Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/53174
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Title: Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR
Authors: Liu, Ying | Berná Galiano, Antonio | Climent, Victor | Feliu, Juan M.
Research Group/s: Electroquímica de Superficies
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica
Keywords: Electrochemically active biofilm | Biofilm formation | Cell biomass | EQCM | ATR/FTIR | Microbial fuel cell
Knowledge Area: Química Física
Issue Date: 31-Mar-2015
Publisher: Elsevier
Citation: Sensors and Actuators B: Chemical. 2015, 209: 781-789. doi:10.1016/j.snb.2014.12.047
Abstract: In the current study, the relationship between current and biomass and bio-adhesion mechanism of electrogenic biofilm on electrode were investigated using EQCM and ATR-SEIRAS linking electrochemistry. The results indicated that cellular biomass of biofilm on QCM-crystal surface showed maximum value of 6.0 μg/cm2 in initial batch and 11.5 μg/cm2 in the second batch on mature biofilm, producing a similar maximum current density of 110 μA/μg. Especially, the optimum cell biomass linking high electricity production ratio (110 μA/μg) occurred before maximum biomass coming, implying that over-growth mature biofilm is not an optimum state for enhancing power output of MFCs. On the other hand, the spectra using ATR-SEIRAS technique linking electrochemistry obviously exhibited water structure adsorption change at early biofilm formation and meanwhile the water adsorption accompanied the adsorbed bacteria and the bound cells population on the electrode increased with time. Meanwhile, the direct contact of bacteria and electrode via outer-membrane protein can be confirmed via a series spectra shift at amide I and amide II modes and water movement from negative bands displacing by adsorbed bacteria. Our study provided supplementary information about the interaction between the microbes and electrode beyond traditional electrochemistry.
Sponsor: This work was supported by project from the National Natural Science Foundation of China (No. 21375107) and University of Alicante through Project CTQ2013-44083-P.
URI: http://hdl.handle.net/10045/53174
ISSN: 0925-4005 (Print) | 1873-3077 (Online)
DOI: 10.1016/j.snb.2014.12.047
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 Elsevier B.V.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.snb.2014.12.047
Appears in Collections:INV - EQSUP - Artículos de Revistas

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