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Pillared clay-based catalysts for treatment of 4-nitrophenol solutions by catalytic wet peroxide oxidation

2023Artigo científico Acesso aberto
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dc.contributor.authorKalmakhanova, Marzhan
dc.contributor.authorNurlybayeva, Aisha Nurlybaevna
dc.contributor.authorSeitbekova, G.A.
dc.contributor.authorNaurzkulova, Symbat Muratbekovna
dc.contributor.authorDíaz de Tuesta, Jose Luis
dc.contributor.authorGomes, Helder
dc.date.accessioned2023-03-24T16:06:58Z
dc.date.available2023-03-24T16:06:58Z
dc.date.issued2023
dc.description.abstractThe constant development of technological processes aggravates the problem of pollution, due to a significant change in the composition of effluents, which makes necessary new (and/or improved) treatment methods and catalytic materials. In this sense, the use of natural clays in the synthesis of low cost pillared clays for application as catalysts in oxidation technologies for the treatment of wastewaters are relevant from an environmental and sustainable point of view. In this work, inexpensive natural clays from different regions of Kazakhstan (Akzhar, Karatau and Kokshetau) were used in the preparation of pillared clays for the catalytic oxidation of organic pollutants with H2O2. Since nitrophenols are commonly found in many types of industrial wastewaters (e.g. plastic, pharmaceutical, paper or pesticides industries), 4-nitrophenol (4-NP) was used as representative model compound in the catalyst screening studies. The pillaring process of the targeted natural clays involved the incorporation of active metals such as Zr,Fe and Cu, which were responsible by increasing the catalytic activity of the materials relatively to the natural clays. High conversions of TOC (85%) and of 4-NP (100%) were obtained with the Zr-pillared clay from the Akzhar region.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationKalmakhanova, Marzhan; Nurlybayeva, Aisha Nurlybaevna; Seitbekova, G.A.; Naurzkulova, Symbat Muratbekovna; Tuesta, José L. Diaz de; Gomes, Helder (2023). Pillared clay-based catalysts for treatment of 4-nitrophenol solutions by catalytic wet peroxide oxidation. Global Nest Journal. ISSN 1790-7632. 25:2, p. 75-80
dc.identifier.doi10.30955/gnj.004311
dc.identifier.issn1790-7632
dc.identifier.urihttp://hdl.handle.net/10198/28065
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherGlobal Network Environmental Science & Technologypt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectNatural clays
dc.subjectPillared clays
dc.subjectCatalytic oxidation
dc.subject4-nitrophenol
dc.subjectWastewater
dc.subjectCWPO
dc.titlePillared clay-based catalysts for treatment of 4-nitrophenol solutions by catalytic wet peroxide oxidationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleGlobal Nest Journalpt_PT
person.familyNameDíaz de Tuesta
person.familyNameGomes
person.givenNameJose Luis
person.givenNameHelder T.
person.identifier.ciencia-id7A1F-022B-7DBF
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0003-2408-087X
person.identifier.orcid0000-0001-6898-2408
person.identifier.ridD-9785-2017
person.identifier.scopus-author-id55755821600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2ad0465f-5f8a-4b14-90f5-bf85996f9ce1
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery2ad0465f-5f8a-4b14-90f5-bf85996f9ce1

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