Browsing by Author "Grey Rios, Ana Lizeth"
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Item Síntesis y caracterización de mezclas de carbón activado y bentonita para la remoción in-vitro de ketoconazol en aguas.(Universidad Santiago de Cali, 2025) Grey Rios, Ana Lizeth; Santibañez Soto, María Camila; Ciro Monsalve, Yhors Alexander (Director)Water contamination by pharmaceutical substances, such as ketoconazole, is a significant environmental challenge. In this study, the adsorption of ketoconazole on a mixture of activated carbon and bentonite in proportions of 100%, 80/20% and 50/50%, chemically activated with phosphoric acid (H₃PO₄) for 24 h and 1 h intervals, was evaluated. Then, the materials were characterized by Boehm titration, IR spectroscopy and zero charge point (pHZPC). The results showed that the 50/50% CA/BE mixture presented the highest adsorption of ketoconazole, with a removal of 59.5% ± 0.8 in UV spectrophotometry. In addition, statistical analysis (ANOVA and Tukey test) showed that 24 h activation with H₃PO₄ improved the adsorption. It is concluded from the study that the combination of activated carbon and bentonite improves the removal efficiency of ketoconazole in water, highlighting pHZPC as a key factor for adsorption.