Ozonation as polishing treatment of mature landfill leachate
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/11330 |
Resumo: | Mature landfill leachate is typically resistant to biological processes. In order to enhance the biodegradability of a pre-treated mature landfill leachate, ozonation treatments in a lab-scale column were assayed under different ozone concentrations, contact time, initial pH, and hydrogen peroxide concentrations. Degradation of the landfill leachate by ozone was favoured at higher pH values and with the addition of H2O2, both consistent with the enhanced production of the hydroxyl radical under such conditions. The highest organic reduction and biodegradability improvement was observed with the O3/H2O2 process at 600mgH2O2 L−1. This system was able to remove 63% of chemical oxygen demand (COD), 53% of total organic carbon (TOC), 42% of aromatic content (UV254) and increased the leachate 5-day biochemical oxygen demand (BOD5) to COD ratio from 0.01 to 0.17. Ozone combined with H2O2 contributed significantly to remove and change the recalcitrant organic matter and improved leachate biodegradability, which makes this process very attractive as pre-biological treatment. |
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Ozonation as polishing treatment of mature landfill leachateBiodegradabilityHydrogen peroxideMature landfill leachateOzonepHScience & TechnologyMature landfill leachate is typically resistant to biological processes. In order to enhance the biodegradability of a pre-treated mature landfill leachate, ozonation treatments in a lab-scale column were assayed under different ozone concentrations, contact time, initial pH, and hydrogen peroxide concentrations. Degradation of the landfill leachate by ozone was favoured at higher pH values and with the addition of H2O2, both consistent with the enhanced production of the hydroxyl radical under such conditions. The highest organic reduction and biodegradability improvement was observed with the O3/H2O2 process at 600mgH2O2 L−1. This system was able to remove 63% of chemical oxygen demand (COD), 53% of total organic carbon (TOC), 42% of aromatic content (UV254) and increased the leachate 5-day biochemical oxygen demand (BOD5) to COD ratio from 0.01 to 0.17. Ozone combined with H2O2 contributed significantly to remove and change the recalcitrant organic matter and improved leachate biodegradability, which makes this process very attractive as pre-biological treatment.Fundação para a Ciência e a Tecnologia (FCT)ElsevierUniversidade do MinhoCortez, SusanaTeixeira, P.Oliveira, RosárioMota, M.20102010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/11330eng"Journal of Hazardous Materials". ISSN 0304-3894. 182:1-3 (2010) 730-734.0304-389410.1016/j.jhazmat.2010.06.09520638786info: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:RCAAP2023-07-21T12:01:12Zoai:repositorium.sdum.uminho.pt:1822/11330Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:51:07.860419Repositório 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 |
Ozonation as polishing treatment of mature landfill leachate |
title |
Ozonation as polishing treatment of mature landfill leachate |
spellingShingle |
Ozonation as polishing treatment of mature landfill leachate Cortez, Susana Biodegradability Hydrogen peroxide Mature landfill leachate Ozone pH Science & Technology |
title_short |
Ozonation as polishing treatment of mature landfill leachate |
title_full |
Ozonation as polishing treatment of mature landfill leachate |
title_fullStr |
Ozonation as polishing treatment of mature landfill leachate |
title_full_unstemmed |
Ozonation as polishing treatment of mature landfill leachate |
title_sort |
Ozonation as polishing treatment of mature landfill leachate |
author |
Cortez, Susana |
author_facet |
Cortez, Susana Teixeira, P. Oliveira, Rosário Mota, M. |
author_role |
author |
author2 |
Teixeira, P. Oliveira, Rosário Mota, M. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Cortez, Susana Teixeira, P. Oliveira, Rosário Mota, M. |
dc.subject.por.fl_str_mv |
Biodegradability Hydrogen peroxide Mature landfill leachate Ozone pH Science & Technology |
topic |
Biodegradability Hydrogen peroxide Mature landfill leachate Ozone pH Science & Technology |
description |
Mature landfill leachate is typically resistant to biological processes. In order to enhance the biodegradability of a pre-treated mature landfill leachate, ozonation treatments in a lab-scale column were assayed under different ozone concentrations, contact time, initial pH, and hydrogen peroxide concentrations. Degradation of the landfill leachate by ozone was favoured at higher pH values and with the addition of H2O2, both consistent with the enhanced production of the hydroxyl radical under such conditions. The highest organic reduction and biodegradability improvement was observed with the O3/H2O2 process at 600mgH2O2 L−1. This system was able to remove 63% of chemical oxygen demand (COD), 53% of total organic carbon (TOC), 42% of aromatic content (UV254) and increased the leachate 5-day biochemical oxygen demand (BOD5) to COD ratio from 0.01 to 0.17. Ozone combined with H2O2 contributed significantly to remove and change the recalcitrant organic matter and improved leachate biodegradability, which makes this process very attractive as pre-biological treatment. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010 2010-01-01T00:00:00Z |
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 |
http://hdl.handle.net/1822/11330 |
url |
http://hdl.handle.net/1822/11330 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Journal of Hazardous Materials". ISSN 0304-3894. 182:1-3 (2010) 730-734. 0304-3894 10.1016/j.jhazmat.2010.06.095 20638786 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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1799132282605273088 |