Abstract:
:The interaction of Acid Yellow 99 (AY 99) with coir pith has been investigated in aqueous medium to understand the mechanism of adsorption and explore the potentiality of this biomass towards controlling pollution resulting from textile dyes. The obtained results establish that one gram of coir pith can adsorb 442.13 mg of AY 99. The adsorption process is found to be a function of pH of the solution, the optimum pH value being 2.0. The process follows Langmuir-Freundlich dual isotherm model. Scanning electron microscopic analysis demonstrates that on dye adsorption the biomass develops uneven and irregular surface. X-ray diffraction study indicates incorporation of the dye into the micropores and macropores of the adsorbent and thereby enhancing its degree of crystallinity. The results of Fourier transform infrared (FTIR) spectroscopy and chemical modification of the functional groups establish that binding of AY 99 on coir pith occurs through electrostatic and complexation reaction.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Khan MM,Ray M,Guha AKdoi
10.1016/j.biortech.2010.10.107subject
Has Abstractpub_date
2011-02-01 00:00:00pages
2394-9issue
3eissn
0960-8524issn
1873-2976pii
S0960-8524(10)01763-3journal_volume
102pub_type
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