Modeling of Co-Cu Elution From Clinoptilolite using Neural Network

Authors: John Kabuba, Antoine Mulaba-Bafubiandi

Abstract:

The elution process for the removal of Co and Cu from clinoptilolite as an ion-exchanger was investigated using three parameters: bed volume, pH and contact time. The present paper study has shown quantitatively that acid concentration has a significant effect on the elution process. The favorable eluant concentration was found to be 2 M HCl and 2 M H2SO4, respectively. The multi-component equilibrium relationship in the process can be very complex, and perhaps ill-defined. In such circumstances, it is preferable to use a non-parametric technique such as Neural Network to represent such an equilibrium relationship.

Keywords: Clinoptilolite, elution, modeling, neural network.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1084528

References:

[1] J. Warchol, R. Petrus, "modeling of heavy metal removal dynamics in clinoptilolite packed beds," Microporous and Mesoporous Materials. vol. 93, 2006, pp. 29-39.
[2] S. Kesraoui-Ouki, C.R. Cheeseman, R. Perry, "Natural Zeolite utilization in pollution control: A review of applications to metals effluents," J. Chem.Tech. Biotechnol. vol. 59, 1994, pp.121-126.
[3] S.E. Bailey, T.J.Olin, M. Bricka, D. Dean, "A review of potentially lowcost sorbents for heavy metals," Water Res. vol. 33, 1999, pp.2469- 2479.
[4] B.B. Mamba, D.W. Nyembe and A.F. Mulaba-Bafubiandi " Removal of copper and cobalt from aqueous solutions using natural clinoptilolite", Water SA , vol. 35, 2009, pp. 307-314.
[5] S. Haykyn, Neural Networks, A Comprehensive Foundantion, Prentice Hall, India, 2003.
[6] K. Hornik, M. Stinchcombe, H. White, "Multilayer feedforward networks are universal approximators". Neural Network. vol. 2, 1989, pp.359-366.
[7] M.S. Bhatti, D. Kapoor, R. K. Kalia, A.S. Reddy, A.K. Thukral, " RSM and ANN modeling for electrocoagulation of copper from simulated wastewater: Multi objective optimization using genetic algorithm approach" Desalination. vol. 274, 2011, pp.74-80.
[8] M.S. Lee, M.J. Nicol, "Removal of iron from cobalt sulfate solutions by ion excahneg with Diphonix resin and enhancement of iron elution ith titanium (III)" Hydrometallurgy. vol.86, 2007, pp.6-12.
[9] P.A Riveros, " The removal of antimony from copper electrolytes using amino-phosphonic resins: Improving the elution of pentavalent antimony", Hydrometallurgy, vol.105, 2010, pp. 110-114
[10] J.S.J. Van Deventer, L. Lorenzer, P.F. Van der Merwe, D.W. Morrison & Van der Westhuysen, " The Fundamentals of unit operations in CIP plants: A progress report" Minerals Engineering, vol. 7, 1994, pp.265- 278.
[11] P.F. Fundamentals of the elution of gold cyanide from activated carbon, PhD Thesis, University of Stellenbosch, South Africa, 1991, 453.
[12] F.P. De Kook & J.S.J. Van Deventer, "The modeling of competitive sorption equilibria using statistical thermodynamics" Minerals Engineering, vol. 8, 1995, pp.473-493.