Suspension Flocculation by Polyelectrolytes: Experimental Verification of a Developed Mathematical Model

✍ Scribed by Ad.A. Berlin; I.M. Solomentseva; V.N. Kislenko

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 111 KB
• Volume: 191
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4930

✦ Synopsis

of high molecular weight flocculants (4). In contrast, the Using experimental data of AgI sol and poly( 2-methyl-5-vinylneutralizing mechanism of flocculation prevails when a pyridine ) chloride, we show that there is good agreement between strongly charged low-molecular-weight cationic polyelectrothe developed mathematical model of suspension flocculation by lyte, Percol 1697, is being used (4). polyelectrolytes and the experimental data. The rate constants Elucidation of the roles of both of these mechanisms, i.e., of bridging and nonbridging aggregation of particles and of floc bridging and nonbridging, and also of the role of molecular breakup, as well as their ratios, have been determined. It has been mass of polyelectrolyte in the flocculation process is the shown that the role of the nonbridging mechanism, as compared objective of this paper.

with that of the bridging one, diminishes when molecular mass of polyelectrolyte increases from 1.4 1 10 5 to 9.3 1 10 5 . ᭧ 1997