Quantitative measurement and visualization of biofilm O2 consumption rates in membrane filtration systems

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dc.contributor.author Prest, E.I. en_US
dc.contributor.author Staal, M. en_US
dc.contributor.author Kuhl, Michael en_US
dc.contributor.author Van Loosdrecht, M. en_US
dc.contributor.author Vrouwenvelder, J.S. en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-10-12T03:33:04Z
dc.date.available 2012-10-12T03:33:04Z
dc.date.issued 2012 en_US
dc.identifier 2011001874 en_US
dc.identifier.citation Prest E.I. et al. 2012, 'Quantitative measurement and visualization of biofilm O2 consumption rates in membrane filtration systems', Elsevier Inc, vol. 392-393, pp. 66-75. en_US
dc.identifier.issn 0376-7388 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/18029
dc.description.abstract There is a strong need for techniques enabling direct assessment of biological activity of biofouling in membrane filtration systems. Here we present a new quantitative and non-destructive method for mapping O2 dynamics in biofilms during biofouling studies in membrane fouling simulators (MFS). Transparent planar O2 optodes in combination with a luminescence lifetime imaging system were used to map the two-dimensional distribution of O2 concentrations and consumption rates inside the MFS. The O2 distribution was indicative for biofilm development. Biofilm activity was characterized by imaging of O2 consumption rates, where low and high activity areas could be clearly distinguished. The spatial development of O2 consumption rates, flow channels and stagnant areas could be determined. This can be used for studies on concentration polarization, i.e. salt accumulation at the membrane surface resulting in increased salt passage and reduced water flux. The new optode-based O2 imaging technique applied to MFS allows non-destructive and spatially resolved quantitative biological activity measurements (BAM) for on-site biofouling diagnosis and laboratory studies. The following set of complementary tools is now available to study development and control of biofouling in membrane systems: (i) MFS, (ii) sensitive pressure drop measurement, (iii) magnetic resonance imaging, (iv) numerical modelling, and (v) biological activity measurement based on O2 imaging methodology. en_US
dc.language en_US
dc.publisher Elsevier Inc en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.memsci.2011.12.003 en_US
dc.title Quantitative measurement and visualization of biofilm O2 consumption rates in membrane filtration systems en_US
dc.parent Journal Of Membrane Science en_US
dc.journal.volume 392-393 en_US
dc.journal.number en_US
dc.publocation Amsterdam, Netherlands en_US
dc.identifier.startpage 66 en_US
dc.identifier.endpage 75 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 030000 en_US
dc.personcode 0000070254 en_US
dc.personcode 0000061189 en_US
dc.personcode 107129 en_US
dc.personcode 0000061191 en_US
dc.personcode 0000070255 en_US
dc.percentage 25 en_US
dc.classification.name Chemical Science en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Optode; Non-destructive biofouling diagnosis; Biological activity measurement; Flow channels; Concentration polarization en_US
dc.staffid en_US

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