An unconventional approach to studying the reaction kinetics of the Fenton’s oxidation of 2,4-dichlorophenoxyacetic acid
The Fenton’s oxidation kinetics of herbicide 2,4-D at various [Fe(II)] and [H 2O 2] combinations was investigated and modelled through an unconventional approach. The reaction kinetics of 2,4-D degradation demonstrated a two-stage pattern of decay, where a very fast reactive stage was followed by a...
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| Veröffentlicht in: | Chemosphere (Oxford) 2004-12, Vol.57 (9), p.1165-1171 |
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| creator | Chu, W. Kwan, C.Y. Chan, K.H. Chong, Calvin |
| description | The Fenton’s oxidation kinetics of herbicide 2,4-D at various [Fe(II)] and [H
2O
2] combinations was investigated and modelled through an unconventional approach. The reaction kinetics of 2,4-D degradation demonstrated a two-stage pattern of decay, where a very fast reactive stage was followed by a retardation stage due to the depletion of oxidants and to the competitive side-reactions of the intermediates (including 2,4-dichlorophenol, chlorohydroquinone and 2,6-dichlororesorcinol). A model characterized by two newly established constants, the initial decay rate and the maximum oxidative capacity, was proposed and proven capable of describing the two-stage process, which cannot easily be described by conventional first- or second-order kinetics approaches. |
| doi_str_mv | 10.1016/j.chemosphere.2004.07.047 |
| format | Article |
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2O
2] combinations was investigated and modelled through an unconventional approach. The reaction kinetics of 2,4-D degradation demonstrated a two-stage pattern of decay, where a very fast reactive stage was followed by a retardation stage due to the depletion of oxidants and to the competitive side-reactions of the intermediates (including 2,4-dichlorophenol, chlorohydroquinone and 2,6-dichlororesorcinol). A model characterized by two newly established constants, the initial decay rate and the maximum oxidative capacity, was proposed and proven capable of describing the two-stage process, which cannot easily be described by conventional first- or second-order kinetics approaches.</description><subject>2,4-D</subject><subject>2,4-Dichlorophenoxyacetic Acid - chemistry</subject><subject>Applied sciences</subject><subject>Biological and physicochemical phenomena</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Exact sciences and technology</subject><subject>Fenton's reagent</subject><subject>Fenton’s oxidation</subject><subject>ferrous ions</subject><subject>Herbicide</subject><subject>Herbicides - chemistry</subject><subject>Hydrogen peroxide</subject><subject>Hydrogen Peroxide - chemistry</subject><subject>Hydrogen-Ion Concentration</subject><subject>iron</subject><subject>Iron - chemistry</subject><subject>Kinetics</subject><subject>mathematical models</subject><subject>Models, Chemical</subject><subject>Natural water pollution</subject><subject>oxidation</subject><subject>Pollution</subject><subject>Pollution, environment geology</subject><subject>reaction kinetics</subject><subject>Water treatment and pollution</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkcFu1DAURSMEokPhFyAsyooMz4mdxMtqRFukSiyga8vz_NJ4yNiDnVQdVvwGv8eX4HRGKjtYWfI9177v3Sx7y2DJgNUfNkvsaevjrqdAyxKAL6FZAm-eZAvWNrJgpWyfZoskiKIWlTjJXsS4AUhmIZ9nJ0wI4LypF9mPc5dPDr27Izda7_SQ690ueI19Pvo8jpPZW3ebjz3lgTTOTP7NOhotxtx3D8JF8nr3--evdHNvjX6Akla-54Wx2A8--JTV-fu9xtmZa7TmZfas00OkV8fzNLu5-Ph1dVVcf778tDq_LlAIMRbcMFFhVVZUEwjJqQUo63KNWpQVQCN0zdcMBaCQKPS6KXkrRIOtJGOQqDrN3h3eTWN9nyiOamsj0jBoR36KiklegWTVv0HeMA5MJlAeQAw-xkCd2gW71WGvGKi5IbVRfzWk5oYUNCo1lLyvj59M6y2ZR-exkgScHQEdUQ9d0A5tfOTqks0xEvfmwHXaK30bEnPzpQSWdiJb4PUcc3UgKG33zlJQES05JGMD4aiMt_8R-A9ig8CV</recordid><startdate>20041201</startdate><enddate>20041201</enddate><creator>Chu, W.</creator><creator>Kwan, C.Y.</creator><creator>Chan, K.H.</creator><creator>Chong, Calvin</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><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>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7QH</scope><scope>7TV</scope><scope>7UA</scope></search><sort><creationdate>20041201</creationdate><title>An unconventional approach to studying the reaction kinetics of the Fenton’s oxidation of 2,4-dichlorophenoxyacetic acid</title><author>Chu, W. ; Kwan, C.Y. ; Chan, K.H. ; Chong, Calvin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c555t-4d153c323e6e0594e800262bca5230075a64b1c50c59c5ab7248557c89eddcee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>2,4-D</topic><topic>2,4-Dichlorophenoxyacetic Acid - chemistry</topic><topic>Applied sciences</topic><topic>Biological and physicochemical phenomena</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Exact sciences and technology</topic><topic>Fenton's reagent</topic><topic>Fenton’s oxidation</topic><topic>ferrous ions</topic><topic>Herbicide</topic><topic>Herbicides - chemistry</topic><topic>Hydrogen peroxide</topic><topic>Hydrogen Peroxide - chemistry</topic><topic>Hydrogen-Ion Concentration</topic><topic>iron</topic><topic>Iron - chemistry</topic><topic>Kinetics</topic><topic>mathematical models</topic><topic>Models, Chemical</topic><topic>Natural water pollution</topic><topic>oxidation</topic><topic>Pollution</topic><topic>Pollution, environment geology</topic><topic>reaction kinetics</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chu, W.</creatorcontrib><creatorcontrib>Kwan, C.Y.</creatorcontrib><creatorcontrib>Chan, K.H.</creatorcontrib><creatorcontrib>Chong, Calvin</creatorcontrib><collection>AGRIS</collection><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>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Aqualine</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chu, W.</au><au>Kwan, C.Y.</au><au>Chan, K.H.</au><au>Chong, Calvin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An unconventional approach to studying the reaction kinetics of the Fenton’s oxidation of 2,4-dichlorophenoxyacetic acid</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2004-12-01</date><risdate>2004</risdate><volume>57</volume><issue>9</issue><spage>1165</spage><epage>1171</epage><pages>1165-1171</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><coden>CMSHAF</coden><abstract>The Fenton’s oxidation kinetics of herbicide 2,4-D at various [Fe(II)] and [H
2O
2] combinations was investigated and modelled through an unconventional approach. The reaction kinetics of 2,4-D degradation demonstrated a two-stage pattern of decay, where a very fast reactive stage was followed by a retardation stage due to the depletion of oxidants and to the competitive side-reactions of the intermediates (including 2,4-dichlorophenol, chlorohydroquinone and 2,6-dichlororesorcinol). A model characterized by two newly established constants, the initial decay rate and the maximum oxidative capacity, was proposed and proven capable of describing the two-stage process, which cannot easily be described by conventional first- or second-order kinetics approaches.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>15504476</pmid><doi>10.1016/j.chemosphere.2004.07.047</doi><tpages>7</tpages></addata></record> |
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| ispartof | Chemosphere (Oxford), 2004-12, Vol.57 (9), p.1165-1171 |
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| subjects | 2,4-D 2,4-Dichlorophenoxyacetic Acid - chemistry Applied sciences Biological and physicochemical phenomena Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Fenton's reagent Fenton’s oxidation ferrous ions Herbicide Herbicides - chemistry Hydrogen peroxide Hydrogen Peroxide - chemistry Hydrogen-Ion Concentration iron Iron - chemistry Kinetics mathematical models Models, Chemical Natural water pollution oxidation Pollution Pollution, environment geology reaction kinetics Water treatment and pollution |
| title | An unconventional approach to studying the reaction kinetics of the Fenton’s oxidation of 2,4-dichlorophenoxyacetic acid |
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