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Biosorption of Cr(VI) from water using biomass of Aeromonas hydrophila: central composite design for optimization of process variables.
Appl Biochem Biotechnol. 2009 Sep; 158(3):524-39.AB

Abstract

The potential use of biomass of Aeromonas hydrophila for biosorption of chromium from aqueous solution was investigated. The variables (pH, initial Cr(VI) concentration, biomass dose, and temperature) affecting process were optimized by performing minimum number of experimental runs with the help of central composite design. The results predicted by design were found to be in good agreement (R2 = 99.1%) with those obtained by performing experiments. Multiple regression analysis shows that uptake decreases with increase in pH and biomass dose, whereas it increases with increase in temperature and concentration. The maximum removal of Cr(VI) predicted by contour and optimization plots was 184.943 mg/g at pH 1.5, initial Cr(VI) concentration 311.97 mg/L, temperature 60 degrees C, and biomass dose 1.0 g. The removal of Cr(VI) was governed by adsorption of Cr(VI) as well as its reduction into Cr(III), which further gets adsorbed. The sorption capacity of biomass was calculated from experimental data using Langmuir sorption model and was found to be 151.50 mg/g at 40 degrees C and pH 1.5, which is comparable to other biosorbents. In addition to this, Dubinin-Radushkevich model was applied, and it was found that nature of sorption was chemisorption.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Ranjan D
Water Pollution Research Laboratory, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India.
Srivastava P
No affiliation info available
Talat M
No affiliation info available
Hasan SH
No affiliation info available

MeSH

AdsorptionAeromonas hydrophilaBiomassChromiumHydrogen-Ion ConcentrationRegression AnalysisWater Pollutants, ChemicalWater Purification

Pub Type(s)

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

Language

eng

PubMed ID

19031053

Citation

Ranjan, D, et al. "Biosorption of Cr(VI) From Water Using Biomass of Aeromonas Hydrophila: Central Composite Design for Optimization of Process Variables." Applied Biochemistry and Biotechnology, vol. 158, no. 3, 2009, pp. 524-39.
Ranjan D, Srivastava P, Talat M, et al. Biosorption of Cr(VI) from water using biomass of Aeromonas hydrophila: central composite design for optimization of process variables. Appl Biochem Biotechnol. 2009;158(3):524-39.
Ranjan, D., Srivastava, P., Talat, M., & Hasan, S. H. (2009). Biosorption of Cr(VI) from water using biomass of Aeromonas hydrophila: central composite design for optimization of process variables. Applied Biochemistry and Biotechnology, 158(3), 524-39. https://doi.org/10.1007/s12010-008-8404-z
Ranjan D, et al. Biosorption of Cr(VI) From Water Using Biomass of Aeromonas Hydrophila: Central Composite Design for Optimization of Process Variables. Appl Biochem Biotechnol. 2009;158(3):524-39. PubMed PMID: 19031053.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biosorption of Cr(VI) from water using biomass of Aeromonas hydrophila: central composite design for optimization of process variables. AU - Ranjan,D, AU - Srivastava,P, AU - Talat,M, AU - Hasan,S H, Y1 - 2008/11/20/ PY - 2008/06/13/received PY - 2008/10/20/accepted PY - 2008/11/26/pubmed PY - 2010/6/30/medline PY - 2008/11/26/entrez SP - 524 EP - 39 JF - Applied biochemistry and biotechnology JO - Appl Biochem Biotechnol VL - 158 IS - 3 N2 - The potential use of biomass of Aeromonas hydrophila for biosorption of chromium from aqueous solution was investigated. The variables (pH, initial Cr(VI) concentration, biomass dose, and temperature) affecting process were optimized by performing minimum number of experimental runs with the help of central composite design. The results predicted by design were found to be in good agreement (R2 = 99.1%) with those obtained by performing experiments. Multiple regression analysis shows that uptake decreases with increase in pH and biomass dose, whereas it increases with increase in temperature and concentration. The maximum removal of Cr(VI) predicted by contour and optimization plots was 184.943 mg/g at pH 1.5, initial Cr(VI) concentration 311.97 mg/L, temperature 60 degrees C, and biomass dose 1.0 g. The removal of Cr(VI) was governed by adsorption of Cr(VI) as well as its reduction into Cr(III), which further gets adsorbed. The sorption capacity of biomass was calculated from experimental data using Langmuir sorption model and was found to be 151.50 mg/g at 40 degrees C and pH 1.5, which is comparable to other biosorbents. In addition to this, Dubinin-Radushkevich model was applied, and it was found that nature of sorption was chemisorption. SN - 1559-0291 UR - https://www.unboundmedicine.com/medline/citation/19031053/Biosorption_of_Cr_VI__from_water_using_biomass_of_Aeromonas_hydrophila:_central_composite_design_for_optimization_of_process_variables_ L2 - https://dx.doi.org/10.1007/s12010-008-8404-z DB - PRIME DP - Unbound Medicine ER -