Sorption of Bisphenol A (BPA) in Aqueous Solutions on Fullerene C60

摘要

The important applications of engineered carbon nanomaterials in the last years represent the cause of their presence in the aquatic environment. The properties and on the composition of the aqueous solutions, will influence the distribution and the availability of fullerene (nC60) as a sorbent, in different aqueous environmental media. In this study, the adsorption of bisphenol A (BPA) from aqueous solutions on fullerene C60 was investigated in batch experiments. The kinetic, the isotherm and the thermodynamic of the reactions were determined. According to the Langmuir model, the maximum sorption capacity of BPA by the fullerene C60 in the studied systems was of 74.44 mg/g, at 20 °C, being observed that it varies by the temperature. The kinetic data were better described by the intra-particle diffusion model in the optimum range of pH values between 7 and 9.