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Hexavalent chromium sorption by biomass of chromium tolerant Pythium sp.
J Basic Microbiol. 2011 Apr; 51(2):173-82.JB

Abstract

The removal of Cr(VI) from aqueous solutions by live and pretreated fungal biomass of Pythium sp was investigated in a batch mode. The influence of biomass dose, solution pH, initial metal ion concentration, temperature and pretreatment of biomass on biosorption efficiency was studied. The acid pretreated biomass adsorbed 1.7 times more hexavalent chromium in comparison to untreated biomass. The chromium removal rate increased with decrease in pH and increase in Cr(VI) concentration, biomass dose and temperature. The adsorption data was described well by Freundlich isotherm model. Evaluation of biosorption mechanism using infrared spectroscopy showed the involvement of positively charged amino groups in Cr(VI) biosorption. The biosorption of Cr(VI) by Pythium sp. followed second order kinetics, the biosorption process was found to be spontaneous and endothermic with high affinity of biomass for Cr(VI).

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Publisher Full Text (DOI)

Authors+Show Affiliations

Kavita B
BRD School of Biosciences, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India.
Limbachia J
No affiliation info available
Keharia H
No affiliation info available

MeSH

AdsorptionBiomassChromiumHydrogen-Ion ConcentrationKineticsPythiumTemperatureThermodynamicsWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21298678

Citation

Kavita, B, et al. "Hexavalent Chromium Sorption By Biomass of Chromium Tolerant Pythium Sp." Journal of Basic Microbiology, vol. 51, no. 2, 2011, pp. 173-82.
Kavita B, Limbachia J, Keharia H. Hexavalent chromium sorption by biomass of chromium tolerant Pythium sp. J Basic Microbiol. 2011;51(2):173-82.
Kavita, B., Limbachia, J., & Keharia, H. (2011). Hexavalent chromium sorption by biomass of chromium tolerant Pythium sp. Journal of Basic Microbiology, 51(2), 173-82. https://doi.org/10.1002/jobm.201000191
Kavita B, Limbachia J, Keharia H. Hexavalent Chromium Sorption By Biomass of Chromium Tolerant Pythium Sp. J Basic Microbiol. 2011;51(2):173-82. PubMed PMID: 21298678.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hexavalent chromium sorption by biomass of chromium tolerant Pythium sp. AU - Kavita,B, AU - Limbachia,Jayeshree, AU - Keharia,Haresh, Y1 - 2011/02/07/ PY - 2010/05/22/received PY - 2010/09/12/accepted PY - 2011/2/8/entrez PY - 2011/2/8/pubmed PY - 2011/8/10/medline SP - 173 EP - 82 JF - Journal of basic microbiology JO - J Basic Microbiol VL - 51 IS - 2 N2 - The removal of Cr(VI) from aqueous solutions by live and pretreated fungal biomass of Pythium sp was investigated in a batch mode. The influence of biomass dose, solution pH, initial metal ion concentration, temperature and pretreatment of biomass on biosorption efficiency was studied. The acid pretreated biomass adsorbed 1.7 times more hexavalent chromium in comparison to untreated biomass. The chromium removal rate increased with decrease in pH and increase in Cr(VI) concentration, biomass dose and temperature. The adsorption data was described well by Freundlich isotherm model. Evaluation of biosorption mechanism using infrared spectroscopy showed the involvement of positively charged amino groups in Cr(VI) biosorption. The biosorption of Cr(VI) by Pythium sp. followed second order kinetics, the biosorption process was found to be spontaneous and endothermic with high affinity of biomass for Cr(VI). SN - 1521-4028 UR - https://www.unboundmedicine.com/medline/citation/21298678/Hexavalent_chromium_sorption_by_biomass_of_chromium_tolerant_Pythium_sp_ L2 - https://doi.org/10.1002/jobm.201000191 DB - PRIME DP - Unbound Medicine ER -