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Clostridia Initiate Heavy Metal Bioremoval in Mixed Sulfidogenic Cultures

2014-03-18Journal article Open access
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dc.contributor.authorAlexandrino, Maria
dc.contributor.authorCosta, Rodrigo
dc.contributor.authorCanario, Adelino V. M.
dc.contributor.authorCosta, Maria Clara
dc.date.accessioned2014-09-18T10:55:55Z
dc.date.available2015-03-18T01:30:06Z
dc.date.issued2014-03-18
dc.description.abstractSulfate reducing bacteria (SRB) are widely used for attenuating heavy metal pollution by means of sulfide generation. Due to their low metal tolerance, several SRB species depend on associated bacteria in mixed cultures to cope with metal-induced stress. Yet the identity of the SRB protecting bacteria is largely unknown. We aimed to identify these associated bacteria and their potential role in two highly metal-resistant mixed SRB cultures by comparing bacterial community composition and SRB activity between these cultures and two sensitive ones. The SRB composition in the resistant and sensitive consortia was similar. However, whereas the SRB in the sensitive cultures were strongly inhibited by a mixture of copper, zinc, and iron, no influence of these metals was detected on SRB growth and activity in the resistant cultures. In the latter, a Gram-positive population mostly assigned to Clostridium spp.initiated heavy metal bioremoval based on sulfide generation from components of the medium (mainly sulfite) but not from sulfate. After metal levels were lowered by the Clostridium spp. populations, SRB started sulfate reduction and raised the pH of the medium. The combination of sulfite reducing Clostridium spp. with SRB may improve green technologies for removal of heavy metals.por
dc.identifier.citationMaria Alexandrino, Rodrigo Costa, Adelino V. M. Canário, and Maria C. Costa. (2014). Clostridia Initiate Heavy Metal Bioremoval in Mixed Sulfidogenic Cultures, Environmental Science and Technology, 3378-3385, dx.doi.org/10.1021/es4052044por
dc.identifier.doihttp://dx.doi.org/10.1021/es4052044
dc.identifier.issn0013-936X
dc.identifier.otherAUT: ACA00258; MCO01181;
dc.identifier.urihttp://hdl.handle.net/10400.1/4981
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherACS Publicationspor
dc.relation.publisherversionhttp://pubs.acs.org/toc/esthag/2014por
dc.titleClostridia Initiate Heavy Metal Bioremoval in Mixed Sulfidogenic Culturespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage3385por
oaire.citation.issue6por
oaire.citation.startPage3378por
oaire.citation.titleEnviornmental Science and Technologypor
oaire.citation.volume48por
person.familyNameda Silva Costa
person.familyNameCanario
person.familyNameCosta
person.givenNameRodrigo
person.givenNameAdelino
person.givenNameMaria Clara
person.identifier115920
person.identifier143624
person.identifier.ciencia-id5917-D500-D251
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.ciencia-id7110-A28E-3C8A
person.identifier.orcid0000-0002-5932-4101
person.identifier.orcid0000-0002-6244-6468
person.identifier.orcid0000-0003-1340-5237
person.identifier.ridN-7274-2013
person.identifier.ridC-7942-2009
person.identifier.ridM-6189-2013
person.identifier.scopus-author-id7203063627
person.identifier.scopus-author-id56568523700
person.identifier.scopus-author-id35354952400
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication4495127c-16f2-4231-9fc1-b471c661036b
relation.isAuthorOfPublication5f6e51ee-9113-469e-8b9e-f30f2d452521
relation.isAuthorOfPublication11c29f10-6e2b-40d8-9c74-2cc45be6d7a7
relation.isAuthorOfPublication.latestForDiscovery5f6e51ee-9113-469e-8b9e-f30f2d452521

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