Liquid Bridge Agglomeration: A Fundamental Approach to Toner Deinking, 1994 Recycling Symposium Proceedings
Bret A. Snyder, John C. Berg
The authors investigate an alternative agglomeration technique for deinking toner-printed furnishes. This technique requires only the addition of an immiscible hydrocarbon oil dispersed in water at dosages of approximately 1% by weight on fiber. The addition is made during repulping. The process appears to be effective at all temperatures of interest (23 “C and 70 “C are tested) and requires no surfactants or additional chemicals. The result of the oil addition is the agglomeration of the toner particles into spheres of 1 mm to 1 cm in size. These spheres contain the added oil which acts as a binder, holding the toner particles together by liquid bridges. The process, however, is ineffective when the furnish contains highly sized fibers or starched paper, and future work seeks to address these crucial problems.
Liquid Bridge Agglomeration: A Fundamental Approach to Toner Deinking, 1994 Recycling Symposium Proc