Efficiency of Rice Husk for Removal of Cu(II) and Zn(II) Ions from Aqueous Solution
Science Journal of Analytical Chemistry
Volume 5, Issue 5, September 2017, Pages: 66-71
Received: Jun. 23, 2016;
Accepted: Jul. 4, 2016;
Published: Oct. 11, 2017
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Belete Geremew, Department of Chemistry, School of Natural Science, Madda Walabu University, Bale-Robe, Ethiopia
Tesfahun Kebede, Department of Chemistry, College of Natural and Computational Science, Haramaya University, Haromaya, Ethiopia
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In the present study the adsorption of Cu(II) and Zn(II) ions on rice husk from artificially prepared aqueous solutions of these metal ions was investigated following the batch mode adsorption procedure. Accordingly, the effects of operating parameters such as pH, contact time, and initial concentration of metal ion solution were evaluated. The results so obtained in this study indicated that the optimum conditions for the Cu(II) and Zn(II) ions adsorption were found to be as follows: pH of 6 and 7; contact times of 100 and 125 minutes; and these values were actually determined by setting the initial concentration of 50mg/L for each metal ion solution. Upon measurements of the residual metal ion concentration using FAAS method, the percent adsorption of both Cu(II) and Zn(II) ions showed significant increase with an increase in each case of the contact time. Furthermore, it was evidently implicated that the binding process of the metal ions on the adsorbent (rice husk) could be affected by change in the pH of both metal ion solutions. In addition the experimental data were analyzed against both Langmuir and Freundlich isotherm for determining the maximum adsorption capacity of the title biosorbent with respect to each of the tested metal ions. The adsorption maxima were calculated on the basis the Langmuir isotherm and found to be 1.93 and 12.98 mg/g for Cu(II) and Zn(II) metal ions respectively. These values were suggested that the rice husk investigated in this study can have a good application potential for the removal of both metal ions (Cu(II) and Zn(II)) from aqueous solutions. In fact, the goal of this work was to develop an inexpensive, highly available, effective metal ion adsorbent from natural waste as alternative to existing commercial adsorbents.
Adsorption Efficiency, Adsorption Isotherm, Batch Adsorption, Copper, Rice Husk, Zinc
To cite this article
Efficiency of Rice Husk for Removal of Cu(II) and Zn(II) Ions from Aqueous Solution, Science Journal of Analytical Chemistry.
Vol. 5, No. 5,
2017, pp. 66-71.
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Stratton, G. W., 1987. Review in Environmental Toxicology. Elsevier, Amsterdam. 56: 85-94
Mehmet, E., D. Sukru, O. Celalettin and K. Mustafa, 2007. Heavy metal adsorption by modified oak sawdust: Thermodynamic sand kinetics. J. Hazardous Materials, 141(1): 77-85
Gabaldon, C., P. Marzaland, A. Seco, 1996. Cadmium and zinc adsorption onto activated carbon: influence of temperature, pH and metal/carbon ratio. J. Chem. Technol. Biotechnol. 66: 279–285
Ahalya, N., T. Ramachandra and D. Kanamadi, 2005. Biosorption of chromium(VI) from aqueous solutions by the husk of bengalgram (Cicerarientinum). Electronic J. Biotechnology, 99: 13-15
Norton, K., 2004. Biosorption of zinc from aqueous solutions using biosolids. Adv. Environ. Res. 8: 629–635
Esteghlalian, A., A. Hashimoto, J. Fenske and M. Penner, 1997. Modeling and optimization of the dilute-sulfuric-acid pretreatment of corns over, poplar and switch grass. Bioresour. Technol. 5: 129-136
Gordon, E., J. Brown and D. John, 1999. Mineral surfaces and bioavailability of heavy metals: A molecular-scale perspective. J. proc Natl Acad. Sci. USA. 96(7): 3388-3395
Nadeem, F., N. Ramzan, A. Khan and I. Iqbal, 2010. Kinetic and equilibrium studies for Zn(II) and Cu(II) metal ions removal using biomass ash. J. Chem. Soc. Pak. 33(2): 139
Taty-Costodes, V. C., H. Fauduet, C. Porte and A. Delacroixs, 2003. Removal of Cd(II) and Pb(II) ions from aqueous solutions by adsorption onto sawdust of Pinus Sylvestris. J. Hazardous Materials, 105(1-3): 121-142
Ragheb, S. M., 2007. Recovery of heavy metals from wastewater using low-cost adsorbents. Cairo University. J. Adv. 2(4): 297-303
Langmuir, I., 1918. The constitution and fundamental properties of solids and liquids. J. Am. Chem. Soc. 38: 2221-2295
Freundlich, H., 1906. Ueberdie Adsorption in Loesungen. Z. phys. Chem. 57: 385-470