Optimización de Isotermas de adsorción mediante Simulated Annealing

Jorge Pellegrini; Jorge de Celis

doi:10.33571/rpolitec.v19n38a2

Authors

Jorge Pellegrini Universidad Tecnológica Nacional. https://orcid.org/0000-0003-0526-7743
Jorge de Celis Universidad Tecnológica Nacional sede Avellaneda https://orcid.org/0000-0001-5036-2710

DOI:

https://doi.org/10.33571/rpolitec.v19n38a2

Keywords:

adsorption, isoterma, activated carbon

Abstract

The present work studies the adjustment of the experimental data of the adsorption isotherms in a system of hexavalent chromium as adsorbate and activated carbon as adsorbent. The adsorption tests consisted of using 0.1 gram of adsorbent with solutions of different concentrations of hexavalent chromium for 48 h at different temperatures. For the modeling, a method different from the traditional one was proposed, where the adsorption activation energy is optimized to generate the equilibrium constants that minimize the mean square error with respect to the experimental data. For this, Simulated Annealing was used as the optimization algorithm. An initial temperature of 1,000, 10,000 iterations, and a step size of 0.05 were the parameters used. Both methods present adequate adjustments, showing activation energies of the same order. This would indicate that the optimization algorithm would be comparable to traditional procedures.

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