Potential use of pure and diluted choline chloride-based deep eutectic solvent in delignification of oil palm fronds

New, Eng Kein; Wu, Ta Yeong; Lee, Cornelius Basil Tien Loong; Poon, Zi Yet; Loow, Yu Loong; Foo, Luther Yang Wei; Procentese, Alessandra; Siow, Lee Fong; Teoh, Wen Hui; Daud, Nik Norsyahariati Nik; Jahim, Jamaliah Md; Mohammad, Abdul Wahab

doi:10.1016/j.psep.2018.11.015

Cited by 85 publications

(44 citation statements)

References 51 publications

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“…However, the new aqueous mixed solvent gains new characteristic features. To study the effect of water addition and consequent improved viscosity of {ChCl:Urea} DES for delignification of oil palm fronds, New et al [168] pretreated the biomass sample with the prepared aqueous DES at 120 °C for 4 h. They found that the DES/water mixture had an improved lignin removal ability compared to pure DES. The energy requirement for biomass transformations can also be considered.…”

Section: Major Applications Of Deep Eutectic Solvents and Natural mentioning

confidence: 99%

Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste

2019

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Valorization of lignocellulosic biomass and food residues to obtain valuable chemicals is essential to the establishment of a sustainable and biobased economy in the modern world. The latest and greenest generation of ionic liquids (ILs) are deep eutectic solvents (DESs) and natural deep eutectic solvents (NADESs); these have shown great promise for various applications and have attracted considerable attention from researchers who seek versatile solvents with pretreatment, extraction, and catalysis capabilities in biomass- and biowaste-to-bioenergy conversion processes. The present work aimed to review the use of DESs and NADESs in the valorization of biomass and biowaste as pretreatment or extraction solvents or catalysis agents.

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Section: Major Applications Of Deep Eutectic Solvents and Natural mentioning

confidence: 99%

Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste

2019

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“…15,16 At present, DESs have been applied in the extraction of some specific biopolymers like flavonoids, 17 polyphenols, 18 and alkaloids. 19 And they are used as an alternative solvent for dissolving the polysaccharides 20 (ie, cellulose, 21 xylose, 22 arabinose, 23 starch, 24 and chitin 25 and lignin 26 present in biomass). 27 In view of the previous reports, 28 the physicochemical characterization (including electrical conductivity, water activity, soluble solids, dynamic viscosity, and density) of several DESs used for the extraction of polysaccharides were tested.…”

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confidence: 99%

Green and Efficient Extraction of Polysaccharides From Poria cocos F.A. Wolf by Deep Eutectic Solvent

Zhang

Cheng

Zhai

et al. 2020

Natural Product Communications

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Deep eutectic solvents (DESs) were proposed for the extraction of polysaccharides from Poria cocos (PCPs). Six types of DESs were prepared, and the DES composed of choline chloride and oxalic acid was proved to be suitable. Based on the results of single-factor test, the Box-Behnken experimental design with response surface methodology was carried out, giving the optimal extraction conditions including mole ratio of 1:2 (choline chloride:oxalic acid) and extraction 15 minutes at 100°C. Under the optimal extraction conditions, the extraction yield (46.24% ± 0.13%) was 8.6 times higher than that of hot water. The reusability of DES was demonstrated by a 6-run test, and an extraction yield of PCP was 38.40% ± 0.23% after reusing for 6 times without adding any additional chemicals. Moreover, molecular weight distributions of the resulting PCP were analyzed, and then mainly distributed in the range of 753 to 3578 g/mol. Therefore, DESs were proved to be an excellent extraction solvent alternative to the extraction of PCP.

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“…The addition of water can improve the viscosity of DES, thereby increasing the mass transfer process, resulting in better penetration of DES into fructose molecules. New et al [39] found that adding water to DES helps to increase the recovery rate of hemicellulose and xylose, while improving the mass transfer. However, a study has revealed that adding excessive water to DES generates hydrogen bonding between water molecules and ChCl, thereby reducing the stability and strength of the hydrogen bond interaction between ChCl and the HBD, as a result the DES structure destroyed [40].…”

Section: Determination Of Ultrasonic Des Reaction Systemmentioning

confidence: 99%

Efficient and Environmental-Friendly Dehydration of Fructose to 5-HMF in Ultrasound Assisted Ionic Liquids / Deep Eutectic Solvents

Yagoub

et al. 2021

Preprint

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5-Hydroxymethylfurfural (5-HMF) is one of the most significant intermediate platforms for the production of both chemicals and liquid fuel derived from biomass. This study aimed to the assess the efficiency of ultrasound-assisted ionic liquids (ILs)/deep eutectic solvents (DES) in converting fructose to 5-HMF under milder conditions (≤ 100°C). The reaction conditions for the two-step transformation of sugarcane bagasse (SCB) with metal chloride as a catalyst and ultrasonic-assisted DES were optimized. The results showed that under the best conditions for ultrasound-assisted ILs to convert fructose (ultrasonic frequency: 40 kHz, 80°C, 1 h, [Bmim]Cl, D001-cc: 100 mg, fructose addition: 100 mg), the yield of 5-HMF reached 65.29 mol%. In addition, the D001-cc catalyst maintained high catalytic activity after being reused 6 times, and the activated D001-cc basically achieved the initial fructose conversion effect. Under the optimal conditions of ultrasonic-assisted DES fructose conversion (ultrasonic frequency: 40 kHz, 100°C, 30 min, ChCl-OA (molar ratio: 1:2), water addition: 0.46 mL, DES addition: 1 g), the yield of 5-HMF reached 51.87 mol%. Under the best conditions of ultrasonic-assisted DES SCB conversion (ultrasonic frequency: 40 kHz, ultrasonic time: 1 h, DES: ChCl: OA, catalyst: SnCl4·5H2O, water addition: 0.46 mL, 130°C/4 h (150°C/0.5 h)), the yield of 5-HMF reached 47.43 mol%. The study initially showed that ultrasonic-assisted ILs/DES effectively converted fructose in one step. In addition, the synergy of DES and metal chloride can better convert lignocellulosic biomass. Simply stated, the ultrasound-assisted ILs/DES conversion of biomass has realized “physical driving chemistry”. Thus, paving the way of high-value utilization of lignocellulose to become greener and economical.

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Potential use of pure and diluted choline chloride-based deep eutectic solvent in delignification of oil palm fronds

Cited by 85 publications

References 51 publications

Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste

Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste

Green and Efficient Extraction of Polysaccharides From Poria cocos F.A. Wolf by Deep Eutectic Solvent

Efficient and Environmental-Friendly Dehydration of Fructose to 5-HMF in Ultrasound Assisted Ionic Liquids / Deep Eutectic Solvents

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