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Evaluation of transformation products from chemical oxidation of micropollutants in wastewater by photoassisted generation of sulfate radicals.
Chemosphere. 2019 Jul; 226:509-519.C

Abstract

In this research, the degradation of seven different micropollutants (MPs) and the formation of their transformation products (TPs) have been assessed during the application of different advanced oxidation processes: photolytic and photocatalytic activation of peroxymonosulfate (PMS) and persulfate (PS). The results were compared with those obtained from the photolytic experiments using hydrogen peroxide (H2O2) as oxidant. A significant abatement of almost all MPs was achieved, even with very low UV-C contact time (9 and 28 s). The degradation of atenolol (ATN) and caffeine (CFN) ranged from 84 to 100% with a dose of 0.5 mM of any oxidant. The efficiencies for bisphenol-A (BPA), carbamazepine (CBZ), diclofenac (DCF), ibuprofen (IBP), and sulfamethoxazole (SMX) varied depending on the oxidation system and operating conditions (oxidant dose and UV-C contact time), leading to the photolysis of PMS to higher efficiencies than PS and H2O2. In all cases, the abatement of MPs ranged from 63 to 83%, even with the lowest PMS dosage. Moreover, the addition of Fe(II) as a catalyst enhanced the removal efficiency, reaching almost total removal, especially over CBZ, DCF, and IBP. The Dissolved Organic Carbon (DOC) removal ranged between 44 and 62%, suggesting the transformation of MPs in intermediate compounds. The identification of transformation products was carried out for each micropollutant and each oxidation treatment, being observed some transformation products specific of oxidation by sulfate radicals. For example, m/z 165.0432 only appeared after PMS/Fe(II)/UV-C on the degradation of BFA, m/z 251.082 appeared after photolytic activation of PMS and PS on CBZ removal, and m/z 128.0452 was observed after any sulfate radical oxidation treatment, but not after photolysis of H2O2.

Authors+Show Affiliations

Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933, Móstoles, Madrid, Spain; Department of Industrial Chemical & Environmental Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/ José Gutiérrez Abascal 2, 28006, Madrid, Spain.Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933, Móstoles, Madrid, Spain.Department of Chemistry, University of Torino, via P. Giuria 5, 10125, Torino, Italy.Department of Innovation & Technology, FCC Aqualia, S.A., C/ Montesinos 28, 06002, Badajoz, Spain.Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, 10125, Torino, Italy.Department of Chemistry, University of Torino, via P. Giuria 5, 10125, Torino, Italy.Department of Chemistry, University of Torino, via P. Giuria 5, 10125, Torino, Italy.Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933, Móstoles, Madrid, Spain. Electronic address: javier.marugan@urjc.es.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30953896

Citation

Rodríguez-Chueca, Jorge, et al. "Evaluation of Transformation Products From Chemical Oxidation of Micropollutants in Wastewater By Photoassisted Generation of Sulfate Radicals." Chemosphere, vol. 226, 2019, pp. 509-519.
Rodríguez-Chueca J, Garcia-Cañibano C, Sarro M, et al. Evaluation of transformation products from chemical oxidation of micropollutants in wastewater by photoassisted generation of sulfate radicals. Chemosphere. 2019;226:509-519.
Rodríguez-Chueca, J., Garcia-Cañibano, C., Sarro, M., Encinas, Á., Medana, C., Fabbri, D., Calza, P., & Marugán, J. (2019). Evaluation of transformation products from chemical oxidation of micropollutants in wastewater by photoassisted generation of sulfate radicals. Chemosphere, 226, 509-519. https://doi.org/10.1016/j.chemosphere.2019.03.152
Rodríguez-Chueca J, et al. Evaluation of Transformation Products From Chemical Oxidation of Micropollutants in Wastewater By Photoassisted Generation of Sulfate Radicals. Chemosphere. 2019;226:509-519. PubMed PMID: 30953896.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of transformation products from chemical oxidation of micropollutants in wastewater by photoassisted generation of sulfate radicals. AU - Rodríguez-Chueca,Jorge, AU - Garcia-Cañibano,Carmen, AU - Sarro,Marco, AU - Encinas,Ángel, AU - Medana,Claudio, AU - Fabbri,Debora, AU - Calza,Paola, AU - Marugán,Javier, Y1 - 2019/03/28/ PY - 2018/12/06/received PY - 2019/03/11/revised PY - 2019/03/22/accepted PY - 2019/4/7/pubmed PY - 2019/6/27/medline PY - 2019/4/7/entrez KW - Mechanisms KW - Micropollutants KW - Sulfate radicals KW - Transformation products KW - UV-C radiation SP - 509 EP - 519 JF - Chemosphere JO - Chemosphere VL - 226 N2 - In this research, the degradation of seven different micropollutants (MPs) and the formation of their transformation products (TPs) have been assessed during the application of different advanced oxidation processes: photolytic and photocatalytic activation of peroxymonosulfate (PMS) and persulfate (PS). The results were compared with those obtained from the photolytic experiments using hydrogen peroxide (H2O2) as oxidant. A significant abatement of almost all MPs was achieved, even with very low UV-C contact time (9 and 28 s). The degradation of atenolol (ATN) and caffeine (CFN) ranged from 84 to 100% with a dose of 0.5 mM of any oxidant. The efficiencies for bisphenol-A (BPA), carbamazepine (CBZ), diclofenac (DCF), ibuprofen (IBP), and sulfamethoxazole (SMX) varied depending on the oxidation system and operating conditions (oxidant dose and UV-C contact time), leading to the photolysis of PMS to higher efficiencies than PS and H2O2. In all cases, the abatement of MPs ranged from 63 to 83%, even with the lowest PMS dosage. Moreover, the addition of Fe(II) as a catalyst enhanced the removal efficiency, reaching almost total removal, especially over CBZ, DCF, and IBP. The Dissolved Organic Carbon (DOC) removal ranged between 44 and 62%, suggesting the transformation of MPs in intermediate compounds. The identification of transformation products was carried out for each micropollutant and each oxidation treatment, being observed some transformation products specific of oxidation by sulfate radicals. For example, m/z 165.0432 only appeared after PMS/Fe(II)/UV-C on the degradation of BFA, m/z 251.082 appeared after photolytic activation of PMS and PS on CBZ removal, and m/z 128.0452 was observed after any sulfate radical oxidation treatment, but not after photolysis of H2O2. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30953896/Evaluation_of_transformation_products_from_chemical_oxidation_of_micropollutants_in_wastewater_by_photoassisted_generation_of_sulfate_radicals_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(19)30598-3 DB - PRIME DP - Unbound Medicine ER -