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Title: Enzymatic versus chemical deinking of non-impact ink printed paper
Author: Pala, Helena
Mota, Manuel
Gama, Francisco Miguel
Keywords: Paper pulps
Non-impact inks
Image analysis
Issue Date: 2004
Publisher: Elsevier
Citation: PALA, Helena; MOTA, Manuel; GAMA, Francisco Miguel - Enzymatic versus chemical deinking of non-impact ink printed paper. Journal of Biotechnology. Vol. 108, n.º 1 (2004), p. 79-89.
Abstract: Enzymatic versus chemical deinking is examined for MOW and photocopy prints. Several enzymatic preparations and two fibre/ink particle separation methods are tested. Deinking was monitored by image analysis and standard pulp and paper characterisation procedures. The effectiveness of the fibre/ink particle separation method depends on the ink particle’s size: for smaller particles a washing step is recommended whereas for larger particles, the use of flotation is necessary. The enzymatic treatment is a competitive alternative for MOWand photocopy paper deinking. However, the process requires the selection of an adequate enzymatic preparation for each paper grade.
ISSN: 0168-1656
Appears in Collections:Artigos em revistas internacionais

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