Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos

Detalhes bibliográficos
Autor(a) principal: Abreu, M.M.
Data de Publicação: 2010
Outros Autores: Varennes, A., Santos, E.S., Macias, F.
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/2639
Resumo: RAMIRAN International Conference
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spelling Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingosmining areasulfideamendmentsRAMIRAN International ConferenceThe São Domingos mining area is located in the Iberian Pyrite Belt, SE Portugal, and represents a serious environmental hazard (Matos and Martins, 2006). Exploitation dated back to pre-roman and roman times with extraction of Ag, Au and Cu exploitation, mainly in the gossan (resulting from the ore weathering). The intense exploitation started in the middle of 19th century, both in the gossan and sulfide ore-containing Cu, Zn, As and Pb, and lasted until 1960, with the exhaustion of the ore (Quental et al., 2002). Different types of waste materials were left: gossan, host rocks (volcanic with shales, and shales), roman and modern slags, smelting ashes and brittle and blocks of pyrite (Matos, 2004; Álvarez-Valero et al., 2008). All sulfide mine wastes are typically heterogeneous and contain high amounts of trace elements, acidic pH and small contents of organic matter and nutrients. The large dumps containing pyrite and other metal sulfides generate, by oxidation, acidic mine drainage (AMD) which increases the availability of trace elements for microorganisms and plants in the surrounding soils. All of these characteristics contribute towards a system that is barely capable of supporting the establishment or survival of plants. The use of amendments and spontaneous colonization (vegetation) from mining areas (phytostabilization) are cost-effective and environmentally sustainable methods to rehabilitate these contaminated and degraded areas even in arid and semi-arid conditions (Tordoff et al., 2000; Mendez and Maier, 2008). Thus, the preparation of Technosols from mixtures of organic and inorganic wastes can be an attractive option to rehabilitate mining areas because they can improve physical, chemical and biological properties contributing, at the same time, towards a strategy of wastes valorisation (Macías, 2004). The use of mixtures composed of residues with different C:N ratios can be used to manipulate the rate of mineralization. Nevertheless, the amendments used should also promote other soil functions (Arbestain et al., 2008). The objective of this study was to evaluate the influence of cost-effective organic and inorganic amendments, available in the region, in the rehabilitation of sulfide materials from the São Domingos mine areaCordovil, C. e Ferreira, L.Repositório da Universidade de LisboaAbreu, M.M.Varennes, A.Santos, E.S.Macias, F.2010-12-09T14:36:36Z2010-092010-09-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.5/2639eng978-972-8669-47-8info: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:RCAAP2024-11-20T19:06:30Zoai:repositorio.ul.pt:10400.5/2639Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-20T19:06:30Repositório 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 Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
title Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
spellingShingle Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
Abreu, M.M.
mining area
sulfide
amendments
title_short Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
title_full Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
title_fullStr Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
title_full_unstemmed Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
title_sort Evaluation of amendments in the rehabilitation of sulfide mine tailings from São Domingos
author Abreu, M.M.
author_facet Abreu, M.M.
Varennes, A.
Santos, E.S.
Macias, F.
author_role author
author2 Varennes, A.
Santos, E.S.
Macias, F.
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Abreu, M.M.
Varennes, A.
Santos, E.S.
Macias, F.
dc.subject.por.fl_str_mv mining area
sulfide
amendments
topic mining area
sulfide
amendments
description RAMIRAN International Conference
publishDate 2010
dc.date.none.fl_str_mv 2010-12-09T14:36:36Z
2010-09
2010-09-01T00:00:00Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/2639
url http://hdl.handle.net/10400.5/2639
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 978-972-8669-47-8
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 Cordovil, C. e Ferreira, L.
publisher.none.fl_str_mv Cordovil, C. e Ferreira, L.
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
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