Date of Award
Bachelor of Science
Paper Science and Engineering
The purpose of this investigation was two-fold--first to determine what effects recycling the cooking liquor in varying percentages had upon the final pulp quality, and second to find out what effect eliminating the washing stage had upon the final pulp. The results are not as definite as would have been desired due to variation in the data. Generally, the results showed recycling the cooking liquor left more fines in the pulp resulting in higher tensile, burst, and fold strength. Eliminating the washing stage left more ink particles, pigments, and fines in the pulp which resulted in higher yields, better opacity, lower brightness, and increased physical strengths.
Ollila, Thomas H., "Effect of Recycling Cooking Liquor and Eliminating the Washing Stage During Chemical Deinking" (1976). Paper Engineering Senior Theses. 400.