The effect of cathodic protection on Vibrio alginolyticus biofilms formed on stainless steel samples, was studied at different temperatures (6C, 12C and 20C). Bacterial settlement and reproduction was reduced by cathodic protection in the initial stages of biofilm formation. However, this effect was less relevant when the steady state of growth was reached. A reduction in the number of sessile cells was observed at low temperatures (6C, 12C).

The analysis of current density vs. contact time curves suggests that the formation of calcareous deposits is modified by organic adsorption and/or Vibrio alginolyticus adhesion. Higher current densities than those of the control were observed at the steady state when a -0.7 V (SCE) potential was applied, increasing cathodic protection costs.

Subject
Electrochemical cells, Cathodic protection, Corrosion currents, Seawater, Acidity, Biofilms, Current densities, Metals, Scale formation, Immersion, Stainless steel, Calcareous deposits, Adhesion
Keywords:
cathodic protection, biofilms, stainless steel, Vibrio alginolyticus, calcareous deposits
© 1993 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1993
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.