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Decolourisation and detoxification in the fungal treatment of textile wastewaters from dyeing processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
33532 44983 2011 8 PDF Available
Title
Decolourisation and detoxification in the fungal treatment of textile wastewaters from dyeing processes
Abstract

In this study a selected fungal strain, Bjerkandera adusta (Willdenow) P. Karsten MUT 3060, was tested in different culture conditions to assess its real potential for bioremediation of textile wastewaters in terms of both decolourisation and detoxification. The fungus efficiently decolourised (colour removal up to 96%) four simulated wastewaters that mimic the recalcitrance of real ones for pH values, concentration of dyes, additives and salts. In the culture condition with the lowest N content, the decolourisation was coupled with an important detoxification of two simulated effluents, underlining the important influence of the cultural medium composition not only on the degradation but also on the detoxification of industrial wastes. In the other cases, despite an extensive decolourisation, no detoxification was observed. The fungus was further tested against a real effluent, collected from a wastewater treatment plant before and after the tertiary treatment (ozonation) to compare the two technologies in terms of chemical and toxicological parameters. The fungal treatment, although less efficient than ozonation, caused a good decolourisation of the effluent, with colour values within the threshold limits of the Italian law; both the fungal and the ozone treatment caused a detoxification, but only towards one of the three organisms used for the ecotoxicological tests. These results underline the crucial importance of the ecotoxicological analysis in assessing the applicability of a wastewater treatment.

► B. adusta was able to effectively decolourise different textile wastewaters. ► B. adusta produced a different enzymatic pattern according to the culture conditions. ► By media engineering we optimized decolourisation but not detoxification. ► Wastewater detoxification is not always achieved both by fungal and ozone treatment. ► Activated sludge could be used to reduce COD and toxicity after fungal treatment.

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Decolourisation and detoxification in the fungal treatment of textile wastewaters from dyeing processes
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Publisher
Database: Elsevier - ScienceDirect
Journal: New Biotechnology - Volume 29, Issue 1, 15 December 2011, Pages 38–45
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us