NDLI: Exploring strategies for adsorption of azo dye Congo Red using free and immobilized biomasses of Trametes pubescens

Content Provider	Springer Nature Link
Author	Si, Jing Yuan, Tong Qi Cui, Bao Kai
Copyright Year	2014
Abstract	Immobilized biomass of white rot fungus Trametes pubescens was explored for adsorption of azo dye Congo Red. The biomass immobilized by sodium alginate enhanced the sorption capacity for Congo Red approximately 4-fold of the free biomass, which competed well with other reported sorbents. Dye uptake was favored by acidic conditions at pH 2.0 with increasing initial dye concentration up to 100 mg/L using less biomass at room temperature and agitation speed. Adsorption of dyes onto the biomass was weakly dependent on ionic strength. Additionally, the adsorption process followed the pseudo-second-order kinetic and Freundlich isotherm models. During this process, the morphological changes on the biomass surface occurred; the amine functional groups present on the cell surface were mainly responsible for this process, and reduction in crystallinity of the biomass was observed, as confirmed by SEM, FT-IR, and X-ray diffraction, respectively. Desorption experiments were performed to regenerate the sorbent, making the process more economic and environmentally friendly. These demonstrated that the immobilized T. pubescens biomass is a promising sorbent for Congo Red removal.
Starting Page	411
Ending Page	421
Page Count	11
File Format	PDF
ISSN	15904261
Journal	Annals of Microbiology
Volume Number	65
Issue Number	1
e-ISSN	18692044
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-03-30
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Dye adsorption Trametes pubescens biomass Immobilization Kinetic modeling Adsorption isotherms Microbiology Microbial Genetics and Genomics Microbial Ecology Fungus Genetics Medical Microbiology Applied Microbiology
Content Type	Text
Resource Type	Article
Subject	Applied Microbiology and Biotechnology

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