Is FAS effective for colored wastepaper?

FAS can be particularly interesting when the recycled furnish contains colored materials or chromophores that respond to reducing treatment.

Potential applications include:

Mixed office waste

Colored recycled paper

Magazine furnish

Printed paper

Coated paper

Deinked recycled fiber

Specialty recycled pulp

The response varies significantly according to the type of dyes, pigments and printing inks present.

For this reason, actual customer furnish testing is essential.