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Biosorption of phenol and o-chlorophenol from aqueous solutions on to chitosan-calcium alginate blended beads.
J Hazard Mater. 2009 Feb 15; 162(1):482-9.JH

Abstract

Beads of chitosan-sodium alginate are prepared from naturally occurring biopolymers, chitosan (a cationic polysaccharide) and sodium alginate (an anionic polysaccharide). These beads are treated with CaCl(2) in order to improve the stability as well as the sorption capacity of the biosorbent. The resulting chitosan-alginate beads are characterized by BET surface area analysis, Fourier transformer infrared spectroscopy (FTIR) and wide-angle X-ray diffraction (WXRD) techniques. The efficiency of the biosorbent is studied by measuring the uptake using the equilibrium batch technique and breakthrough curves obtained from column flow experiments. The effect of pH, contact time, initial concentration of adsorbate and amount of biosorbent on adsorption capacity of the biosorbent is investigated. The equilibrium adsorption data are fitted to first-order and second-order kinetic equations, and to Weber-Morris model. The Freundlich, Langmuir and Dubinin-Radushkevich (D-R) adsorption isotherm models are used for the description of the biosorption process. Further, column break-through curves are obtained and the sorbent loaded with phenol and o-chlorophenol is regenerated using 0.1M NaOH solution. The experimental results suggest that the chitosan-calcium alginate blended biosorbent is effective for the removal of phenol and o-chlorophenol from an aqueous medium.

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Authors+Show Affiliations

Nadavala SK
Department of Chemistry, Sri Venkateswara University, Tirupati 517502, India.
Swayampakula K
No affiliation info available
Boddu VM
No affiliation info available
Abburi K
No affiliation info available

MeSH

AdsorptionAlginatesCalcium ChlorideChitosanChlorophenolsDiffusionGlucuronic AcidHexuronic AcidsHydrogen-Ion ConcentrationKineticsModels, StatisticalPhenolsPorositySolutionsSpectroscopy, Fourier Transform InfraredSurface PropertiesThermodynamicsWaterX-Ray Diffraction

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18573601

Citation

Nadavala, Siva Kumar, et al. "Biosorption of Phenol and O-chlorophenol From Aqueous Solutions On to Chitosan-calcium Alginate Blended Beads." Journal of Hazardous Materials, vol. 162, no. 1, 2009, pp. 482-9.
Nadavala SK, Swayampakula K, Boddu VM, et al. Biosorption of phenol and o-chlorophenol from aqueous solutions on to chitosan-calcium alginate blended beads. J Hazard Mater. 2009;162(1):482-9.
Nadavala, S. K., Swayampakula, K., Boddu, V. M., & Abburi, K. (2009). Biosorption of phenol and o-chlorophenol from aqueous solutions on to chitosan-calcium alginate blended beads. Journal of Hazardous Materials, 162(1), 482-9. https://doi.org/10.1016/j.jhazmat.2008.05.070
Nadavala SK, et al. Biosorption of Phenol and O-chlorophenol From Aqueous Solutions On to Chitosan-calcium Alginate Blended Beads. J Hazard Mater. 2009 Feb 15;162(1):482-9. PubMed PMID: 18573601.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biosorption of phenol and o-chlorophenol from aqueous solutions on to chitosan-calcium alginate blended beads. AU - Nadavala,Siva Kumar, AU - Swayampakula,Kalyani, AU - Boddu,Veere M, AU - Abburi,Krishnaiah, Y1 - 2008/05/21/ PY - 2007/06/10/received PY - 2008/04/13/revised PY - 2008/05/16/accepted PY - 2008/6/25/entrez PY - 2008/6/25/pubmed PY - 2009/4/3/medline SP - 482 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 162 IS - 1 N2 - Beads of chitosan-sodium alginate are prepared from naturally occurring biopolymers, chitosan (a cationic polysaccharide) and sodium alginate (an anionic polysaccharide). These beads are treated with CaCl(2) in order to improve the stability as well as the sorption capacity of the biosorbent. The resulting chitosan-alginate beads are characterized by BET surface area analysis, Fourier transformer infrared spectroscopy (FTIR) and wide-angle X-ray diffraction (WXRD) techniques. The efficiency of the biosorbent is studied by measuring the uptake using the equilibrium batch technique and breakthrough curves obtained from column flow experiments. The effect of pH, contact time, initial concentration of adsorbate and amount of biosorbent on adsorption capacity of the biosorbent is investigated. The equilibrium adsorption data are fitted to first-order and second-order kinetic equations, and to Weber-Morris model. The Freundlich, Langmuir and Dubinin-Radushkevich (D-R) adsorption isotherm models are used for the description of the biosorption process. Further, column break-through curves are obtained and the sorbent loaded with phenol and o-chlorophenol is regenerated using 0.1M NaOH solution. The experimental results suggest that the chitosan-calcium alginate blended biosorbent is effective for the removal of phenol and o-chlorophenol from an aqueous medium. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18573601/Biosorption_of_phenol_and_o_chlorophenol_from_aqueous_solutions_on_to_chitosan_calcium_alginate_blended_beads_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00749-8 DB - PRIME DP - Unbound Medicine ER -