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Removal of copper (II) using vermiculite

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Copper(II) removal efficiency by vermiculite has been investigated through laboratory experiments. The removal phenomenon appears to be consistent with an ion-exchange (exchange adsorption) process. The batch sorption equilibria follows Freundlich adsorption isotherm. The uptake of copper(II) is a function of the pH of the solution and increases with increasing pH. Increasing ionic strength and the presence of soluble complexing agents such as ethylene diamine tetraacetic acid (EDTA) decrease the sorption of copper (II). The presence of other divalent cations like calcium impede the uptake of copper( II). The presence of chloride ion has no significant effect on copper(II) removal. In a fixed bed vermiculite column, the removal efficiency of copper(II) from tap water is less than that from distilled water. Vermiculite can be regenerated with acid and can then be reused.

Keywords: copper; ion exchange; isotherm; removal; vermiculite

Document Type: Research Article


Publication date: November 1, 1992

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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