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Total control of chromium in tanneries – thermal decomposition of filtration cake from enzymatic hydrolysis of chrome shavings

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dc.title Total control of chromium in tanneries – thermal decomposition of filtration cake from enzymatic hydrolysis of chrome shavings en
dc.contributor.author Kocurek, Pavel
dc.contributor.author Kolomazník, Karel
dc.contributor.author Bařinová, Michaela
dc.contributor.author Hendrych, Jiří
dc.relation.ispartof Waste Management and Research
dc.identifier.issn 0734-242X Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 35
utb.relation.issue 4
dc.citation.spage 444
dc.citation.epage 449
dc.type article
dc.language.iso en
dc.publisher SAGE Publications Ltd.
dc.identifier.doi 10.1177/0734242X16680728
dc.relation.uri http://journals.sagepub.com/doi/abs/10.1177/0734242X16680728
dc.subject alkaline enzymatic hydrolysis en
dc.subject chrome shavings en
dc.subject chromium filtration cake en
dc.subject chromium recycling en
dc.subject Leather waste en
dc.subject thermal decomposition en
dc.description.abstract This paper deals with the problem of chromium recovery from chrome-tanned waste and thus with reducing the environmental impact of the leather industry. Chrome-tanned waste was transformed by alkaline enzymatic hydrolysis promoted by magnesium oxide into practically chromium-free, commercially applicable collagen hydrolysate and filtration cake containing a high portion of chromium. The crude and magnesium-deprived chromium cakes were subjected to a process of thermal decomposition at 650°C under oxygen-free conditions to reduce the amount of this waste and to study the effect of magnesium removal on the resulting products. Oxygen-free conditions were applied in order to prevent the oxidation of trivalent chromium into the hazardous hexavalent form. Thermal decomposition products from both crude and magnesium-deprived chrome cakes were characterized by high chromium content over 50%, which occurred as eskolaite (Cr2O3) and magnesiochromite (MgCr2O4) crystal phases, respectively. Thermal decomposition decreased the amount of chrome cake dry feed by 90%. Based on the performed experiments, a scheme for the total control of chromium in the leather industry was designed. © 2016, © The Author(s) 2016. en
utb.faculty Faculty of Applied Informatics
dc.identifier.uri http://hdl.handle.net/10563/1007362
utb.identifier.obdid 43876472
utb.identifier.scopus 2-s2.0-85018982946
utb.identifier.wok 000400132700012
utb.identifier.pubmed 27932548
utb.identifier.coden WMARD
utb.source j-scopus
dc.date.accessioned 2017-09-08T12:14:45Z
dc.date.available 2017-09-08T12:14:45Z
dc.description.sponsorship Ministry of Education of the Czech Republic [MSMT-7778/2014]; European Regional Development Fund under the Project CEBIA-Tech [CZ.1.05/2.1.00/03.0089]; [MSM6046137308]
utb.contributor.internalauthor Kocurek, Pavel
utb.contributor.internalauthor Kolomazník, Karel
utb.contributor.internalauthor Bařinová, Michaela
utb.fulltext.affiliation P Kocurek1, K Kolomazník1, M Bařinová1 and J Hendrych2 1 Department of Automation and Control Engineering, Faculty of Applied Informatics, Tomas Bata University in Zlín, Nad Stráněmi 4511, 76005 Zlín, Czech Republic 2 Department of Environmental Chemistry, Faculty of Environmental Technology, University of Chemistry and Technology, Prague, Technická 5, 16628, Prague 6, Czech Republic Corresponding author: P Kocurek, Tomas Bata University in Zlín, Faculty of Applied Informatics, Department of Automation and Control Engineering, Nad Stráněmi 4511, 76005, Zlín, Czech Republic. Email: kocurek@fai.utb.cz
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utb.fulltext.sponsorship The authors disclosed receipt of the following financial support for the research, authorship and/or publication of this article: The work was performed with financial support of research project NPU I No. MSMT-7778/2014 by the Ministry of Education of the Czech Republic and also by the European Regional Development Fund under the Project CEBIA-Tech No. CZ.1.05/2.1.00/03.0089. This work was also supported by grant No. MSM6046137308.
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