Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/20.500.12207/5605 |
Resumo: | Some integrated processes to deal with landfill leachates have been investigated and their efficiencies expressed in terms of chemical oxygen demand (COD) removal. The systems tested were the result of different combinations of the following single stages: acidic pH shift (elimination of humic substances), ozonation (O3), coagulation-flocculation with Fe(III) salts, Fenton's oxidation (Fe(III) + H2O2), wet air oxidation (with or without radical promoters), and adsorption onto activated carbon (commercial Norit 0.8 powdered activated carbon). COD removals obtained ranged in the interval of 80-96% for initial COD values close to 11000 mg L-1. None of the processes tested reduced the COD levels sufficiently to allow direct discharge; however, the ratio biochemical oxygen demand (BOD/COD was significantly increased (up to 1000% in some cases, i.e., from 0.1 to values above 1.0). Total carbon reduction achieved ranged from 60 to 94%, while complete decolorization (measured as the absorbance at 410 nm) was obtained in practically all the combinations investigated |
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Study of different integrated physical-chemical + adsorption processes for landfill leachate remediationProcessos físico-químicosProcessos de absorçãoAterro sanitárioEngenharia químicaIndústriaProcessos de biodegradaçãoSome integrated processes to deal with landfill leachates have been investigated and their efficiencies expressed in terms of chemical oxygen demand (COD) removal. The systems tested were the result of different combinations of the following single stages: acidic pH shift (elimination of humic substances), ozonation (O3), coagulation-flocculation with Fe(III) salts, Fenton's oxidation (Fe(III) + H2O2), wet air oxidation (with or without radical promoters), and adsorption onto activated carbon (commercial Norit 0.8 powdered activated carbon). COD removals obtained ranged in the interval of 80-96% for initial COD values close to 11000 mg L-1. None of the processes tested reduced the COD levels sufficiently to allow direct discharge; however, the ratio biochemical oxygen demand (BOD/COD was significantly increased (up to 1000% in some cases, i.e., from 0.1 to values above 1.0). Total carbon reduction achieved ranged from 60 to 94%, while complete decolorization (measured as the absorbance at 410 nm) was obtained in practically all the combinations investigatedAmerican Chemical Society2022-10-07T16:02:00Z2005-04-13T00:00:00Z2005-04-13T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.12207/5605eng1520-5045https://doi.org/10.1021/ie049066jJavier Rivas, F.Beltrán, F.Carvalho, F.Gimeno, O.Frades, J.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:RCAAP2022-10-13T07:45:14Zoai:repositorio.ipbeja.pt:20.500.12207/5605Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:11:26.019803Repositório 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 |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
title |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
spellingShingle |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation Javier Rivas, F. Processos físico-químicos Processos de absorção Aterro sanitário Engenharia química Indústria Processos de biodegradação |
title_short |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
title_full |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
title_fullStr |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
title_full_unstemmed |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
title_sort |
Study of different integrated physical-chemical + adsorption processes for landfill leachate remediation |
author |
Javier Rivas, F. |
author_facet |
Javier Rivas, F. Beltrán, F. Carvalho, F. Gimeno, O. Frades, J. |
author_role |
author |
author2 |
Beltrán, F. Carvalho, F. Gimeno, O. Frades, J. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Javier Rivas, F. Beltrán, F. Carvalho, F. Gimeno, O. Frades, J. |
dc.subject.por.fl_str_mv |
Processos físico-químicos Processos de absorção Aterro sanitário Engenharia química Indústria Processos de biodegradação |
topic |
Processos físico-químicos Processos de absorção Aterro sanitário Engenharia química Indústria Processos de biodegradação |
description |
Some integrated processes to deal with landfill leachates have been investigated and their efficiencies expressed in terms of chemical oxygen demand (COD) removal. The systems tested were the result of different combinations of the following single stages: acidic pH shift (elimination of humic substances), ozonation (O3), coagulation-flocculation with Fe(III) salts, Fenton's oxidation (Fe(III) + H2O2), wet air oxidation (with or without radical promoters), and adsorption onto activated carbon (commercial Norit 0.8 powdered activated carbon). COD removals obtained ranged in the interval of 80-96% for initial COD values close to 11000 mg L-1. None of the processes tested reduced the COD levels sufficiently to allow direct discharge; however, the ratio biochemical oxygen demand (BOD/COD was significantly increased (up to 1000% in some cases, i.e., from 0.1 to values above 1.0). Total carbon reduction achieved ranged from 60 to 94%, while complete decolorization (measured as the absorbance at 410 nm) was obtained in practically all the combinations investigated |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-04-13T00:00:00Z 2005-04-13T00:00:00Z 2022-10-07T16:02:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/20.500.12207/5605 |
url |
https://hdl.handle.net/20.500.12207/5605 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1520-5045 https://doi.org/10.1021/ie049066j |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130569695559680 |