ENZYMATIC DEINKING OF NONIMPACT PRINTED WASTES

Cellulase deinking process of non-impact printed wastes was studied. The optimized conditions were: cellulase charge 0.3%, temperature 50℃. pulping consistency 10%, enzyme treatment time 30 min. agitating speed 400 rpm. Qquality of the deinking pulp was assessed by measuring the number, average diameter, percent coverage of residual ink usingPaperican ink scanner.