Collision efficiencies of algae and kaolin in depth filter: The effect of surface properties of particles

Ch-Hpin Huang*, Jill Ruhsing Pan, Shuhui Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Column filtration experiments with 2 mm-φ glass beads were conducted to investigate the behavior of colloids during filtration. Algae and kaolin were used as model particles, while the chemical system was altered by changing the electrolyte concentration and pH. The collision efficiencies from the interaction between colloids and the filter medium were calculated with a semi-empirical approach of the single sphere model and clean-bed filtration theory. The experimental results indicate that ionic strength enhance the removal efficiencies for both algae and kaolin particles significantly. The removal efficiency of the filter for algae decreased with the increase in pH for up to pH 6. No significance change was observed beyond pH 6. Removal efficiencies for kaolin decreased with an increase in pH. It is concluded that collision efficiencies are sensitive to ion strength and pH.

Original languageEnglish
Pages (from-to)1278-1286
Number of pages9
JournalWater Research
Volume33
Issue number5
DOIs
StatePublished - 1 Apr 1999

Keywords

  • Algae
  • Collision efficiency
  • Filtration
  • Kaolin
  • Zeta potential

Fingerprint Dive into the research topics of 'Collision efficiencies of algae and kaolin in depth filter: The effect of surface properties of particles'. Together they form a unique fingerprint.

Cite this