Pollutants abatement in aqueous solutions with geopolymer catalysts: A photo fenton case.

Autor: Clausi M; Earth and Geoenvironmental Sciences Department, University of Bari, Via Orabona 4, 70125, Bari, Italy., Savino S; Chemistry Department, University of Bari, Via Orabona 4, 70125, Bari, Italy., Cangialosi F; T & A - Tecnologia e Ambiente srl, 70017, Putignano, BA, Italy., Eramo G; Earth and Geoenvironmental Sciences Department, University of Bari, Via Orabona 4, 70125, Bari, Italy., Fornaro A; Lab Service Analytica S.R.L., Via Emilia, 51/C, 40011, Anzola dell'Emilia, Italy., Quatraro L; T & A - Tecnologia e Ambiente srl, 70017, Putignano, BA, Italy., Pinto D; Earth and Geoenvironmental Sciences Department, University of Bari, Via Orabona 4, 70125, Bari, Italy. Electronic address: daniela.pinto@uniba.it., D'Accolti L; Chemistry Department, University of Bari, Via Orabona 4, 70125, Bari, Italy; CSGI -Center for Colloid and Surface Science Zona Osmannoro, Via della Lastruccia, 3, 50019, Zona Osmannoro, FI, Italy. Electronic address: lucia.daccolti@uniba.it.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2023 Dec; Vol. 344, pp. 140333. Date of Electronic Publication: 2023 Oct 07.
DOI: 10.1016/j.chemosphere.2023.140333
Abstrakt: Environmental pollution is a serious threat to human health and the natural environment, and it has aroused widespread concern. One of the most effective processes in the removal of pollutants from wastewater is the Fenton reaction. This process is based on the production of highly reactive •OH radicals due to the rapid reaction between Iron ions and hydrogen peroxide under acidic conditions. The hydroxyl radical has a high oxidation potential of E°(•OH/H 2 O) = 2.8 V/SHE at acidic pH, so they are extremely reactive and non-selective oxidizing agent towards organic contaminants in wastewater. In order to avoid the drawbacks of a standard Fenton reaction, a photo Fenton reaction has been tested working at neutral pH in water in the removal of refractory pollutants. For the first time, a heterogeneous system was experimented, impregnating porous metakaolin-based geopolymers, obtained by using hydrogen peroxide and vegetable oil in different ratios, as foaming agents, with iron working as photocatalyst. The dirty wastewater as scrubber water (SCRW) and liquid fraction of digestate (LFD) were tested obtaining 40-90% abatement of Total Carbon Content.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Lucia D'Accolti, Daniela Pinto, Antonio Fornaro, Federico Cangialosi reports financial support was provided by Ministry of the Environment and Energy Safety.
(Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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