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Qi L, Liu J, Peng J, Yang G, Li F, Xue Y, Chen J. The Dual Effect of Ionic Liquid Pretreatment on the Eucalyptus Kraft Pulp during Oxygen Delignification Process. Polymers (Basel) 2021; 13:polym13101600. [PMID: 34063495 PMCID: PMC8156748 DOI: 10.3390/polym13101600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 11/16/2022] Open
Abstract
Oxygen delignification presents high efficiency but causes damage to cellulose, therefore leading to an undesired loss in pulp strength. The effect of ionic liquid pretreatment of [BMIM][HSO4] and [TEA][HSO4] on oxygen delignification of the eucalyptus kraft pulp was investigated at 10% IL loading and 10% pulp consistency, after which composition analysis, pulp and fiber characterizations, and the mechanism of lignin degradation were carried out. A possible dual effect of enhancing delignification and protecting fibers from oxidation damage occurred simultaneously. The proposed [TEA][HSO4] pretreatment facilitated lignin removal in oxygen delignification and provided fibers with improved DP, fiber length and width, and curl index, resulting in the enhanced physical strength of pulp. Particularly, its folding endurance improved by 110%. An unusual brightness reduction was identified, followed by detailed characterization on the pulps and extracted lignin with FTIR, UV, XPS, and HSQC. It was proposed that [TEA][HSO4] catalyzed the cleavage of β-O-4 bonds in lignin during the oxygen delignification, with the formation of Hibbert’s ketones and quinonoid compounds. The decomposed lignin dissolved and migrated to the fiber surface, where they facilitated the access of the oxidation agent and protected the fiber framework from oxidation damage. Therefore, it was concluded that ionic liquid pretreatment has a dual effect on oxygen delignification.
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Xu L, Zhang SJ, Zhong C, Li BZ, Yuan YJ. Alkali-Based Pretreatment-Facilitated Lignin Valorization: A Review. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01456] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Li Xu
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, P. R. China
| | - Sen-Jia Zhang
- Key Laboratory of Industrial Fermentation Microbiology (Ministry of Education), Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Cheng Zhong
- Key Laboratory of Industrial Fermentation Microbiology (Ministry of Education), Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Bing-Zhi Li
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, P. R. China
| | - Ying-Jin Yuan
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, P. R. China
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Zhang H, Liu X, Fu S, Chen Y. Fabrication of Light-Colored Lignin Microspheres for Developing Natural Sunscreens with Favorable UV Absorbability and Staining Resistance. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02086] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hui Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Xinxin Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Shiyu Fu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Yuancai Chen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- College of Environment and Energy, South China University of Technology, Guangzhou, Guangdong 510006, China
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Hou Q, Ju M, Li W, Liu L, Chen Y, Yang Q. Pretreatment of Lignocellulosic Biomass with Ionic Liquids and Ionic Liquid-Based Solvent Systems. Molecules 2017; 22:molecules22030490. [PMID: 28335528 PMCID: PMC6155251 DOI: 10.3390/molecules22030490] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 11/16/2022] Open
Abstract
Pretreatment is very important for the efficient production of value-added products from lignocellulosic biomass. However, traditional pretreatment methods have several disadvantages, including low efficiency and high pollution. This article gives an overview on the applications of ionic liquids (ILs) and IL-based solvent systems in the pretreatment of lignocellulosic biomass. It is divided into three parts: the first deals with the dissolution of biomass in ILs and IL-based solvent systems; the second focuses on the fractionation of biomass using ILs and IL-based solvent systems as solvents; the third emphasizes the enzymatic saccharification of biomass after pretreatment with ILs and IL-based solvent systems.
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Affiliation(s)
- Qidong Hou
- College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
| | - Meiting Ju
- College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
| | - Weizun Li
- College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
| | - Le Liu
- College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
| | - Yu Chen
- College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
| | - Qian Yang
- College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
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Zhang Z, Yang R, Gao W, Yao X. Investigation of [Emim][OAc] as a mild pretreatment solvent for enhancing the sulfonation efficiency of alkali lignin. RSC Adv 2017. [DOI: 10.1039/c7ra03877a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Properties of the sulfonated AL and RL; pretreatment conditions: moisture content of lignin was 5%, 353.15 K, 120 min.
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Affiliation(s)
- Zhili Zhang
- State Key Laboratory of Pulp & Paper Engineering
- South China University of Technology
- Guangzhou 510640
- PR China
| | - Rendang Yang
- State Key Laboratory of Pulp & Paper Engineering
- South China University of Technology
- Guangzhou 510640
- PR China
| | - Wenhua Gao
- State Key Laboratory of Pulp & Paper Engineering
- South China University of Technology
- Guangzhou 510640
- PR China
| | - Xianping Yao
- Hangzhou Research Institute of Chemical Technology Co. Ltd
- Hangzhou 310000
- PR China
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Pang Z, Lyu W, Dong C, Li H, Yang G. High selective delignification using oxidative ionic liquid pretreatment at mild conditions for efficient enzymatic hydrolysis of lignocellulose. BIORESOURCE TECHNOLOGY 2016; 214:96-101. [PMID: 27128194 DOI: 10.1016/j.biortech.2016.04.095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 06/05/2023]
Abstract
Herein, the oxidative ionic liquid (IL) pretreatment for overcoming recalcitrance of lignocellulose with selective delignification was investigated, and the subsequent enzymatic hydrolysis was evaluated. IL pretreatment incorporating oxygen delignification could enhance lignin extraction with high selectivity at low carbohydrate loss. The dual-action of oxidative decomposition and dissolution by 1-butyl-3-methlimidazolium chloride (BmimCl) on biomass were synergistically acted, accounting for efficient recalcitrance removal. In addition, the mild oxidative IL treatment only slightly converted crystalline cellulose into amorphous structure, and the extensive extraction of the amorphous lignin and carbohydrate resulted to the expose of cellulose with high susceptibility. Correspondingly, the enzymatic hydrolysis of the pretreated lignocellulose was greatly enhanced. The oxidative IL treatment at mild conditions, collaborating BmimCl treatment with oxygen delignification is a promising and effective system for overcoming the robust structure of lignocellulose.
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Affiliation(s)
- Zhiqiang Pang
- Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, China.
| | - Wenkang Lyu
- Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, China
| | - Cuihua Dong
- Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, China
| | - Hongxing Li
- Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, China
| | - Guihua Yang
- Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, China
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Mahesh S, Garg KK, Srivastava VC, Mishra IM, Prasad B, Mall ID. Continuous electrocoagulation treatment of pulp and paper mill wastewater: operating cost and sludge study. RSC Adv 2016. [DOI: 10.1039/c5ra27486a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Schematic view of continuous electrocoagulation set up.
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Affiliation(s)
- S. Mahesh
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
- Department of Environmental Engineering
| | - Krishan Kishor Garg
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | | | - Indra Mani Mishra
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
- Department of Chemical Engineering
| | - Basheshwar Prasad
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Indra Deo Mall
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
- Department of Chemical Engineering
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Liu Y, Zhang L, Li Y, Xu Y. The influence of chloride-based 1-butyl-3-methylimidazolium ionic liquid on the pulping process of wheat straw cooking. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.04.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Goodrich KM, Dorenkott MR, Ye L, O'Keefe SF, Hulver MW, Neilson AP. Dietary supplementation with cocoa flavanols does not alter colon tissue profiles of native flavanols and their microbial metabolites established during habitual dietary exposure in C57BL/6J mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11190-11199. [PMID: 25336378 DOI: 10.1021/jf503838q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Metabolism of flavanols (catechins, procyanidins) by gut microbiota has been extensively characterized. Comparatively little is known about accumulation of flavanols and their metabolites in the colon tissues, particularly during chronic exposure to low doses. Mice were fed low doses of cocoa flavanols for 12 weeks. Supplementation of the control diet with flavanols did not increase colonic tissue accumulation of flavanols nor microbial metabolites versus control. The type of cocoa flavanols did not affect colonic tissue accumulation of native flavanols or metabolites. Total phenolic content of the diets indicated that these results are not explained by background levels of undetected phenolics in the control diet. This is the longest known chronic flavanol feeding study to examine colonic tissue accumulation. Vast differences appear to exist between acute high doses and chronic low doses, to which gut microbiota and epithelium adapt. These results indicate that the fate of flavanols in the colon during chronic exposure is not fully understood.
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Affiliation(s)
- Katheryn M Goodrich
- Department of Food Science and Technology, ‡Department of Human Nutrition, Foods and Exercise, and #Metabolic Phenotyping Core Facility, Virginia Polytechnic Institute and State University , 1981 Kraft Drive, Blacksburg, Virginia 24060, United States
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