REMOVAL OF AROMATIC AMINES DERIVED FROM AZO DYES IN LINING LEATHERS BY OXIDATIVE BLEACHES

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dc.contributor.authorYorgancioglu, Ali
dc.contributor.authorOnem, Ersin
dc.date.accessioned2019-10-27T09:47:24Z
dc.date.available2019-10-27T09:47:24Z
dc.date.issued2019
dc.departmentEge Üniversitesien_US
dc.description.abstractEnvironmental aspects and ecological production has become a great challenge for leather industry. In this study, the possibility to regain of leathers consisting highly rate of harmful azo colorants were investigated. Sodium perborate, sodium percarbonate and hydrogen peroxide as oxidative bleaches were used for the removal of azo dyes in leather. Leathers were firstly bleached at the pilot scale. Color measurements of the leathers were carried out with spectrophotometric method following the bleaching processes. As a result of the calculation of color differences (Delta E), 7% sodium perborate were elicited as optimum parameter on the bleaching effect. After determining the optimal bleach at the pilot scale, bleaching and re-dyeing processes were performed on the batch production. With the bleaching process, 35 ppm of azo dye content in leather according to ISO 17234-1 standard method was reduced under 5 ppm. Chromium(VI) formation on bleached leather samples have been examined with UV-Visible spectrophotometer at 540 nm according to EN ISO 17075 standard. Textural changes on the leathers after bleaching process were also observed by strength tests and scanning electron microscope (SEM) analysis. According to the findings of the research, Cr(VI) contents were detected under 3 ppm and strength properties of leathers showed slightly decreases not in the statistically remarkable levels. By this practically applicable way in the industrial scale, resellability of the leathers was ensured and thus, the potential danger of banned arylamine compounds which are an important problem in ecological production and eco-labeling of leather has been eliminated.en_US
dc.description.sponsorshipT.R. Ministry of DevelopmentTurkiye Cumhuriyeti Kalkinma Bakanligien_US
dc.description.sponsorshipThe authors would like to thank Ata Dilek Leather Company for the technical assistance and financial support they provided. The authors also acknowledge the project of "Industrial Doctorate Program of Textile and Leather -2007 DPT 001" supported by T.R. Ministry of Development.en_US
dc.identifier.endpage5945en_US
dc.identifier.issn1018-4619
dc.identifier.issn1610-2304
dc.identifier.issn1018-4619en_US
dc.identifier.issn1610-2304en_US
dc.identifier.issue8en_US
dc.identifier.startpage5937en_US
dc.identifier.urihttps://hdl.handle.net/11454/29399
dc.identifier.volume28en_US
dc.identifier.wosWOS:000480511400027en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherParlar Scientific Publications (P S P)en_US
dc.relation.ispartofFresenius Environmental Bulletinen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectLeatheren_US
dc.subjectazo dyesen_US
dc.subjectaromatic aminesen_US
dc.subjectoxidative bleachesen_US
dc.subjectsodium perborateen_US
dc.titleREMOVAL OF AROMATIC AMINES DERIVED FROM AZO DYES IN LINING LEATHERS BY OXIDATIVE BLEACHESen_US
dc.typeArticleen_US

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