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Table 4 Generation of solid waste from kraft mill (Gavrilescu 2004; Bajpai 2015b; Quina and Pinheiro 2020)

From: Pulp and paper mill wastes: utilizations and prospects for high value-added biomaterials

Type of waste

Yield (kg/t of dry pulp)

Sawdust

10–30

Bark

100–300

Pins and fine

50–100

Woody fragments/wood yard/

0–20

Knot

25–70

Recovery boiler salts

5–10

Dregs

10–30

Grits

15–40