Performance evaluation of photolytic and electrochemical oxidation processes for enhanced degradation of food dyes laden wastewater

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dc.contributor.authorSartaj, Seema
dc.contributor.authorAli, Nisar
dc.contributor.authorKhan, Adnan
dc.contributor.authorMalik, Sumeet
dc.contributor.authorBilal, Muhammad
dc.contributor.authorKhan, Menhad
dc.contributor.authorAli, Nauman
dc.contributor.authorHussain, Sajjad
dc.contributor.authorKhan, Hammad
dc.contributor.authorKhan, Sabir [UNESP]
dc.contributor.institutionHuaiyin Institute of Technology
dc.contributor.institutionUniversity of Peshawar
dc.contributor.institutionInstitute of Engineering Sciences and Technology
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-12T02:11:32Z
dc.date.available2020-12-12T02:11:32Z
dc.date.issued2020-03-01
dc.description.abstractWastewater containing dyes is considered as the top-priority pollutant when discharged into the environment. Herein, we report for the applicability of 254 nm ultraviolet light and electrochemical process using a titanium ruthenium oxide anode for the degradation of Allura red and erythrosine dyes. During the photolytic process, 95% of Allura red dye (50 ppm) was removed after 1 h at pH 12 and 35 °C, whereas 90% color removal of erythrosine dye (50 ppm) was achieved after 6 h of treatment at pH 6.0 and 30 °C. On the other hand, 99.60% of Allura red dye (200 ppm) was removed within 5 min by the electrochemical process applying a current density (5 mA cmr2) at pH 5.0 and 0.1 mol L~1 sodium chloride (NaCl) electrolytic medium. Similarly, 99.61% of erythrosine dye (50 ppm) degradation was achieved after 10 min at a current density of 8 mA cmr2, pH 6.0, and 0.1 mol L~1 of NaCl electrolyte. The minimum energy consumption value for Allura red and erythrosine dyes (0.196 and 0.941 kWh m 3, respectively) was calculated at optimum current densities of 5 and 8 mA cmr2 The resultsdemonstrated that the electrochemical process is more efficient at removing dyes in a shorter time than the photolytic process since it generates powerful oxidants like the chlorine molecule, hypochlorous acid, and hypochlorite on the surface of the anode and initiates a chain reaction to oxidize the dyes molecules.en
dc.description.affiliationKey Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province National and Local Joint Engineering Research Center for Deep Utilization Technology of Rock-salt Resource Faculty of Chemical Engineering Huaiyin Institute of Technology
dc.description.affiliationInstitute of Chemical Sciences University of Peshawar
dc.description.affiliationSchool of Life Science and Food Engineering Huaiyin Institute of Technology
dc.description.affiliationFaculty of Materials and Chemical Engineering GIK Institute of Engineering Sciences and Technology
dc.description.affiliationDepartment of Analytical Chemistry Institute of Chemistry State University of São Paulo (UNESP)
dc.description.affiliationUnespDepartment of Analytical Chemistry Institute of Chemistry State University of São Paulo (UNESP)
dc.format.extent971-984
dc.identifierhttp://dx.doi.org/10.2166/wst.2020.182
dc.identifier.citationWater Science and Technology, v. 81, n. 5, p. 971-984, 2020.
dc.identifier.doi10.2166/wst.2020.182
dc.identifier.issn1996-9732
dc.identifier.issn0273-1223
dc.identifier.scopus2-s2.0-85086682685
dc.identifier.urihttp://hdl.handle.net/11449/200619
dc.language.isoeng
dc.relation.ispartofWater Science and Technology
dc.sourceScopus
dc.subjectAllura red
dc.subjectElectrochemical degradation
dc.subjectEnvironmental pollution
dc.subjectErythrosine
dc.subjectOptimization
dc.subjectPhotolysis
dc.titlePerformance evaluation of photolytic and electrochemical oxidation processes for enhanced degradation of food dyes laden wastewateren
dc.typeArtigo

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