (II), pH, and the presence of a chelating agent are essential parameters controlling cadmium (II) adsorption. The adsorption of cadmium (II) can be quantitatively interpreted by a surface complex formation model, according to which the surface hydroxo groups serve as the ligand and the free cadmium ions the central metal. Three surface complexes were observed. The surface stability constants vary with pH.

Key concepts: Cadmium, Adsorption, Activated carbon, Chemistry, Aqueous solution, Inorganic chemistry, Chelation, Metal

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