WANG Feng, LONG Zhu, WU Meiyan, et al. Deinking of mixed office waste paper by cutinase/surfactant system[J]. CIESC Journal, 2017, (12): 4750-4755.DOI: 10.11949/j.issn.0438-1157.20170775.
and thus it can hydrolyze the binder in the ink and have the potential to replace lipase in the field of waste paper deinking. Cutinase and self-made surfactant was synergically used in deinking of office waste paper. The deinking effect and optimum process were discussed and compared with the conventional commercial lipase. The results showed that the optimal effect of cutinase could be achieved under the conditions of enzyme dosage of 10 U·g-1
enzyme treatment time of 30 min
enzyme treatment temperature of 50℃ and surfactant dosage of 0.2%. Compared with lipase/surfactant and surfactant deinking
the brightness and ink removal rate of paper after cutinase deinking were higher and the mechanical strength of paper was also greatly improved. By comparison of the paper performance and scanning electron microscopy (SEM) analysis
the deinking effect of cutinase was better than that of lipase.