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Polymeric Branched Flocculant Effect on the Flocculation Process of Pulp Suspensions in the Papermaking Industry

Blanco Suárez, Ángeles and Fuente González, Elena de la and Monte Lara, María Concepción and Cortés, Noelia and Negro Álvarez, Carlos Manuel (2009) Polymeric Branched Flocculant Effect on the Flocculation Process of Pulp Suspensions in the Papermaking Industry. Industrial & Engineering Chemistry Research, 48 (10). pp. 4826-4836. ISSN 1520-5045

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ie8011837

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Abstract

This paper presents the effect of the structure of cationic polyacrylamides (CPAMs) on flocculation of pulp
suspensions and floc properties. A focused beam reflectance measurement (FBRM) probe was used to monitor
flocculation, deflocculation, and reflocculation processes in real time. To carry out the study, 1% elemental
chlorine free (ECF) eucalyptus kraft pulp containing 20% ground calcium carbonate (GCC) was used. Results
show that the effect of the CPAM structure depends on charge density and polymer dose. Floc size does not
always decrease with branching degree, whereas floc stability and reflocculation ability increased when highly
charged and branched CPAM was used. These findings indicate that the use of highly branched CPAMs with
very high molecular weight is very promising as a retention aid method to improve the papermaking process.

Item Type:Article
Additional Information:“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 http://pubs.acs.org/doi/abs/10.1021/ie8011837"
Uncontrolled Keywords:Polyacrylamides, Polymeric branched, Flocculation, FBRM, Paper industry
Subjects:Sciences > Chemistry > Chemical engineering
Sciences > Chemistry > Water
Sciences > Chemistry > Paper industry
ID Code:11905
Deposited On:01 Mar 2011 12:33
Last Modified:06 Feb 2014 09:13

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