Mineralization and photodegradation of oxytetracycline by UV/H2O2/Fe2+ and UV/PS/Fe2+ process: quantification of radicals
In this study, different oxidation processes UVA-365 nm (photolysis), UV–A/H 2 O 2 , UV–A/H 2 O 2 /Fe 2+ , UV–A/S 2 O 8 , and UV–A/S 2 O 8 /Fe 2+ were investigated to compare removal rates efficiencies of Oxytetracycline (OTC). The role of the initial concentration of oxidants, as well as their inhi...
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| Veröffentlicht in: | Research on chemical intermediates 2023, Vol.49 (1), p.1-21 |
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| creator | Ouahiba, Elkhir Chabani, Malika Assadi, Aymen Amin Abdeltif, Amrane Florence, Fourcade Souad, Bouafia |
| description | In this study, different oxidation processes UVA-365 nm (photolysis), UV–A/H
2
O
2
, UV–A/H
2
O
2
/Fe
2+
, UV–A/S
2
O
8
, and UV–A/S
2
O
8
/Fe
2+
were investigated to compare removal rates efficiencies of Oxytetracycline (OTC). The role of the initial concentration of oxidants, as well as their inhibitory threshold regarding degradation and mineralization of OTC, was investigated at different pH. It was found that the initial pH solution had an important role in the photolysis of OTC, since in alkaline solutions, the degradation rate was faster than in acidic solutions, but in terms of mineralization yield, it did not exceed 3%. The addition of oxidants (H
2
O
2
, S
2
O
8
) had an impact on the mineralization, which reached 50% for the UV/S
2
O
8
system. To improve mineralization, ferrous ions were added to UVA/oxidants, leading to 85% mineralization. Quantification of the main radicals involved in the oxidation process can help in the understanding of the free radical mechanism and their respective contributions to the degradation of OTC. The ability of Dimethylsulfoxide (DMSO) to act as a free radical scavenger was considered in UV/H
2
O
2
and UV/H
2
O
2
/Fe
2+
systems. The hydroxyl radicals can react directly with DMSO to produce a stable intermediate, methanesulfonate. Otherwise, isopropanol, tert-butanol and 1,4, benzoquinone were used as indirect methods to catch and to quantify the main radicals generated during UV/S
2
O
8
and UV/S
2
O
8
/Fe
2+
processes. Finally, the results allowed to quantify the contributions of each radical involved in photo-oxidation for both systems, UV/H
2
O
2
and UV/ S
2
O
8
. |
| doi_str_mv | 10.1007/s11164-022-04871-x |
| format | Article |
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2
O
2
, UV–A/H
2
O
2
/Fe
2+
, UV–A/S
2
O
8
, and UV–A/S
2
O
8
/Fe
2+
were investigated to compare removal rates efficiencies of Oxytetracycline (OTC). The role of the initial concentration of oxidants, as well as their inhibitory threshold regarding degradation and mineralization of OTC, was investigated at different pH. It was found that the initial pH solution had an important role in the photolysis of OTC, since in alkaline solutions, the degradation rate was faster than in acidic solutions, but in terms of mineralization yield, it did not exceed 3%. The addition of oxidants (H
2
O
2
, S
2
O
8
) had an impact on the mineralization, which reached 50% for the UV/S
2
O
8
system. To improve mineralization, ferrous ions were added to UVA/oxidants, leading to 85% mineralization. Quantification of the main radicals involved in the oxidation process can help in the understanding of the free radical mechanism and their respective contributions to the degradation of OTC. The ability of Dimethylsulfoxide (DMSO) to act as a free radical scavenger was considered in UV/H
2
O
2
and UV/H
2
O
2
/Fe
2+
systems. The hydroxyl radicals can react directly with DMSO to produce a stable intermediate, methanesulfonate. Otherwise, isopropanol, tert-butanol and 1,4, benzoquinone were used as indirect methods to catch and to quantify the main radicals generated during UV/S
2
O
8
and UV/S
2
O
8
/Fe
2+
processes. Finally, the results allowed to quantify the contributions of each radical involved in photo-oxidation for both systems, UV/H
2
O
2
and UV/ S
2
O
8
.</description><identifier>ISSN: 0922-6168</identifier><identifier>EISSN: 1568-5675</identifier><identifier>DOI: 10.1007/s11164-022-04871-x</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Benzoquinone ; Butanol ; Catalysis ; Chemical Sciences ; Chemistry ; Chemistry and Materials Science ; Ferrous ions ; Free radicals ; Hydrogen peroxide ; Hydroxyl radicals ; Inorganic Chemistry ; Mineralization ; Oxidation ; Oxidizing agents ; Oxytetracycline ; Photodegradation ; Photolysis ; Physical Chemistry</subject><ispartof>Research on chemical intermediates, 2023, Vol.49 (1), p.1-21</ispartof><rights>The Author(s), under exclusive licence to Springer Nature B.V. 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>Attribution - NonCommercial</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-368844b35aaf87fa5806bdf1eaca08ef7db35ba535fb0448f102cbe2777f9ece3</citedby><cites>FETCH-LOGICAL-c327t-368844b35aaf87fa5806bdf1eaca08ef7db35ba535fb0448f102cbe2777f9ece3</cites><orcidid>0000-0003-2622-2384 ; 0000-0003-1630-5039</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11164-022-04871-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11164-022-04871-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,780,784,885,27923,27924,41487,42556,51318</link.rule.ids><backlink>$$Uhttps://hal.science/hal-03885001$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Ouahiba, Elkhir</creatorcontrib><creatorcontrib>Chabani, Malika</creatorcontrib><creatorcontrib>Assadi, Aymen Amin</creatorcontrib><creatorcontrib>Abdeltif, Amrane</creatorcontrib><creatorcontrib>Florence, Fourcade</creatorcontrib><creatorcontrib>Souad, Bouafia</creatorcontrib><title>Mineralization and photodegradation of oxytetracycline by UV/H2O2/Fe2+ and UV/PS/Fe2+ process: quantification of radicals</title><title>Research on chemical intermediates</title><addtitle>Res Chem Intermed</addtitle><description>In this study, different oxidation processes UVA-365 nm (photolysis), UV–A/H
2
O
2
, UV–A/H
2
O
2
/Fe
2+
, UV–A/S
2
O
8
, and UV–A/S
2
O
8
/Fe
2+
were investigated to compare removal rates efficiencies of Oxytetracycline (OTC). The role of the initial concentration of oxidants, as well as their inhibitory threshold regarding degradation and mineralization of OTC, was investigated at different pH. It was found that the initial pH solution had an important role in the photolysis of OTC, since in alkaline solutions, the degradation rate was faster than in acidic solutions, but in terms of mineralization yield, it did not exceed 3%. The addition of oxidants (H
2
O
2
, S
2
O
8
) had an impact on the mineralization, which reached 50% for the UV/S
2
O
8
system. To improve mineralization, ferrous ions were added to UVA/oxidants, leading to 85% mineralization. Quantification of the main radicals involved in the oxidation process can help in the understanding of the free radical mechanism and their respective contributions to the degradation of OTC. The ability of Dimethylsulfoxide (DMSO) to act as a free radical scavenger was considered in UV/H
2
O
2
and UV/H
2
O
2
/Fe
2+
systems. The hydroxyl radicals can react directly with DMSO to produce a stable intermediate, methanesulfonate. Otherwise, isopropanol, tert-butanol and 1,4, benzoquinone were used as indirect methods to catch and to quantify the main radicals generated during UV/S
2
O
8
and UV/S
2
O
8
/Fe
2+
processes. Finally, the results allowed to quantify the contributions of each radical involved in photo-oxidation for both systems, UV/H
2
O
2
and UV/ S
2
O
8
.</description><subject>Benzoquinone</subject><subject>Butanol</subject><subject>Catalysis</subject><subject>Chemical Sciences</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Ferrous ions</subject><subject>Free radicals</subject><subject>Hydrogen peroxide</subject><subject>Hydroxyl radicals</subject><subject>Inorganic Chemistry</subject><subject>Mineralization</subject><subject>Oxidation</subject><subject>Oxidizing agents</subject><subject>Oxytetracycline</subject><subject>Photodegradation</subject><subject>Photolysis</subject><subject>Physical Chemistry</subject><issn>0922-6168</issn><issn>1568-5675</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9UcFKAzEUDKJgrf6ApwVPImuT7GaTeivFWqFSQes1ZLNJu6Vu2mQrXb_e167Um6fHmzczDG8Quib4nmDMe4EQkqUxpjTGqeAk3p2gDmGZiFnG2Snq4D6cMpKJc3QRwhJjwoTAHdS8lJXxalV-q7p0VaSqIlovXO0KM_eqaEFnI7dralN7pRu9AkWUN9HsozemU9obGXp30AHw-taua--0CeEh2mxVVZe21EcncIVtFS7RmYVhrn5nF81Gj-_DcTyZPj0PB5NYJ5TXcZIJkaZ5wpSyglvFBM7ywhKjtMLCWF7ALVcsYTbHaSoswVTnhnLObd9ok3TRbeu7UCu59uWn8o10qpTjwUTuMZwIweAhXwS4Ny0X8m-2JtRy6ba-gniS8ozBE1mKgUVblvYuBG_s0ZZgua9DtnVIqEMe6pA7ECWtKAC5mhv_Z_2P6ge1Lo3O</recordid><startdate>2023</startdate><enddate>2023</enddate><creator>Ouahiba, Elkhir</creator><creator>Chabani, Malika</creator><creator>Assadi, Aymen Amin</creator><creator>Abdeltif, Amrane</creator><creator>Florence, Fourcade</creator><creator>Souad, Bouafia</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><general>Springer Verlag</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0003-2622-2384</orcidid><orcidid>https://orcid.org/0000-0003-1630-5039</orcidid></search><sort><creationdate>2023</creationdate><title>Mineralization and photodegradation of oxytetracycline by UV/H2O2/Fe2+ and UV/PS/Fe2+ process: quantification of radicals</title><author>Ouahiba, Elkhir ; Chabani, Malika ; Assadi, Aymen Amin ; Abdeltif, Amrane ; Florence, Fourcade ; Souad, Bouafia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-368844b35aaf87fa5806bdf1eaca08ef7db35ba535fb0448f102cbe2777f9ece3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Benzoquinone</topic><topic>Butanol</topic><topic>Catalysis</topic><topic>Chemical Sciences</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Ferrous ions</topic><topic>Free radicals</topic><topic>Hydrogen peroxide</topic><topic>Hydroxyl radicals</topic><topic>Inorganic Chemistry</topic><topic>Mineralization</topic><topic>Oxidation</topic><topic>Oxidizing agents</topic><topic>Oxytetracycline</topic><topic>Photodegradation</topic><topic>Photolysis</topic><topic>Physical Chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ouahiba, Elkhir</creatorcontrib><creatorcontrib>Chabani, Malika</creatorcontrib><creatorcontrib>Assadi, Aymen Amin</creatorcontrib><creatorcontrib>Abdeltif, Amrane</creatorcontrib><creatorcontrib>Florence, Fourcade</creatorcontrib><creatorcontrib>Souad, Bouafia</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Research on chemical intermediates</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ouahiba, Elkhir</au><au>Chabani, Malika</au><au>Assadi, Aymen Amin</au><au>Abdeltif, Amrane</au><au>Florence, Fourcade</au><au>Souad, Bouafia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mineralization and photodegradation of oxytetracycline by UV/H2O2/Fe2+ and UV/PS/Fe2+ process: quantification of radicals</atitle><jtitle>Research on chemical intermediates</jtitle><stitle>Res Chem Intermed</stitle><date>2023</date><risdate>2023</risdate><volume>49</volume><issue>1</issue><spage>1</spage><epage>21</epage><pages>1-21</pages><issn>0922-6168</issn><eissn>1568-5675</eissn><abstract>In this study, different oxidation processes UVA-365 nm (photolysis), UV–A/H
2
O
2
, UV–A/H
2
O
2
/Fe
2+
, UV–A/S
2
O
8
, and UV–A/S
2
O
8
/Fe
2+
were investigated to compare removal rates efficiencies of Oxytetracycline (OTC). The role of the initial concentration of oxidants, as well as their inhibitory threshold regarding degradation and mineralization of OTC, was investigated at different pH. It was found that the initial pH solution had an important role in the photolysis of OTC, since in alkaline solutions, the degradation rate was faster than in acidic solutions, but in terms of mineralization yield, it did not exceed 3%. The addition of oxidants (H
2
O
2
, S
2
O
8
) had an impact on the mineralization, which reached 50% for the UV/S
2
O
8
system. To improve mineralization, ferrous ions were added to UVA/oxidants, leading to 85% mineralization. Quantification of the main radicals involved in the oxidation process can help in the understanding of the free radical mechanism and their respective contributions to the degradation of OTC. The ability of Dimethylsulfoxide (DMSO) to act as a free radical scavenger was considered in UV/H
2
O
2
and UV/H
2
O
2
/Fe
2+
systems. The hydroxyl radicals can react directly with DMSO to produce a stable intermediate, methanesulfonate. Otherwise, isopropanol, tert-butanol and 1,4, benzoquinone were used as indirect methods to catch and to quantify the main radicals generated during UV/S
2
O
8
and UV/S
2
O
8
/Fe
2+
processes. Finally, the results allowed to quantify the contributions of each radical involved in photo-oxidation for both systems, UV/H
2
O
2
and UV/ S
2
O
8
.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11164-022-04871-x</doi><tpages>21</tpages><orcidid>https://orcid.org/0000-0003-2622-2384</orcidid><orcidid>https://orcid.org/0000-0003-1630-5039</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
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| ispartof | Research on chemical intermediates, 2023, Vol.49 (1), p.1-21 |
| issn | 0922-6168 1568-5675 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_hal_03885001v1 |
| source | SpringerLink |
| subjects | Benzoquinone Butanol Catalysis Chemical Sciences Chemistry Chemistry and Materials Science Ferrous ions Free radicals Hydrogen peroxide Hydroxyl radicals Inorganic Chemistry Mineralization Oxidation Oxidizing agents Oxytetracycline Photodegradation Photolysis Physical Chemistry |
| title | Mineralization and photodegradation of oxytetracycline by UV/H2O2/Fe2+ and UV/PS/Fe2+ process: quantification of radicals |
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