Vivianite and siderite in lateritic iron crust: an example of bioreduction

Detalhes bibliográficos
Autor(a) principal: LEMOS, Vanda Porpino
Data de Publicação: 2007
Outros Autores: COSTA, Marcondes Lima da, LEMOS, Ronaldo Lima, FARIA, Mario Sergio Gomes de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFPA
Texto Completo: http://repositorio.ufpa.br/jspui/handle/2011/5284
Resumo: Lateritic iron crust (LIC) samples from Padauari (AM) were analysed by XRD, optical microscopy and SEM-EDS. The equilibrium of iron minerals (IM) was studied using Eh-pH diagram. It was shown that the minerals of the LIC are goethite (a-FeOOH), vivianite [Fe3(PO4)2.8H2O] and siderite (FeCO3). Carbonate grains are a solid solution of FeCO3-MnCO3. The LIC presents textures and structures of dissolution of IM. The siderite and vivianite are stable from Eh =-0.3 to 0.0 V and pH=5.0-7.5. These results indicate that vivianite and siderite are products of bioreduction through biogenic dissolution of IM, the new conditions of ecosystems of the Amazon region.
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spelling 2014-07-09T11:56:09Z2014-07-09T11:56:09Z2007-02LEMOS, Vanda Porpino et al. Vivianite and siderite in lateritic iron crust: an example of bioreduction. Química Nova, São Paulo, v. 30, n. 1, p. 36-40, jan./fev. 2007. Disponível em: <http://www.scielo.br/pdf/qn/v30n1/07.pdf>. Acesso em: 28 fev. 2014. <http://dx.doi.org/10.1590/S0100-40422007000100008>.0100-4042http://repositorio.ufpa.br/jspui/handle/2011/5284Lateritic iron crust (LIC) samples from Padauari (AM) were analysed by XRD, optical microscopy and SEM-EDS. The equilibrium of iron minerals (IM) was studied using Eh-pH diagram. It was shown that the minerals of the LIC are goethite (a-FeOOH), vivianite [Fe3(PO4)2.8H2O] and siderite (FeCO3). Carbonate grains are a solid solution of FeCO3-MnCO3. The LIC presents textures and structures of dissolution of IM. The siderite and vivianite are stable from Eh =-0.3 to 0.0 V and pH=5.0-7.5. These results indicate that vivianite and siderite are products of bioreduction through biogenic dissolution of IM, the new conditions of ecosystems of the Amazon region.engMinérios de ferroVivianiteSideritaFerro lateríticoBioreduçãoDifração de raio XMicroscopia óticaGoetiteAmazônia brasileiraVivianite and siderite in lateritic iron crust: an example of bioreductioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleLEMOS, Vanda PorpinoCOSTA, Marcondes Lima daLEMOS, Ronaldo LimaFARIA, Mario Sergio Gomes deinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFPAinstname:Universidade Federal do Pará (UFPA)instacron:UFPAORIGINALArtigo_VivianiteSideriteLateritic.pdfArtigo_VivianiteSideriteLateritic.pdfapplication/pdf509546http://repositorio.ufpa.br/oai/bitstream/2011/5284/1/Artigo_VivianiteSideriteLateritic.pdf5f1a442ccec9581ba9372b945c2ecb88MD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-849http://repositorio.ufpa.br/oai/bitstream/2011/5284/2/license_url4afdbb8c545fd630ea7db775da747b2fMD52license_textlicense_texttext/html; charset=utf-821936http://repositorio.ufpa.br/oai/bitstream/2011/5284/3/license_text9833653f73f7853880c94a6fead477b1MD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-823148http://repositorio.ufpa.br/oai/bitstream/2011/5284/4/license_rdf9da0b6dfac957114c6a7714714b86306MD54LICENSElicense.txtlicense.txttext/plain; charset=utf-81775http://repositorio.ufpa.br/oai/bitstream/2011/5284/5/license.txta930293e49ae6e6b5c49a341d4a36286MD55TEXTArtigo_VivianiteSideriteLateritic.pdf.txtArtigo_VivianiteSideriteLateritic.pdf.txtExtracted texttext/plain21245http://repositorio.ufpa.br/oai/bitstream/2011/5284/6/Artigo_VivianiteSideriteLateritic.pdf.txt177f77c2dd9f5bbcf77166bb2d40fd38MD562011/52842019-05-22 09:32:02.239oai:repositorio.ufpa.br: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Repositório InstitucionalPUBhttp://repositorio.ufpa.br/oai/requestriufpabc@ufpa.bropendoar:21232019-05-22T12:32:02Repositório Institucional da UFPA - Universidade Federal do Pará (UFPA)false
dc.title.pt_BR.fl_str_mv Vivianite and siderite in lateritic iron crust: an example of bioreduction
title Vivianite and siderite in lateritic iron crust: an example of bioreduction
spellingShingle Vivianite and siderite in lateritic iron crust: an example of bioreduction
LEMOS, Vanda Porpino
Minérios de ferro
Vivianite
Siderita
Ferro laterítico
Bioredução
Difração de raio X
Microscopia ótica
Goetite
Amazônia brasileira
title_short Vivianite and siderite in lateritic iron crust: an example of bioreduction
title_full Vivianite and siderite in lateritic iron crust: an example of bioreduction
title_fullStr Vivianite and siderite in lateritic iron crust: an example of bioreduction
title_full_unstemmed Vivianite and siderite in lateritic iron crust: an example of bioreduction
title_sort Vivianite and siderite in lateritic iron crust: an example of bioreduction
author LEMOS, Vanda Porpino
author_facet LEMOS, Vanda Porpino
COSTA, Marcondes Lima da
LEMOS, Ronaldo Lima
FARIA, Mario Sergio Gomes de
author_role author
author2 COSTA, Marcondes Lima da
LEMOS, Ronaldo Lima
FARIA, Mario Sergio Gomes de
author2_role author
author
author
dc.contributor.author.fl_str_mv LEMOS, Vanda Porpino
COSTA, Marcondes Lima da
LEMOS, Ronaldo Lima
FARIA, Mario Sergio Gomes de
dc.subject.por.fl_str_mv Minérios de ferro
Vivianite
Siderita
Ferro laterítico
Bioredução
Difração de raio X
Microscopia ótica
Goetite
Amazônia brasileira
topic Minérios de ferro
Vivianite
Siderita
Ferro laterítico
Bioredução
Difração de raio X
Microscopia ótica
Goetite
Amazônia brasileira
description Lateritic iron crust (LIC) samples from Padauari (AM) were analysed by XRD, optical microscopy and SEM-EDS. The equilibrium of iron minerals (IM) was studied using Eh-pH diagram. It was shown that the minerals of the LIC are goethite (a-FeOOH), vivianite [Fe3(PO4)2.8H2O] and siderite (FeCO3). Carbonate grains are a solid solution of FeCO3-MnCO3. The LIC presents textures and structures of dissolution of IM. The siderite and vivianite are stable from Eh =-0.3 to 0.0 V and pH=5.0-7.5. These results indicate that vivianite and siderite are products of bioreduction through biogenic dissolution of IM, the new conditions of ecosystems of the Amazon region.
publishDate 2007
dc.date.issued.fl_str_mv 2007-02
dc.date.accessioned.fl_str_mv 2014-07-09T11:56:09Z
dc.date.available.fl_str_mv 2014-07-09T11:56:09Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.citation.fl_str_mv LEMOS, Vanda Porpino et al. Vivianite and siderite in lateritic iron crust: an example of bioreduction. Química Nova, São Paulo, v. 30, n. 1, p. 36-40, jan./fev. 2007. Disponível em: <http://www.scielo.br/pdf/qn/v30n1/07.pdf>. Acesso em: 28 fev. 2014. <http://dx.doi.org/10.1590/S0100-40422007000100008>.
dc.identifier.uri.fl_str_mv http://repositorio.ufpa.br/jspui/handle/2011/5284
dc.identifier.issn.none.fl_str_mv 0100-4042
identifier_str_mv LEMOS, Vanda Porpino et al. Vivianite and siderite in lateritic iron crust: an example of bioreduction. Química Nova, São Paulo, v. 30, n. 1, p. 36-40, jan./fev. 2007. Disponível em: <http://www.scielo.br/pdf/qn/v30n1/07.pdf>. Acesso em: 28 fev. 2014. <http://dx.doi.org/10.1590/S0100-40422007000100008>.
0100-4042
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