A Novel Catalytic Process for Degradation of Bisphenol A in Aqueous Solutions Using Fe Supported on Alginate/Carboxymethylcellulose

This work aimed to synthesize new heterogeneous iron-based catalysts supported on biopolymers (alginate (Alg), carboxymethylcellulose (CMC), xanthan gum (GX) and chitosan (Qui)) and their mixtures-and their mixtures-to evaluate their degradation Bisphenol A (BPA) in aqueous solutions. The Alg-Fe, QuiGa-Fe and CMC-Fe, CMCGX-Fe, AlgCMC-Fe, AlgGX-Fe catalysts were prepared and characterized by SEM, FTIR and FAAS. For the degradation of BPA was evaluated and AlgCMC-Fe was considered the best catalyst for having high catalytic activity and less leaching of iron ions in the reaction medium. Then, the kinetics of BPA degradation by Fenton oxidation process were investigated varying: H2O2 concentration, AlgCMC-Fe content, pH, reaction time and initial BPA concentrations. The degradation of BPA was monitored by HPLC-DAD and the results showed that AlgCMC-Fe were able to promote total degradation of BPA in aqueous solutions a (2.00 mg L-1 BPA) at a pH close to neutral, with a recycling capacity of up to three times with the same efficiency. The pseudo-second-order was the most appropriate model to describe the kinetic mechanism. [GRAPHICS] .