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Influence of Water Quality on the Efficiency of Retention Aids Systems for the Paper Industry

Ordóñez Sanz, Ruth and Hermosilla Redondo, Daphne and de la Fuente González, Elena and Blanco Suárez, Ángeles (2009) Influence of Water Quality on the Efficiency of Retention Aids Systems for the Paper Industry. Industrial & Engineering Chemistry Research, 48 (23). pp. 10247-10252.


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It has been reported that about 10-15% of the fresh water intake in a paper mill is used for feeding and
diluting retention aids, so significant savings could be achieved by replacing fresh water with process water.
Water from different sources and qualitiessfresh water, the outflow from an internal ultrafiltration placed in
the machine circuit of a paper mill, and water from a membrane bioreactor used to treat the final effluent of
this paper millswere used to prepare a dual retention system consisting of a cationic polyacrylamide and
bentonite. While the behavior of bentonite was not significantly affected by the quality of the water used in
its preparation, the efficiency of the cationic polyacrylamide was reduced to about 12% when it was prepared
with water with high anionic trash content and conductivity as a result of a partial neutralization of the charged
groups. The effect of nonionic chemical oxygen demand on the efficiency of the polymer was negligible.

Item Type:Article
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“This document is the Accepted Manuscript version of a Published Work that appeared in final form in Industrial & Engineering Chemistry Research, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see"

Uncontrolled Keywords:Paper industry, Retention aids, Water quality, Fresh water replacement, Bentonite, Polyacrylamide
Subjects:Sciences > Chemistry > Chemical engineering
Sciences > Chemistry > Water
Sciences > Chemistry > Environmental conditions
Sciences > Chemistry > Paper industry
ID Code:11886
Deposited On:01 Mar 2011 12:22
Last Modified:06 Feb 2014 09:12

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