Adsorption and entrapment of calcium soaps using packed beds of pulp fibers

Claudia Fernandez, Gil Garnier

Research output: Contribution to conferencePaper


Recycled paper often has different properties than that paper entirely made of virgin pulp. The strength, the coefficient of friction and the water absorbency can all decrease by incorporating recycled fiber into papers. This leads to problems in achieving quality printing. A hypothetical mechanism for this loss of papermaking and printing potential is the adsorption and entrapment of molecules of low surface energy on the wood fibers during recycling. Such molecules would size the paper and could be responsible for chemical carryover in other unit operations when subjected to a shock in pH temperature. This paper develops a sensitive technique to measure the adsorption of contaminants in general, and fatty acids soap in particular, on the pulp during recycling.

Original languageEnglish
Number of pages5
Publication statusPublished - 1 Dec 1995
Externally publishedYes
EventProceedings of the 3rd Research Forum on Recycling - Vancouver, BC, Can
Duration: 20 Nov 199522 Nov 1995


ConferenceProceedings of the 3rd Research Forum on Recycling
CityVancouver, BC, Can

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