Biodegradation of textile dyes waste water by Pleurotus eryngii

Document Type : Research and Reference

Authors

Faculty of Science, Tanta University

Abstract

The potential of Pleurotus eryngii was studied for
decolorization ability of different types of textile dyes which
were screened on liquid medium. During decolorization study on
seven textile dyes, it was found that P. eryngii had the most
efficient decolorization on reactive Blue 21 with decolorization
percentage (98.4%). On the other hand, the immobilized P.
eryngii on wheat straw, rice straw, sugar cane waste and wheat
bran had biodegradation ability of Blue 21 dye. The
immobilization of fungus on sugar cane waste gave more
efficient decolorization of Blue 21 with decolorization
percentage (83.5%). Also it was found that the decolorization
percentage in case of free P. eryngii was (50.8%). The fungus
has the ability to produce lignin-degrading enzymes as laccase,
Mn peroxidase, peroxidase and catechol oxidase enzymes.
Immobilized P. eryngii on sugar cane waste exhibited the ability
to treat industrial textile effluent, 85 to 90% reductions of various
nutrients including biological oxygen demand (BOD) and
chemical oxygen demand COD were achieved and color removal
reached to 96%. So, it was suggested that the immobilized P.
eryngii might be applicable to textile effluent system. It was
found that the reuse of the treated textile effluent with
immobilized P. eryngii on sugar cane waste for irrigation of Basil
plant and good result similar to that obtained by tap water.

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