Quantification of greenhouse gas emissions from the biodegradation of garden waste

Detalhes bibliográficos
Autor(a) principal: Marinheiro, Joana Filipa Jorge
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/19478
Resumo: Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
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spelling Quantification of greenhouse gas emissions from the biodegradation of garden wastegarden wastenitrous oxidemethanegreenhouse gasesMestrado em Engenharia do Ambiente - Instituto Superior de AgronomiaThe primary aim of this study was to quantify garden waste potential for GHG emissions (with focus on CH4 and N2O); and to identify relationships between these GHG emissions and meteorological variables in different climates. The study was carried out in two countries with contrasting climates and soil structures: Portugal with a Mediterranean climate and Scotland with a hyperoceanic climate. A closed static chamber methodology was used for measure N2O and CH4 gaseous flux in three types of treatments installed in containers kept outdoors: S with soil; S+GW with soil and garden waste layered on top; and GW with only garden waste. The range of N2O fluxes varied on a log-normal scale, ranging from slightly negative values to very high values (3 orders of magnitude). With the exception of the “control” S treatments (maximum flux of 0.54 N2O nmolm-2s-1 at both sites). The percentage of the emitted CO2 equivalent (CO2eq) from the original C content applied to the treatments as garden waste indicates the overall impact on emissions of the composting process. Based on CO2eq global warming potential (GWP) multipliers stated by the IPCC (2014) (25 for CH4 and 298 for N2O), Portugal emitted 28.47% from the treatment S+GW and 11.26% from GW, while the majority of the C remained on soils (>70%). Scotland’s treatment S+GW had a lower CO2eq emission of 11.99%, with 58.47% emitted from the GW treatment. These results show that the overall impact on GWP of composting varies dramatically depending on management, and that CO2 is being converted into considerably high quantities of longer lived GHGs like CH4 and N2O. Cumulative CH4 flux measurements showed sequestration in Portugal and emissions in Scotland, the effects were more pronounced in treatment S for both sites (-210.85 and 209.0519 mgCH4m-2d-1, respectively). The garden waste diminished the emissions for Scotland and hindered the sequestration for Portugal. The contribution of weather conditions from each site was significant and very different relatively to the behaviour of each GHG. Portugal had constant moderate/high temperatures with peaks of rain which stimulated the GHG; Scotland on the other hand had constant rain with low temperatures with occasional rises which was the controlling factor stimulating the GHGISACordovil, CláudiaCowan, NicholasRepositório da Universidade de LisboaMarinheiro, Joana Filipa Jorge2020-01-28T14:28:13Z20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/19478TID:203084233engMarinheiro, J.F.J. - Quantification of greenhouse gas emissions from the biodegradation of garden waste. Lisboa: ISA, 2019, 77 p.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:RCAAP2023-03-06T14:48:57Zoai:www.repository.utl.pt:10400.5/19478Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:04:21.706581Repositório 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 Quantification of greenhouse gas emissions from the biodegradation of garden waste
title Quantification of greenhouse gas emissions from the biodegradation of garden waste
spellingShingle Quantification of greenhouse gas emissions from the biodegradation of garden waste
Marinheiro, Joana Filipa Jorge
garden waste
nitrous oxide
methane
greenhouse gases
title_short Quantification of greenhouse gas emissions from the biodegradation of garden waste
title_full Quantification of greenhouse gas emissions from the biodegradation of garden waste
title_fullStr Quantification of greenhouse gas emissions from the biodegradation of garden waste
title_full_unstemmed Quantification of greenhouse gas emissions from the biodegradation of garden waste
title_sort Quantification of greenhouse gas emissions from the biodegradation of garden waste
author Marinheiro, Joana Filipa Jorge
author_facet Marinheiro, Joana Filipa Jorge
author_role author
dc.contributor.none.fl_str_mv Cordovil, Cláudia
Cowan, Nicholas
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Marinheiro, Joana Filipa Jorge
dc.subject.por.fl_str_mv garden waste
nitrous oxide
methane
greenhouse gases
topic garden waste
nitrous oxide
methane
greenhouse gases
description Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01T00:00:00Z
2020-01-28T14:28:13Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/19478
TID:203084233
url http://hdl.handle.net/10400.5/19478
identifier_str_mv TID:203084233
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Marinheiro, J.F.J. - Quantification of greenhouse gas emissions from the biodegradation of garden waste. Lisboa: ISA, 2019, 77 p.
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 ISA
publisher.none.fl_str_mv ISA
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
repository.mail.fl_str_mv
_version_ 1799131135771410432

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