Deposition of toxic metal particles on rough nanofiltration membranes

Oluranti Agboola, Jannie Maree, Richard Mbaya, Caliphs Musa Zvinowanda, Gomotsegang Fred Molelekwa, Nora Jullok, Bart van der Bruggen, Alexander Volodine, Chris Van Haesendonck

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Two nanofiltration (NF90 and Nano-Pro-3012) membranes were investigated for their capacity to remove metal ions. This study presents the effect of membrane roughness on the removal of toxic metal ions during dead end membrane filtration. Atomic force microscopy, scanning electron microscopy, WSXM software and ImageJ were used to characterize the roughness of the membranes. Gradual decrease in filtration permeate flux was observed as foulants accumulated at the interface of the membranes; filtration permeate flux varied from 20 L/m2/h to 14 L/m2/h and 11 L/m2/h to 6 L/m2/h for NF90 and Nano-Pro-3012, respectively. NF90 membrane was more prone to fouling than the Nano-Pro-3012 membrane: the percentage flux reduction was higher for NF90 (3.6%) than Nano-Pro-3012 (0.98%). The bearing ratio of the fouled NF90 exhibited a high peak of 7.09 nm than the fouled Nano-Pro-3012 with the peak of 6.8 nm.

Original languageEnglish
Pages (from-to)1413-1424
Number of pages12
JournalKorean Journal of Chemical Engineering
Issue number8
Publication statusPublished - Aug 2014
Externally publishedYes


  • AFM
  • Bearing Analysis
  • Flux Reduction
  • Particle Deposition
  • Roughness
  • SEM

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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