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Non-Equilibrium Multi-Ion Biosorption Isotherms for Removal of Heavy Metals from Drinking Water

Risha Jasmine Nathan , Risha Jasmine Nathan1 , Arvind Kumar Jain1 , Rhonda J. Rosengren

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Indian Journal of Forensic Medicine and Pathology 14(2 (Special Issue)):p 246-255, . | DOI: http://dx.doi.org/10.21088/ijfmp.0974.3383.14221.34
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Risha Jasmine Nathan. Non-Equilibrium
Multi-Ion Biosorption Isotherms for
Removal of Heavy Metals from Drinking
Water. Indian J Forensic Med Pathol.
2021;14(3 Special):246-255
 

Received : N/A         Accepted : N/A          Published : N/A
Abstract

Biosorption isotherms define the relationship between the biosorption capacity of the biosorbent and the equilibrium concentration of the ions in solution, at a constant temperature. Experiments are routinely performed under near-equilibrium because it is impossible to determine the exact time at which equilibrium was attained. A novel attempt to study multi-ion biosorption in non-equilibrium conditions has been made, based on the Probability Isotherm theory. Materials and Methods: Probability Isotherm theory was examined with cucumber and kiwifruit peel beads which are reported to be efficient biosorbents. Te peels were incubated in a cocktail of seven ions (As, Cd, Cr, Cu, Hg, Pb, and Ni) at the same initial concentration (0.1-15 mg-1) and four different temperatures (25-55°C). Non-equilibrium biosorption data were modeled by the Langmuir isotherm model. Data were analyzed using a one-way ANOVA coupled with a Bonferroni posthoc test on GraphPad Prism 8 software. Cd and Ni ions showed the most well-defined trends with the Langmuir isotherm model. The binding of ions was Physico-chemical with simultaneously occurring physisorption and chemisorption reactions. Conclusions: Probability Isotherm theory can be applied to multi-ion biosorption in non-equilibrium conditions. The behavior of each ion is unique and no two biosorption systems are alike.
 

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  • Risha Jasmine Nathan
    ,
  • Risha Jasmine Nathan1
    ,
  • Arvind Kumar Jain1
    ,
  • Rhonda J. Rosengren
    ,
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Cite this article

Risha Jasmine Nathan. Non-Equilibrium
Multi-Ion Biosorption Isotherms for
Removal of Heavy Metals from Drinking
Water. Indian J Forensic Med Pathol.
2021;14(3 Special):246-255
 

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DOI: http://dx.doi.org/10.21088/ijfmp.0974.3383.14221.34
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