Evaluation of Process Influencing Factors, Degradation Products, Toxicity Evolution and Matrix-Related Effects during Electro-Fenton Removal of Piroxicam from Waters

Feng, Ling and Serna Galvis, Efrain A. and Oturan, Nihal and Giannakis, Stefanos and Torres Palma, Ricardo and Oturac, Mehmet A. (2019). Evaluation of Process Influencing Factors, Degradation Products, Toxicity Evolution and Matrix-Related Effects during Electro-Fenton Removal of Piroxicam from Waters. "Journal of Environmental Chemical Engineering", v. 7 (n. 5); pp. 1-8. ISSN 2213-3437. https://doi.org/10.1016/j.jece.2019.103400.

Description

Title: Evaluation of Process Influencing Factors, Degradation Products, Toxicity Evolution and Matrix-Related Effects during Electro-Fenton Removal of Piroxicam from Waters
Author/s:
  • Feng, Ling
  • Serna Galvis, Efrain A.
  • Oturan, Nihal
  • Giannakis, Stefanos
  • Torres Palma, Ricardo
  • Oturac, Mehmet A.
Item Type: Article
Título de Revista/Publicación: Journal of Environmental Chemical Engineering
Date: October 2019
ISSN: 2213-3437
Volume: 7
Subjects:
Freetext Keywords: Electro-Fenton, Piroxicam, Toxicity Evolution, Hospital Wastewater, Urine
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Hidráulica, Energía y Medio Ambiente
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The degradation kinetics, the operational influencing factors, the determination of short-chain organic by-pro-ducts, the mineralization degree, the evolution of residual toxicity, as well as the treatment of complex matriceswere systematically investigated on removal of piroxicam by Electro-Fenton process (EF), due to its persistenceand low removal in water matrices. The second order reaction rate constant between piroxicam and hydroxylradical (•OH) was determined as (2.19 ± 0.01) × 109M−1s−1. It was found that the process was able to almostcompletely mineralize 0.08 mM piroxicam solution (92% TOC removal) at 6 h treatment. Based on identificationof short-chain carboxylic acids, released inorganic ions and the removal of total organic carbon, a schematicproposal of piroxicam degradation by EF treatment was done. The evolution of the acute toxicity of treatedpiroxicam solution was monitored by Microtox method, showing a significant toxicity reduction at 180 mintreatment. Remarkably, piroxicam in simulated urine and hospital wastewater was completely degraded after120 min of EF treatment. Therefore, the results indicate that the tested EF process constitutes an efficient optionfor the elimination of piroxicam in aqueous media.

More information

Item ID: 63236
DC Identifier: http://oa.upm.es/63236/
OAI Identifier: oai:oa.upm.es:63236
DOI: 10.1016/j.jece.2019.103400
Official URL: https://www.sciencedirect.com/science/article/abs/pii/S2213343719305238?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 07 Aug 2020 14:58
Last Modified: 07 Aug 2020 14:58
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