Special Issue "Progress in Biorefinery of Lignocellulosic Biomass to Bio-energies and Bio-based Chemicals"

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Sustainable Processes".

Deadline for manuscript submissions: 15 April 2022.

Special Issue Editor

Prof. Dr. Yu-Cai He
E-Mail Website
Guest Editor
National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Pharmacy, Changzhou University, Changzhou, China
Interests: biomass and bioenergy; biocatalysis

Special Issue Information

Dear Colleagues,

To date, the rapidly growing, worldwide environmental concerns and expeditiously dwindling fossil fuels have been attracting increasing attention. Lignocellulosic biomass is composed of three macromolecules, namely celluloses, hemicellulose, and lignin. It is the most common abundant raw material for the biorefinery of renewables to value-added biofuels, functional materials, and biobased chemicals worldwide.

Highly efficient utilization of lignocellulosic biomass has attracted explosive research interests in chemistry, biology, environment, and energy. The types of lignocelluosic biomass must be carefully selected because there are various sources that can interfere with the food chain, so it is necessary to identify non-edible sources to be valorized. Research into the highly efficient conversion of renewable lignocellulose into valuable products is crucial for reducing international dependency on conventional petroleum-based resources and increasing environmental and economic viability.

Lignocellulosic biorefinery processes with lignocellulosic biomass can be performed in multiple steps, such as pretreatment, saccharification, fermentation, chemocatalysis, biocatalysis, and further downstream processing, to attain numerous valuable products. This Special Issue highlights the progress in the biorefinery of lignocellulosic biomass to bioenergies and bio-based chemicals.

Prof. Dr. Yu-Cai He
Guest Editor

Manuscript Submission Information

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Keywords

  • biomass pretreatment
  • biorefinery
  • biofuels
  • value-added chemicals
  • process optimization
  • process integration

Published Papers (3 papers)

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Research

Article
Chemoenzymatic Conversion of Biomass-Derived D-Xylose to Furfuryl Alcohol with Corn Stalk-Based Solid Acid Catalyst and Reductase Biocatalyst in a Deep Eutectic Solvent–Water System
Processes 2022, 10(1), 113; https://0-doi-org.brum.beds.ac.uk/10.3390/pr10010113 - 06 Jan 2022
Viewed by 78
Abstract
In this work, the feasibility of chemoenzymatically transforming biomass-derived D-xylose to furfuryl alcohol was demonstrated in a tandem reaction with SO42−/SnO2-CS chemocatalyst and reductase biocatalyst in the deep eutectic solvent (DES)–water media. The high furfural yield (44.6%) [...] Read more.
In this work, the feasibility of chemoenzymatically transforming biomass-derived D-xylose to furfuryl alcohol was demonstrated in a tandem reaction with SO42−/SnO2-CS chemocatalyst and reductase biocatalyst in the deep eutectic solvent (DES)–water media. The high furfural yield (44.6%) was obtained by catalyzing biomass-derived D-xylose (75.0 g/L) in 20 min at 185 °C with SO42−/SnO2-CS (1.2 wt%) in DES ChCl:EG–water (5:95, v/v). Subsequently, recombinant E.coli CF cells harboring reductases transformed D-xylose-derived furfural (200.0 mM) to furfuryl alcohol in the yield of 35.7% (based on D-xylose) at 35 °C and pH 7.5 using HCOONa as cosubstrate in ChCl:EG–water. This chemoenzymatic cascade catalysis strategy could be employed for the sustainable production of value-added furan-based chemical from renewable bioresource. Full article
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Article
Enhanced Saccharification of Purple Alfalfa via Sequential Pretreatment with Acidified Ethylene Glycol and Urea/NaOH
Processes 2022, 10(1), 61; https://0-doi-org.brum.beds.ac.uk/10.3390/pr10010061 - 28 Dec 2021
Viewed by 127
Abstract
Purple Alfalfa is an inexpensive, abundant, readily available lignocellulosic material. This work was attempted to develop an efficient combination pretreatment by sequential HClO4–ethyl glycol–H2O (1.2:88.8:10, w/w/w) extraction at 130 °C in 0.5 h and [...] Read more.
Purple Alfalfa is an inexpensive, abundant, readily available lignocellulosic material. This work was attempted to develop an efficient combination pretreatment by sequential HClO4–ethyl glycol–H2O (1.2:88.8:10, w/w/w) extraction at 130 °C in 0.5 h and urea/NaOH (urea 12 wt%, NaOH 7 wt%) soaking at −20 °C for 0.5 h for the pretreatment of purple alfalfa. The porosity, morphology, and crystallinity of pretreated purple alfalfa were characterized with SEM, FM, XRD, and FTIR. This combination pretreatment had a significant influence on hemicellulose removal and delignification. The above changes could enhance cellulose accessibility to enzymes and improve the enzymatic digestibility of cellulose. High yields of reducing sugars from pretreated purple alfalfa were obtained at 93.4%. In summary, this combination pretreatment has high potential application in the future. Full article
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Article
Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier
Processes 2021, 9(12), 2269; https://0-doi-org.brum.beds.ac.uk/10.3390/pr9122269 - 17 Dec 2021
Viewed by 301
Abstract
Recently, the highly efficient production of value-added biobased chemicals from available, inexpensive, and renewable biomass has gained more and more attention in a sustainable catalytic process. Furfural is a versatile biobased chemical, which has been widely used for making solvents, lubricants, inks, adhesives, [...] Read more.
Recently, the highly efficient production of value-added biobased chemicals from available, inexpensive, and renewable biomass has gained more and more attention in a sustainable catalytic process. Furfural is a versatile biobased chemical, which has been widely used for making solvents, lubricants, inks, adhesives, antacids, polymers, plastics, fuels, fragrances, flavors, fungicides, fertilizers, nematicides, agrochemicals, and pharmaceuticals. In this work, ultrasonic-treated chestnut shell waste (UTS-CSW) was utilized as biobased support to prepare biomass-based heterogeneous catalyst (CSUTS-CSW) for transforming waste lignocellulosic materials into furfural. The pore and surface properties of CSUTS-CSW were characterized with BET, SEM, XRD, and FT-IR. In toluene–water (2:1, v:v; pH 1.0), CSUTS-CSW (3.6 wt%) converted corncob into furfural yield in the yield of 68.7% at 180 °C in 15 min. CSUTS-CSW had high activity and thermostability, which could be recycled and reused for seven batches. From first to seventh, the yields were obtained from 68.7 to 47.5%. Clearly, this biobased solid acid CSUTS-CSW could be used for the sustainable conversion of waste biomasses into furfural, which had potential application in future. Full article
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