Affiliation:
1. Chongqing University of Science and Technology
Abstract
This paper deals with experimental investigations related to removal of manganese (II) from electrolytic manganese residues by using ozone as oxidant. Ozone was used in this study to oxidize manganese converting bivalent manganese to high valence states, the oxidized salts will precipitate as manganese oxides, that to reach the concentration of the pollutant under its limit values in water. Effects of reaction temperature, reaction contact time and initial pH value on the manganese (II) removal were investigated. The results indicated that the removal rate exceeded 99.9 percent, and the manganese (II) in solution was lower than 0.1 mg·L-1 under the conditions of reaction temperature 45 °C, reaction contact time 40 min and initial pH 12.
Publisher
Trans Tech Publications, Ltd.
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