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 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.
Novotný
Ceněk
C
Institute of Microbiology of the ASCR, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic. novotny@biomed.cas.cz
Svobodová
Kateřina
K
Benada
Oldřich
O
Kofroňová
Olga
O
Heissenberger
Andreas
A
Fuchs
Werner
W
D001419:Bacteria / Q000378:metabolism*; D001487:Basidiomycota / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology; D002244:Carbon / Q000302:isolation & purification; D003116:Color; D004396:Coloring Agents / Q000737:chemistry; D004798:Enzymes / Q000378:metabolism; D005374:Filtration; D007220:Industrial Waste / Q000032:analysis*; D008031:Lignin / Q000378:metabolism; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*
D004396:Coloring Agents; D004798:Enzymes; D007220:Industrial Waste; D002244:Carbon; D008031:Lignin