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Enzymatic versus chemical deinking of non-impact ink printed paper
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Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Paper pulps Non-impact inks Deinking Enzymes Image analysis
Contexto Educativo
Citação
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.