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Treatment of cadmium-plating and chromium-plating wastes by iron oxide-coated sand

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Iron oxide-coated sand, prepared by evaporating (110° ± 10°C) ferric nitrate solution in the presence of sand, was found unsuitable for removal of chromium from a mixed oxidation-state chromium-plating waste (chromium 2.55 to 2.70 mg Cr/L) in a preliminary column test; however, it appeared promising for one-step removal of cadmium and cyanide from a cadmium-plating waste (cadmium 3.60 to 3.75 mg Cd/L; and cyanide 0.85 to 1.06 mg CN/L). A detailed column test with regeneration by 0.01 M NaNO3 solution at pH 3.0 further indicated suitability of the iron oxide-coated sand for treatment of cadmium-plating waste. Making the most of column operation in terms of hydraulic loading rate and medium depth and standardization of regeneration procedure are necessary.


Document Type: Research Article


Publication date: 1995-07-01

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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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