Model of Ink Particle Separation in Column Flotation Deinking
Source: AIChE

- Type: Conference Presentation
- Conference Type: AIChE Annual Meeting
- Presentation Date: November 10, 2015
- Duration: 30 minutes
- Skill Level: Intermediate
- PDHs: 0.50
Column flotation is a novel technique of separation of hydrophobic particles from a suspension. An experimental investigation of column flotation as applied to de-inking of a 50-50 mix of photocopier and laser-print waste paper is described. Experiments were conducted in both the batch and the continuous mode of operation. Hand-sheets were made from the de-inked pulp and the brightness and ink particle size distributions were measured. The kinetic constants for de-inking were determined for the continuous modes. A comparison between the laboratory scale column flotation and other flotation deinking methods is evaluated and modeling of the process described.
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