Investigating the effect of pH on cellulase enzyme efficiency on the OCC pulp properties

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ASADPOUR GH.; Boroshkian H.; RESALATY H.

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Paper Information

Journal: Iranian Journal of Wood and Paper Science Research Year:2018 | Volume:33 | Issue:3 (64) Page(s): 381-390

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Title

Investigating the effect of pH on cellulase enzyme efficiency on the OCC pulp properties

Author(s)

ASADPOUR GH. | Boroshkian H. | RESALATY H. | Issue Writer Certificate

Keywords

OCC pulpQ1

cellulase enzymeQ1

freenessQ2

pH effectQ1

Abstract

The purpose of this study is to investigate the effect of pH on cellulase enzyme activity measuring drainage and strength properties of OCC pulp. Recycled OCC pulp was pretreated at consistency 0. 4 percent, in constant condition of temperature; 50˚ C, duration 1 hour and pH range of: 4-4. 5, 8-8. 5 applying cellulase enzyme at three levels (0. 1, 0. 3 and 0. 5 percent based on pulp dry weight). The results showed that pretreatment of cellulase enhances the freeness of pulp in comparison with the control samples, but by increasing the concentration of enzyme, the freeness of pulp was reduced in pH: 4-4. 5 the highest freeness was measured at the level of 0. 1 percent and in pH: 8-8. 5 at the level of 0. 3 percent. Also, papers were evaluated for strength properties. The results showed that the increase in the use of cellulase enzyme has increased the tensile and burst strength index. As, in the alkaline pH, the effect of the cellulase enzyme on the increase of these strength was higher than the acid pH. The OCC pulp tear strength index, only in low levels of cellulase enzyme and in acidic pH, increased strength was observed, but with increasing enzyme consumption, there was a decrease in tear strength. Also, for strength to crushing, there was no specific trend regarding the amount of enzyme and pH on enzyme function.

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APA: Copy

ASADPOUR, GH., Boroshkian, H., & RESALATY, H.. (2018). Investigating the effect of pH on cellulase enzyme efficiency on the OCC pulp properties. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 33(3 (64) ), 381-390. SID. https://sid.ir/paper/109616/en

Vancouver: Copy

ASADPOUR GH., Boroshkian H., RESALATY H.. Investigating the effect of pH on cellulase enzyme efficiency on the OCC pulp properties. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2018;33(3 (64) ):381-390. Available from: https://sid.ir/paper/109616/en

IEEE: Copy

GH. ASADPOUR, H. Boroshkian, and H. RESALATY, “Investigating the effect of pH on cellulase enzyme efficiency on the OCC pulp properties,” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 33, no. 3 (64) , pp. 381–390, 2018, [Online]. Available: https://sid.ir/paper/109616/en

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