A1 Journal article (refereed)
Effect of sodium borohydride and hydrogen peroxide pretreatments on soda pulping of sugar maple (Acer saccharum) (2021)


Lehto, J., van Heiningen, A., Patil, R., Louhelainen, J., & Alén, R. (2021). Effect of sodium borohydride and hydrogen peroxide pretreatments on soda pulping of sugar maple (Acer saccharum). Journal of Wood Chemistry and Technology, 41(2-3), 128-136. https://doi.org/10.1080/02773813.2021.1922456


JYU authors or editors


Publication details

All authors or editors: Lehto, Joni; van Heiningen, Adriaan; Patil, Ravikant; Louhelainen, Jarmo; Alén, Raimo

Journal or series: Journal of Wood Chemistry and Technology

ISSN: 0277-3813

eISSN: 1532-2319

Publication year: 2021

Volume: 41

Issue number: 2-3

Pages range: 128-136

Publisher: Taylor & Francis

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1080/02773813.2021.1922456

Publication open access: Not open

Publication channel open access:


Abstract

For recovering value-added wood-based organic material prior to delignification, sodium borohydride (NaBH4) and hydrogen peroxide (H2O2) pretreatments under alkaline conditions were performed before soda pulping of sugar maple (Acer saccharum) chips with sodium hydroxide (NaOH). In this investigation, it was determined whether the pulp yield could be increased by partly stabilizing the hemicelluloses by these pretreatments, and simultaneously obtains lower pulp kappa numbers. The results indicated that when aiming to the same kappa numbers (i.e., kappa numbers 14.3-20.5), roughly 3% higher pulp yield could be achieved if the chips were pretreated with alkaline 0.5% NaBH4 solutions, compared to those produced without such pretreatment or pretreated only with NaOH (i.e., without NaBH4). In contrast, pretreatments conducted with alkaline 2.5% H2O2 did clearly lower pulp yields at the same kappa number range (14.0-22.7) when compared to the reference cooks conducted with NaOH pretreated materials. However, an increase in the H2O2 charge of the pretreatment from 2.5% to 5.0% had a clearly beneficial effect, as the pulp yield and kappa numbers after pulping of 5.0% H2O2 pretreated pulps were comparable to the reference cooks.


Keywords: pulping; preliminary treatment; hydrogen peroxide; sodium hydroxide; maple

Free keywords: hydrogen peroxide; pretreatment; soda cooking; sodium borohydride; sugar maple


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2021

Preliminary JUFO rating: 1


Last updated on 2021-07-07 at 17:54