• Journal of Life Science
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• v.12 no.3
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• pp.288-293
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• 2002

A reactive dye-degrading bacterium was isolated from textile waste water and it was identified as Stenotrophomonas maltophilia based on its biochemical characteristics. The effects of additional carbon and nitrogen sources were investigated for the development of an optimal medium for biodegradation of Remazol Black B by 5. maltophilia. The optimal pH and temperature were determined to be 6.5 and 3$0^{\circ}C$, respectively. Remazol Black B with the initial concentration of 50 ppm could be degraded up to 86% within 28 h.

• KSBB Journal
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• v.14 no.6
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• pp.688-695
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• 1999

Biodegradation of the reactive dye, Remazol Black B was investigated in an upflow anaerobic sludge blanket(UASB) reactor. Important parameters studied include dye concentration(20-60 mg/L), glucose concentration as a co-substrate(1,000-3,000 mg/L), hydraulic retention time(3-24 hr), and influent pH(6.0-8.0). Under most conditions tested, the molecules of Black B were degraded readily and completely according to HPLC chromatograms. However, the color removal efficiency based on spectroscopic measurement was always approximately 75%. This suggests that the degradation products have some color intensity corresponding to 25% of the original dye molecules. The maximum influent dye concentration which satisfies the legal discharge limit of color intensity of 400 ADMI was 13 mg/L. and the highest removal rate at this dye concentration was 104 mg/L${\cdot}$day.