Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/238384 |
Resumo: | Melanoidin is a compound produced by food industries and distilleries, which has negative impacts on the water environment due to the high content of dissolved organic carbon and dark color. Consequently, this work aims to study the catalytic properties of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) in the ozonation process to remove melanoidin from water solution. The results show that the reaction rate constant (k) of the melanoidin decolorization process using catalytic ozonation is 1.7 times higher than the non-catalytic ozonation process. The same results were observed for all catalytic materials with no significant difference among them. On the other hand, MLG was the most efficient catalyst in removing total organic carbon. The removal efficiency was 32% for the non-catalytic ozonation process and 63% for the catalytic ozonation using MLG. This increase in efficiency is attributed to a better production of hydroxyl radicals in the presence of MLG, which was confirmed using isopropanol as a radical scavenger. The efficiencies using MoO₂ and MnFe₂O₄ were were 46% and 51%, respectively. The results show that catalytic ozonation by MLG is a promising treatment for melanoidin removal. |
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Mateus, Marcos ViníciusLuz, Mario Sergio daGelamo, Rogério ValentimPoleto, CristianoGonçalves, Julio Cesar de Souza Inácio2022-05-10T04:52:09Z20220104-6632http://hdl.handle.net/10183/238384001140345Melanoidin is a compound produced by food industries and distilleries, which has negative impacts on the water environment due to the high content of dissolved organic carbon and dark color. Consequently, this work aims to study the catalytic properties of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) in the ozonation process to remove melanoidin from water solution. The results show that the reaction rate constant (k) of the melanoidin decolorization process using catalytic ozonation is 1.7 times higher than the non-catalytic ozonation process. The same results were observed for all catalytic materials with no significant difference among them. On the other hand, MLG was the most efficient catalyst in removing total organic carbon. The removal efficiency was 32% for the non-catalytic ozonation process and 63% for the catalytic ozonation using MLG. This increase in efficiency is attributed to a better production of hydroxyl radicals in the presence of MLG, which was confirmed using isopropanol as a radical scavenger. The efficiencies using MoO₂ and MnFe₂O₄ were were 46% and 51%, respectively. The results show that catalytic ozonation by MLG is a promising treatment for melanoidin removal.application/pdfengBrazilian journal of chemical engineering. Vol. 39, n. 1 (Mar. 2022), p. 55-66MelanoidinasPoluentes orgânicosOzonizaçãoCatalisadoresÁguas residuais : TratamentoMelanoidinsCatalytic materialsMultilayer grapheneOzoneFerriteStudy of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation processinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001140345.pdf.txt001140345.pdf.txtExtracted Texttext/plain58188http://www.lume.ufrgs.br/bitstream/10183/238384/2/001140345.pdf.txt1c3793c6efaaf872848510502c9d99b6MD52ORIGINAL001140345.pdfTexto completo (inglês)application/pdf1872224http://www.lume.ufrgs.br/bitstream/10183/238384/1/001140345.pdf465f2a7f3a04ad11cfb768f4417bc662MD5110183/2383842022-05-11 04:50:52.373215oai:www.lume.ufrgs.br:10183/238384Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-05-11T07:50:52Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
title |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
spellingShingle |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process Mateus, Marcos Vinícius Melanoidinas Poluentes orgânicos Ozonização Catalisadores Águas residuais : Tratamento Melanoidins Catalytic materials Multilayer graphene Ozone Ferrite |
title_short |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
title_full |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
title_fullStr |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
title_full_unstemmed |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
title_sort |
Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process |
author |
Mateus, Marcos Vinícius |
author_facet |
Mateus, Marcos Vinícius Luz, Mario Sergio da Gelamo, Rogério Valentim Poleto, Cristiano Gonçalves, Julio Cesar de Souza Inácio |
author_role |
author |
author2 |
Luz, Mario Sergio da Gelamo, Rogério Valentim Poleto, Cristiano Gonçalves, Julio Cesar de Souza Inácio |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Mateus, Marcos Vinícius Luz, Mario Sergio da Gelamo, Rogério Valentim Poleto, Cristiano Gonçalves, Julio Cesar de Souza Inácio |
dc.subject.por.fl_str_mv |
Melanoidinas Poluentes orgânicos Ozonização Catalisadores Águas residuais : Tratamento |
topic |
Melanoidinas Poluentes orgânicos Ozonização Catalisadores Águas residuais : Tratamento Melanoidins Catalytic materials Multilayer graphene Ozone Ferrite |
dc.subject.eng.fl_str_mv |
Melanoidins Catalytic materials Multilayer graphene Ozone Ferrite |
description |
Melanoidin is a compound produced by food industries and distilleries, which has negative impacts on the water environment due to the high content of dissolved organic carbon and dark color. Consequently, this work aims to study the catalytic properties of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) in the ozonation process to remove melanoidin from water solution. The results show that the reaction rate constant (k) of the melanoidin decolorization process using catalytic ozonation is 1.7 times higher than the non-catalytic ozonation process. The same results were observed for all catalytic materials with no significant difference among them. On the other hand, MLG was the most efficient catalyst in removing total organic carbon. The removal efficiency was 32% for the non-catalytic ozonation process and 63% for the catalytic ozonation using MLG. This increase in efficiency is attributed to a better production of hydroxyl radicals in the presence of MLG, which was confirmed using isopropanol as a radical scavenger. The efficiencies using MoO₂ and MnFe₂O₄ were were 46% and 51%, respectively. The results show that catalytic ozonation by MLG is a promising treatment for melanoidin removal. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-05-10T04:52:09Z |
dc.date.issued.fl_str_mv |
2022 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/238384 |
dc.identifier.issn.pt_BR.fl_str_mv |
0104-6632 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001140345 |
identifier_str_mv |
0104-6632 001140345 |
url |
http://hdl.handle.net/10183/238384 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Brazilian journal of chemical engineering. Vol. 39, n. 1 (Mar. 2022), p. 55-66 |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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