Scientists from Perm Polytechnic University have improved the process of recycling waste paper and wood residues, making it simpler and more efficient. This process involves dissolving fibers, sorting and removing impurities. The scientists used an aerodynamic disperser that simultaneously crushes material and removes impurities, including plastic.
The dispersant allows the material to dissolve into fibers without water, which reduces the loss of small fibers. This machine has three functions: grinding, separating and removing impurities. Light impurities are removed using an air stream, but the fibrous part of the waste paper remains.
This improvement increased the whiteness of the recycled paper from 45.5% to 50% as all the printing ink was broken down and removed. These changes make the recycling process more cost-effective and environmentally friendly.
Source: Ferra
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