Direct processing of cellular ceramics from a single red mud precursor

Detalhes bibliográficos
Autor(a) principal: Lopes, Daniela V.
Data de Publicação: 2020
Outros Autores: Durana, Eduardo, Cesconeto, Francielly R., Almeida, Patrícia V., Kovalevsky, Andrei V., Quina, Margarida J., Frade, Jorge R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/37036
Resumo: The feasibility of recycling red mud waste by its direct transformation into highly-porous cellular ceramics was successfully demonstrated. Ceramic materials with designed cellular porosity were processed by emulsification of red mud suspensions with liquid paraffin. Taguchi method was used to study the effects provided by varying the red mud load in the suspension, gelatine content and emulsion stirring time on the micro structural features of the cellular ceramics. Additional experiments analysed the effects of the organic to suspension ratio and firing temperature. Emulsification of paraffin followed by gelatine consolidation, drying, elimination of the droplets of the discontinuous organic phase and firing, allowed one to design cellular ceramic pieces with open porosity up to 75%, consisting in interconnected cells with adjustable cell size and low resistance to percolation. These results allow one to consider prospective applications of red mud-based cellular ceramics with designed microstructures as highly-porous membranes for the capture of pollutants.
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spelling Direct processing of cellular ceramics from a single red mud precursorPorous ceramicsWaste valorisationEmulsificationTaguchi methodThe feasibility of recycling red mud waste by its direct transformation into highly-porous cellular ceramics was successfully demonstrated. Ceramic materials with designed cellular porosity were processed by emulsification of red mud suspensions with liquid paraffin. Taguchi method was used to study the effects provided by varying the red mud load in the suspension, gelatine content and emulsion stirring time on the micro structural features of the cellular ceramics. Additional experiments analysed the effects of the organic to suspension ratio and firing temperature. Emulsification of paraffin followed by gelatine consolidation, drying, elimination of the droplets of the discontinuous organic phase and firing, allowed one to design cellular ceramic pieces with open porosity up to 75%, consisting in interconnected cells with adjustable cell size and low resistance to percolation. These results allow one to consider prospective applications of red mud-based cellular ceramics with designed microstructures as highly-porous membranes for the capture of pollutants.Elsevier2023-04-14T10:42:25Z2020-07-01T00:00:00Z2020-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37036eng0272-884210.1016/j.ceramint.2020.03.244Lopes, Daniela V.Durana, EduardoCesconeto, Francielly R.Almeida, Patrícia V.Kovalevsky, Andrei V.Quina, Margarida J.Frade, Jorge R.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:11:24Zoai:ria.ua.pt:10773/37036Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:07:41.656180Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Direct processing of cellular ceramics from a single red mud precursor
title Direct processing of cellular ceramics from a single red mud precursor
spellingShingle Direct processing of cellular ceramics from a single red mud precursor
Lopes, Daniela V.
Porous ceramics
Waste valorisation
Emulsification
Taguchi method
title_short Direct processing of cellular ceramics from a single red mud precursor
title_full Direct processing of cellular ceramics from a single red mud precursor
title_fullStr Direct processing of cellular ceramics from a single red mud precursor
title_full_unstemmed Direct processing of cellular ceramics from a single red mud precursor
title_sort Direct processing of cellular ceramics from a single red mud precursor
author Lopes, Daniela V.
author_facet Lopes, Daniela V.
Durana, Eduardo
Cesconeto, Francielly R.
Almeida, Patrícia V.
Kovalevsky, Andrei V.
Quina, Margarida J.
Frade, Jorge R.
author_role author
author2 Durana, Eduardo
Cesconeto, Francielly R.
Almeida, Patrícia V.
Kovalevsky, Andrei V.
Quina, Margarida J.
Frade, Jorge R.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Lopes, Daniela V.
Durana, Eduardo
Cesconeto, Francielly R.
Almeida, Patrícia V.
Kovalevsky, Andrei V.
Quina, Margarida J.
Frade, Jorge R.
dc.subject.por.fl_str_mv Porous ceramics
Waste valorisation
Emulsification
Taguchi method
topic Porous ceramics
Waste valorisation
Emulsification
Taguchi method
description The feasibility of recycling red mud waste by its direct transformation into highly-porous cellular ceramics was successfully demonstrated. Ceramic materials with designed cellular porosity were processed by emulsification of red mud suspensions with liquid paraffin. Taguchi method was used to study the effects provided by varying the red mud load in the suspension, gelatine content and emulsion stirring time on the micro structural features of the cellular ceramics. Additional experiments analysed the effects of the organic to suspension ratio and firing temperature. Emulsification of paraffin followed by gelatine consolidation, drying, elimination of the droplets of the discontinuous organic phase and firing, allowed one to design cellular ceramic pieces with open porosity up to 75%, consisting in interconnected cells with adjustable cell size and low resistance to percolation. These results allow one to consider prospective applications of red mud-based cellular ceramics with designed microstructures as highly-porous membranes for the capture of pollutants.
publishDate 2020
dc.date.none.fl_str_mv 2020-07-01T00:00:00Z
2020-07
2023-04-14T10:42:25Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/37036
url http://hdl.handle.net/10773/37036
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0272-8842
10.1016/j.ceramint.2020.03.244
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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