Date of Award
Bachelor of Science
Paper Science and Engineering
The literature review for this thesis was done on the expectation of acquiring an ozone generator for experimental work. This expectation was never realized. Consequently, a low consistency oxygen treatment under mild alkaline conditions and room temperature was done instead. The two major considerations were to determine the effect of this treatment on strength properties and development, and on hydrosulfite bleachability. It was found that the brightness of the pulp was reduced on alkaline oxygen treatment, but pretreatment increased the bursting strength development caused by hydrosulfite bleaching, at the same freeness level. A substantial reduction in freeness level was experienced on alkaline oxygen treatment, and response to refining was reduced on chemical treatment, both oxygen and hydrosulfite.
DeAmico, Robert L., "The Effect of Oxygen Treatment of Thermomechanical Pulp on Strength and Hydrosulfite Bleachability" (1981). Paper Engineering Senior Theses. 129.