Correlation between modified fouling index (MFI) and crossflow sampler-modified fouling index (CFS-MFI) under constant flux filtration

This study presents the development of a simple correlation between modified fouling index (MFI) and crossflow sampler-modified fouling index (CFS-MFI) to assess fouling potential of feed under constant flux mode. The study was carried out using a bench-scale experimental set-up with variables including crossflow effect, feed concentration, particle types and sizes, and the intrinsic resistance of membrane. From the forty-eight experimental data, upper and lower bounds of the correlation between MFIconst.flux and CFS-MFIconst.flux were successfully established. The permissible range of coefficient (1.007 ≤ m ≤ 1.561) for the correlation was further verified by the dataset reported in previous study.