External resistances applied to MFC affect core microbiome and swine manure treatment efficiencies
dc.contributor.author
dc.date.accessioned
2016-10-27T07:40:17Z
dc.date.available
2016-10-27T07:40:17Z
dc.date.issued
2016-10-04
dc.identifier.uri
dc.description.abstract
Microbial fuel cells (MFCs) can be designed to combine water treatment with concomitant
electricity production. Animal manure treatment has been poorly explored using MFCs, and
its implementation at full-scale primarily relies on the bacterial distribution and activity within
the treatment cell. This study reports the bacterial community changes at four positions
within the anode of two almost identically operated MFCs fed swine manure. Changes in
the microbiome structure are described according to the MFC fluid dynamics and the application
of a maximum power point tracking system (MPPT) compared to a fixed resistance
system (Ref-MFC). Both external resistance and cell hydrodynamics are thought to heavily
influence MFC performance. The microbiome was characterised both quantitatively
(qPCR) and qualitatively (454-pyrosequencing) by targeting bacterial 16S rRNA genes.
The diversity of the microbial community in the MFC biofilm was reduced and differed from
the influent swine manure. The adopted electric condition (MPPT vs fixed resistance)
was more relevant than the fluid dynamics in shaping the MFC microbiome. MPPT control
positively affected bacterial abundance and promoted the selection of putatively exoelectrogenic
bacteria in the MFC core microbiome (Sedimentibacter sp. and gammaproteobacteria).
These differences in the microbiome may be responsible for the two-fold increase in
power production achieved by the MPPT-MFC compared to the Ref-MFC
dc.description.sponsorship
This research was financially supported by the Spanish Government (CTQ2014-53718-R) and the Catalan Government (2014 FI-B 00093)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Public Library of Science (PLoS)
dc.relation
info:eu-repo/grantAgreement/MINECO//CTQ2014-53718-R/ES/TECNOLOGIAS INNOVADORAS PARA LA MEJORA DE BIOGAS: DESDE LA INVESTIGACION BASICA A LA EVALUACION DE TECNOLOGIAS/
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1371/journal.pone.0164044
dc.relation.ispartof
PLoS One, 2016, vol. 11, núm. 10, e0164044
dc.relation.ispartofseries
Articles publicats (D-EQATA)
dc.rights
Attribution 3.0 Spain
dc.rights.uri
dc.subject
dc.title
External resistances applied to MFC affect core microbiome and swine manure treatment efficiencies
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
Cap
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
025756
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1932-6203