Laboratory scale dissolution potentials measured for twelve commercially available polyelectrolytes are compared to that of an EDTA standard. Series of Homo-, Co- and higher polymers of varying molecular weights comprise the polyelectrolytes evaluated. The relative dissolution potentials of these polyelectrolytes are given for several scalants, including CaCO3, Ca10 (OH)2(PO4)6 and MgSiO3. The molecular weight of polyacrylic acid based polyelectrolytes is shown to have a pronounced effect on the dissolution rate of CaCO3. Four follow up pilot tests show selective polyelectrolytes to provide marginal to good potential for on-line scale removal.

Subject
Acids, Water, Materials, Copolymers, Molecular weight, Dissolution, Polymers, Terpolymers, Scale, Magnesium, Cooling towers, Hardness, Acrylics
© 1989 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).
1989
Association for Materials Protection and Performance (AMPP)
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