Streaming potential for identification of foulants adsorption on PVDF membrane surface

Jiadong Liu, Jingxue Xiong, Xin Ju, Bo Gao, Lei Wang, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

The streaming potential was used for foulant adsorption analysis on a PVDF membrane surface. Bovine serum albumin (BSA), sodium humate (SH) and sodium alginate (SA) solutions of different concentrations, pH and combinations were tested for adsorption. The pH and particle size of the different solutions were measured to identify their relationship to adsorption. During adsorption, the streaming potential increased constantly until adsorption equilibrium. Compared to 1 mg/L and 5 mg/L solutions, the higher concentrations of 25 mg/L and 125 mg/L solution could greatly enhance adsorbance under all conditions. For single-component solutions, the SH and SA showed much higher adsorbability than BSA, and the adsorption of SA played the dominate role in the mixed solution. However, no obvious relationship was observed between zeta potential/particle size and adsorbance. The streaming potential change indicated adsorption on the PVDF membrane surface was in the order of SA > SH > BSA. For 250 mL of foulant solution filtration under 0.1 MPa, it lasted 4.5 min, 5.3 min, 16.5 min and 12.3 min for BSA, SH, SA and the mixed solution, respectively, with 25 mg/l of concentration, which indicated that the results of streaming potential change accorded well with the membrane fouling condition.

Original languageEnglish
Pages (from-to)428-434
Number of pages7
JournalJournal of Membrane Science
Volume566
DOIs
Publication statusPublished - 15 Nov 2018
Externally publishedYes

Keywords

  • Adsorption equilibrium
  • Humic matter
  • Membrane fouling
  • Polysaccharide
  • Protein

ASJC Scopus subject areas

  • Biochemistry
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Fingerprint

Dive into the research topics of 'Streaming potential for identification of foulants adsorption on PVDF membrane surface'. Together they form a unique fingerprint.

Cite this