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Accessible Unlicensed Requires Authentication Published by De Gruyter March 13, 2013

Multivariate-parameter optimization of the alkaline peroxide mechanical pulp (APMP) process for larch (Larix gmelinii Rupr.) using Box-Behnken design

Wenming He, Huiren Hu and Wang Li
From the journal Holzforschung


The study is aiming at the finding of optimal pulping conditions for the alkaline peroxide mechanical pulping process applied to larch in terms of brightness (% ISO) and tensile strength (TS). Based on three variables, the Box-Behnken experimental design was applied to determine the effects of the first-stage and second-stage dosages of H2O2 and the impregnation temperature on % ISO and TS. The equations based on the quadratic regression analysis were developed, which describe the response behaviors as the simultaneous functions of the selected independent variables. The best brightness achieved was 75.4% ISO under the following conditions: first-stage H2O2 3.5%, second-stage H2O2 3.54%, and impregnation temperature 81.4°C. The best TS (37.2 N·m g-1) was found under the following conditions: first-stage H2O2 2.4%, second-stage H2O2 3.9%, and impregnation temperature 90°C.

Corresponding author: Wenming He, Tianjin Key Lab of Pulp and Paper, Tianjin University of Science & Technology, Tianjin 300457, China, e-mail:


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Received: 2012-10-23
Accepted: 2013-1-18
Published Online: 2013-03-13
Published in Print: 2013-10-01

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