Potential of combined fungal and bacterial treatment for color removal in textile wastewater
Low efficiency of dye removal by mixed bacterial communities and high rates of dye decolorization by white-rot fungi suggest a combination of both processes to be an option of treatment of textile wastewaters containing dyes and high concentrations of organics. Bacteria were able to remove mono-azo...
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Veröffentlicht in: | Bioresource technology 2011, Vol.102 (2), p.879-888 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Low efficiency of dye removal by mixed bacterial communities and high rates of dye decolorization by white-rot fungi suggest a combination of both processes to be an option of treatment of textile wastewaters containing dyes and high concentrations of organics. Bacteria were able to remove mono-azo dye but not other chemically different dyes whereas decolorization rates using
Irpex lacteus mostly exceeded 90% within less than one week irrespective of dye structure. Decolorization rates for industrial textile wastewaters containing 2–3 different dyes by fungal trickling filters (FTF) attained 91%, 86%, 35% within 5–12
d. Sequential two-step application of FTF and bacterial reactors resulted in efficient decolorization in 1st step (various single dyes, 94–99% within 5
d; wastewater I, 90% within 7
d) and TOC reduction of 95–97% in the two steps. Large potential of combined use of white-rot fungi and traditional bacterial treatment systems for bioremediation of textile wastewaters was demonstrated. |
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ISSN: | 0960-8524 1873-2976 |
DOI: | 10.1016/j.biortech.2010.09.014 |