Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap

In order to explore new options to optimize the low-grade copper ore bioleaching process, it is important to understand the kinetics of microbial oxidation at industrial level. This work studies the changes of iron and sulfur oxidation rates of microbial communities in Solution from an industrial lo...

Descripción completa

Detalles Bibliográficos
Autores: Meneses-Villegas, Claudio, Demergasso-Semenzato, Cecilia, Seron-Tapia, Marco, Galleguillos-Pérez, Pedro, Soto-Soto, Pamela
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/198030
Acceso en línea:https://hdl.handle.net/10533/198030
Access Level:acceso abierto
id CL_f1be21d46b72d1020028dc99f774904a
oai_identifier_str oai:repositorio.anid.cl:10533/198030
network_acronym_str CL
network_name_str Chile
repository_id_str
spelling Soto-Soto, PamelaGalleguillos-Pérez, PedroSeron-Tapia, MarcoDemergasso-Semenzato, CeciliaMeneses-Villegas, Claudio20090https://hdl.handle.net/10533/198030http://purl.org/coar/access_right/c_abf2Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap6259CHESTAFA-ZURICHMeneses-Villegas, ClaudioDemergasso-Semenzato, CeciliaSeron-Tapia, MarcoGalleguillos-Pérez, PedroSoto-Soto, Pamela2017-04-27T18:54:02Z2022-07-07T02:28:11Z2017-04-27T18:54:02Z2022-07-07T02:28:11Z2009In order to explore new options to optimize the low-grade copper ore bioleaching process, it is important to understand the kinetics of microbial oxidation at industrial level. This work studies the changes of iron and sulfur oxidation rates of microbial communities in Solution from an industrial low grade copper bioleaching heap process at Escondida Mine in Chile. Pregnant leach Solution (PLS) samples were analyzed periodically to determine physico-chemical parameters. The total numbers of the different microorganism species in industrial samples were determined by Real Time PCR. In addition, Most Probable Number assays (MPN) were performed for iron and sulfur oxidizing microorganisms. Kinetics incubation tests of PLS in the presence of iron or sulfur were performed to study the iron and sulfur oxidation, in total, 102 oxidation profile tests were obtained. Based on the oxidation profiles obtained, the tests were divided into four groups, labeled as fast, normal, stepped shape, and incomplete. The grouping system was established by considering oxidation time and rates, during the initial oxidation stages and accounted for any lag phase. A data mining technique, called decision trees was used to analyze the data and to generate rules that represented patterns in the data. Strong correlations were found between the predominant microorgan isms and the behavior of the oxidation tests. Preliminary results indicate that the magnitude order of MPN of the iron oxidizing microorganisms is all important factor in the microbial oxidizing activity, followed by the predominant specie within the microbial population, PLS temperature and Eh.02FONDEFpamelasoto@ucn.cl; cmeneses@ucn.cl; ycontador@ucn.cl; pgallegu@ucn.cl; cdemerga@ucn.cl; maseron@ucn.cl0FONDEF730D04I1169D04I1169virtual::15640-1WOS:000273541600010WOS:0002735416000101022-6680https://hdl.handle.net/10533/198030TRANS TECH PUBLICATIONS LTDinstname: Conicytreponame: Repositorio Digital RI2.0instname: Conicytreponame: Repositorio Digital RI2.0010.4028/www.scientific.net/AMR.71-73.59info:eu-repo/grantAgreement/Fondef/D04I1169info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477https://doi.org/10.4028/www.scientific.net/AMR.71-73.59info:eu-repo/semantics/openAccessCharacterization of oxidizing activity of a microbial community in an industrial bioleaching heapADVANCED MATERIALS RESEARCHADV MAT RES Articuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionengArticulohttps://hdl.handle.net/10533/198030FONDEFhttp://purl.org/coar/resource_type/c_2df8fbb117f6ef8c-0a2d-4057-98aa-80ef4e80efd3virtual::15640-117f6ef8c-0a2d-4057-98aa-80ef4e80efd3virtual::15640-110533/198030oai:repositorio.anid.cl:10533/1980302023-07-24 18:39:53.462https://repositorio.anid.clRepositorio ANIDaletelier@anid.cl
dc.title.none.fl_str_mv Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
dc.title.journal.none.fl_str_mv ADVANCED MATERIALS RESEARCH
dc.title.journalabbreviation.none.fl_str_mv ADV MAT RES 
title Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
spellingShingle Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
Meneses-Villegas, Claudio
title_short Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
title_full Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
title_fullStr Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
title_full_unstemmed Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
title_sort Characterization of oxidizing activity of a microbial community in an industrial bioleaching heap
dc.creator.none.fl_str_mv Meneses-Villegas, Claudio
Demergasso-Semenzato, Cecilia
Seron-Tapia, Marco
Galleguillos-Pérez, Pedro
Soto-Soto, Pamela
author Meneses-Villegas, Claudio
author_facet Meneses-Villegas, Claudio
Demergasso-Semenzato, Cecilia
Seron-Tapia, Marco
Galleguillos-Pérez, Pedro
Soto-Soto, Pamela
author_role author
author2 Demergasso-Semenzato, Cecilia
Seron-Tapia, Marco
Galleguillos-Pérez, Pedro
Soto-Soto, Pamela
author2_role author
author
author
author
description In order to explore new options to optimize the low-grade copper ore bioleaching process, it is important to understand the kinetics of microbial oxidation at industrial level. This work studies the changes of iron and sulfur oxidation rates of microbial communities in Solution from an industrial low grade copper bioleaching heap process at Escondida Mine in Chile. Pregnant leach Solution (PLS) samples were analyzed periodically to determine physico-chemical parameters. The total numbers of the different microorganism species in industrial samples were determined by Real Time PCR. In addition, Most Probable Number assays (MPN) were performed for iron and sulfur oxidizing microorganisms. Kinetics incubation tests of PLS in the presence of iron or sulfur were performed to study the iron and sulfur oxidation, in total, 102 oxidation profile tests were obtained. Based on the oxidation profiles obtained, the tests were divided into four groups, labeled as fast, normal, stepped shape, and incomplete. The grouping system was established by considering oxidation time and rates, during the initial oxidation stages and accounted for any lag phase. A data mining technique, called decision trees was used to analyze the data and to generate rules that represented patterns in the data. Strong correlations were found between the predominant microorgan isms and the behavior of the oxidation tests. Preliminary results indicate that the magnitude order of MPN of the iron oxidizing microorganisms is all important factor in the microbial oxidizing activity, followed by the predominant specie within the microbial population, PLS temperature and Eh.
publishDate 2009
dc.date.issued.none.fl_str_mv 2009
dc.date.accessioned.none.fl_str_mv 2017-04-27T18:54:02Z
2022-07-07T02:28:11Z
dc.date.available.none.fl_str_mv 2017-04-27T18:54:02Z
2022-07-07T02:28:11Z
dc.type.none.fl_str_mv Articulo
dc.type.driver.none.fl_str_mv info:eu-repo/semantics/article
dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.eissn.none.fl_str_mv 0
dc.identifier.folio.none.fl_str_mv D04I1169
D04I1169
dc.identifier.idwos.none.fl_str_mv WOS:000273541600010
dc.identifier.isi.none.fl_str_mv WOS:000273541600010
dc.identifier.issn.none.fl_str_mv 1022-6680
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/198030
identifier_str_mv 0
D04I1169
WOS:000273541600010
1022-6680
url https://hdl.handle.net/10533/198030
dc.language.*.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv instname: Conicyt
reponame: Repositorio Digital RI2.0
instname: Conicyt
reponame: Repositorio Digital RI2.0
dc.relation.doi.none.fl_str_mv 0
10.4028/www.scientific.net/AMR.71-73.59
dc.relation.projectid.none.fl_str_mv info:eu-repo/grantAgreement/Fondef/D04I1169
dc.relation.set.none.fl_str_mv info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relation.uri.none.fl_str_mv https://doi.org/10.4028/www.scientific.net/AMR.71-73.59
dc.rights.driver.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.coverage.spatial.none.fl_str_mv STAFA-ZURICH
dc.publisher.none.fl_str_mv TRANS TECH PUBLICATIONS LTD
publisher.none.fl_str_mv TRANS TECH PUBLICATIONS LTD
repository.name.fl_str_mv Repositorio ANID
repository.mail.fl_str_mv aletelier@anid.cl
_version_ 1843518596125294592
score 15.812455

Similares en LA Referencia