Journal
BIOFOULING
Volume 38, Issue 2, Pages 119-130Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/08927014.2022.2027923
Keywords
Marine biofouling; alternating potentials; adhesion; rotating disk; field testing
Funding
- Mercator foundation [Pr-2015-0018]
- ONR [N00014-20-12244, N00014-20-12243]
- BMBF [02WIL1487]
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The application of electric fields, specifically alternating potentials, to conductive coatings has been found to significantly reduce the attachment of marine fouling organisms. In this study, a rotating disk setup was developed to study the effects of alternating potentials on fouling organisms in a multispecies ocean environment. The results showed that alternating potentials were capable of greatly reducing fouling organism attachment.
The application of electric fields to conductive coatings is an environmentally friendly way to reduce biofilm formation. In particular alternating potentials (APs) have received increasing attention in recent studies. Here, an electrochemical rotating disk setup for dynamic field exposure experiments was developed to study how APs alter the attachment of fouling organisms in a multispecies ocean environment. A specific focus of the device design was proper integration of the potentiostat in the strongly corroding saltwater environment. The effect of APs on the accumulation of fouling organisms in short term field exposures was studied. Potentials on conductive gold surfaces were periodically switched between -0.3 V and 0.3 V or between -0.8 V and 0.6 V at a frequency of 0.5 Hz. APs were capable of significantly reducing the attachment of marine fouling organisms compared with the conductive samples immersed at open circuit potentials.
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