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The critical role of the operating conditions on the Fenton oxidation of 2-chlorophenol: Assessment of PCDD/Fs formation
•Oxidation byproducts were quantified when 2-CPs was treated by Fenton process.•H2O2 dose, Tª and chloride show positive influence in the degradation of 2-CP.•TOC balance was only closed with H2O2 at 100% of the stoichiometric dose and 70°C.•Besides, PCDD/Fs formation, promoted in the presence of ch...
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| Published in: | Journal of hazardous materials 2014-08, Vol.279, p.579-585 |
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| container_title | Journal of hazardous materials |
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| creator | Vallejo, Marta San Román, M. Fresnedo Ortiz, Inmaculada Irabien, Angel |
| description | •Oxidation byproducts were quantified when 2-CPs was treated by Fenton process.•H2O2 dose, Tª and chloride show positive influence in the degradation of 2-CP.•TOC balance was only closed with H2O2 at 100% of the stoichiometric dose and 70°C.•Besides, PCDD/Fs formation, promoted in the presence of chloride, was quantified.
This work assesses the influence of the operating conditions H2O2 dose (20 or 100% of the stoichiometric amount), temperature (20 or 70°C), and the presence of chloride in the oxidation medium in the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) during Fenton treatment of aqueous samples of 2-chlorophenol, 2-CP, one of the strongest precursor of PCDD/Fs. After 4h of oxidation in the experiments carried out with 20% H2O2 chlorinated phenoxyphenols and biphenyls, which are intermediates in PCDD/Fs formation, as well as PCDD/Fs were observed, resulting in concentrations 11 times higher than in the untreated sample. Additionally, when NaCl was also present in the reaction medium, PCDD/Fs were formed at higher extent, with a total concentration 74.4 times higher than in the untreated 2-CP solution. Results depicted a preferential formation of PCDFs over PCDDs, with dominance of lower chlorinated PCDD/Fs (tetra and penta-PCDD/Fs). Besides, the formation of the most toxic PCDD/Fs congeners (2,3,7,8-PCDD/Fs) was not favored under the operating conditions used in this work. |
| doi_str_mv | 10.1016/j.jhazmat.2014.07.020 |
| format | article |
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This work assesses the influence of the operating conditions H2O2 dose (20 or 100% of the stoichiometric amount), temperature (20 or 70°C), and the presence of chloride in the oxidation medium in the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) during Fenton treatment of aqueous samples of 2-chlorophenol, 2-CP, one of the strongest precursor of PCDD/Fs. After 4h of oxidation in the experiments carried out with 20% H2O2 chlorinated phenoxyphenols and biphenyls, which are intermediates in PCDD/Fs formation, as well as PCDD/Fs were observed, resulting in concentrations 11 times higher than in the untreated sample. Additionally, when NaCl was also present in the reaction medium, PCDD/Fs were formed at higher extent, with a total concentration 74.4 times higher than in the untreated 2-CP solution. Results depicted a preferential formation of PCDFs over PCDDs, with dominance of lower chlorinated PCDD/Fs (tetra and penta-PCDD/Fs). Besides, the formation of the most toxic PCDD/Fs congeners (2,3,7,8-PCDD/Fs) was not favored under the operating conditions used in this work.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2014.07.020</identifier><identifier>PMID: 25113517</identifier><identifier>CODEN: JHMAD9</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>2-Chlorophenol ; Applied sciences ; Assessments ; Benzofurans - chemistry ; Chemical engineering ; Chloride influence ; Chlorides ; Chlorides - chemistry ; Chlorination ; Chlorophenols - chemistry ; Congeners ; Dominance ; Exact sciences and technology ; Fenton oxidation ; Formations ; Hydrogen Peroxide - chemistry ; Hydrogen peroxide dose ; Iron - chemistry ; Oxidation ; Oxidation-Reduction ; PCDD/Fs formation ; Pollution ; Polychlorinated Dibenzodioxins - analogs & derivatives ; Polychlorinated Dibenzodioxins - chemistry ; Precursors ; Reactors ; Temperature ; Temperature effect</subject><ispartof>Journal of hazardous materials, 2014-08, Vol.279, p.579-585</ispartof><rights>2014 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2014 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c545t-770f2c1219b8e53dc52e42e8b1ec406d36b843513046960de1bc37113387a2db3</citedby><cites>FETCH-LOGICAL-c545t-770f2c1219b8e53dc52e42e8b1ec406d36b843513046960de1bc37113387a2db3</cites><orcidid>0000-0002-2411-4163</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28833424$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25113517$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Vallejo, Marta</creatorcontrib><creatorcontrib>San Román, M. Fresnedo</creatorcontrib><creatorcontrib>Ortiz, Inmaculada</creatorcontrib><creatorcontrib>Irabien, Angel</creatorcontrib><title>The critical role of the operating conditions on the Fenton oxidation of 2-chlorophenol: Assessment of PCDD/Fs formation</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>•Oxidation byproducts were quantified when 2-CPs was treated by Fenton process.•H2O2 dose, Tª and chloride show positive influence in the degradation of 2-CP.•TOC balance was only closed with H2O2 at 100% of the stoichiometric dose and 70°C.•Besides, PCDD/Fs formation, promoted in the presence of chloride, was quantified.
This work assesses the influence of the operating conditions H2O2 dose (20 or 100% of the stoichiometric amount), temperature (20 or 70°C), and the presence of chloride in the oxidation medium in the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) during Fenton treatment of aqueous samples of 2-chlorophenol, 2-CP, one of the strongest precursor of PCDD/Fs. After 4h of oxidation in the experiments carried out with 20% H2O2 chlorinated phenoxyphenols and biphenyls, which are intermediates in PCDD/Fs formation, as well as PCDD/Fs were observed, resulting in concentrations 11 times higher than in the untreated sample. Additionally, when NaCl was also present in the reaction medium, PCDD/Fs were formed at higher extent, with a total concentration 74.4 times higher than in the untreated 2-CP solution. Results depicted a preferential formation of PCDFs over PCDDs, with dominance of lower chlorinated PCDD/Fs (tetra and penta-PCDD/Fs). Besides, the formation of the most toxic PCDD/Fs congeners (2,3,7,8-PCDD/Fs) was not favored under the operating conditions used in this work.</description><subject>2-Chlorophenol</subject><subject>Applied sciences</subject><subject>Assessments</subject><subject>Benzofurans - chemistry</subject><subject>Chemical engineering</subject><subject>Chloride influence</subject><subject>Chlorides</subject><subject>Chlorides - chemistry</subject><subject>Chlorination</subject><subject>Chlorophenols - chemistry</subject><subject>Congeners</subject><subject>Dominance</subject><subject>Exact sciences and technology</subject><subject>Fenton oxidation</subject><subject>Formations</subject><subject>Hydrogen Peroxide - chemistry</subject><subject>Hydrogen peroxide dose</subject><subject>Iron - chemistry</subject><subject>Oxidation</subject><subject>Oxidation-Reduction</subject><subject>PCDD/Fs formation</subject><subject>Pollution</subject><subject>Polychlorinated Dibenzodioxins - analogs & derivatives</subject><subject>Polychlorinated Dibenzodioxins - chemistry</subject><subject>Precursors</subject><subject>Reactors</subject><subject>Temperature</subject><subject>Temperature effect</subject><issn>0304-3894</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNkc1u1DAUhS0EokPhEUDZILFJ6n972KBq2gGkSmVR1pbj3DAeJfZgZ1Dbp6_TGWDZrmz5fMf2uQeh9wQ3BBN5tm22G3s_2qmhmPAGqwZT_AItiFasZozJl2iBGeY100t-gt7kvMUYEyX4a3RCBSFMELVAtzcbqFzyk3d2qFIcoIp9NZXDuINkJx9-VS6GrgAx5CqGR20NYSrbeOs7Owuzh9ZuM8QUdxsIcfhcnecMOY-FnNUfq4uLs3Wu-pjGR8tb9Kq3Q4Z3x_UU_Vxf3qy-1VfXX7-vzq9qJ7iYaqVwTx2hZNlqEKxzggKnoFsCjmPZMdlqXqKUpHIpcQekdUyVdEwrS7uWnaJPh3t3Kf7eQ57M6LODYbAB4j4bIgXhVGipn4HyeYRCqadRIamUXEtWUHFAXYo5J-jNLvnRpjtDsJmrNFtzrNLMVRqsTKmy-D4cn9i3I3T_XH-7K8DHI2BzKa9PNjif_3NaM8YpL9yXAwdlzH88JJOdh-Cg8wncZLron_jKA8gAvck</recordid><startdate>20140830</startdate><enddate>20140830</enddate><creator>Vallejo, Marta</creator><creator>San Román, M. Fresnedo</creator><creator>Ortiz, Inmaculada</creator><creator>Irabien, Angel</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7ST</scope><scope>7TV</scope><scope>7U7</scope><scope>C1K</scope><scope>SOI</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><orcidid>https://orcid.org/0000-0002-2411-4163</orcidid></search><sort><creationdate>20140830</creationdate><title>The critical role of the operating conditions on the Fenton oxidation of 2-chlorophenol: Assessment of PCDD/Fs formation</title><author>Vallejo, Marta ; San Román, M. Fresnedo ; Ortiz, Inmaculada ; Irabien, Angel</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c545t-770f2c1219b8e53dc52e42e8b1ec406d36b843513046960de1bc37113387a2db3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>2-Chlorophenol</topic><topic>Applied sciences</topic><topic>Assessments</topic><topic>Benzofurans - chemistry</topic><topic>Chemical engineering</topic><topic>Chloride influence</topic><topic>Chlorides</topic><topic>Chlorides - chemistry</topic><topic>Chlorination</topic><topic>Chlorophenols - chemistry</topic><topic>Congeners</topic><topic>Dominance</topic><topic>Exact sciences and technology</topic><topic>Fenton oxidation</topic><topic>Formations</topic><topic>Hydrogen Peroxide - chemistry</topic><topic>Hydrogen peroxide dose</topic><topic>Iron - chemistry</topic><topic>Oxidation</topic><topic>Oxidation-Reduction</topic><topic>PCDD/Fs formation</topic><topic>Pollution</topic><topic>Polychlorinated Dibenzodioxins - analogs & derivatives</topic><topic>Polychlorinated Dibenzodioxins - chemistry</topic><topic>Precursors</topic><topic>Reactors</topic><topic>Temperature</topic><topic>Temperature effect</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vallejo, Marta</creatorcontrib><creatorcontrib>San Román, M. Fresnedo</creatorcontrib><creatorcontrib>Ortiz, Inmaculada</creatorcontrib><creatorcontrib>Irabien, Angel</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vallejo, Marta</au><au>San Román, M. Fresnedo</au><au>Ortiz, Inmaculada</au><au>Irabien, Angel</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The critical role of the operating conditions on the Fenton oxidation of 2-chlorophenol: Assessment of PCDD/Fs formation</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2014-08-30</date><risdate>2014</risdate><volume>279</volume><spage>579</spage><epage>585</epage><pages>579-585</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><coden>JHMAD9</coden><abstract>•Oxidation byproducts were quantified when 2-CPs was treated by Fenton process.•H2O2 dose, Tª and chloride show positive influence in the degradation of 2-CP.•TOC balance was only closed with H2O2 at 100% of the stoichiometric dose and 70°C.•Besides, PCDD/Fs formation, promoted in the presence of chloride, was quantified.
This work assesses the influence of the operating conditions H2O2 dose (20 or 100% of the stoichiometric amount), temperature (20 or 70°C), and the presence of chloride in the oxidation medium in the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) during Fenton treatment of aqueous samples of 2-chlorophenol, 2-CP, one of the strongest precursor of PCDD/Fs. After 4h of oxidation in the experiments carried out with 20% H2O2 chlorinated phenoxyphenols and biphenyls, which are intermediates in PCDD/Fs formation, as well as PCDD/Fs were observed, resulting in concentrations 11 times higher than in the untreated sample. Additionally, when NaCl was also present in the reaction medium, PCDD/Fs were formed at higher extent, with a total concentration 74.4 times higher than in the untreated 2-CP solution. Results depicted a preferential formation of PCDFs over PCDDs, with dominance of lower chlorinated PCDD/Fs (tetra and penta-PCDD/Fs). Besides, the formation of the most toxic PCDD/Fs congeners (2,3,7,8-PCDD/Fs) was not favored under the operating conditions used in this work.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><pmid>25113517</pmid><doi>10.1016/j.jhazmat.2014.07.020</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-2411-4163</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of hazardous materials, 2014-08, Vol.279, p.579-585 |
| issn | 0304-3894 1873-3336 |
| language | eng |
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| source | ScienceDirect Journals |
| subjects | 2-Chlorophenol Applied sciences Assessments Benzofurans - chemistry Chemical engineering Chloride influence Chlorides Chlorides - chemistry Chlorination Chlorophenols - chemistry Congeners Dominance Exact sciences and technology Fenton oxidation Formations Hydrogen Peroxide - chemistry Hydrogen peroxide dose Iron - chemistry Oxidation Oxidation-Reduction PCDD/Fs formation Pollution Polychlorinated Dibenzodioxins - analogs & derivatives Polychlorinated Dibenzodioxins - chemistry Precursors Reactors Temperature Temperature effect |
| title | The critical role of the operating conditions on the Fenton oxidation of 2-chlorophenol: Assessment of PCDD/Fs formation |
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