Electrochemical oxidation of humic acid and sanitary landfill leachate: Influence of anode material, chloride concentration and current density
The influence of applied current density and chloride ion concentration on the ability of Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes for the electrochemical oxidation of humic acid and sanitary landfill leachate samples was assessed and compared with that of BDD anode. For the experimental conditions us...
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| Veröffentlicht in: | The Science of the total environment 2016-01, Vol.541 (C), p.282-291 |
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| creator | Fernandes, A. Santos, D. Pacheco, M.J. Ciríaco, L. Lopes, A. |
| description | The influence of applied current density and chloride ion concentration on the ability of Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes for the electrochemical oxidation of humic acid and sanitary landfill leachate samples was assessed and compared with that of BDD anode. For the experimental conditions used, results show that both organic load and nitrogen removal rates increase with the applied current density and chloride ion concentration, although there is an optimum COD/[Cl−]0 ratio below which there is no further increase in COD removal. Metal oxide anodes present a similar performance to that of BDD, being the results obtained for Ti/Pt/PbO2 slightly better than for Ti/Pt/SnO2–Sb2O4. Contrary to BDD, Ti/Pt/PbO2 promotes lower nitrate formation and is the most suitable material for total nitrogen elimination. The importance of the optimum ratio of Cl−/COD/NH4+ initial concentrations is discussed.
[Display omitted]
•Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes have similar performance to that of BDD.•Ti/Pt/PbO2 presents better performance than Ti/Pt/SnO2–Sb2O4 for pollutants removal.•Ti/Pt/PbO2 promotes the lowest nitrate formation and the highest TN elimination rate.•Optimum COD/[Cl−] for maximum chloride indirect oxidation performance•COD and TN removals increase with current density and in the presence of Cl−. |
| doi_str_mv | 10.1016/j.scitotenv.2015.09.052 |
| format | Article |
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[Display omitted]
•Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes have similar performance to that of BDD.•Ti/Pt/PbO2 presents better performance than Ti/Pt/SnO2–Sb2O4 for pollutants removal.•Ti/Pt/PbO2 promotes the lowest nitrate formation and the highest TN elimination rate.•Optimum COD/[Cl−] for maximum chloride indirect oxidation performance•COD and TN removals increase with current density and in the presence of Cl−.</description><identifier>ISSN: 0048-9697</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2015.09.052</identifier><identifier>PMID: 26410703</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Anodic oxidation ; Humic acid ; Sanitary landfill leachate ; Ti/Pt/PbO2 ; Ti/Pt/SnO2–Sb2O4</subject><ispartof>The Science of the total environment, 2016-01, Vol.541 (C), p.282-291</ispartof><rights>2015 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c480t-191fc2f57d40c89085d6952a71cd6338a4a2019f4841e79fda50e21b7fe8a38c3</citedby><cites>FETCH-LOGICAL-c480t-191fc2f57d40c89085d6952a71cd6338a4a2019f4841e79fda50e21b7fe8a38c3</cites><orcidid>0000-0002-9007-5342 ; 0000000290075342</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.scitotenv.2015.09.052$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26410703$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1359843$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Fernandes, A.</creatorcontrib><creatorcontrib>Santos, D.</creatorcontrib><creatorcontrib>Pacheco, M.J.</creatorcontrib><creatorcontrib>Ciríaco, L.</creatorcontrib><creatorcontrib>Lopes, A.</creatorcontrib><title>Electrochemical oxidation of humic acid and sanitary landfill leachate: Influence of anode material, chloride concentration and current density</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>The influence of applied current density and chloride ion concentration on the ability of Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes for the electrochemical oxidation of humic acid and sanitary landfill leachate samples was assessed and compared with that of BDD anode. For the experimental conditions used, results show that both organic load and nitrogen removal rates increase with the applied current density and chloride ion concentration, although there is an optimum COD/[Cl−]0 ratio below which there is no further increase in COD removal. Metal oxide anodes present a similar performance to that of BDD, being the results obtained for Ti/Pt/PbO2 slightly better than for Ti/Pt/SnO2–Sb2O4. Contrary to BDD, Ti/Pt/PbO2 promotes lower nitrate formation and is the most suitable material for total nitrogen elimination. The importance of the optimum ratio of Cl−/COD/NH4+ initial concentrations is discussed.
[Display omitted]
•Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes have similar performance to that of BDD.•Ti/Pt/PbO2 presents better performance than Ti/Pt/SnO2–Sb2O4 for pollutants removal.•Ti/Pt/PbO2 promotes the lowest nitrate formation and the highest TN elimination rate.•Optimum COD/[Cl−] for maximum chloride indirect oxidation performance•COD and TN removals increase with current density and in the presence of Cl−.</description><subject>Anodic oxidation</subject><subject>Humic acid</subject><subject>Sanitary landfill leachate</subject><subject>Ti/Pt/PbO2</subject><subject>Ti/Pt/SnO2–Sb2O4</subject><issn>0048-9697</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNkc9uFiEUxYnR2K_VV1DiyoUzwvwD3DVNrU2auNE1oXDJ8IWBCkzTPoWvLJOp3SobwuV3z4VzEHpPSUsJnT4f26xdiQXCfdsROrZEtGTsXqAD5Uw0lHTTS3QgZOCNmAQ7Qac5H0ldjNPX6KSbBkoY6Q_o96UHXVLUMyxOK4_jgzOquBhwtHheaxEr7QxWweCsgisqPWJfT9Z5jz0oPasCX_B1sH6FoGHrUyEawEu9SE75T1jPPiZXSzpWIpS0T9g09ZpSrWADIbvy-Aa9sspnePu0n6GfXy9_XHxrbr5fXV-c3zR64KQ0VFCrOzsyMxDNBeGjmcTYKUa1mfqeq0FVW4Qd-ECBCWvUSKCjt8wCVz3X_Rn6sOvGXJzczAQ919eF6oak_Sj40Ffo4w7dpfhrhVzk4rIGX78Pcc2Ssqnrx0GI_0GrJiXTKCrKdlSnmHMCK--SW6qtkhK5pSuP8jlduaUriZA13dr57mnIeruAee77G2cFzncAqnX3DtImtIViXNo-ZqL755A_4hG8cg</recordid><startdate>20160115</startdate><enddate>20160115</enddate><creator>Fernandes, A.</creator><creator>Santos, D.</creator><creator>Pacheco, M.J.</creator><creator>Ciríaco, L.</creator><creator>Lopes, A.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-9007-5342</orcidid><orcidid>https://orcid.org/0000000290075342</orcidid></search><sort><creationdate>20160115</creationdate><title>Electrochemical oxidation of humic acid and sanitary landfill leachate: Influence of anode material, chloride concentration and current density</title><author>Fernandes, A. ; Santos, D. ; Pacheco, M.J. ; Ciríaco, L. ; Lopes, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c480t-191fc2f57d40c89085d6952a71cd6338a4a2019f4841e79fda50e21b7fe8a38c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Anodic oxidation</topic><topic>Humic acid</topic><topic>Sanitary landfill leachate</topic><topic>Ti/Pt/PbO2</topic><topic>Ti/Pt/SnO2–Sb2O4</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fernandes, A.</creatorcontrib><creatorcontrib>Santos, D.</creatorcontrib><creatorcontrib>Pacheco, M.J.</creatorcontrib><creatorcontrib>Ciríaco, L.</creatorcontrib><creatorcontrib>Lopes, A.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>OSTI.GOV</collection><jtitle>The Science of the total environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fernandes, A.</au><au>Santos, D.</au><au>Pacheco, M.J.</au><au>Ciríaco, L.</au><au>Lopes, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrochemical oxidation of humic acid and sanitary landfill leachate: Influence of anode material, chloride concentration and current density</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2016-01-15</date><risdate>2016</risdate><volume>541</volume><issue>C</issue><spage>282</spage><epage>291</epage><pages>282-291</pages><issn>0048-9697</issn><eissn>1879-1026</eissn><abstract>The influence of applied current density and chloride ion concentration on the ability of Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes for the electrochemical oxidation of humic acid and sanitary landfill leachate samples was assessed and compared with that of BDD anode. For the experimental conditions used, results show that both organic load and nitrogen removal rates increase with the applied current density and chloride ion concentration, although there is an optimum COD/[Cl−]0 ratio below which there is no further increase in COD removal. Metal oxide anodes present a similar performance to that of BDD, being the results obtained for Ti/Pt/PbO2 slightly better than for Ti/Pt/SnO2–Sb2O4. Contrary to BDD, Ti/Pt/PbO2 promotes lower nitrate formation and is the most suitable material for total nitrogen elimination. The importance of the optimum ratio of Cl−/COD/NH4+ initial concentrations is discussed.
[Display omitted]
•Ti/Pt/PbO2 and Ti/Pt/SnO2–Sb2O4 anodes have similar performance to that of BDD.•Ti/Pt/PbO2 presents better performance than Ti/Pt/SnO2–Sb2O4 for pollutants removal.•Ti/Pt/PbO2 promotes the lowest nitrate formation and the highest TN elimination rate.•Optimum COD/[Cl−] for maximum chloride indirect oxidation performance•COD and TN removals increase with current density and in the presence of Cl−.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>26410703</pmid><doi>10.1016/j.scitotenv.2015.09.052</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-9007-5342</orcidid><orcidid>https://orcid.org/0000000290075342</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Anodic oxidation Humic acid Sanitary landfill leachate Ti/Pt/PbO2 Ti/Pt/SnO2–Sb2O4 |
| title | Electrochemical oxidation of humic acid and sanitary landfill leachate: Influence of anode material, chloride concentration and current density |
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