Title:
Study of a Novel Bio-Refining Method for Obtaining 2-Furaldehyde, Acetic Acid and Pulp from Birch Wood
Author(s):
Puke, M., Godina, D., Brazdausks, P., Rizikovs, J.
Document(s):
Paper
Poster
Abstract:
The scientific goal of this study is to carry out industrial interdisciplinary research which will combine the chemical engineering and material science sectors and will promote the transfer of knowledge and the development of a new biorefinery process concept for the processing of birch wood in 2-furaldehyde, acetic acid and, at the same time, preserving the lignocellulose (LC) residue so that it could be used in pulp production. This would show that these two different technological processes can be combined into one biorefinery technology chain that has not been possible so far. In Latvia’s climatic conditions, birch wood can be used as raw material in the biorefinery can be used in the new biorefinery concept for production of 2-furaldehyde, acetic acid and subsequent cellulose pulp obtaining, using thermomechanical and alkaline peroxide mechanical pulping process. To achieve the objective several screening tests were performed, and further experimental plan was developed using DesingExpert11. Process yields were analyzed both in terms of total yield and at individual time increments. In addition, obtained LC residue was also characterized. Unique bench-scale reactor system was used to obtain a 2-furaldehyde and acetic acid, and LC residue without pentoses and with maximum preservation of cellulose fiber for further use. Studies on the deacetylation and dehydration of birch wood hemicelluloses of pentose monosaccharides to 2-furaldehyde and acetic acid using orthophosphoric acid as a catalyst were carried out. Results showed that depending on the used pretreatment conditions the 2-furaldehyde yield was from 0.04 to 10.84% o.d.m., the acetic acid yield was from 0.51 to 6.50% o.d.m. and the LC residue yield was from 68.13 to 98.07% o.d.m. with minimal content of admixtures. Process optimization using DesignExpert11 revealed that the main pretreatment process parameters that influence the yield of 2-furaldehyde in the pretreatment process are process temperature (53.3%) and process duration (29.8%). In addition, experimentally was developed the best 2-furaldehyde production conditions to optimize purity and usability of cellulose in leftover of LC material. Best results in terms of both 2-furaldehyde yield of residual LC were obtained in experiment where catalyst concentration was 70%, catalyst amount 4 wt.%, reaction temperature 175 . and treatment time 60 min.
Keywords:
cellulose, pretreatment, 2-furaldehyde, birch wood
Topic:
Biomass Conversion to Bio-Based Products and Chemicals
Subtopic:
Processes for bio-based chemicals and materials
Event:
30th European Biomass Conference and Exhibition
Session:
6BV.2.17
Pages:
1115 - 1121
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-6BV.2.17
Price:
FREE
