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Vol. 26 No. 23 (2014)

Copyright (c) 2014 Edison Munaf*, Zulfi Abdullah, Meilia Innes Kurniawan, Nazris Nazaruddin, Rahmiana Zein, Hermansyah Aziz

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A New Empirical Model for Heavy Metals Biosorption

https://doi.org/10.14233/ajchem.2014.17370
Edison Munaf*
Laboratory of Environmental Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia *Corresponding author: E-mail: emunaf@fmipa.unand.ac.id
Zulfi Abdullah
Laboratory of Environmental Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia *Corresponding author: E-mail: emunaf@fmipa.unand.ac.id
Meilia Innes Kurniawan
Laboratory of Environmental Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia *Corresponding author: E-mail: emunaf@fmipa.unand.ac.id
Nazris Nazaruddin
Laboratory of Environmental Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia *Corresponding author: E-mail: emunaf@fmipa.unand.ac.id
Rahmiana Zein
Laboratory of Environmental Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia *Corresponding author: E-mail: emunaf@fmipa.unand.ac.id
Hermansyah Aziz
Laboratory of Environmental Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia *Corresponding author: E-mail: emunaf@fmipa.unand.ac.id

Corresponding Author(s) : Edison Munaf*

Asian Journal of Chemistry, Vol. 26 No. 23 (2014)

Abstract

A new model based on an empirical approach is proposed to apply to the biosorption of heavy metals. This model is implemented for four sets of experimental data to study the effect of concentration of Cr(III), Cr(VI), Cd(II) and Zn(II) on the sorption capacity by Arenga pinnata fruit shell. Six conventional models namely, Langmuir, Freundlich, Sips, Toth, Redlich-Peterson and Khan have been used for the comparison of new model on the biosorption process. Coefficient determination of four consecutive data for the effect of concentration of Cr(III), Cr(VI), Cd(II) and Zn(II) calculated using Langmuir, Freundlich, Sips, Toth, Redlich-Peterson and Khanishoterm are 0.76629, 0.72368, 0.88256, 0.80818, 0.84782 and 0.31096, respectively. On the other hand, coefficient determination of a new model using a non-linear regression with Levenberg-Marquardt algorithmis 0.91792. This means that a new proposed model shows more better results compared with other conventional reference models.

Keywords

New emperical model Non-linear regression Arenga pinnata Biosorption isotherm Coefficient of determination.
Munaf*, E., Abdullah, Z., Innes Kurniawan, M., Nazaruddin, N., Zein, R., & Aziz, H. (2014). A New Empirical Model for Heavy Metals Biosorption. Asian Journal of Chemistry, 26(23), 8093–8097. https://doi.org/10.14233/ajchem.2014.17370
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