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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Sep 2013, 34 (5)                                     Back


nstantaneous and historical temperature effects on a-pinene

Biosorption of lead by Kluyveromyces marxianus immobilized

in alginate beads

 

S. Sai Subhashini1, M. Velan2 and S. Kaliappan3*

1Department of Civil Engineering, College of Engineering, Anna University, Chennai -600 025, India

2Department of Chemical Engineering, Anna University, Chennai -600 025, India

3Department of Civil Engineering, Ponjesly College of Engineering, Anna University, Nagercoil-629 003, India

*Corresponding Author email : drkalsun@yahoo.com

 

 

 

 Publication Data

Paper received:

03 April 2012

 

Revised received:

12 December 2012

 

Accepted:

24 December 2012

 

Abstract

The uptake and recovery of Pb (II) ions were investigated by using sodium alginate beads. Biosorption experiments are carried out in batch mode. The experimental results showed that the beads were effective in removing Pb (II) ions from solution. Biosorption equilibrium was approached within 16hrs. Pseudo first order was applicable to all the sorption data over the entire time range. The sorption data conformed well for the Langmuir isotherm model. The maximum adsorption capacity (qmax) onto alginate beads was 62.5 mg g-1 for Pb (II) ions. The maximum uptake of metal ions was obtained at pH 7. At temperature 35?C, the biosorption of metal ions was found to be highest, with increase or decrease in temperature resulted in a decrease in the metal ions uptake capacity. The maximum removal efficiency of 94.02% was obtained at 100 mg l-1 of metal concentration with 200 numbers of immobilized beads. The results suggested that alginate beads can be used as a biosorbent for an efficient removal of Pb (II) ions from aqueous solution.

 

Key words

Alginate beads, Biosorption, Immobilized beads, Isotherms, Kluyeromyces marxianus, Lead

 

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