Optimization of the humification process during composting and recovery evaluation of the humic-like substances

Detalhes bibliográficos
Autor(a) principal: Silva, Maria Elisabete Ferreira
Data de Publicação: 2013
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/6971
Resumo: Doutoramento em Engenharia do Ambiente - Instituto Superior de Agronomia
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spelling Optimization of the humification process during composting and recovery evaluation of the humic-like substancesbioavailabilitycompostheavy metalshumic-like substancesrecoveryDoutoramento em Engenharia do Ambiente - Instituto Superior de AgronomiaThis work aimed to contribute to the knowledge about the formation of humic-like substances (HS-like) during composting and to assess the recovery of these substances from commercial compost with low quality. Several mixtures with raw materials of known composition (wheat flour, dog food) were composted. First, it was studied the influence of mild solvents, sodium and potassium pyrophosphate, in the yield and characteristics of extracted HS-like, as well as in the coextraction of heavy metals from compost. Secondly, it was assessed the influence of raw materials, presence of bulking agent and initial C/N ratio on the humification during composting. Third, commercial composts were used as HS-like source. In all phases, composts and HS-like were characterized using the conventional physical, chemical, stability and maturity parameters. The fractionation of heavy metals was also determined. Results showed that potassium pyrophosphate can be used advantageously for the HS-like extraction. During composting the HS-like content were influenced by presence of carbon rich raw materials and the initial C/N ratio, being their production independently of the composts quality. The HS-like produced from commercial composts showed low level of co-extracted heavy metals, however, the presence of Cu, Cr and Pb can influence negatively their composition.ISAQueda, Ana Cristina Ferreira da CunhaNunes, Olga Cristina PastorLemos, Luis Eugénio Pinto TeixeiraRepositório da Universidade de LisboaSilva, Maria Elisabete Ferreira2014-07-21T10:42:52Z20132013-01-01T00:00:00Zdoctoral thesisinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.5/6971TID:101265492engSilva, M.E.F. - Optimization of the humification process during composting and recovery evaluation of the humic-like substances. Lisboa: ISA, 2013, 117 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:RCAAP2024-11-20T19:12:52Zoai:repositorio.ul.pt:10400.5/6971Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-20T19:12:52Repositório 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 Optimization of the humification process during composting and recovery evaluation of the humic-like substances
title Optimization of the humification process during composting and recovery evaluation of the humic-like substances
spellingShingle Optimization of the humification process during composting and recovery evaluation of the humic-like substances
Silva, Maria Elisabete Ferreira
bioavailability
compost
heavy metals
humic-like substances
recovery
title_short Optimization of the humification process during composting and recovery evaluation of the humic-like substances
title_full Optimization of the humification process during composting and recovery evaluation of the humic-like substances
title_fullStr Optimization of the humification process during composting and recovery evaluation of the humic-like substances
title_full_unstemmed Optimization of the humification process during composting and recovery evaluation of the humic-like substances
title_sort Optimization of the humification process during composting and recovery evaluation of the humic-like substances
author Silva, Maria Elisabete Ferreira
author_facet Silva, Maria Elisabete Ferreira
author_role author
dc.contributor.none.fl_str_mv Queda, Ana Cristina Ferreira da Cunha
Nunes, Olga Cristina Pastor
Lemos, Luis Eugénio Pinto Teixeira
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Silva, Maria Elisabete Ferreira
dc.subject.por.fl_str_mv bioavailability
compost
heavy metals
humic-like substances
recovery
topic bioavailability
compost
heavy metals
humic-like substances
recovery
description Doutoramento em Engenharia do Ambiente - Instituto Superior de Agronomia
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
2014-07-21T10:42:52Z
dc.type.driver.fl_str_mv doctoral thesis
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/6971
TID:101265492
url http://hdl.handle.net/10400.5/6971
identifier_str_mv TID:101265492
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Silva, M.E.F. - Optimization of the humification process during composting and recovery evaluation of the humic-like substances. Lisboa: ISA, 2013, 117 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 mluisa.alvim@gmail.com
_version_ 1817549475106783232

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