The flocculation of cane sugar muds with acrylamide-sodium acrylate copolymers

The flocculation of cane sugar muds with commercial acrylamide-sodium acrylate copolymers has been investigated through the measurement of settling rates and residual turbidities. The flocculation efficiencies of the copolymers were observed to depend on their composition, microstructure, and molecu...

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Bibliographic Details
Published in:Journal of applied polymer science 1991-02, Vol.42 (3), p.837-844
Main Authors: Crees, O.L. (Sugar Research Institute, Mackay, Queensland, Australia), Senogles, E, Whayman, E
Format: Article
Language:English
Subjects:
ACRILAMIDA
ACRYLAMIDE
ADSORCION
ADSORPTION
Application fields
Applied sciences
CANA DE AZUCAR
CANNE A SUCRE
Exact sciences and technology
FLOCULACION
FLOCULATION
POLIMEROS
Polymer industry, paints, wood
POLYMERE
Technology of polymers
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Summary:The flocculation of cane sugar muds with commercial acrylamide-sodium acrylate copolymers has been investigated through the measurement of settling rates and residual turbidities. The flocculation efficiencies of the copolymers were observed to depend on their composition, microstructure, and molecular weight, and the zeta potential of the mud particles. Adsorption of polymer at the surface of the particles was shown to occur through interaction with the acrylate groups. The experimental results are consistent with a bridging mechanism for the flocculation process, in which an observed optimum copolymer composition is associated with polymer adsorption which is sufficiently strong to resist mild shear forces yet allows the extension of polymer "loops" and "tails" into solution
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1991.070420329