John J. Tomashek
Novozymes
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Publication
Featured researches published by John J. Tomashek.
Holzforschung | 2009
Peter W. Hart; Darrell M. Waite; Luc Thibault; John J. Tomashek; Marie-Eve Rousseau; Christopher Hill; Marc Sabourin
Abstract Eucalyptus wood chips were impregnated with various blends of fiber modifying enzymes prior to preconditioning refiner chemical-alkaline peroxide mechanical pulp processing. The process includes chemical pretreatment and two stages of refining. The energy consumption was compared at the same Canadian standard freeness level of 350 ml. Some enzyme treatments were found to reduce specific refining energy (SRE) by at least 24%. The enzyme hydrolysis within the cell wall was observed by transmission electron microscopy of impregnated chips with high spatial resolution. The enzyme blends that successfully reduced SRE requirements were found to selectively loosen the bonds between the S1 and S2 layers of the fiber wall. Enzymes which selectively attached the S2 layer did not impart any SRE reduction. All experiments for impregnation and pulp processing were conducted at the Andritz Pilot Plant in Springfield, OH.
Archive | 2008
Brian R. Scott; Christopher Hill; John J. Tomashek; Chengsong Liu
Archive | 2007
Christopher Hill; Brian R. Scott; John J. Tomashek
Archive | 2012
Christopher Hill; John J. Tomashek; Loreta Gudynaite-Savitch; Guylaine Therrien; Sophie Calixte
Archive | 2009
Christopher Hill; James Lavigne; Martine Whissel; John J. Tomashek
Archive | 2009
James Lavigne; Christopher Hill; Annie Tremblay; Patrick St-Pierre; John J. Tomashek
Archive | 2010
Brian R. Scott; Patrick St-Pierre; James Lavigne; Nabil Masri; Theresa C. White; John J. Tomashek
Archive | 2010
Brian R. Scott; Chengsong Liu; James Lavigne; John J. Tomashek
Archive | 2012
Jacqueline Montalibet; Loreta Gudynaite-Savitch; Christopher Hill; Christopher D. Hindle; James Lavigne; Nabil Masri; Fuad Tahna; John J. Tomashek
Archive | 2009
James Lavigne; Brian R. Scott; Martine Whissel; John J. Tomashek