Author

Kyle J. Smith

Date of Defense

Spring 4-12-1994

First Advisor

Raymond Janes, Paper and Printing Science and Engineering

Second Advisor

Raja Aravamuthan, Paper and Printing Science and Engineering

Third Advisor

Ellsworth Shriver, Paper and Printing Science and Engineering

Abstract

This study was performed to verify that the flotation deinking process is first order with respect to ink particle concentration and to examine the effects fiber and fiber consistency may have on the kinetics of ink removal flotation. The study was performed using the Hallimond tube laboratory flotation device. Image analysis of the floated ink particles was used to obtain quantitative results regarding flotation efficiency. The study determined that the flotation deinking process is first order with respect to ink particle concentration. A trend in effect of fiber consistency in the deinking rate was also found. It was determined that the rate constant, k, decreased with increasing fiber consistency. A decrease in k corresponded to a decreased flotation rate. The results follow the theory that increasing fiber consistency will decrease flotation efficiency due to fiber/ink interaction and ink entrapment in the fiber.

Access Setting

Honors Thesis-Campus Only

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