Degradation of pharmaceuticals in different water matrices by a solar homo/heterogeneous photo-Fenton process over modified alginate spheres
| Autor: | Carla Sirtori, Débora Salmoria Araújo, Alexsandro Dallegrave, Vladimir Lavayen, Elisabeth Cuervo Lumbaque, Raquel W. Becker, Tiago Ost Fracari |
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| Rok vydání: | 2018 |
| Předmět: |
Alginates
Health Toxicology and Mutagenesis Iron 010501 environmental sciences Wastewater Mass spectrometry 01 natural sciences Ferric Compounds Waste Disposal Fluid Water Purification chemistry.chemical_compound Environmental Chemistry Hydrogen peroxide 0105 earth and related environmental sciences Chemistry General Medicine Hydrogen Peroxide Biodegradation Pollution Biodegradation Environmental Distilled water Chemical engineering Pharmaceutical Preparations Scientific method Sunlight Degradation (geology) SPHERES Water Pollutants Chemical Chromatography Liquid |
| Zdroj: | Environmental science and pollution research international. 26(7) |
| ISSN: | 1614-7499 |
| Popis: | A solar homo/heterogeneous photo-Fenton process using five materials (Fe(II), Fe(III), mining waste, Fe(II)/mining waste, and Fe(III)/mining waste) supported on sodium alginate was used as a strategy to iron dosage for the degradation of eight pharmaceuticals in three different water matrices (distilled water, simulated wastewater, and hospital wastewater). Experiments were carried out in a photoreactor with a capacity of 1 L, using 3 g of iron-alginate spheres and an initial hydrogen peroxide concentration of 25 mg L−1, at pH 5.0. All the materials prepared were characterized by different techniques. The Fe(III)-alginate spheres presented the best pharmaceutical degradation after a treatment time of 116 min. Nineteen transformation products generated during the solar photo-Fenton process were identified by liquid chromatography coupled to quadrupole time-of-flight mass spectrometry, using a purpose-built database developed for detecting these transformation products. Finally, the transformation products identified were classified according to their toxicity and predicted biodegradability. |
| Databáze: | OpenAIRE |
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