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Information Journal Paper

Title

EFFECT OF LACTASE ENZYME ON DELIGNIFICATION AND PHYSICAL PROPERTIES OF OCC PULP

Pages

  157-170

Keywords

OLD CORRUGATED CONTAINER (OCC)Q2
WATER RETENTION VALUE (WRV)Q2

Abstract

 Old Corrugated Container (OCC) recycled pulp provided by a local paper manufacturing company was treated by LACTASE ENZYME. The pulp was sampled from headbox and treated by enzyme in the conditions of consistency 2%, pH 5, reaction time 2 hours, and reaction temperature 60°C in dosing levels of 0.005, 0.01 and 0.015 % based on oven-dried weight of pulp. Fiber classification of the control pulp showed 31.3 % of fines content and 0.82 mm average fiber length. Results have indicated that lactase treatment decreased KAPPA NUMBER and SR DEGREE to 20% and 14 degrees, respectively which consequently facilitated the drainage of pulp. The extraction of treated samples showed a peak at around 280 nm, confirming the delignification of pulp by enzyme. Microscopic observation of fiber walls of the treated sample indicated a local separation of middle lamella, fiber linting and removal of fines from fiber surface. The highest Water Retention Value (WRV) was measured to be at 0.015% enzyme addition level. The APPARENT DENSITY of handsheets made from treated samples was lower compared with the handsheets made of control pulp resulting in loss of paper strengths.

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    APA: Copy

    MORADI, M., KERMANIAN, H., MAHDAVI, S., & RAMEZANI, O.. (2013). EFFECT OF LACTASE ENZYME ON DELIGNIFICATION AND PHYSICAL PROPERTIES OF OCC PULP. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, 3(2), 157-170. SID. https://sid.ir/paper/184241/en

    Vancouver: Copy

    MORADI M., KERMANIAN H., MAHDAVI S., RAMEZANI O.. EFFECT OF LACTASE ENZYME ON DELIGNIFICATION AND PHYSICAL PROPERTIES OF OCC PULP. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES[Internet]. 2013;3(2):157-170. Available from: https://sid.ir/paper/184241/en

    IEEE: Copy

    M. MORADI, H. KERMANIAN, S. MAHDAVI, and O. RAMEZANI, “EFFECT OF LACTASE ENZYME ON DELIGNIFICATION AND PHYSICAL PROPERTIES OF OCC PULP,” IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, vol. 3, no. 2, pp. 157–170, 2013, [Online]. Available: https://sid.ir/paper/184241/en

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