Ponente
Descripción
The increasing use of cytostatics in cancer therapy has become a serious environmental problem due to their high toxicity, even at low concentrations. For this reason, new antitumor agents, containing an endogenous metal, as is the case of Cu(II) complexes, have been studied. Various sorbent materials have been used to remove these contaminants in wastewater. However, these sorbents present some difficulties related to waste management and have a high cost.
In recent years, superparamagnetic iron oxide nanomaterials (SPION) have been extensively studied. In addition, it is known that cellulose is an ideal dispersive medium for these nanoparticles. In this study we use the Metalsorb® sponge-loaded SPION. This sponge has an affinity for dissolved heavy metals. Therefore, it has been used as a sorbent material. The objective of this work was to optimize the conditions for the thermosorption / desorption of trans-[CuCl2(NH3)2] in the sponge loaded SPION.
The best results were obtained for pH 8, solution volume of 10 mL, sorbent mass of 10 mg (m/V = 1 g L-1) and a contact time of 10 minutes. The experimental data was fitted to kinetic models for 25 and 70 °C. The adsorption isotherms were adjusted to theoretical models under these conditions, obtaining a maximum capacity of 97.8 mg / g meaning a 99.7% sorption.
