Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 411-421 |
| Journal | Sensors and Actuators B: Chemical |
| Volume | 230 |
| DOIs | |
| Publication status | Published - 17 Feb 2016 |
| MoE publication type | A1 Journal article-refereed |
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Real-time Raman based approach for identification of biofouling. / Kögler, Martin.
In: Sensors and Actuators B: Chemical, Vol. 230, 17.02.2016, p. 411-421.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Real-time Raman based approach for identification of biofouling
AU - Kögler, Martin
PY - 2016/2/17
Y1 - 2016/2/17
N2 - tThis study describes a proof-of-concept for a compact real-time surface-enhanced Raman spectroscopy(SERS)-online sensing approach for detection of biofouling in drinking water membrane filtration. In thisstudy we created a custom-designed flow-cell that mimics a cross-flow membrane filtration system. Thisenables one to measure changes in surface-foulants, such as Brevundimonas dimiuta (BD) bacteria and ade-nine, under conditions that are similar to conventional membrane filtration systems. For measurementswe used a common portable Raman-spectrometer with a laboratory Raman-probe in combination with aspecially developed gold nanoparticle (Au NP) SERS-sensing area on filter-membranes. This allowed real-time detection of low concentrations of surface-foulants immediately after inoculation into an ultra-purewater reservoir under pressure-driven filtration conditions. We compared these online results with staticmeasurements from an offline, sample-taking approach, using a confocal Raman-laboratory-microscope.The developed Au NP SERS-sensing-area on the membranes proved to be stable over a long period ofsurface fouling investigations and to suppress the strong interfering Raman-signal originating from thecomposition layer of most filtration membranes.
AB - tThis study describes a proof-of-concept for a compact real-time surface-enhanced Raman spectroscopy(SERS)-online sensing approach for detection of biofouling in drinking water membrane filtration. In thisstudy we created a custom-designed flow-cell that mimics a cross-flow membrane filtration system. Thisenables one to measure changes in surface-foulants, such as Brevundimonas dimiuta (BD) bacteria and ade-nine, under conditions that are similar to conventional membrane filtration systems. For measurementswe used a common portable Raman-spectrometer with a laboratory Raman-probe in combination with aspecially developed gold nanoparticle (Au NP) SERS-sensing area on filter-membranes. This allowed real-time detection of low concentrations of surface-foulants immediately after inoculation into an ultra-purewater reservoir under pressure-driven filtration conditions. We compared these online results with staticmeasurements from an offline, sample-taking approach, using a confocal Raman-laboratory-microscope.The developed Au NP SERS-sensing-area on the membranes proved to be stable over a long period ofsurface fouling investigations and to suppress the strong interfering Raman-signal originating from thecomposition layer of most filtration membranes.
U2 - 10.1016/j.snb.2016.02.079
DO - 10.1016/j.snb.2016.02.079
M3 - Article
VL - 230
SP - 411
EP - 421
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
SN - 0925-4005
ER -