Table 3 Potential pulp and paper mill waste types
From: Pulp and paper mill wastes: utilizations and prospects for high value-added biomaterials
Type of waste | Source of waste |
|---|---|
Black liquor | Chemical pulp manufacture (kraft process) |
Wood/bark residues [Saw dust and others] | All types of pulping mainly chemical and mechanical methods of pulp manufacturing |
Screening and other rejects | Stock preparation for paper machine, kraft pulping, and recycling route for paper manufacturing |
Semi-mechanical sludge | Effluent and water treatment |
Biological sludge | Effluent treatment utilizing biological technique |
Sludge from de-inking treatment | Recycled paper de-inking treatment |