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Yang H, Chai M, Geun Yoo C, Yuan J, Meng X, Yao L. Role of lignin in synergistic digestibility improvement of wheat straw by novel alkaline deep eutectic solvent and tetrahydrofuran pretreatment. BIORESOURCE TECHNOLOGY 2024; 397:130460. [PMID: 38373505 DOI: 10.1016/j.biortech.2024.130460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/14/2024] [Accepted: 02/14/2024] [Indexed: 02/21/2024]
Abstract
A novel efficient pretreatment system containing alkaline deep eutectic solvent (DES) and tetrahydrofuran (THF) was developed in the present study. Under pretreatment conditions of 160 ℃ and 1 h, DES-THF pretreatment was more efficient (81.61%) in cellulose digestibility improvement than DES (choline chloride/monoethanolamine, 67.54%). To further explore lignin structural transformation and lignin-cellulase interaction after pretreatment, milled wood lignin (MWL) was extracted and characterized. Compared with DES-MWL, DES-THF-MWL showed an increased carboxyl group content (24.0%) and decreased condensed phenolic hydroxyl content (9.1%). In DES-MWL, β-O-4 content was 21.79%, while in DES-THF-MWL, β-O-4 accounted for 45.45%, indicating that the addition of THF alleviated cleavage of β-O-4 alkyl ether bonds. Fluorescence emission spectroscopy results showed that quenching mechanism of DES-THF-MWL and cellulase was dynamic, which was different from other lignin. Compared with DES-MWL, decreased Ka between DES-THF-MWL and cellulase indicated decreasing interaction between them. DES-THF pretreatment provides a novel pretreatment method for bioenergy.
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Affiliation(s)
- Haitao Yang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, PR China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, PR China
| | - Mengzhen Chai
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, PR China
| | - Chang Geun Yoo
- Department of Chemical Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Jie Yuan
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, PR China
| | - Xianzhi Meng
- Department of Chemical and Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996-2200, USA
| | - Lan Yao
- Key Laboratory of Fermentation Engineering (Ministry of Education), Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), College of Bioengineering, Hubei University of Technology, Wuhan 430068, PR China.
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2
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Sun SC, Sun SF, Xu Y, Wen JL, Yuan TQ. Green and sustainable production of high-purity lignin microparticles with well-preserved substructure and enhanced anti-UV/oxidant activity using peroxide-promoted alkaline deep eutectic solvent. Int J Biol Macromol 2023; 253:127057. [PMID: 37751817 DOI: 10.1016/j.ijbiomac.2023.127057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/26/2023] [Accepted: 09/17/2023] [Indexed: 09/28/2023]
Abstract
Deep eutectic solvents (DESs) have emerged as promising and eco-friendly solvents for the efficient extraction of lignin from biomass due to their low cost and environmental benefits. Nevertheless, the prevalent use of acidic DESs in lignin extraction often results in excessive depolymerization and recondensation of lignin, thereby impeding its downstream applications. In this study, we developed a range of alkaline DESs (ADESs), both pure and peroxide-containing, for the extraction of high-quality lignin from bamboo. Moreover, carbon dioxide (CO2) was employed for the precipitation and regeneration of the extracted lignin. The obtained lignin fractions were comprehensively characterized in terms of yield, purity, morphology, solubility, structural features, and anti-UV/oxidant activity. The results showed that the monoethanolamine-based ADES demonstrated superior performance among the pure ADESs. Structural analysis confirmed the well-preserved substructures of lignin fractions obtained using ADESs, with β-O-4 bond retention ranging from 49.8 % to 68.4 %. The incorporation of a suitable amount of peroxide improved lignin yield, morphology, solubility, and anti-UV/oxidant activity. Additionally, the anti-UV/oxidant activity of lignin exhibited a positive correlation with its phenolic hydroxyl content. This study provides a valuable reference for the green and sustainable production and valorization of lignin within the existing biorefinery framework.
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Affiliation(s)
- Shao-Chao Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Shao-Fei Sun
- Liaoning Key Laboratory of Lignocellulose Chemistry and Biomaterials, Dalian Polytechnic University, Dalian 116034, China
| | - Ying Xu
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Jia-Long Wen
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
| | - Tong-Qi Yuan
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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3
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Pan N, Jiang B, Hu J, Huang M, He J, Jiang Q, Zhao L, Shen F, Tian D. The coupling effects between acid-catalyzed hydrothermal pretreatment and acidic/alkaline deep eutectic solvent extraction for wheat straw fractionation. BIORESOURCE TECHNOLOGY 2023; 386:129579. [PMID: 37506939 DOI: 10.1016/j.biortech.2023.129579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Mild hydrothermal pretreatment (HP) integrating with solvent extraction is a promising two-step technique to enhance the overall lignin and carbohydrate output for lignocellulose fractionation. This work comparatively assessed the coupling effect between mild HP (the first step) and the emerging acidic choline chloride-natural acid or alkaline choline hydroxide based deep eutectic solvents (DES, the second step) for wheat straw fractionation. It was shown HP with 0.3% p-toluenesulfonic acid (p-TsOH) catalyst achieved a good compromise between complete hemicellulose removal (nearly 100%) and high cellulose recovery (99.2%). While choline hydroxide based DES showed better coupling effect with HP than choline chloride-natural acid DES, corresponding to 75.6 and 31.2% lignin removal respectively. It was proposed that the alkaline DES enhanced lignocellulose swelling the lignin phenolic hydroxyl groups deprotonation and thus facilitating lignin solubilization despite of its condensation at HP. Therefore, the alkaline DES resulting cellulose-rich fraction exhibited higher potential for further processing.
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Affiliation(s)
- Na Pan
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Baiheng Jiang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - Mei Huang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Jinsong He
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Qin Jiang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Li Zhao
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Fei Shen
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Dong Tian
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.
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4
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Li Y, Sun LL, Cao DM, Cao XF, Sun SN. One-step conversion of corn stalk to glucose and furfural in molten salt hydrate/organic solvent biphasic system. BIORESOURCE TECHNOLOGY 2023; 386:129520. [PMID: 37468006 DOI: 10.1016/j.biortech.2023.129520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/15/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023]
Abstract
An effective approach for glucose and furfural production by converting cellulose and hemicelluloses from corn stalk in a biphasic system of molten salt hydrate (MSH) and organic solvent using H2SO4 as catalyst was reported. Results showed that the system with LiBr·3H2O and dichloromethane (DCM) had excellent performance in cellulose and hemicelluloses conversion. Under the optimal reaction conditions (corn stalk:LiBr·3H2O:DCM ratio = 0.35:10:20 g/mL/mL, 0.05 mol/L H2SO4, 120 °C, 90 min), 58.9% glucose and 72.5% furfural were yielded. Meanwhile, lignin was obviously depolymerized by the cleavage of β-O-4' linkages and fractionated with high purity and low molecular weight for potential coproducts. Fluorescence microscopy and confocal Raman microscope displayed that the LiBr·3H2O/DCM treatment caused decreasing intensities in carbohydrate and lignin, suggesting the degradation of the main components of biomass. This research provided a promising biorefinery technology for the comprehensive utilization of corn stalk.
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Affiliation(s)
- Yu Li
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Li-Li Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - De-Ming Cao
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Xue-Fei Cao
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China; MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Shao-Ni Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China; MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.
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5
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Santana MB, Soares LB, Zanella E, Fellipe da Silva M, Stambuk BU, Goldbeck R, Ambrosi A, Zielinski A, Poletto P, Ienczak JL. Hydrothermal pretreatment for the production of prebiotic oligosaccharides from tobacco stem. BIORESOURCE TECHNOLOGY 2023; 382:129169. [PMID: 37187330 DOI: 10.1016/j.biortech.2023.129169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/07/2023] [Accepted: 05/10/2023] [Indexed: 05/17/2023]
Abstract
Tobacco stem is an abundant and inexpensive renewable source to produce prebiotics by circular economy. In this study, hydrothermal pretreatments were evaluated on the release of xylooligosaccharides (XOS) and cello-oligosaccharides (COS) from the tobacco stem by a central composite rotational design associated with response surface methodology to evaluate the effects of temperature (161.72 to 218.3 °C) and solid load (SL) (2.93 to 17.07%). XOS were the main compounds released to the liquor. Desirability function was performed to maximize the production of XOS and minimize the effects of release of monosaccharides and degradation compounds. The result indicated yield of 96% w[XOS]/w[xylan] for 190 °C-2.93% SL. The highest value for COS and total oligomers content (COS + XOS) was 6.42 g/L and 17.7 g/L, respectively, for 190 °C-17.07% SL. The mass balance for the best yield XOS condition predicted 132 kg of XOS (X2-X6) from 1000 kg of tobacco stem.
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Affiliation(s)
- Marcel B Santana
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Lauren B Soares
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Eduardo Zanella
- Center of Biological Sciences, Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Marcos Fellipe da Silva
- Bioprocess and Metabolic Engineering Laboratory, School of Food Engineering, Department of Food Engineering and Technology, University of Campinas, Campinas, Brazil
| | - Boris U Stambuk
- Center of Biological Sciences, Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Rosana Goldbeck
- Bioprocess and Metabolic Engineering Laboratory, School of Food Engineering, Department of Food Engineering and Technology, University of Campinas, Campinas, Brazil
| | - Alan Ambrosi
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Acácio Zielinski
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Patrícia Poletto
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil.
| | - Jaciane L Ienczak
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
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6
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Yang F, Jin C, Wang S, Wang Y, Wei L, Zheng L, Gu H, Lam SS, Naushad M, Li C, Sonne C. Bamboo-based magnetic activated carbon for efficient removal of sulfadiazine: Application and adsorption mechanism. CHEMOSPHERE 2023; 323:138245. [PMID: 36841450 DOI: 10.1016/j.chemosphere.2023.138245] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Due to increasing antibiotic pollution in the water environment, green and efficient adsorbents are urgently needed to solve this problem. Here we prepare magnetic bamboo-based activated carbon (MDBAC) through delignification and carbonization using ZnCl2 as activator, resulting in production of an activated carbon with large specific surface area (1388.83 m2 g-1). The influencing factors, such as solution pH, initial sulfadiazine (SD) concentration, temperature, and contact time, were assessed in batch adsorption experiments. The Langmuir isotherm model demonstrated that MDBAC adsorption capacity on SD was 645.08 mg g-1 at its maximum, being higher than majority of previously reported adsorbents. In SD adsorption, the kinetic adsorption process closely followed the pseudo-second kinetic model, and the thermodynamic adsorption process was discovered to be exothermic and spontaneous in nature. The MDBAC exhibited excellent physicochemical stability, facile magnetic recovery and acceptable recyclability properties. Moreover, the synergistic interactions between MDBAC and SD mainly involved electrostatic forces, hydrogen bonding, π-π stacking, and chelation. Within the benefits of low cost, ease of production and excellent adsorption performance, the MDBAC biosorbent shows promising utilization in removing antibiotic contaminants from wastewater.
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Affiliation(s)
- Fan Yang
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Can Jin
- Institute of Chemical Industry of Forest Products, CAF; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, China
| | - Sen Wang
- College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yujie Wang
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Lu Wei
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Longhui Zheng
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Haiping Gu
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Center for Transdisciplinary Research, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Mu Naushad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Cheng Li
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Christian Sonne
- Department of Ecoscience, Aarhus University, Frederiksborgvej 399, DK-4000, Roskilde, Denmark.
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7
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Zhou M, Fakayode OA, Ren M, Li H, Liang J, Zhou C. Green and sustainable extraction of lignin by deep eutectic solvent, its antioxidant activity, and applications in the food industry. Crit Rev Food Sci Nutr 2023; 64:7201-7219. [PMID: 36815260 DOI: 10.1080/10408398.2023.2181762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Lignin, an amorphous biomacromolecule abundantly distributed in the plant kingdom, has gained considerable attention due to its intrinsic bioactivities and renewable nature. Owing to its polyphenolic structure, lignin has a variety of human health activities, including antioxidant, antimicrobial, antidiabetic, antitumor, and other activities. The extraction of lignin from various sources in a green and sustainable manner is critical in the food industry. Deep eutectic solvent (DES) has recently been recognized as a class of safe and environmentally friendly media capable of efficiently extracting lignin. This article comprehensively reviews the recent advances in lignin extraction using DES, discusses the influential factors on the antioxidant activity of lignin, interprets the relationship between antioxidant activity and lignin structure, and overviews the applications of lignin in the food industry. We aim to highlight the advantages of DES in lignin extraction and valorization from the nutrition and food views.
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Affiliation(s)
- Man Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
| | - Olugbenga Abiola Fakayode
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
- Department of Agricultural and Food Engineering, University of Uyo, Uyo, Akwa Ibom State, Nigeria
| | - Manni Ren
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
| | - Haoxin Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
| | - Jiakang Liang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
| | - Cunshan Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
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8
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Duan C, Tian C, Feng X, Tian G, Liu X, Ni Y. Ultrafast process of microwave-assisted deep eutectic solvent to improve properties of bamboo dissolving pulp. BIORESOURCE TECHNOLOGY 2023; 370:128543. [PMID: 36581230 DOI: 10.1016/j.biortech.2022.128543] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 06/17/2023]
Abstract
Viscosity control and reactivity enhancement are critical to produce high-quality cellulose products, such as dissolving pulp, yet remain challenging. In this work, an ultrafast process, namely microwave-assisted deep eutectic solvent (MW-DES), is proposed for this purpose. It is based on the hypothesis that the MW-DES process can deliver an enhanced synergy: a simultaneous fiber swelling and cellulose depolymerization via hydrogen-bonding break-up and acid hydrolysis from the actions of polar and acidic DES further boosted under MW irradiation. Results showed that after the MW-DES (Choline chloride- oxalic acid, ChCl-OA) treatment for only 40 s, the pulp viscosity decreased from 715 to 453 mL/g, and the reactivity increased from 43.0 % to 84.6 %, which is ultrafast in comparison with those reported work. Furthermore, DES in the process shows a high reusability and chemical stability, thus offering a simple, sustainable and effective alternative for upgrading of dissolving pulp, particularly, using non-wood materials of bamboo.
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Affiliation(s)
- Chao Duan
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China; Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.
| | - Chaochao Tian
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xiaomeng Feng
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Guodong Tian
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xiaoshuang Liu
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yonghao Ni
- Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada; Department of Chemical and Biomedical Engineering, University of Maine, Orono, ME 04469, USA
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9
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Ullah A, Zhang Y, Liu C, Qiao Q, Shao Q, Shi J. Process intensification strategies for green solvent mediated biomass pretreatment. BIORESOURCE TECHNOLOGY 2023; 369:128394. [PMID: 36442603 DOI: 10.1016/j.biortech.2022.128394] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 06/16/2023]
Abstract
Demonstrated to be highly effective for lignocellulosic biomass pretreatment, deep eutectic solvent (DES) has attracted increasing attention owing to its advantages of simple synthesis, relatively low chemical cost, and better biocompatibility as compared to certain ionic liquids. Here we provide a critical review of the status of the design/selection of DES for the pretreatment of biomass feedstocks with an emphasis on the process intensification strategies: 1) integration of microwave, ultrasound, and high solid extrusion for pretreating biomass, 2) one-pot DES pretreatment, enzymatic hydrolysis, and fermentation, 3) strategies for DES recycling and product recovery; and 4) recent progress on molecular simulations toward understanding the interactions between DES and biomass compounds such as lignin and cellulose. Lastly, we provide perspectives toward cost-effective, continuous, high-solid, environmental-benign, and industrial-relevant applications and point to future research directions to address the challenges associated with DES pretreatment.
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Affiliation(s)
- Ahamed Ullah
- Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, Kentucky 40546, USA
| | - Yuxuan Zhang
- Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, Kentucky 40546, USA
| | - Can Liu
- Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, Kentucky 40546, USA
| | - Qi Qiao
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, USA
| | - Qing Shao
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, USA
| | - Jian Shi
- Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, Kentucky 40546, USA.
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Chemical hydrolysis of hemicellulose from sugarcane bagasse. A comparison between the classical sulfuric acid method with the acidic ionic liquid 1-ethyl-3-methylimidazolium hydrogen sulfate. ACTA INNOVATIONS 2022. [DOI: 10.32933/actainnovations.46.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
Dilute sulfuric acid and acidic ionic liquids are pretreatment methods used to selectively hydrolyze hemicellulose from lignocellulosic biomasses. In this work, a comparison between these techniques is carried out by treating sugarcane bagasse both with 1-ethyl-3-methylimidazolium hydrogen sulfate at different ionic-liquid and water contents and with H 2 SO 4 at the same conditions and equivalent ionic liquid molar contents. Results from the use of ionic liquid showed that it was possible to tune the biomass treatment either to achieve high hemicellulose hydrolysis yields of 72.5 mol% to very low furan and glucose co-production, or to obtain furfural at moderate yields of 18.7 mol% under conditions of low water concentration. In comparison to the use of ionic liquid, sulfuric acid pretreatment increased hemicellulose hydrolysis yields by 17%, but the 8.6 mol% furfural yield was also higher, and these yields were obtained at high water concentration conditions. Besides, no such tuning ability of the biomass treatment conditions can be made.
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11
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Sharma V, Tsai ML, Chen CW, Sun PP, Patel AK, Singhania RR, Nargotra P, Dong CD. Deep eutectic solvents as promising pretreatment agents for sustainable lignocellulosic biorefineries: A review. BIORESOURCE TECHNOLOGY 2022; 360:127631. [PMID: 35850394 DOI: 10.1016/j.biortech.2022.127631] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/10/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Increasing reliance on non-renewable fuels has shifted research attention to environmentally friendly and sustainable energy sources.The inherently recalcitrant nature of lignocellulosic biomass (LCB) makes downstream processing of the bioprocess challenging. Deep eutectic solvents (DESs) are popular and inexpensive green liquids found effective for LCB valorisation. DESs have negligible vapor-pressure and are non-flammable, recyclable, cost-economic, and thermochemically stable. This review provides a detailed overview on the DESs types, properties and their role in effective delignification and enzymatic digestibility of polysaccharides for cost-effective conversion of LCB into biofuels and bioproducts. The conglomeration of DESs with assistive pretreatment techniques can augment the process of biomass deconstruction. The current challenges in upscaling the DESs-based pretreatment technology up to commercial scale is summarized, with possible solutions and future directions. These insights would fill the knowledge-gaps to towards development of lignocellulosic biorefineries and to address the global energy crisis and environment issues.
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Affiliation(s)
- Vishal Sharma
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Mei-Ling Tsai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Pei-Pei Sun
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Anil Kumar Patel
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, India
| | - Reeta Rani Singhania
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, India
| | | | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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12
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Meng F, Yang H, Shi Z, Zhao P, Yang J. Alkaline deacetylation-aided hydrogen peroxide-acetic acid pretreatment of bamboo residue to improve enzymatic saccharification and bioethanol production. BIORESOURCE TECHNOLOGY 2022; 358:127321. [PMID: 35609748 DOI: 10.1016/j.biortech.2022.127321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Bamboo pretreatment with alkaline deacetylation-aided hydrogen peroxide-acetic acid (HPAC-NaOH) was investigated for producing high-value-added products. Comparing with HPAC pretreated D. sinicus, the post-treatment of alkaline deacetylation resulted in higher glucose yield of 91.3% and ethanol concentrations of 17.20 g/L, increased by about 20-27%. A strong negative correlation between the content of acetyl with cellulose accessibility and enzymatic hydrolysis yield was showed. The deacetylation of HPAC-DS contributed to the increase of cellulase adsorption capacities in substrates and the variations of hydrophilicity, cellulose crystallinity, and degree of polymerization, which can generate highly reactive cellulosic materials for enzymatic saccharification to produce bioethanol. The HPAC-NaOH pretreatment can provide a promising approach to improve the bioconversion of bamboo to biofuels, and has broad space for the biorefinery of bamboo in the south of China.
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Affiliation(s)
- Fanyang Meng
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Haiyan Yang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Zhengjun Shi
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Ping Zhao
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Jing Yang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China.
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