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Kinetics and equilibrium studies on removal of zinc(II) by untreated and anionic surfactant treated dead biomass of yeast: Batch and column mode

Paper ID Volume ID Publish Year Pages File Format Full-Text
3613 178 2012 18 PDF Available
Title
Kinetics and equilibrium studies on removal of zinc(II) by untreated and anionic surfactant treated dead biomass of yeast: Batch and column mode
Abstract

The present study was carried out using dead biomass of isolated yeast species viz. Candida rugosa and Candida laurentii as biosorbents for the removal of Zn(II) from aqueous environment. C. rugosa and C. laurentii exhibited 65.4% and 54.8% removal of zinc at pH 6.0 in presence of 90 mg L−1 Zn(II) at 30 °C in batch system. Remarkable increase in Zn(II) removal was noted using dead yeast biomass treated with anionic surfactant sodium dodecyl sulphate (SDS) which was confirmed through SEM analysis. Kinetic studies based on various models were carried out and the results showed a very good compliance with the fractional power model. The experimental data were analyzed using two, three and four parameter isotherm models. The most appropriate equation for describing the isotherm profile was Freundlich model. The biosorbent performance was evaluated in column mode packed with SDS treated dead biomass of C. rugosa entrapped in sodium alginate beads. FT-IR analysis showed the involvement of –NH, –CO and –COOH functional groups in the binding of Zn(II) by yeast. The present study confirmed that immobilized SDS treated dead biomass of C. rugosa may serve as potential and eco-friendly biosorbent for removal of Zn(II) ions from aqueous solution.

► Biosorption of zinc(II) by two yeast species has been investigated. ► Remarkable increase of zinc(II) removal was noted by SDS treatment. ► Kinetics was predicted satisfactorily by fractional power model. ► Equilibrium data was analyzed using two, three and four parameter models. ► Column data was fitted in BDST model.

Keywords
Biosorption; Zn(II); Kinetic parameters; Modelling; Wastewater treatment; Yeast
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Kinetics and equilibrium studies on removal of zinc(II) by untreated and anionic surfactant treated dead biomass of yeast: Batch and column mode
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 64, 15 May 2012, Pages 30–47
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