Novel treatment strategies involving intermittent (continuous) dosing of chloromethyl-methylisothiazolone (CMIT/MIT) biocide with slug doses of glutaraldehyde was shown to control microbially-influenced corrosion and biofouling by sulfate-reducing bacteria (SRB) in model systems. Reduced biocorrosion was shown using linear polarization resistance and corrosion coupons. Biofouling on metal surfaces was monitored by biochemical analysis of biofilms. Efficacy was related to the biocide treatment level and dosing frequency. More frequent dosing of CMIT/MIT at low concentrations resulted in improved control.

Subject
Biofouling, Hydrogen sulfide, Water, Corrosion rate, Steel coupons, Slug flow, Solids, Isothiazolone, Biofilms, Corrosion modeling, Glutaraldehyde, Biocides, Microbiologically influenced corrosion
Keywords:
isothiazolone, biocide, corrosion, glutaraldehyde, SRB, biofouling
© 2001 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).
2001
Association for Materials Protection and Performance (AMPP)
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