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Esterified coir pith as an adsorbent for the removal of Co(II) from aqueous solution.
Bioresour Technol. 2008 Apr; 99(6):2083-6.BT

Abstract

Coir pith was chemically modified for the adsorption of cobalt(II) ions from aqueous solution. Chemical modification was done by esterification using succinic anhydride followed by activation with NaHCO(3) in order to improve the adsorption of Co(II). Adsorptive removal of Co(II) from aqueous solution onto modified coir pith was evaluated in batch studies under varying conditions of agitation time and metal ion concentration to assess the kinetic and equilibrium parameters. A pseudo-second-order kinetic model fitted well for the sorption of Co(II) onto modified coir pith. Sorption kinetics showed that the loading of Co(II) by this material was quite fast under ambient conditions. The Langmuir and Freundlich equilibrium isotherm models provided excellent fits for the adsorption data, with R(2) of 0.99 and 0.98, respectively. After esterification, the maximum Co(II) sorption loading Q(0); was greatly improved. It is evident that chemically modified adsorbent exhibits better Co(II) removal capability than raw adsorbent suggesting that surface modification of the adsorbent generates more adsorption sites on its solid surface for metal adsorption. A complete recovery of the adsorbed metal ions from the spent adsorbent was achieved by using 1.0N HCl.

Authors+Show Affiliations

Parab H
Analytical Chemistry Division, Modular Labs, Bhabha Atomic Research Centre, Trombay, Mumbai, India. harshalap@hotmail.com
Joshi S
No affiliation info available
Shenoy N
No affiliation info available
Lali A
No affiliation info available
Sarma US
No affiliation info available
Sudersanan M
No affiliation info available

MeSH

AdsorptionBiocompatible MaterialsBiotechnologyCelluloseCobaltIndustrial WasteKineticsLigninModels, ChemicalSurface PropertiesTemperatureTime FactorsWaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17611104

Citation

Parab, Harshala, et al. "Esterified Coir Pith as an Adsorbent for the Removal of Co(II) From Aqueous Solution." Bioresource Technology, vol. 99, no. 6, 2008, pp. 2083-6.
Parab H, Joshi S, Shenoy N, et al. Esterified coir pith as an adsorbent for the removal of Co(II) from aqueous solution. Bioresour Technol. 2008;99(6):2083-6.
Parab, H., Joshi, S., Shenoy, N., Lali, A., Sarma, U. S., & Sudersanan, M. (2008). Esterified coir pith as an adsorbent for the removal of Co(II) from aqueous solution. Bioresource Technology, 99(6), 2083-6.
Parab H, et al. Esterified Coir Pith as an Adsorbent for the Removal of Co(II) From Aqueous Solution. Bioresour Technol. 2008;99(6):2083-6. PubMed PMID: 17611104.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Esterified coir pith as an adsorbent for the removal of Co(II) from aqueous solution. AU - Parab,Harshala, AU - Joshi,Shreeram, AU - Shenoy,Niyoti, AU - Lali,Arvind, AU - Sarma,U S, AU - Sudersanan,M, Y1 - 2007/07/03/ PY - 2005/07/29/received PY - 2007/03/19/revised PY - 2007/03/19/accepted PY - 2007/7/6/pubmed PY - 2008/5/21/medline PY - 2007/7/6/entrez SP - 2083 EP - 6 JF - Bioresource technology JO - Bioresour Technol VL - 99 IS - 6 N2 - Coir pith was chemically modified for the adsorption of cobalt(II) ions from aqueous solution. Chemical modification was done by esterification using succinic anhydride followed by activation with NaHCO(3) in order to improve the adsorption of Co(II). Adsorptive removal of Co(II) from aqueous solution onto modified coir pith was evaluated in batch studies under varying conditions of agitation time and metal ion concentration to assess the kinetic and equilibrium parameters. A pseudo-second-order kinetic model fitted well for the sorption of Co(II) onto modified coir pith. Sorption kinetics showed that the loading of Co(II) by this material was quite fast under ambient conditions. The Langmuir and Freundlich equilibrium isotherm models provided excellent fits for the adsorption data, with R(2) of 0.99 and 0.98, respectively. After esterification, the maximum Co(II) sorption loading Q(0); was greatly improved. It is evident that chemically modified adsorbent exhibits better Co(II) removal capability than raw adsorbent suggesting that surface modification of the adsorbent generates more adsorption sites on its solid surface for metal adsorption. A complete recovery of the adsorbed metal ions from the spent adsorbent was achieved by using 1.0N HCl. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/17611104/Esterified_coir_pith_as_an_adsorbent_for_the_removal_of_Co_II__from_aqueous_solution_ DB - PRIME DP - Unbound Medicine ER -