Two different industrial “green” scale inhibitor families, namely synthetic polyamino-acides and carboxylated plant polysaccharides have been compared to current inhibitors (phosphonates or polyacrylates) in their ability to reduce carbonate and sulfate scale formation. Comparative jar and tube blocking tests and also adsorption / desorption determinations in static or dynamic conditions enable to outline some of the advantages exhibited by these “green” inhibitors, i.e. correct MIC (Minimum Inhibitor Concentration) values, high calcium tolerance and of course biodegradability.

A non damaging “totally green” conditioning of these inhibitors as water in oil invert emulsion was also prepared, characterized and its stability versus temperature tested.

Subject
Limestone, Water, Emulsions, Phosphonates, Adsorption, Scale inhibitors, Surfactants, Polyacrylates, Seawater, Corrosion inhibitors, Scaling, Microbiologically influenced corrosion, Oil
Keywords:
Green Scale Inhibitors, Jar Tests, Tube Blocking Tests, Static and Dynamic Adsorption Tests, Emulsion Conditioning
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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