Effect of the Acid Hydrolysis Temperature on the Conversion of Birch Wood Hemicelluloses into Furfural

Brazdausks, Prans; Vederņikovs, Nikolajs; Puķe, Māris; Krūma, Irēna

doi:10.4028/www.scientific.net/kem.604.245

Cited by 5 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optimization of the temperature and the residence time to maximize the simulated furfural yield was carried out using 'fminsearch' routine. In agreement with previous studies, [31][32][33] furfural yield and xylose conversion were observed to be strongly inuenced by the treatment temperature. As seen in Fig.…”

Section: Single Component Solutions Of D-xylosesupporting

confidence: 92%

The role of xylulose as an intermediate in xylose conversion to furfural: insights via experiments and kinetic modelling

et al. 2015

View full text Add to dashboard Cite

An experimental work has been performed to study the relevance of xylulose as an intermediate in xylose conversion to furfural in aqueous solution. The furfural formation was investigated at the temperature range from 180 to 220 C during non-catalyzed and acid-catalyzed conversion of xylose in a stirred microwaveassisted batch reactor. The separate experiments on xylulose and furfural conversions were carried out under similar conditions. The maximum furfural yields obtained from xylose were 48 mol% and 65 mol% for the non-catalyzed and the acid-catalyzed processes, respectively. It was shown that the furfural yield is significantly lower from xylulose than from xylose. Furthermore, the effects of initial xylose concentration and the formation of xylulose were investigated in a mechanistic modeling study. A new reaction mechanism was developed taking into account the xylulose formation from xylose. Based on the experimental results and the proposed reaction model, it was concluded that xylose isomerization to xylulose with subsequent furfural formation is not a primary reaction pathway. The obtained kinetic parameters were further used for plug flow reactor simulations to evaluate furfural yields achievable by an optimized continuous operation.

show abstract

Section: Single Component Solutions Of D-xylosesupporting

confidence: 92%

The role of xylulose as an intermediate in xylose conversion to furfural: insights via experiments and kinetic modelling

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Temperature has demonstrated a greater effect on the production of xylose and furfural, rather than the time of pre-treatment, set at a fixed 1/10 (w/w) biomass/IL ratio and 1.24% (w/w) water content in the pre-treatment process [ 20 ]. Similar results were reported by P. Brazdausks and co-workers, who studied effect of the acid hydrolysis temperature and biomass pretreatment process time on the conversion of birch wood hemicelluloses into furfural at constant amount of catalyst loading, i.e., 3.0% [ 21 , 22 ]. Furfural has found its application in the manufacturing of green adhesive novolac-type PF resins owing to presence of aldehyde functional group and its extractability from renewable feedstock.…”

Section: Introductionsupporting

confidence: 83%

Phenol-Furfural Resin/Montmorillonite Based High-Pressure Green Composite from Renewable Feedstock (Saccharum munja) with Improved Thermo-Mechanical Properties

2020

View full text Add to dashboard Cite

This research endeavour aimed to explore the potential of a native, nonedible and low market value plant feedstock, i.e., Saccharum munja for green synthesis of woodware materials and improve its features by incorporating an economical blending material. A significant amount of furfural, i.e., 58%, was extracted from Saccharum munja through the modified acid digestion method. Extracted furfural was reacted with phenol to prepare phenol-furfural resin, an alternative to phenol-formaldehyde resin but with no harmful effects for humans. The synthesized resin was also blended with montmorillonite clay after modification via Dimethyl Sulfoxide (DMSO) treatment for improved thermo-mechanical properties. These resins and composites were characterized by XRD, SEM, and FTIR spectroscopy. Resultant resins and composites were further employed as a binding agent to make high-pressure composite from leftover plant residue by hot-press method. The resultant product was subjected to TGA analysis and furnished high value of degradation temperature (Tdeg), i.e., 607 °C. Prepared high-pressure composite samples were mechanically tested through compression tests by Tinius Olsen Testing Machine and hardness tests by Rockwell Hardness Tester. Its tensile strength value was 58.3 MPa while hardness value was found to be 64 RHB which was greater than mild copper with hardness value 48.9 RHB. Thus, green high-pressure composite material was successfully developed by employing Saccharum munja and montmorillonite clay while no toxic resin was used, nor was any residue left over.

show abstract

“…However, temperatures above 160 • C contributed to the formation of phenolic compounds, including furfural, levulinic acid, vanillin and vanillin acid, all of which could inhibit hydrogen and methane production [55]. Much higher furfural yield was documented by Brazdausks et al [56] who worked with birch wood (11% based on the weight of material, at 147 • C for 90 min). However, the birch wood hydrolysates contained much more lignin (24%) than sugar beet pulp (1-3%) and cellulose (45% versus 22-30%) while the amount of hemicellulose was comparable (around 25%).…”

Section: Composition Of Sugar Beet Pulp Hydrolysatesmentioning

confidence: 97%

The Use of Acidic Hydrolysates after Furfural Production from Sugar Waste Biomass as a Fermentation Medium in the Biotechnological Production of Hydrogen

et al. 2019

View full text Add to dashboard Cite

This study investigates a simultaneous processing of sugar beet pulp (SBP) for furfural, hydrogen and methane production using various pretreatment methods. In the experiments, sugar beet pulp was first subjected to thermal and thermochemical pretreatment at 140 °C. Then hydrolysates from these operations were investigated for their potential for methane and hydrogen production in batch tests. The experiments showed that thermal pretreatment of SBP resulted in the highest biogas and methane yields of 945 dm3/kg volatile solids (VS) and 374 dm3 CH4/kg VS, respectively, and a moderate hydrogen production of 113 dm3 H2/kg VS, which corresponded to a calculated energy production of 142 kWh/t; however, only low amount of furfural was obtained (1.63 g/L). Conversely, the highest furfural yield of 12 g/L was achieved via thermochemical pretreatment of SBP; however, biogas production from hydrolysate was much lower (215 dm3/kg VS) and contained only 67 dm3/kg VS of hydrogen. Meanwhile, in the experiment with lower amounts of sulfuric acid (2%) used for pretreatment, a moderate furfural production of 4 g/L was achieved with as high as 220 dm3/kg VS of hydrogen and the corresponding energy yield of 75 kWh/t.

show abstract

Effect of the Acid Hydrolysis Temperature on the Conversion of Birch Wood Hemicelluloses into Furfural

Cited by 5 publications

References 7 publications

The role of xylulose as an intermediate in xylose conversion to furfural: insights via experiments and kinetic modelling

The role of xylulose as an intermediate in xylose conversion to furfural: insights via experiments and kinetic modelling

Phenol-Furfural Resin/Montmorillonite Based High-Pressure Green Composite from Renewable Feedstock (Saccharum munja) with Improved Thermo-Mechanical Properties

The Use of Acidic Hydrolysates after Furfural Production from Sugar Waste Biomass as a Fermentation Medium in the Biotechnological Production of Hydrogen

Contact Info

Product

Resources

About