Optimization of Adsorption Isotherms by Simulated Annealing
DOI:
https://doi.org/10.33571/rpolitec.v19n38a2Keywords:
adsorption, isoterma, activated carbonAbstract
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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