Electrochemical quartz crystal microbalance to monitor biofilm growth and properties during bioelectrochemical system inoculation and load conditions

S. Brown-Malker, S. Read, A. Rowlands, J. Cooper-White, Philipp J. Keller

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

5 Citations (Scopus)


BioElectrochemical Systems are an emerging technology of interest. Central to the successful operation of these systems is the development of a biofilm on an electrode surface that facilitates the interaction of microorganisms capable of extra-cellular electron transfer. Porous graphite is typically chosen as the electrode material. However, other materials could contribute to a significant improvement in reactor performance. In order to evaluate these novel materials, a platform methodology is required. In this study, E-QCM-D was evaluated using a gold electrode, a mixed biofilm population and a challenging real influent (fermented solubilised sludge). The results gave real-time feedback on both the acoustic and electrochemical impedance of the working electrode, hence providing information about biofilm thickness, viscoelasticity, kinetics and mass transport. The use of E-QCM-D is novel for this field and has the potential to provide a wealth of new data to help optimise the performance of biofilms in these systems.

Original languageEnglish
Title of host publicationBiological Fuel Cells 4
Number of pages12
Publication statusPublished - 2010
Externally publishedYes
EventBiological Fuel Cells 4 - 217th ECS Meeting - Vancouver, Canada
Duration: 25 Apr 201030 Apr 2010


ConferenceBiological Fuel Cells 4 - 217th ECS Meeting

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