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Removal of diethyl phthalate from water solution by adsorption, photo-oxidation, ozonation and advanced oxidation process (UV/H₂O₂, O₃/H₂O₂ and O₃/activated carbon).
Sci Total Environ. 2013 Jan 01; 442:26-35.ST

Abstract

The objective of this work was to compare the effectiveness of conventional technologies (adsorption on activated carbon, AC, and ozonation) and technologies based on advanced oxidation processes, AOPs, (UV/H(2)O(2), O(3)/AC, O(3)/H(2)O(2)) to remove phthalates from aqueous solution (ultrapure water, surface water and wastewater). Diethyl phthalate (DEP) was chosen as a model pollutant because of its high water solubility (1,080 mg/L at 293 K) and toxicity. The activated carbons showed a high adsorption capacity to adsorb DEP in aqueous solution (up to 858 mg/g), besides the adsorption mechanism of DEP on activated carbon is governed by dispersive interactions between π electrons of its aromatic ring with π electrons of the carbon graphene planes. The photodegration process showed that the pH solution does not significantly affect the degradation kinetics of DEP and the first-order kinetic model satisfactorily fitted the experimental data. It was observed that the rate of decomposition of DEP with the O(3)/H(2)O(2) and O(3)/AC systems is faster than that with only O(3). The technologies based on AOPs (UV/H(2)O(2), O(3)/H(2)O(2), O(3)/AC) significantly improve the degradation of DEP compared to conventional technologies (O(3), UV). AC adsorption, UV/H(2)O(2), O(3)/H(2)O(2), and O(3)/AC showed a high yield to remove DEP; however, the disadvantage of AC adsorption is its much longer time to reach maximum removal. The best system to treat water (ultrapure and natural) polluted with DEP is the O(3)/AC one since it achieved the highest DEP degradation and TOC removal, as well as the lower water toxicity.

Authors+Show Affiliations

Centro de Investigación y Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, Av. Dr. M. Nava No.6, San Luis de Potosí 78290, Mexico.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

23178761

Citation

Medellin-Castillo, Nahum A., et al. "Removal of Diethyl Phthalate From Water Solution By Adsorption, Photo-oxidation, Ozonation and Advanced Oxidation Process (UV/H₂O₂, O₃/H₂O₂ and O₃/activated Carbon)." The Science of the Total Environment, vol. 442, 2013, pp. 26-35.
Medellin-Castillo NA, Ocampo-Pérez R, Leyva-Ramos R, et al. Removal of diethyl phthalate from water solution by adsorption, photo-oxidation, ozonation and advanced oxidation process (UV/H₂O₂, O₃/H₂O₂ and O₃/activated carbon). Sci Total Environ. 2013;442:26-35.
Medellin-Castillo, N. A., Ocampo-Pérez, R., Leyva-Ramos, R., Sanchez-Polo, M., Rivera-Utrilla, J., & Méndez-Díaz, J. D. (2013). Removal of diethyl phthalate from water solution by adsorption, photo-oxidation, ozonation and advanced oxidation process (UV/H₂O₂, O₃/H₂O₂ and O₃/activated carbon). The Science of the Total Environment, 442, 26-35. https://doi.org/10.1016/j.scitotenv.2012.10.062
Medellin-Castillo NA, et al. Removal of Diethyl Phthalate From Water Solution By Adsorption, Photo-oxidation, Ozonation and Advanced Oxidation Process (UV/H₂O₂, O₃/H₂O₂ and O₃/activated Carbon). Sci Total Environ. 2013 Jan 1;442:26-35. PubMed PMID: 23178761.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of diethyl phthalate from water solution by adsorption, photo-oxidation, ozonation and advanced oxidation process (UV/H₂O₂, O₃/H₂O₂ and O₃/activated carbon). AU - Medellin-Castillo,Nahum A, AU - Ocampo-Pérez,Raúl, AU - Leyva-Ramos,Roberto, AU - Sanchez-Polo,Manuel, AU - Rivera-Utrilla,José, AU - Méndez-Díaz,José D, Y1 - 2012/11/21/ PY - 2012/06/05/received PY - 2012/10/11/revised PY - 2012/10/15/accepted PY - 2012/11/27/entrez PY - 2012/11/28/pubmed PY - 2013/7/9/medline SP - 26 EP - 35 JF - The Science of the total environment JO - Sci Total Environ VL - 442 N2 - The objective of this work was to compare the effectiveness of conventional technologies (adsorption on activated carbon, AC, and ozonation) and technologies based on advanced oxidation processes, AOPs, (UV/H(2)O(2), O(3)/AC, O(3)/H(2)O(2)) to remove phthalates from aqueous solution (ultrapure water, surface water and wastewater). Diethyl phthalate (DEP) was chosen as a model pollutant because of its high water solubility (1,080 mg/L at 293 K) and toxicity. The activated carbons showed a high adsorption capacity to adsorb DEP in aqueous solution (up to 858 mg/g), besides the adsorption mechanism of DEP on activated carbon is governed by dispersive interactions between π electrons of its aromatic ring with π electrons of the carbon graphene planes. The photodegration process showed that the pH solution does not significantly affect the degradation kinetics of DEP and the first-order kinetic model satisfactorily fitted the experimental data. It was observed that the rate of decomposition of DEP with the O(3)/H(2)O(2) and O(3)/AC systems is faster than that with only O(3). The technologies based on AOPs (UV/H(2)O(2), O(3)/H(2)O(2), O(3)/AC) significantly improve the degradation of DEP compared to conventional technologies (O(3), UV). AC adsorption, UV/H(2)O(2), O(3)/H(2)O(2), and O(3)/AC showed a high yield to remove DEP; however, the disadvantage of AC adsorption is its much longer time to reach maximum removal. The best system to treat water (ultrapure and natural) polluted with DEP is the O(3)/AC one since it achieved the highest DEP degradation and TOC removal, as well as the lower water toxicity. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/23178761/Removal_of_diethyl_phthalate_from_water_solution_by_adsorption_photo_oxidation_ozonation_and_advanced_oxidation_process__UV/H₂O₂_O₃/H₂O₂_and_O₃/activated_carbon__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(12)01344-7 DB - PRIME DP - Unbound Medicine ER -