Levulinic acid production by two-step acid-catalyzed treatment of  Quercus mongolica  using dilute sulfuric acid

Jeong, Hanseob; Jang, Soo-Kyeong; Hong, Chang-Young; Kim, Seon-Hong; Lee, Su-Yeon; Lee, Soo Min; Choi, Joon Weon; Choi, In-Gyu

doi:10.1016/j.biortech.2016.11.063

Cited by 62 publications

(22 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The two-stage method ensures a high degree of bioconversion of waste, e.g., from Quercus mongolica, however, compared to the one-stage method with the use of microwaves, it is more energy-consuming due to the need for pretreatment at an elevated temperature. Similarly to this work, Jeong et al (2017) reported that the use of a higher concentration of sulfuric acid (2% v/v) in the two-step method improved the efficiency of carbohydrate conversion to LA, despite the differences in technology between one-and two-step processes [23].…”

Section: Raw Materialssupporting

confidence: 63%

“…It is worth noting that the relative increase in conversion efficiency with a higher concentration of phosphoric acid (2% v/v) was more pronounced than that observed when the In experiments with the conversion of sweet cherry chips (hardwood raw material) to LA, the highest values of efficiency indicators were also observed when sulfuric acid was used as the catalyst ( Figure 5E,F, Tables 3 and 4). carbohydrate conversion to LA, despite the differences in technology between one-and two-step processes [23].…”

Section: La Production From Soft-and Hardwood Chips Using Nitric Phomentioning

confidence: 99%

“…The concept of levulinic acid production using the one-stage microwave conversion method, which was the subject of this paper, is an alternative to the method of LA production in a two-stage system with biomass pretreatment as the first stage [23]. The two-stage method ensures a high degree of bioconversion of waste, e.g., from Quercus mongolica, however, compared to the one-stage method with the use of microwaves, it is more energy-consuming due to the need for pretreatment at an elevated temperature.…”

Section: Raw Materialsmentioning

confidence: 99%

“…The pretreatment and acid hydrolysis process is usually carried out at an elevated temperature and pressure. In the second stage, also most frequently carried out at a higher temperature and pressure, hexoses are dehydrated to form levulinic acid [23].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microwave-Assisted One-Step Conversion of Wood Wastes into Levulinic Acid

Kłosowski¹,

Mikulski²,

Menka³

2019

Catalysts

View full text Add to dashboard Cite

This study aimed to evaluate the use of softwood and hardwood waste for the production of levulinic acid by one-stage conversion using microwave radiation combined with acid catalysis. The analysis demonstrated that the type and concentration of the acid used, the concentration of biomass in the reaction mixture and pressure value had the greatest impact on the yield of levulinic acid. The highest efficiency of carbohydrate conversion to levulinic acid, regardless of the type of raw material, was achieved using a pressure of 225 PSI and sulfuric acid as a catalyst. Maximum yield from biomass, ca. 16.5% for cherry wood chips and ca. 25% for pine chips, was obtained using sulfuric acid at a concentration of 1% v/v and 2% v/v, respectively, for the following process parameters: Exposure time 20 min, biomass concentration 3.3%, and the pressure of 225 PSI. The ratio of actual yield to theoretical yield was high: 64.7% ± 4.5% for pine chips and 43.4% ± 1.0% for cherry wood chips. High efficiency of the presented method of biomass conversion to levulinic acid indicates the possibility of its use for waste management in the wood processing industry. High concentration of levulinic acid in the post-reaction mixture allows for cost-effective extraction and purification of the compound.

show abstract

Section: Raw Materialssupporting

confidence: 63%

Section: La Production From Soft-and Hardwood Chips Using Nitric Phomentioning

confidence: 99%

Section: Raw Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microwave-Assisted One-Step Conversion of Wood Wastes into Levulinic Acid

Kłosowski¹,

Mikulski²,

Menka³

2019

Catalysts

View full text Add to dashboard Cite

show abstract

“…In 2017, they used the solid fraction for second step acid-catalyzed treatment by using H 2 SO 4 as the homogeneous catalyst. The highest LA yield of 16.5% (g/100 g biomass) was produced in the optimum condition [77]. On the other hand, in 2018, they used the liquid hydrolysate for catalytic conversion of C 5 sugar to LA by using the heterogeneous catalyst of alkaline-treated zeolites Y (commercial).…”

Section: La Production From Second Generation Of Biomass: Food Wasmentioning

confidence: 99%

Catalytic Production of Levulinic Acid (LA) from Actual Biomass

et al. 2019

View full text Add to dashboard Cite

Catalytic conversion of actual biomass to valuable chemicals is a crucial issue in green chemistry. This review discusses on the recent approach in the levulinic acid (LA) formation from three prominent generations of biomasses. Our paper highlights the impact of the nature of different types of biomass and their complex structure and impurities, different groups of catalyst, solvents, and reaction system, and condition and all related pros and cons for this process.

show abstract