• Home
  1. Home
  2. Salt concentration influence on the efficiency of two cationic polymeric flocculants
Scientific article
OA Policy
English

Salt concentration influence on the efficiency of two cationic polymeric flocculants

Contributors

Palomino, Daniel; Hunkeler, David; Stoll, Serge

Published in

Colloid and polymer science, vol. 290, no. 13, p. 1301-1308

Publication date

2012

Abstract

The influence of the increase of the solution ionic strength on the flocculation of charged latex particles in the presence of cationic polymers is reported. Empirical flocculation rate constants are experimentally determined using particle counting and for two cationic polymers, one linear and the second with two branches. Comparisons are made with a solution containing monovalent salt only at different ionic concentrations in the absence of polymers. In all cases, polymer-induced flocculation is significantly more efficient than charge screening effects using salt only. Analysis of zeta potential measurements indicates that the charge neutralization and surface charge variations dictate the stability of the latex suspensions. Moreover, the addition of a small amount of salt in the polymer–particle mixtures results in a dramatic decrease of the polymer efficiency which is more pronounced for the linear polymeric flocculant. By increasing further the ionic strength, the rates of polymer flocculation are found to increase again but remain smaller than in the absence of salt.

Keywords

  • Flocculant efficiency
  • Latexes
  • Salt effect
  • Kinetic rates
  • Flocculant dosage

UNIGE affiliation entities

UNIGE research groups

Funding

Citation (ISO format)

PALOMINO, Daniel, HUNKELER, David, STOLL, Serge. Salt concentration influence on the efficiency of two cationic polymeric flocculants. In: Colloid and polymer science, 2012, vol. 290, n° 13, p. 1301–1308. doi: 10.1007/s00396-012-2653-7

Main files (1)

Article (Accepted version)

Identifiers

Additional URL for this publication

http://www.springerlink.com/index/10.1007/s00396-012-2653-7

Journal ISSN

0303-402X
811views
906downloads

Technical informations

Creation

13/02/2013 16:39:00

First validation

13/02/2013 16:39:00

Update

20/01/2025 09:53:57

Status update

20/01/2025 09:53:57

Last indexation

20/01/2025 10:09:17
All rights reserved by Archive ouverte UNIGE and the University of Geneva
OpenAIRE Indexed & Validated