Effect of organic polyelectrolyte characteristics on floc strength
Gray, Stephen R and Ritchie, C. B (2006) Effect of organic polyelectrolyte characteristics on floc strength. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 273 (1-3). pp. 184-188. ISSN 0927-7757Full text for this resource is not available from the Research Repository.
Polyelectrolyte properties are known to have a large effect on floc strength. Very high molecular weight polyelectrolytes have been shown to produce stronger flocs than lower molecular weight polyelectrolytes. This paper examined the effect of polyelectrolyte charge density on sewage floc strength for very high molecular weight, cationic polyelectrolytes. Polyelectrolytes of low to medium charge density (0.18-1.42 mequiv./g) were shown to produce the strongest flocs. It was considered that very low charge densities resulted in poor polyelectrolyte adsorption on the floc and weak floes, while for high charge density polyelectrolytes electrostatic patch flocculation rather than bridging flocculation was thought to occur, and therefore weaker flocs resulted.
|Uncontrolled Keywords:||cationic polyacrylamides, charge density, floc strength, molecular weight, sewage|
|Subjects:||RFCD Classification > 290000 Engineering and Technology|
|Depositing User:||Ms Phung T Tran|
|Date Deposited:||04 Feb 2009 17:54|
|Last Modified:||04 Jul 2011 06:21|
|ePrint Statistics:||View download statistics for this item|
|Citations in Scopus:||13 - View on Scopus|
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