A Critical Role for the Presence of Lignocellulosic Material in the Determination of Wood Buffering Capacity. (2nd November 2017)

• Record Type: Journal Article
• Authors: Król, Patryk; Toczyłowska-Mamińska, Renata; Mamiński, Mariusz
• Is Part Of: Journal of wood chemistry and technology. Volume 37:Number 6(2017)
• Page Start: 478
• Page End: 484
• Publication Date: 2017-11-02
• Subjects: Acidity -- buffering capacity -- wood -- titration; Wood -- Chemistry -- Periodicals; Wood; Wood -- Chemistry; Periodicals; 674.13
• DOI: 10.1080/02773813.2017.1347683
• Languages: English
• ISSNs: 0277-3813

Abstract

Abstract : The currently used determinations of wood buffering capacity, which are based on pH-metric titrations of aqueous wood extracts, neglect the effect of lignocellulosic material and the role of its insoluble constituents. This study examined the influence of the presence of wood in a system subjected to titration. A comparison of the results obtained from pine chip extracts and chip suspensions showed that the presence of wood and the wood-to-water ratio were critical factors that affected the measurement of the wood buffering capacity. The evidence showed that the resulting determination may vary by up to six times (0.28–1.99 ml/g), depending upon the conditions of the titration. In addition, it was found that the presence of wood had a neutralizing effect over the course of prolonged pH observations.