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Acoustic, electrochemical and microscopic characterization of interaction of Arthrospira platensis biofilm and heavy metal ions

hal.structure.identifierInstitut des Sciences Analytiques [ISA]
hal.structure.identifierLaboratoire des Interfaces et Matériaux Avancés [Monastir] [LIMA]
dc.contributor.authorTEKAYA, Nadèje
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorGAMMOUDI, Ibtissèm
hal.structure.identifierLaboratoire des Interfaces et Matériaux Avancés [Monastir] [LIMA]
hal.structure.identifierInstitut des Sciences Analytiques [ISA]
dc.contributor.authorBRAIEK, Mohamed
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorTARBAGUE, Hakim
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
hal.structure.identifierLaboratoire des Interfaces et Matériaux Avancés [Monastir] [LIMA]
dc.contributor.authorMOROTE, Fabien
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorRAIMBAULT, Vincent
hal.structure.identifierLaboratoire des Interfaces et Matériaux Avancés [Monastir] [LIMA]
dc.contributor.authorSAKLY, Nawfel
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorREBIÈRE, Dominique
hal.structure.identifierInstitut National des Sciences et Technologies de la Mer [Salammbô] [INSTM]
dc.contributor.authorBEN OUADA, Hatem
hal.structure.identifierInstitut des Sciences Analytiques [ISA]
dc.contributor.authorLAGARDE, Florence
hal.structure.identifierLaboratoire des Interfaces et Matériaux Avancés [Monastir] [LIMA]
dc.contributor.authorBEN OUADA, Hafedh
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorCOHEN-BOUHACINA, Touria
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorDÉJOUS, Corinne
hal.structure.identifierInstitut des Sciences Analytiques [ISA]
dc.contributor.authorJAFFREZIC-RENAULT, Nicole
dc.date.created2013-04-22
dc.date.issued2013-09
dc.identifier.issn2213-3437
dc.description.abstractEnThis study examines a biofilm of Arthrospira platensis and its interactions with cadmium and mercury, using electrochemical admittance spectroscopy technique combined with highly sensitive Love wave platform for the real-time detection in liquid medium. Spirulina cells were immobilized via multilayers of polyelectrolyte (PEM) on Si/SiO2 surface of both transducers and characterized using atomic force microscopy (AFM). Scanning electron microscopy (SEM) cell images revealed a first defense mechanism against cadmium at 10−12 M and it immediately takes place after 4 s from injection. The cyanobacteria biofilm becomes more conductive, due to an increase of polyphosphate bodies. An increase of density induces a decrease of frequency. Response time τ90% of the biofilm toward Cd2+ was between 6 and 8 min, while it did not exceed a few seconds toward Hg2+ at 10−12 M. However, the initial rapid stage of mercury adsorption took 40 s to reach the saturated stage. Once external sorption reached the saturated stage, internal mercury uptake began; cations were transported across the cell membrane into the cytoplasm and a beta-HgS precipitation took place, inducing conductivity biofilm decrease, and generating an increase of density, and thus a frequency decrease. SEM images revealed the beginning cell damage at 10−06 M of cadmium and mercury.
dc.description.sponsorshipImmunocapteur à ondes de Love ultra-sensible pour la détection rapide de micro-organismes dans l'eau, visant la réalisation d'un dispositif d'alerte
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/
dc.subject.enSpirulina
dc.subject.enHeavy metals
dc.subject.enAdmittance
dc.subject.enLove wave
dc.subject.enSEM
dc.subject.enAFM
dc.title.enAcoustic, electrochemical and microscopic characterization of interaction of Arthrospira platensis biofilm and heavy metal ions
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jece.2013.07.006
dc.subject.halChimie/Chimie analytique
dc.subject.halChimie/Génie chimique
dc.subject.halPhysique [physics]/Physique [physics]/Biophysique [physics.bio-ph]
bordeaux.journalJournal of Environmental Chemical Engineering
bordeaux.page609-619
bordeaux.volume1
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-00878629
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00878629v1
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