Modeling and simulation of the continuous adsorption of cadmium (II) ion by Luffa Cylindrica biosorbent using CFD-RSM combined method
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Cadmium (II) is one of the most harmful heavy metal ions and its persistency in groundwater has been an increasing issue for decades. This study aims to evaluate the adsorption of Cd (II) by natural Luffa Cylindrica adsorbent using a computational fluid dynamics approach (CFD). After validation of the numerical results with the experimental data, the impact of bed length and porosity parameters on the adsorption rate was investigated. Furthermore, the impact of fluid flowrate, initial cadmium (II) concentration, bed length, and bed porosity was investigated using experimental design. Based on the optimization method, the optimum conditions were found to be initial concentration, 50 mg/L; flow rate, 10.612 mL/min; bed porosity, 0.66; and bed length, 14.51 cm. The maximum amount of cadmium ions adsorbed was 122.05 mg, and the maximum equilibrium adsorption capacity was 20.21 mg/g. The study showed that the increase in fluid flow rate and porosity led to a decrease in the amount of adsorption, while an increase in the initial concentration and length of the bed resulted in an increase in the amount of adsorption.
Keywords:
Language:
Persian
Published:
Journal of separation science and engineering, Volume:15 Issue: 1, 2023
Pages:
1 to 25
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