Laboratory paper pulp deinking: an evaluation based on image analysis, ISO brightness and ERIC

Pala, Helena; Mota, Manuel; Gama, Francisco Miguel

http://hdl.handle.net/10400.8/73

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Authors

Pala, Helena

Mota, Manuel

Gama, Francisco Miguel

Abstract(s)

Image analysis, ERIC and ISO brightness measurements were used to evaluate the effectiveness of laboratory deinking assays. The accurate measurement of the residual ink amount is difficult and the results depend on the methodology used. The three techniques correlate only when the same paper pulp is analysed and when the ink particle size distribution profile is similar. As the relative amount of each particle size depends on the deinking protocol used, the ink removal effectiveness is measured differently according to each test method. Image analysis was shown to be the most reliable method.

Keywords

Paper pulps Laboratory deinking Image analysis ERIC Brightness

URI

http://hdl.handle.net/10400.8/73

Citation

PALA, Helena; MOTA, Manuel; GAMA, Francisco Miguel - Laboratory paper pulp deinking: an evaluation based on image analysis, ISO brightness and ERIC. APPITA Journal. Vol. 60, n.º 2 (2007), p. 129-143.