I am filtering a CNF slurry of 0.1 wt% concentration through a mixed cellulose ester membrane under vacuum.

The CNF is extracted from hemp fiber through a series of alkaline and acid treatments with NaOH and HCl respectively. The bleaching is done by hydrogen peroxide and sodium silicate. The bleached sample is refined into nanoscale via mass collider.

This slurry is sonicated and filtered through a membrane in a vacuum filtration setup.

I have attached a few images of bleached and unbleached sample that I filtered but could not remove from the membrane.