Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/29760
Title: Removal of heavy metal ions from water using sawdust-based activated carbon
Authors: Raji, C
Manju, G N
Anirudhan, T S
Issue Date: Dec-1997
Publisher: NISCAIR-CSIR, India
Abstract: The removal of Pb(II), Hg(II) and Cd(II) by activated carbon prepared from bicarbonate-treated rubber wood sawdust has been found to be concentration, pH and temperature dependent. The percentage adsorption of metal ions increased with decrease in initial concentration of metal ions, increase in adsorbent dosage and temperature. The optimum pH range for the removal of Pb(II) and Hg (II) is 4-8 whereas maximum uptake for Cd(II) is in the pH range 5-9. The applicability of Lagergren kinetic model has also been investigated. The equilibrium data at different temperatures fit well with the Langmuir isotherm. Thermodynamic constant (Ko) and standard free energy GO), enthalpy Ho) and entropy (ΔS°) changes were calculated for predicting the nature of adsorption. The surface mass transfer coefficient as a function of initial adsorbate concentration has been determined. Desorption studies revealed that spent adsorbent can be regenerated and reused by 0.2 M HC1.
Page(s): 254-260
URI: http://hdl.handle.net/123456789/29760
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.04(6) [December 1997]

Files in This Item:
File Description SizeFormat 
IJEMS 4(6) 254-260.pdf1.57 MBAdobe PDFView/Open


Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.