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Biosorption Potential of Bacillus salmalaya Strain 139SI for Removal of Cr(VI) from Aqueous Solution

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  • Arezoo Dadrasnia

    (Department of Biohealth Science, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia)

  • Kelvin Swee Chuan Wei

    (Department of Biohealth Science, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia)

  • Nasser Shahsavari

    (Department of Biological Science, College of Agricultural and Environmental Engineering, Islamic Azad University, Hajiabad Branch, Hormozgan 55773, Iran)

  • Mohd Sofian Azirun

    (Institute of Biological Sciences, Faculty of Science, University Malaya, 50603 Kuala Lumpur, Malaysia)

  • Salmah Ismail

    (Department of Biohealth Science, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia)

Abstract

The present study investigated the biosorption capacity of live and dead cells of a novel Bacillus strain for chromium. The optimum biosorption condition was evaluated in various analytical parameters, including initial concentration of chromium, pH, and contact time. The Langmuir isotherm model showed an enhanced fit to the equilibrium data. Live and dead biomasses followed the monolayer biosorption of the active surface sites. The maximum biosorption capacity was 20.35 mg/g at 25 °C, with pH 3 and contact time of 50 min. Strain 139SI was an excellent host to the hexavalent chromium. The biosorption kinetics of chromium in the dead and live cells of Bacillus salmalaya ( B. salmalaya ) 139SI followed the pseudo second-order mechanism. Scanning electron microscopy and fourier transform infrared indicated significant influence of the dead cells on the biosorption of chromium based on cell morphological changes. Approximately 92% and 70% desorption efficiencies were achieved using dead and live cells, respectively. These findings demonstrated the high sorption capacity of dead biomasses of B. salmalaya 139SI in the biosorption process. Thermodynamic evaluation (ΔG 0 , ΔH 0 , and ΔS 0 ) indicated that the mechanism of Cr(VI) adsorption is endothermic; that is, chemisorption. Results indicated that chromium accumulation occurred in the cell wall of B. salmalaya 139SI rather than intracellular accumulation.

Suggested Citation

  • Arezoo Dadrasnia & Kelvin Swee Chuan Wei & Nasser Shahsavari & Mohd Sofian Azirun & Salmah Ismail, 2015. "Biosorption Potential of Bacillus salmalaya Strain 139SI for Removal of Cr(VI) from Aqueous Solution," IJERPH, MDPI, vol. 12(12), pages 1-18, December.
    • Handle: RePEc:gam:jijerp:v:12:y:2015:i:12:p:14985-15338:d:59881
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    References listed on IDEAS

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    1. Arezoo Dadrasnia & Salmah Ismail, 2015. "Biosurfactant Production by Bacillus salmalaya for Lubricating Oil Solubilization and Biodegradation," IJERPH, MDPI, vol. 12(8), pages 1-16, August.
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    Cited by:

    1. Thaisa Caroline Andrade Siqueira & Isabella Zanette da Silva & Andressa Jenifer Rubio & Rosângela Bergamasco & Francielli Gasparotto & Edneia Aparecida de Souza Paccola & Natália Ueda Yamaguchi, 2020. "Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics," IJERPH, MDPI, vol. 17(2), pages 1-13, January.
    2. Shanewaz Hossan & Saddam Hossain & Mohammad Rafiqul Islam & Mir Himayet Kabir & Sobur Ali & Md Shafiqul Islam & Khan Mohammad Imran & M. Moniruzzaman & Taslin Jahan Mou & Anowar Khasru Parvez & Zahid , 2020. "Bioremediation of Hexavalent Chromium by Chromium Resistant Bacteria Reduces Phytotoxicity," IJERPH, MDPI, vol. 17(17), pages 1-19, August.

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