Publication Details

Category Text Publication
Reference Category Journals
DOI 10.3390/w12061597
Licence creative commons licence
Title (Primary) A test device for microalgal antifouling using fluctuating pH values on conductive paints
Author Kamjunke, N.; Spohn, U.; Morig, C.; Wagner, G.; Neu, T.R.
Journal Water
Year 2020
Department FLOEK
Volume 12
Issue 6
Page From art. 1597
Language englisch
Keywords antifouling; flume; conductive paint; electrochemical treatment; pH; biofilm; confocal laser scanning microscopy
Abstract Due to the current dependence on biocidal antifouling coatings for biofouling control, there is a continuing international challenge to develop more environmentally acceptable antifouling systems. Fluctuating the pH values on paint surfaces is one of these approaches. We developed an antifouling test device to investigate algal biofilms on conductive paints by using a flume with electrochemically working test panels and subsequent confocal laser scanning microscopy (CLSM) of biofilms. By employing a pole reversal of direct current, fluctuating pH values on the paint surface were generated. As a consequence of the resulting pH stress, colonization of the paint surface by diatoms decreased substantially. The density of biofilm algae decreased with increasing pH fluctuations. However, breaks between electrochemical treatments should not exceed one hour. Overall, we established an experimental setup for testing the antifouling capabilities of electrodes based on conductive paints, which could be used for further development of these varnishes.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=23197
Kamjunke, N., Spohn, U., Morig, C., Wagner, G., Neu, T.R. (2020):
A test device for microalgal antifouling using fluctuating pH values on conductive paints
Water 12 (6), art. 1597