Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent

Detalhes bibliográficos
Autor(a) principal: Carmen Rodrigues
Data de Publicação: 2008
Outros Autores: Nídia Caetano, Hélder Durão
Tipo de documento: Livro
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://repositorio-aberto.up.pt/handle/10216/7110
Resumo: The aim of this work was to study the possibility of treating an industrial semiconductor wastewater by combining physical and chemical methods. The combined treatment consisted of pH adjustment to 2 followed by filtration and then chemical oxidation with Fenton reagent over the resulting filtered wastewater. In chemical oxidation treatment, the isolated effect of the variables on the degradation of the organic compounds - measured by chemical oxygen demand (COD) removal - was first studied: pH (3 to 5), reaction time (0.25 to 5 hours), hydrogen peroxide concentration (2.1 to 5.9 M) and FeSO4: H2O2 mass ratio (1:5 to 3:2). Higher COD removal (75%) was obtained when a pH value of 3, reaction time of 4 hours, hydrogen peroxide concentration of 4.2 M and FeSO4: H2O2 mass ratio of 1:5 were used. The global efficiency of COD removal by combination of the two treatments was 80%. The influence of three variables and their interactions was evaluated, using an experimental design of the type 23. The design also allowed the conclusion that reaction time has a statistical meaning.
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spelling Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagentEngenharia química, Engenharia químicaChemical engineering, Chemical engineeringThe aim of this work was to study the possibility of treating an industrial semiconductor wastewater by combining physical and chemical methods. The combined treatment consisted of pH adjustment to 2 followed by filtration and then chemical oxidation with Fenton reagent over the resulting filtered wastewater. In chemical oxidation treatment, the isolated effect of the variables on the degradation of the organic compounds - measured by chemical oxygen demand (COD) removal - was first studied: pH (3 to 5), reaction time (0.25 to 5 hours), hydrogen peroxide concentration (2.1 to 5.9 M) and FeSO4: H2O2 mass ratio (1:5 to 3:2). Higher COD removal (75%) was obtained when a pH value of 3, reaction time of 4 hours, hydrogen peroxide concentration of 4.2 M and FeSO4: H2O2 mass ratio of 1:5 were used. The global efficiency of COD removal by combination of the two treatments was 80%. The influence of three variables and their interactions was evaluated, using an experimental design of the type 23. The design also allowed the conclusion that reaction time has a statistical meaning.20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bookapplication/pdfhttps://repositorio-aberto.up.pt/handle/10216/7110engCarmen RodriguesNídia CaetanoHélder Durãoinfo: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:RCAAP2023-11-29T13:32:53Zoai:repositorio-aberto.up.pt:10216/7110Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:42:23.891074Repositório 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 Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
title Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
spellingShingle Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
Carmen Rodrigues
Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
title_short Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
title_full Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
title_fullStr Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
title_full_unstemmed Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
title_sort Experimental design to optimize degradation of organic compounds in wastewater from semiconductor industry using fenton reagent
author Carmen Rodrigues
author_facet Carmen Rodrigues
Nídia Caetano
Hélder Durão
author_role author
author2 Nídia Caetano
Hélder Durão
author2_role author
author
dc.contributor.author.fl_str_mv Carmen Rodrigues
Nídia Caetano
Hélder Durão
dc.subject.por.fl_str_mv Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
topic Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
description The aim of this work was to study the possibility of treating an industrial semiconductor wastewater by combining physical and chemical methods. The combined treatment consisted of pH adjustment to 2 followed by filtration and then chemical oxidation with Fenton reagent over the resulting filtered wastewater. In chemical oxidation treatment, the isolated effect of the variables on the degradation of the organic compounds - measured by chemical oxygen demand (COD) removal - was first studied: pH (3 to 5), reaction time (0.25 to 5 hours), hydrogen peroxide concentration (2.1 to 5.9 M) and FeSO4: H2O2 mass ratio (1:5 to 3:2). Higher COD removal (75%) was obtained when a pH value of 3, reaction time of 4 hours, hydrogen peroxide concentration of 4.2 M and FeSO4: H2O2 mass ratio of 1:5 were used. The global efficiency of COD removal by combination of the two treatments was 80%. The influence of three variables and their interactions was evaluated, using an experimental design of the type 23. The design also allowed the conclusion that reaction time has a statistical meaning.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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