1
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Li Q, Peng W, Sun Y, Cai C, Tang F, Liu Y, Hu Q, Zhou Z, Li X, Nie S. A super-hydrophilic graphite directly from lignin enabled by a room-temperature cascade catalytic carbonization. BIORESOURCE TECHNOLOGY 2024; 402:130802. [PMID: 38718902 DOI: 10.1016/j.biortech.2024.130802] [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: 03/21/2024] [Revised: 04/26/2024] [Accepted: 05/05/2024] [Indexed: 05/27/2024]
Abstract
A cost-effective, and low-energy room-temperature cascade catalytic carbonization strategy is demonstrated for converting lignin into graphite with a high yield of 87 %, a high surface potential of -37 eV and super-hydrophilicity. This super-hydrophilic feature endows the lignin-derived graphite to be dispersed in a variety of polar solvents, which is important for its future applications. Encapsulating of liquid metals with the graphite for electrical circuit patterning on flexible substrates is also advocated. These written patterns show superb conductivity of 4.9 × 106 S/m, offering good performance stability and reliability while being repeatedly stretched, folded, twisted, and bent. This will offer new designs for flexible electronic devices, sensors, and biomedical devices.
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Affiliation(s)
- Qiuxian Li
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Wenxuan Peng
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Yue Sun
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Chenchen Cai
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Fangyuan Tang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Yongfei Liu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Qingdi Hu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Zheng Zhou
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Xusheng Li
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China.
| | - Shuangxi Nie
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
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2
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Meng X, Zhou J, Jin X, Xia C, Ma S, Hong S, Aladejana JT, Dong A, Luo Y, Li J, Zhan X, Yang R. High-Strength, High-Swelling-Resistant, High-Sensitivity Hydrogel Sensor Prepared with Wood That Retains Lignin. Biomacromolecules 2024; 25:1696-1708. [PMID: 38381837 DOI: 10.1021/acs.biomac.3c01228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Wood-derived hydrogels possess satisfactory longitudinal strength but lack excellent swelling resistance and dry shrinkage resistance when achieving high anisotropy. In this study, we displayed the preparation of highly dimensional stable wood/polyacrylamide hydrogels (wood/PAM-Al3+). The alkali-treated wood retains lignin as the skeleton of the hydrogel. Second, Al ions were added to the metal coordination with lignin. Finally, by employing free radical polymerization, we construct a conductive electronic network using polyaniline within the wood/PAM-Al3+ matrix to create the flexible sensor. This approach leverages lignin's integrated structure within the middle lamella to provide enhanced swelling resistance and stronger binding strength in the transverse direction. Furthermore, coordination between lignin and Al ions improves the mechanical strength of the wood hydrogel. Polyaniline provides stable linear pressure and temperature responses. The wood/PAM-Al3+ exhibits a transverse swelling ratio of 3.90% while achieving a longitudinal tensile strength of 20.5 MPa. This high-strength and high-stability sensor is capable of monitoring macroscale human behavior. Therefore, this study presents a simple yet innovative strategy for constructing tough hydrogels while also establishing an alternative pathway for exploring lignin networks in new functional materials development.
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Affiliation(s)
- Xiangzhen Meng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jing Zhou
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Xin Jin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
- China Jiangsu Key Open Laboratory of Wood Processing and Wood-Based Panel Technology, Nanjing, Jiangsu 210037, China
| | - Shanyu Ma
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Shu Hong
- Hollingsworth & Vose (Suzhou) Co., Ltd., Suzhou Industrial Park, Suzhou 215126, China
| | - John Tosin Aladejana
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Anran Dong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Yujia Luo
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jianzhang Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Xianxu Zhan
- Dehua Tubaobao New Decoration Material Co., Ltd., Huzhou 313200, China
| | - Rui Yang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
- China Jiangsu Key Open Laboratory of Wood Processing and Wood-Based Panel Technology, Nanjing, Jiangsu 210037, China
- Dehua Tubaobao New Decoration Material Co., Ltd., Huzhou 313200, China
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3
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Zhu L, Tang W, Ma C, He YC. Efficient co-production of reducing sugars and xylooligosaccharides via clean hydrothermal pretreatment of rape straw. BIORESOURCE TECHNOLOGY 2023; 388:129727. [PMID: 37683707 DOI: 10.1016/j.biortech.2023.129727] [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: 07/02/2023] [Revised: 08/19/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
Hydrothermal treatment was applied to pretreat rape straw for the efficient co-production of reducing sugars and xylooligosaccharides. It was observed that hydrothermal treatment using water as solvent and catalyst destructed the compact structure of rape straw and increased its enzymatic digestion efficiency from 24.6% to 92.0%. Xylooligosaccharide (3.3 g/L) was acquired after the treatment under 200 °C for 60 min (severity factor Log Ro = 4.7). With increasing pretreatment intensity from 3.1 to 5.4, the hemicellulose removal increased from 14.4% to 100%, and the delignification was raised from 12% to 44%. Various characterization proved that the surface morphology of treated material showed a porous shape, while the cellulose accessibility, lignin surface area and lignin hydrophobicity were greatly improved. Consequently, hydrothermal pretreatment played a vital role in the sustainable transformation of biomass to valuable biobased compounds, and had a wide range of application prospects in lignocellulosic biorefining.
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Affiliation(s)
- Lili Zhu
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou, China
| | - Wei Tang
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou, China
| | - Cuiluan Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China
| | - Yu-Cai He
- School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou, China; State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China.
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4
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Fang S, Xia Q, Zhang L, Zhan P, Qing Y, Wu Z, Wang H, Shao L, Liu N, He J, Liu J. Differentiated Fractionation of Various Biomass Resources by p-Toluenesulfonic Acid at Mild Conditions. ACS OMEGA 2023; 8:24247-24255. [PMID: 37457452 PMCID: PMC10339397 DOI: 10.1021/acsomega.3c00927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023]
Abstract
Biomass is the ideal substitute for petrochemical resources because of its renewable and abundant sources. p-Toluenesulfonic acid (p-TsOH) can effectively separate lignin from biomass under mild conditions, so it is highly expected in biomass fractionation to improve the utilization efficiency. In this study, we investigated the effect of p-TsOH differentiated fractionation of poplar sawdust, eucalyptus sawdust, and rice straw below 100 °C. According to the experimental results, upon pretreatment by p-TsOH of the three kinds of raw biomass, most of the lignin and hemicellulose of poplar sawdust and eucalyptus sawdust were removed, whereas the cellulose was retained, but most of the hemicellulose and cellulose of rice straw were kept, whereas the lignin was removed at similar conditions. The structures and compositions of pretreatment residues, lignin, and hemicellulose extracted from raw biomass were characterized by XRD, FTIR, HSQC-NMR, XPS, and SEM. The differentiated fractionation mechanism of biomass was analyzed. A better recognition and understanding of the factors affecting biomatrix opening and fractionation will allow for the identification of new pretreatment strategies that improve biomass utilization and permit the rational enzymatic hydrolysis of cellulose.
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Affiliation(s)
- Shaohua Fang
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qiuli Xia
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lin Zhang
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Peng Zhan
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yan Qing
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Zhiping Wu
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Hui Wang
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lishu Shao
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Na Liu
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jiaying He
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jin Liu
- College
of Materials Science and Engineering, Central
South University of Forestry and Technology, Changsha 410004, China
- Ministry
of Forestry Bioethanol Research Center, Central South University of Forestry and Technology, Changsha 410004, China
- Hunan
International Joint Laboratory of Woody Biomass Conversion, Central South University of Forestry and Technology, Changsha 410004, China
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5
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Rabelo SC, Nakasu PYS, Scopel E, Araújo MF, Cardoso LH, Costa ACD. Organosolv pretreatment for biorefineries: Current status, perspectives, and challenges. BIORESOURCE TECHNOLOGY 2023; 369:128331. [PMID: 36403910 DOI: 10.1016/j.biortech.2022.128331] [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: 09/27/2022] [Revised: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Biorefineries integrate processes for the sustainable conversion of biomass into chemicals, materials, and bioenergy so that resources are optimized and effluents are minimized. Despite the vast potential of lignocellulosic biorefineries, their success depends heavily on effective, economically viable, and sustainable biomass fractionation. Although efficient, organosolv pretreatment still faces challenges that must be overcome for its widespread utilization, mainly related to solvent type and recycling, robustness regarding biomass type and integration of hemicellulose recovery and use. This review shows the recent advances and state-of-the-art of organosolv pretreatment, discussing the advances, such as the use of biobased solvents, whilst also shedding light on the perspectives of using the streams - cellulose, hemicellulose, and lignin - to produce biofuels and products of high added value. In addition, it presents an overview of the existing industrial implementations of organosolv processes and, lastly, shows the main scientific and industrial challenges and opportunities for this process.
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Affiliation(s)
- Sarita Cândida Rabelo
- School of Agriculture, São Paulo State University (Unesp), Botucatu Campus, Botucatu, São Paulo, Brazil.
| | | | - Eupídio Scopel
- Institute of Chemistry, State University of Campinas (Unicamp), Campinas, São Paulo, Brazil
| | | | - Luiz Henrique Cardoso
- School of Agriculture, São Paulo State University (Unesp), Botucatu Campus, Botucatu, São Paulo, Brazil; Institute of Biosciences, São Paulo State University (Unesp), Botucatu Campus, Botucatu, São Paulo, Brazil
| | - Aline Carvalho da Costa
- Chemical Engineering School in State University of Campinas (Unicamp), Campinas, São Paulo, Brazil
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6
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Fan J, Yu Q, Li M, Chen J, Wang Y, Zhang Y, Li G, Ma X, Zhong H, Yu Y. Optimization of ethanol-extracted lignin from palm fiber by response surface methodology and preparation of activated carbon fiber for dehumidification. BIORESOUR BIOPROCESS 2022; 9:61. [PMID: 38647770 PMCID: PMC10992789 DOI: 10.1186/s40643-022-00549-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 05/12/2022] [Indexed: 11/10/2022] Open
Abstract
Lignin is a renewable bioresource that can be used for a variety of value-added applications. However, the effective separation of lignin from lignocellulosic biomass remains an ongoing challenge. In this study, lignin was extracted from waste palm fiber and successfully converted into a dehumidifying material. The following four process parameters of lignin extraction from palm fiber were optimized systematically and comprehensively using the response surface methodology: reaction time, extraction temperature, ethanol concentration and solid/liquid ratio. The results revealed that under the optimum processing conditions (111 min of extraction at 174 °C using 73% ethanol at 1/16 g/mL solid/liquid ratio), the extraction yield of lignin was 56.2%. The recovery of ethanol solvent was as high as 91.8%. Further, the lignin could be directly used without purification to produce lignin-based activated carbon fibers (LACFs) with specific surface area and total pore volume of 1375 m2/g and 0.881 cm3/g, respectively. Compared with the commercial pitch-based activated carbon fiber, the LACF has a higher specific area and superior pore structure parameters. This work provides a feasible route for extracting lignin from natural palm fiber and demonstrates its use in the preparation of activated carbon fiber with a remarkable performance as a solid dehumidification agent.
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Affiliation(s)
- Jie Fan
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Qiongfen Yu
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China.
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China.
| | - Ming Li
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Jie Chen
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Yunfeng Wang
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Ying Zhang
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Guoliang Li
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Xun Ma
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Hao Zhong
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
| | - Yamei Yu
- Solar Energy Research Institute, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory of Solar Heating and Cooling Technology of Yunnan Provincial Universities, Kunming, 650500, China
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7
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Shao H, Zhang Y, Pan H, Jiang Y, Qi J, Xiao H, Zhang S, Lin T, Tu L, Xie J. Preparation of flexible and UV-blocking films from lignin-containing cellulose incorporated with tea polyphenol/citric acid. Int J Biol Macromol 2022; 207:917-926. [PMID: 35364193 DOI: 10.1016/j.ijbiomac.2022.03.183] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 03/16/2022] [Accepted: 03/26/2022] [Indexed: 12/14/2022]
Abstract
Lignin-containing bamboo cellulose, fractionated from a pilot-scale microwave liquefaction of bamboo was dissolved in tetrabutylammonium acetate/dimethyl sulfoxide (TBAA/DMSO) for the fabrication of highly flexible, transparent and UV-blocking films. Tea polyphenol (TP) or citric acid (CA) was added during the dissolving process in order to modify the film's properties. The results showed that the addition of TP obviously improved the elongation at break (triple that of the control) and UV-blocking ability of the films. Both the addition of TP and CA could increase the water contact angle of the films. The films incorporated with TP and CA were much more thermal stable than previously reported similar films. The proposed film fabrication mechanism revealed that stable hydrogen bonds formed between the lignin-cellulose matrix and TP/CA, resulting in the enhancement on the properties of the films. This present study showed that lignin-containing cellulose with the incorporation of TP/CA had great potential in the preparation of films in place of plastic.
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Affiliation(s)
- Huijuan Shao
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yongjian Zhang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Hui Pan
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Yongze Jiang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Jinqiu Qi
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Hui Xiao
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Shaobo Zhang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Tiantian Lin
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Lihua Tu
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Jiulong Xie
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
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8
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The Fractionation of Corn Stalk Components by Hydrothermal Treatment Followed by Ultrasonic Ethanol Extraction. ENERGIES 2022. [DOI: 10.3390/en15072616] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The fractionation of components of lignocellulosic biomass is important to be able to take advantage of biomass resources. The hydrothermal–ethanol method has significant advantages for fraction separation. The first step of hydrothermal treatment can separate hemicellulose efficiently, but hydrothermal treatment affects the efficiency of ethanol treatment to delignify lignin. In this study, the efficiency of lignin removal was improved by an ultrasonic-assisted second-step ethanol treatment. The effects of ultrasonic time, ultrasonic temperature, and ultrasonic power on the ultrasonic ethanol treatment of hydrothermal straw were investigated. The separated lignin was characterized by solid product composition analysis, FT-IR, and XRD. The hydrolysate was characterized by GC-MS to investigate the advantage on the products obtained by ethanol treatment. The results showed that an appropriate sonication time (15 min) could improve the delignification efficiency. A proper sonication temperature (180 °C) can improve the lignin removal efficiency with a better retention of cellulose. However, a high sonication power 70% (840 W) favored the retention of cellulose and lignin removal.
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9
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Li J, Feng P, Xiu H, Zhang M, Li J, Du M, Zhang X, Kozliak E, Ji Y. Wheat straw components fractionation, with efficient delignification, by hydrothermal treatment followed by facilitated ethanol extraction. BIORESOURCE TECHNOLOGY 2020; 316:123882. [PMID: 32739576 DOI: 10.1016/j.biortech.2020.123882] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
Lignocellulosic biomass fractionaion into its three major components is critically important for efficient feedstock utilization. The hydrothermal-ethanol method has broad application as its first step, hydrothermal treatment, provides high hemicellulose separation efficiency. However, it severely inhibits the delignification on the subsequent ethanol extraction. In this study, the second step, ethanol extraction, was facilitated by the addition of 3% NaOH and 3% H2O2, resulting in a significant improvement of lignin separation (by 48.2%). SEM, AFM, XPS, and XRD were used to characterize the surface composition of the remaining solids (crude cellulose) while the structure of isolated lignin was characterized by FT-IR, CP/MAS 13C NMR, GPC and TGA. The lignin samples isolated with both facilitated and non-facilitated ethanol extraction were compared to elucidate the lignin removal mechanism. The results showed that lignin degradation and crosslinking/polymerization occur in parallel during both the hydrothermal treatment and ethanol extraction.
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Affiliation(s)
- Jinbao Li
- Shaanxi University of Science & Technology, National Demonstration Center for Experimental Light Chemistry Engineering Education, Xi'an 710021, China; Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Pan Feng
- Shaanxi University of Science & Technology, National Demonstration Center for Experimental Light Chemistry Engineering Education, Xi'an 710021, China
| | - Huijuan Xiu
- Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Meiyun Zhang
- Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi'an 710021, China.
| | - Jingyu Li
- Shaanxi University of Science & Technology, National Demonstration Center for Experimental Light Chemistry Engineering Education, Xi'an 710021, China
| | - Min Du
- Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Xuefei Zhang
- Department of Chemical Engineering, University of North Dakota, Grand Forks, ND 58202, USA
| | - Evguenii Kozliak
- Department of Chemistry, University of North Dakota, Grand Forks, ND 58202, USA
| | - Yun Ji
- Department of Chemical Engineering, University of North Dakota, Grand Forks, ND 58202, USA.
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10
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Zhong L, Xu M, Wang C, Shao L, Mao J, Jiang W, Ji X, Yang G, Chen J, Lyu G, Yoo CG, Xu F. Pretreatment of willow using the alkaline-catalyzed sulfolane/water solution for high-purity and antioxidative lignin production. Int J Biol Macromol 2020; 159:287-294. [DOI: 10.1016/j.ijbiomac.2020.05.074] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/07/2020] [Accepted: 05/11/2020] [Indexed: 12/17/2022]
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11
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Abstract
Hydrolysis of lignocellulosic biomass is a crucial step for the production of sugars and biobased platform chemicals. Pretreatment experiments in a semi-continuous plant with diluted sulphuric acid as catalyst were carried out to measure the time-dependent formation of sugars (glucose, xylose, mannose), furfurals, and organic acids (acetic, formic, and levulinic acid) at different hydrolysis temperatures (180, 200, 220 °C) of one representative of each basic type of lignocellulose: hardwood, softwood, and grass. The addition of the acid catalyst is followed by a sharp increase in the sugar concentration. Xylose and mannose were mainly formed in the initial stages of the process, while glucose was released slowly. Increasing the reaction temperature had a positive effect on the formation of furfurals and organic acids, especially on hydroxymehtylfurfural (HMF) and levulinic acid, regardless of biomass type. In addition, large amounts of formic acid were released during the hydrolysis of miscanthus grass. Structural changes in the solid residue show a complete hydrolysis of hemicellulose at 180 °C and of cellulose at 200 °C after around 120 min reaction time. The results obtained in this study can be used for the optimisation of the hydrolysis conditions and reactor design to maximise the yields of desired products, which might be sugars or furfurals.
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