Deinking process of Old Newsprint(ONP) by using Modified Cellulase with synthesized copolymer 


Vol. 10,  No. 4, pp. 195-201, Dec.  2004


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  Abstract

Cellulase was modified with copolymer with polyethylene(PE) /polypropylene(PP) oxide and maleic anhydride(MA) by maleylation reaction, and modified cellulase was applied to the reprocessing of old newsprint (ONP). Cellulase of modified cellulase enhanced the detachment of ink particles by fibrillation of fiber. The copolymer, which acted as the surfactant formed bubbles and removed the ink particles in the floatation process. Modified cellulase showed the same deinking ability without excess dosage compared with the conventional method. And, it improved the physical properties including tensile strength, brightness, and whiteness compared with the conventional deinking process. The bond between the ink and fiber got stronger as the storage time increased, and it became very difficult to remove the ink particle. But, modified cellulase increased the deinking ability by 41% compared with the conventional process at the experiment of the ONP for 1 year storage time. It removed the yellowing and increased the whiteness and brightness as well as tensile strength and internal bond strength.

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  Cite this article

[IEEE Style]

K. H, K. TH, P. J, P. K, "Deinking process of Old Newsprint(ONP) by using Modified Cellulase with synthesized copolymer," Clean Technology, vol. 10, no. 4, pp. 195-201, 2004. DOI: .

[ACM Style]

Kim H, Kwak TH, Park J, and Park K. 2004. Deinking process of Old Newsprint(ONP) by using Modified Cellulase with synthesized copolymer. Clean Technology, 10, 4, (2004), 195-201. DOI: .

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