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A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water

Lobna Mansouri, Chedly Tizaoui Orcid Logo, Sven-Uwe Geissen, Latifa Bousselmi

Journal of Hazardous Materials, Volume: 363, Pages: 401 - 411

Swansea University Author: Chedly Tizaoui Orcid Logo

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Abstract

Several Advanced Oxidation Processes (AOPs) including O3/H2O2, O3/TiO2, O3/activated carbon (AC), O3/Al2O3, O3/Fe2+/H2O2 and UV/TiO2 have been investigated and compared for the removal of diethyl phthalate (DEP), an endocrine disrupting compound, in aqueous solutions. Hydroxyl radicals were the main...

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Published in: Journal of Hazardous Materials
ISSN: 0304-3894
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa44850
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spelling 2022-12-07T16:24:40.5217488 v2 44850 2018-10-11 A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water 4b34a0286d3c0b0b081518fa6987031d 0000-0003-2159-7881 Chedly Tizaoui Chedly Tizaoui true false 2018-10-11 CHEG Several Advanced Oxidation Processes (AOPs) including O3/H2O2, O3/TiO2, O3/activated carbon (AC), O3/Al2O3, O3/Fe2+/H2O2 and UV/TiO2 have been investigated and compared for the removal of diethyl phthalate (DEP), an endocrine disrupting compound, in aqueous solutions. Hydroxyl radicals were the main species responsible for DEP degradation and this was supported by computational chemistry calculation, scavenger experiments, and LC/MS/MS analysis. The change of the abundance of reaction products over time was determined. Organic acids as well as anhydride and hydroxylated products were found to accumulate in solution even after long reaction time (2 h). Careful choice of the operating parameters (pH, ozone concentration and catalyst dosage) was crucial to achieve enhanced performance of the combined processes above what each oxidant and catalyst can achieve alone. O3/AC process was found to reduce the oxidation efficiency of O3 at high ozone concentrations. Heterogeneous catalytic ozonation with Al2O3 was the most effective process for DEP removal (~100% removal in about 15 min) and based on pseudo-first-order kinetics at pH7, the studied oxidation processes followed the order: O3/Al2O3(0.093 min-1)&#62;O3/H2O2/Fe2+(0.076 min-1)&#62;O3/AC(0.069 min-1)&#62;O3/H2O2(0.053 min-1)&#62;O3/TiO2(0.050 min-1)&#62; O3 alone (0.039 min-1)&#62;UV/TiO2(0.009 min-1). Journal Article Journal of Hazardous Materials 363 401 411 0304-3894 Diethyl phthalate, ozone, advanced oxidation processes, photocatalysis, hydroxyl radical 1 2 2019 2019-02-01 10.1016/j.jhazmat.2018.10.003 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2022-12-07T16:24:40.5217488 2018-10-11T09:00:42.3990922 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Lobna Mansouri 1 Chedly Tizaoui 0000-0003-2159-7881 2 Sven-Uwe Geissen 3 Latifa Bousselmi 4 0044850-11102018090245.pdf mansouri2018.pdf 2018-10-11T09:02:45.0530000 Output 1342004 application/pdf Accepted Manuscript true 2019-10-06T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng
title A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
spellingShingle A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
Chedly Tizaoui
title_short A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
title_full A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
title_fullStr A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
title_full_unstemmed A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
title_sort A comparative study on ozone, hydrogen peroxide and UV based advanced oxidation processes for efficient removal of diethyl phthalate in water
author_id_str_mv 4b34a0286d3c0b0b081518fa6987031d
author_id_fullname_str_mv 4b34a0286d3c0b0b081518fa6987031d_***_Chedly Tizaoui
author Chedly Tizaoui
author2 Lobna Mansouri
Chedly Tizaoui
Sven-Uwe Geissen
Latifa Bousselmi
format Journal article
container_title Journal of Hazardous Materials
container_volume 363
container_start_page 401
publishDate 2019
institution Swansea University
issn 0304-3894
doi_str_mv 10.1016/j.jhazmat.2018.10.003
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
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description Several Advanced Oxidation Processes (AOPs) including O3/H2O2, O3/TiO2, O3/activated carbon (AC), O3/Al2O3, O3/Fe2+/H2O2 and UV/TiO2 have been investigated and compared for the removal of diethyl phthalate (DEP), an endocrine disrupting compound, in aqueous solutions. Hydroxyl radicals were the main species responsible for DEP degradation and this was supported by computational chemistry calculation, scavenger experiments, and LC/MS/MS analysis. The change of the abundance of reaction products over time was determined. Organic acids as well as anhydride and hydroxylated products were found to accumulate in solution even after long reaction time (2 h). Careful choice of the operating parameters (pH, ozone concentration and catalyst dosage) was crucial to achieve enhanced performance of the combined processes above what each oxidant and catalyst can achieve alone. O3/AC process was found to reduce the oxidation efficiency of O3 at high ozone concentrations. Heterogeneous catalytic ozonation with Al2O3 was the most effective process for DEP removal (~100% removal in about 15 min) and based on pseudo-first-order kinetics at pH7, the studied oxidation processes followed the order: O3/Al2O3(0.093 min-1)&#62;O3/H2O2/Fe2+(0.076 min-1)&#62;O3/AC(0.069 min-1)&#62;O3/H2O2(0.053 min-1)&#62;O3/TiO2(0.050 min-1)&#62; O3 alone (0.039 min-1)&#62;UV/TiO2(0.009 min-1).
published_date 2019-02-01T03:56:18Z
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