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Treatment of azo dye Orange II in a sequential anaerobic and aerobic-sequencing batch ractor system

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Abstract

We studied the biodegradation of Orange II in a sequential anaerobic and aerobic-sequencing batch reactor system. Granular activated carbon was used either packed into a column or added directly into the anaerobic reactor to investigate the treatment performance between the two operation conditions. We found that the circulation of mixed liquor between the anaerobic reactor and the carbon-packed column enhanced the chemical oxygen demand from 28 to 52% and Orange II removal efficiencies from 88 to 96%, under simultaneous adsorption and biodegradation process. The morphology of microbes was observed under an electron-scanning microscope.

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Authors and Affiliations

  1. Department of Applied Chemistry, Oita University, Oita, 870-1192, Japan

    Soon-An Ong, Eiichi Toorisaka, Makoto Hirata & Tadashi Hano

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  1. Soon-An Ong
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  2. Eiichi Toorisaka
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  3. Makoto Hirata
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  4. Tadashi Hano
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Correspondence to Soon-An Ong.

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Ong, SA., Toorisaka, E., Hirata, M. et al. Treatment of azo dye Orange II in a sequential anaerobic and aerobic-sequencing batch ractor system. Environ Chem Lett 2, 203–207 (2005). https://doi.org/10.1007/s10311-004-0098-z

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  • DOI: https://doi.org/10.1007/s10311-004-0098-z

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