Alkaline Extraction
4,490 views · Published 3 February 2015 · 1:13 · Indexed 10 November 2026
Channel: Vector Solutions Industrial · 2015 · Education
Visit https://goo.gl/4FcGb5 to view the full video and purchase access to our other Pulping courses. Chlorine is an excellent chemical for pulp bleaching because of its low cost and lignin removal effectiveness. For these reasons, chlorine was traditionally used in the first bleaching stage to remove up to 90% of the lignin remaining in unbleached pulp. Chlorination is the treatment of pulp with chlorine to solubilize lignin and ultimately bleach the pulp. This course discusses the basics of chlorine bleaching chemistry, the purpose of extraction, and the equipment used in chlorination and extraction.
