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Photo-Degradation of C.I. Disperse Blue 56 by UV Irradiation Combined with Manganese Minerals

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Photo-degradation of C.I. Disperse Blue 56 (DB56) by UV irradiation combined with manganese minerals (UV/MM) was investigated in this paper. Through comparative study with the UV/titanium dioxide (TiO2) process, it was found that the UV/MM method had similar photodegradation efficiency to UV/TiO2 and was slightly more effective in removing the toxicity. In the conditions of DB56 concentration  =  400 mg/L, pH  =  9.0, manganese minerals dosage  =  20 g/L, room temperature (25°C), dissolved oxygen (O2)  =  50 L/h, and reaction time  =  1 hour, the color and chemical oxygen demand removal percentages were up to approximately 94 and 51%, respectively. The results of this study indicate that UV/MM is an alternative approach that should be explored further in the treatment of dyeing wastewaters.

Keywords: C.I. Disperse Blue 56; UV irradiation; manganese minerals; photodegradation

Document Type: Research Article


Publication date: 2010-07-01

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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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