FUNGAL PRETREATMENT OF ASPEN CHIPS IMPROVES STRENGTH OF REFINER MECHANICAL PULP.

Gary C. Myers, Gary F. Leatham, Theodore H. Wegner, Robert A. Blanchette

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Pretreatment of wood chips with lignin-degrading fungi can improve the strength properties of unbleached refiner mechanical pulps. We studied the effect of two white-rot fungi (Phanerochaete chrysosporium and Dichomitus squalens) prior to refiner mechanical pulping. Strength and optical properties were compared in handsheets prepared from mechanical pulp of treated and untreated wood chips. Both fungal pretreatments resulted in handsheet strength properties better than the control when compared at an equivalent freeness. Fungal pretreatment decreased brightness and light-scattering coefficients but did not adversely affect opacity. Brightness of fungus-pretreated pulps was restored to that of the control by use of hydrogen peroxide bleaching. Lignin content of the chips was reduced by the fungal pretreatments.

Original languageEnglish (US)
Pages (from-to)105-108
Number of pages4
JournalTappi journal
Volume71
Issue number5
StatePublished - May 1 1988

Fingerprint Dive into the research topics of 'FUNGAL PRETREATMENT OF ASPEN CHIPS IMPROVES STRENGTH OF REFINER MECHANICAL PULP.'. Together they form a unique fingerprint.

Cite this