A Novel Catalytic Process for Degradation of Bisphenol A in Aqueous Solutions Using Fe Supported on Alginate/Carboxymeth
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A Novel Catalytic Process for Degradation of Bisphenol A in Aqueous Solutions Using Fe Supported on Alginate/Carboxymethylcellulose Diego da Silva Bezerra1 · Rodrigo José França1 · Mônica Regina da Costa Marques1 Received: 13 July 2020 / Accepted: 22 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract 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. Graphic Abstract
Keywords Heterogeneous Fenton · Advanced oxidation processes · POP Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10562-020-03403-9) contains supplementary material, which is available to authorized users. * Mônica Regina da Costa Marques [email protected] 1
Chemistry Institute, Rio de Janeiro State University, Rio de Janeiro 20550‑900, Brazil
1 Introduction O Bisphenol A (BPA) is one of the most common organic compounds found in water bodies despite its high toxicity, even at very low concentrations [1–4]. BPA is a compound produced on a large scale because it is used in the synthesis
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of polycarbonates and epoxy resins [5, 6]. In addition to the potential harmful effects on vital organs, such as the liver and heart, BPA also has estrogenic activity. As conventional technologies fail to remove persistent organic pollutants, such as BPA, there is an urgent need to develop new technologies capable of efficiently removing it from effluents [4, 5]. In this context, advanced oxidative processes (AOPs) have attracted strong interest from the scientific and industrial communities. AOPs are defined as processes based on the formation of a highly oxidizing hydroxyl radical (·OH), capable of causing complete mineralization of several organic compounds. The hydroxyl radical is usually formed from the combination of oxidizing agents, such as ozone or hydrogen peroxide, in the presence of metallic catalysts and/or ultraviolet radiation. Among the most studied AOPs
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