Changes of Furfural and Levulinic Acid Yield from Small-diameter Quercus mongolica Depending on Dilute Acid Pretreatment Conditions

Jang, Soo-Kyeong; Jeong, Hanseob; Hong, Chang-Young; Kim, Ho‐Yong; Ryu, Gahee; Yeo, Hwanmyeong; Choi, Joon W.; Choi, In-Gyu

doi:10.5658/wood.2015.43.6.838

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…Then, yield decreased when the temperature increased above 185 • C regardless of the xylose concentration. These results are similar to the findings from previous research where furfural production from biomass occurred using sulfuric acid as a catalyst [27,28]. Figure 1c depicts the relationship between the furfural yield, the reaction time, and xylose concentration with a fixed reaction temperature of 160 • C. The furfural yield increased with reaction time up to 180 min.…”

Section: Rsm For Furfural Production From Xylose Standard Solution With Extracting Solventsupporting

confidence: 88%

A Simultaneous Conversion and Extraction of Furfural from Pentose in Dilute Acid Hydrolysate of Quercus mongolica Using an Aqueous Biphasic System

et al. 2020

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This study optimizes furfural production from pentose released in the liquid hydrolysate of hardwood using an aqueous biphasic system. Dilute acid pretreatment with 4% sulfuric acid was conducted to extract pentose from liquid Quercus mongolica hydrolysate. To produce furfural from xylose, a xylose standard solution with the same acid concentration of the liquid hydrolysate and extracting solvent (tetrahydrofuran) were applied to the aqueous biphasic system. A response surface methodology was adopted to optimize furfural production in the aqueous biphasic system. A maximum furfural yield of 72.39% was achieved at optimal conditions as per the RSM; a reaction temperature of 170 °C, reaction time of 120 min, and a xylose concentration of 10 g/L. Tetrahydrofuran, toluene, and dimethyl sulfoxide were evaluated to understand the effects of the solvent on furfural production. Tetrahydrofuran generated the highest furfural yield, while DMSO gave the lowest yield. A furfural yield of 68.20% from pentose was achieved in the liquid hydrolysate of Quercus mongolica under optimal conditions using tetrahydrofuran as the extracting solvent. The aqueous and tetrahydrofuran fractions were separated from the aqueous biphasic solvent by salting out using sodium chloride, and 94.63% of the furfural produced was drawn out through two extractions using tetrahydrofuran.

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Section: Rsm For Furfural Production From Xylose Standard Solution With Extracting Solventsupporting

confidence: 88%

A Simultaneous Conversion and Extraction of Furfural from Pentose in Dilute Acid Hydrolysate of Quercus mongolica Using an Aqueous Biphasic System

et al. 2020

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“…The relative monosaccharide proportions were calculated after analyzing holocellulose contents in different wood samples using Bio-LC (ICS-2500, Dionex, USA) (Jang et al, 2015). These analytical results can provide the characteristic information depending on species and production region.…”

Section: Chemical Analysismentioning

confidence: 99%

Possibility of Wood Classification in Korean Softwood Species Using Near-infrared Spectroscopy Based on Their Chemical Compositions

Park¹,

Kim²,

Kim³

et al. 2017

Journal of the Korean Wood Science and Technology

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This study was to establish the interrelation between chemical compositions and near infrared (NIR) spectra for the classification on distinguishability of domestic gymnosperms. Traditional wet chemistry methods and infrared spectral analyses were performed. In chemical compositions of five softwood species including larch (Larix kaempferi), red pine (Pinus densiflora), Korean pine (Pinus koraiensis), cypress (Chamaecyparis obtusa), and cedar (Cryptomeria japonica), their extractives and lignin contents provided the major information for distinction between the wood species. However, depending on the production region and purchasing time of woods, chemical compositions were different even though in same species. Especially, red pine harvested from Naju showed the highest extractive content about 16.3%, whereas that from Donghae showed about 5.0%. These results were expected due to different environmental conditions such as sunshine amount, nutrients and moisture contents, and these phenomena were also observed in other species. As a result of the principal component analysis (PCA) using NIR between five species (total 19 samples), the samples were divided into three groups in the score plot based on principal component (PC) 1 and principal component (PC) 2; group 1) red pine and Korean pine, group 2) larch, and group 3) cypress and cedar. Based on the chemical composition results, it was concluded that extractive content was highly relevant to wood classification by NIR analysis.

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“…Wood particles are a widely used lignocellulosic biomass in Korea and are usually pretreated physically or chemically after air drying (Jang et al, 2015, Ryu et al, 2016. However, air drying is a very slow process and wood particles can start to decay (Jung, 1990;Kang and Kim, 2004).…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency of Fluidized Bed Drying for Wood Particles

Park¹,

Chang²,

Park³

et al. 2016

Journal of the Korean Wood Science and Technology

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This study evaluates the economic feasibility of industrializing fluidized bed dryer for wood particles. The theoretically required heat energy and energy efficiency were evaluated using a pilot scale fluidized bed dryer. When Mongolian Oak wood particles with 50% initial moisture content were dried in the fluidized bed dryer with air of 70℃ air circulating at 1.1-1.3 m/s for 30 minutes, the total theoretically required heat energy was 2,177 kJ. Of this, 1,763 kJ (approximately 81.0%) was used to heat the air flowing in from outside the dryer and 386 kJ (approximately 17.7%) was used to heat and remove water from the wood particles. Actual energy consumed was 7,560 kJ, giving energy efficiency of 28.8%. Thus, to industrialize a drying method such as fluidized bed drying, where the dryer volume is significantly larger than the volume of wood particles, it is necessary to minimize energy loss and maximize energy efficiency by designing the dryer size considering the amount of wood particles and choosing a suitable air circulation rate.

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Changes of Furfural and Levulinic Acid Yield from Small-diameter Quercus mongolica Depending on Dilute Acid Pretreatment Conditions

Cited by 4 publications

References 20 publications

A Simultaneous Conversion and Extraction of Furfural from Pentose in Dilute Acid Hydrolysate of Quercus mongolica Using an Aqueous Biphasic System

A Simultaneous Conversion and Extraction of Furfural from Pentose in Dilute Acid Hydrolysate of Quercus mongolica Using an Aqueous Biphasic System

Possibility of Wood Classification in Korean Softwood Species Using Near-infrared Spectroscopy Based on Their Chemical Compositions

Energy Efficiency of Fluidized Bed Drying for Wood Particles

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