Skip to main content

A new technique for measuring the ζ-potential of organic sludge floe formed by cationic polyelectrolyte addition: description and application

Buy Article:

$22.00 plus tax (Refund Policy)


A new technique for measuring the ζ-potential of organic sludge floe formed by cationic polyelectrolyte addition was devised to efucidate the flocculation mechanism. The ζ-potential was calculated from the generated electric potentials and the pressure drop formed by forcing the flow of an electrolyte solution over the surface of flat samples. The flat samples were made by compressive dewatering of flocculated sludge. The results obtained were considered to correspond to the potential of the Hoc surface. The ζ-potential of flocculated sludge samples changed in sign from negative to positive with an increase in the amount canonic polyelectrolyte. The cationic polyelectrolyte dosage whereby the ζ-potential becomes zero and the optimum dosage at which the de-watering of flocculated sludge attains a maximum coincided. Because the repulsive force between particles decreases at that dosage (that is, at the break point) owing to the neutralization of the electric charge of particle surfaces, particles approach one another and a floe with good dewatering characteristics is produced.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: cationic polyelectrolyte; flocculation; floe; solid-liquid separation; streaming potential; zeta-potential

Document Type: Research Article

Publication date: 1992-01-01

More about this publication?
  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Information for Advertisers
  • WEF Bookstore
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more