Deep eutectic solvent for lignocellulosic biomass fractionation and the subsequent conversion to bio-based products – A review

Tan, Yee Tong; Chua, Adeline Seak May; Ngoh, Gek Cheng

doi:10.1016/j.biortech.2019.122522

Cited by 187 publications

(44 citation statements)

References 85 publications

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“…Recently, various components have been used as HBDs to synthesize DESs, such as carboxylic acids, carbohydrates, polyalcohols, and amines/amides. [30] Exploring the influences between the HBDs functional groups types and catalytic conversion is of great value for developing tailored DESs, and the recent advances are shown in Table 1.…”

Section: Types and Numbers Of Functional Groups In Hbdsmentioning

confidence: 99%

Catalytic Conversion of Biomass to Furanic Derivatives with Deep Eutectic Solvents

Chen

Peng

et al. 2021

ChemSusChem

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Biomass is the only renewable organic carbon resource in nature, and the transformation of abundant biomass into various chemicals has received immense spotlight. As a novel generation of designer solvents, deep eutectic solvents (DESs) have been widely used in biorefinery due to their excellent properties including low cost, easy preparation, and biodegradability. Although there have been some reports summarizing the performance of DESs for the transformation of biomass into various chemicals, few Reviews illuminate the relationship between the functional structure of DESs and catalytic conversion of biomass. Hence, this Minireview comprehensively summarizes the effects of the types of functional groups in DESs on catalytic conversion of biomass into furanic derivatives, such as carboxylic acid-based hydrogen-bond donors (HBDs), carbohydrate-based HBDs, polyalcohol-based HBDs, amine/ amide-based HBDs, spatial structure of HBDs, and various hydrogen-bond acceptors (HBAs). It also further summarizes the effects of adding different additives into the DESs on the synthesis of high value-added chemicals, including water, liquid inorganic acids, Lewis acids, heteropoly acids, and typical solid acids. Moreover, current challenges and prospects for the application of DESs in biomass conversion are provided.

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Section: Types and Numbers Of Functional Groups In Hbdsmentioning

confidence: 99%

Catalytic Conversion of Biomass to Furanic Derivatives with Deep Eutectic Solvents

Chen

Peng

et al. 2021

ChemSusChem

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“…On the other hand, methods for separating biomass into well-established components are now well implemented, yet their environmental inputs will depend on the process used. [464][465][466] A life cycle analysis carried out by National Renewable Energy Laboratory of U.S. DOE office have predicted that depending on the fractionated and separated products obtained from lignocellulosic biomass, it is possible to achieve large greenhouse gas offset targets. [467,468]…”

Section: Feedstock Availability and Reproducibilitymentioning

confidence: 99%

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Luo

Barrio

Sunny

et al. 2021

Advanced Energy Materials

254

197

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Elevated concentrations of atmospheric greenhouse gases (GHGs), particularly carbon dioxide (CO 2 ), have affected the global environment, causing climate deviations and threatening the biodiversity. [1,2] Deep-cutting solutions and new technologies are thus imperative to repay the carbon debt. [3] Hydrogen (H 2 ) is an ideal fuel to enable a successful transition to a global zero emission economy: With a gravimetric energy density more than double that of conventional fuels like diesel, gasoline, and natural gas it is a lightweight energy carrier which can be converted to electricity and water via fuel cells and thus holds great promise to cut emissions of the transport and energy sectors to zero. Furthermore, it is an energy dense chemical which is already used in the chemical industry (i.e., ammonia via the Haber-Bosch process) and steel manufacturing. However, these industries currently use brown (made from coal via gasification and subsequent water gas shift reaction) and gray (made by steam methane reforming) hydrogen which both have significant CO 2 footprints. Thus, synthesizing green (meaning renewable) hydrogen cost-effectively is a solution which could green such industries and the transport sector and simultaneously meet our growing demands for viable energy storage solutions. However, switching from fossilfuels to a hydrogen economy requires efficient technologies that permit clean, sustainable and cost-effective production, storage, and utilization of H 2 . [4][5][6] Water electrolysis is a clean technology for green H 2 production, where water is split into H 2 at the cathode while O 2 is generated at the anode. Thermodynamically, the energy input required for this reaction equals an applied voltage of 1.23 V but in practice >1.8 V is commonly applied due to the sluggish kinetics of the oxygen evolution reaction (OER). The kinetics of the OER are complex. In addition to the thermodynamic potential of 1.23 V, even the best OER catalysts to date show significant overpotentials (0.35-0.4 V) which is due to suboptimal scaling relation between OOH and OH adsorption energies. [7,8] As a consequence, a significant amount of energy is spent on Biomass is recognized as an ideal CO 2 neutral, abundant, and renewable resource substitute to fossil fuels. The rich proton content in most biomass derived materials, such as ethanol, 5-hydroxymethylfurfural (HMF) and glycerol allows it to be an effective hydrogen carrier. The oxidation derivatives, such as 2,5-difurandicarboxylic acid from HMF, glyceric acid from glycerol are valuable products to be used in biodegradable polymers and pharmaceuticals. Therefore, combining biomass-derived compound oxidation at the anode and hydrogen evolution reaction at the cathode in a biomass electrolysis or photo-reforming reactor would present a promising strategy for coproducing high value chemicals and hydrogen with low energy consumption and CO 2 emissions. This review aims to combine fundamental knowledge on photo and electro-assisted catalysis to provide a comprehensive und...

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“…Recent studies demonstrate the suitability of eutectic solvents and ionic liquids for biomass fractionation [20][21][22][23][24]. These systems are reasonably easy to prepare in a pure state, do not require the presence of any solvent and produce no waste.…”

Section: Ohmentioning

confidence: 99%

Lignin Extraction from Waste Pine Sawdust Using a Biomass Derived Binary Solvent System

Magalhães

Filipe

Melro

et al. 2021

Preprint

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Lignocellulosic biomass fractionation is typically performed using methods that are somehow harsh to the environment, such as in the case of the kraft pulping. In recent years, the development of new sustainable and environmentally friendly alternatives has grown significantly. Among the developed systems, bio-based solvents emerge as promising alternatives for biomass processing. Therefore, in the present work, the bio-based and renewable chemicals, levulinic acid (LA) and formic acid (FA), were combined to fractionate lignocellulosic waste (i.e., Maritime pine sawdust) and isolate lignin. Different parameters, such as LA/FA ratio, temperature, and extraction time, were optimized to boost the yield and purity of extracted lignin. The LA/FA ratio was found to be crucial regarding the superior lignin extraction from the waste biomass. Moreover, the increase in temperature and extraction time enhances the amount of extracted residue but compromises the lignin purity and reduces its molecular weight. The electron microscopy images revealed that biomass samples suffer significant structural and morphological changes, which further suggests the suitability of the new developed bio-fractionation process. Same was concluded by the FTIR analysis, in which no remaining lignin was detected in the cellulose-rich fraction. Overall, the novel combination of bio-sourced FA and LA has shown to be a very promising system for lignin extraction of high purity from biomass waste, thus contributing to extend the opportunities of lignin manipulation and valorisation into novel added-value biomaterials.

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Deep eutectic solvent for lignocellulosic biomass fractionation and the subsequent conversion to bio-based products – A review

Cited by 187 publications

References 85 publications

Catalytic Conversion of Biomass to Furanic Derivatives with Deep Eutectic Solvents

Catalytic Conversion of Biomass to Furanic Derivatives with Deep Eutectic Solvents

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Lignin Extraction from Waste Pine Sawdust Using a Biomass Derived Binary Solvent System

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