The biocidal efficacy of brominated hydantoins versus planktonic and biofilm bacteria was determined. Brominated hydantoins were effective at low concentrations versus planktonic bacteria and this activity was not affected by ammonia. Higher concentrations were required for efficacy versus biofilm bacteria. The efficacy of brominated hydantoins versus biofilm bacteria increased in the presence of ammonia. The biocidal and biofilm removal activity of bromo-chloro-dimethyl-hydantoin (BCDMH) was superior to that of bromo-chloro-ethylmethyl-hydantoin (BCEMH).

Subject
Bromine, BCDMH, Water, Cylinders, Halogens, Tubes, Bottles, Ammonia, Biofilms, Efficacy, Bacteria, Biocides, Risk reduction
Keywords:
bacteria, biocide, biofilm, biofouling, bromine, bromo-chloro-dimethyl-hydantoin, BCDMH, cooling water, halogen, microbiologically influenced corrosion
© 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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