Zeta Potential Monitoring during Microfiltration of Humic Acid

Access this Article

Search this Article

Author(s)

Abstract

The properties of humic acid fouling in cellulose acetate microfiltration membranes and the response of the zeta potential, ζ<sub>obs</sub>, of the membrane to the fouling were studied with two dead-end filtration modules connected in series. ζ<sub>obs</sub> was monitored during the filtration by streaming potential measurement by pulse pressure mode. The fouling was caused by particulate humic acid at membrane surface and dissolved humic acid did not cause fouling. The fouling observed in the membrane having pore size of 0.22 µm was the cake filtration and those in the membranes having pore size of 0.45 and 0.8 µm were the pore blocking filtration followed by the cake filtration. The ζ<sub>obs</sub> changed during the filtration responding to the increase in the filtration resistance. The responses of ζ<sub>obs</sub> to the fouling can be elucidated in terms of the location of pressure drop and the local zeta potential.

Journal

  • JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 45(8), 583-589, 2012

    The Society of Chemical Engineers, Japan

Codes

  • NII Article ID (NAID)
    130001858748
  • NII NACSIS-CAT ID (NCID)
    AA00709658
  • Text Lang
    ENG
  • ISSN
    0021-9592
  • NDL Article ID
    024166767
  • NDL Call No.
    Z53-R395
  • Data Source
    NDL  J-STAGE 
Page Top