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Jiang X, Zhai R, Li H, Li C, Deng Q, Jin M. Understanding acid hydrolysis of corn stover during densification pretreatment for quantitative predictions of enzymatic hydrolysis efficiency using modified pretreatment severity factor. BIORESOURCE TECHNOLOGY 2023; 386:129487. [PMID: 37454958 DOI: 10.1016/j.biortech.2023.129487] [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: 06/16/2023] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
DLCA(sa) pretreatment (densifying lignocellulosic biomass with sulfuric acid followed by autoclave treatment), featured with low treatment temperature and densification, demonstrate high efficiency in biomass pretreatment. In this study, the effects of temperature, acid loading, time on the hydrolysis of xylan, cellulose and lignin during DLCA(sa) pretreatment were systematically investigated. It was shown that DLCA(sa) pretreatment can effectively solubilize xylan, achieving an 84% xylose recovery under mild conditions (130 °C, 30 min, and 0.125 g/g acid loading). The conventional pretreatment severity factor correlated and further modified to improve the accuracy in evaluating the xylan hydrolysis. Additionally, a mathematical model based on the xylan hydrolytic kinetics was proposed to predict the enzymatic hydrolysis. Kinetic model suggested that mechanical densification facilitates the penetration of acid into the biomass matrix, leading to increased accessibility of xylan to acid catalysis.
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Affiliation(s)
- Xiaoxiao Jiang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Rui Zhai
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Haixiang Li
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Chen Li
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Qiufeng Deng
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, China.
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2
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Zhong N, Chandra R, Yamamoto M, Leskinen T, Granström T, Saddler J. Sulphite addition during steam pretreatment enhanced both enzyme-mediated cellulose hydrolysis and ethanol production. BIORESOUR BIOPROCESS 2022; 9:71. [PMID: 38647560 PMCID: PMC10991184 DOI: 10.1186/s40643-022-00556-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 06/01/2022] [Indexed: 11/10/2022] Open
Abstract
Sulphite addition during steam pretreatment of softwoods under acidic, neutral and alkaline conditions was assessed to try to minimize lignin condensation. Although pretreatment under neutral/alkaline conditions resulted in effective lignin sulphonation, non-uniform size reduction was observed. In contrast, acidic sulphite steam treatment at 210 °C for 10 min resulted in homogenous particle size reduction and water-insoluble component that was 62% carbohydrate and 33% lignin. This carbohydrate-rich substrate was readily hydrolyzed and fermented which indicated the lack of fermentation inhibitors in the steam-pretreated whole slurry. The use of high solid loading (25% w/v) resulted in a hydrolysis yield of 58% at an enzyme loading of 40 mg protein/g glucan and efficient fermentation (46.6 g/L of ethanol). This indicated that the addition of acidic sulphite at the steam pretreatment of softwoods improved both the enzymatic hydrolysis and fermentation of steam-pretreated whole slurries.
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Affiliation(s)
- Na Zhong
- Department of Wood Science, Faculty of Forestry, Forest Products Biotechnology and Bioenergy Group, The University of British Columbia, 2424 Main Mall, Vancouver, BC, Canada
- St1 Oy, Firdonkatu 2, Helsinki, Finland
| | - Richard Chandra
- Trinity Western University, 22500 University Dr, Langley, BC, Canada.
| | | | | | - Tom Granström
- VTT Technical Research Centre of Finland Ltd., 02044, Espoo, Finland
| | - Jack Saddler
- Department of Wood Science, Faculty of Forestry, Forest Products Biotechnology and Bioenergy Group, The University of British Columbia, 2424 Main Mall, Vancouver, BC, Canada.
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4
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Zhu JY, Agarwal UP, Ciesielski PN, Himmel ME, Gao R, Deng Y, Morits M, Österberg M. Towards sustainable production and utilization of plant-biomass-based nanomaterials: a review and analysis of recent developments. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:114. [PMID: 33957955 PMCID: PMC8101122 DOI: 10.1186/s13068-021-01963-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 04/23/2021] [Indexed: 05/03/2023]
Abstract
Plant-biomass-based nanomaterials have attracted great interest recently for their potential to replace petroleum-sourced polymeric materials for sustained economic development. However, challenges associated with sustainable production of lignocellulosic nanoscale polymeric materials (NPMs) need to be addressed. Producing materials from lignocellulosic biomass is a value-added proposition compared with fuel-centric approach. This report focuses on recent progress made in understanding NPMs-specifically lignin nanoparticles (LNPs) and cellulosic nanomaterials (CNMs)-and their sustainable production. Special attention is focused on understanding key issues in nano-level deconstruction of cell walls and utilization of key properties of the resultant NPMs to allow flexibility in production to promote sustainability. Specifically, suitable processes for producing LNPs and their potential for scaled-up production, along with the resultant LNP properties and prospective applications, are discussed. In the case of CNMs, terminologies such as cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) used in the literature are examined. The term cellulose nano-whiskers (CNWs) is used here to describe a class of CNMs that has a morphology similar to CNCs but without specifying its crystallinity, because most applications of CNCs do not need its crystalline characteristic. Additionally, progress in enzymatic processing and drying of NPMs is also summarized. Finally, the report provides some perspective of future research that is likely to result in commercialization of plant-based NPMs.
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Affiliation(s)
- J Y Zhu
- USDA Forest Products Laboratory, One Gifford Pinchot Dr, Madison, WI, USA.
| | - Umesh P Agarwal
- USDA Forest Products Laboratory, One Gifford Pinchot Dr, Madison, WI, USA
| | | | | | - Runan Gao
- Renewable Bioproducts Institute, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- College of Materials Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Yulin Deng
- Renewable Bioproducts Institute, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Maria Morits
- Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
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5
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Liang Y, Duan W, An X, Qiao Y, Tian Y, Zhou H. Novel betaine-amino acid based natural deep eutectic solvents for enhancing the enzymatic hydrolysis of corncob. BIORESOURCE TECHNOLOGY 2020; 310:123389. [PMID: 32335347 DOI: 10.1016/j.biortech.2020.123389] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/13/2020] [Accepted: 04/13/2020] [Indexed: 05/14/2023]
Abstract
A novel natural deep eutectic solvent (NDES) with water content ranging from 65 to 93 wt%, in which betaine (Bet) acts as the cation and amino acids (AAs) as the anions, was prepared by a simple and green chemical route. [Bet][AA] NDES showed excellent xylan and lignin solubility, however, scare cellulose solubility. A mild and facile pretreatment process with [Bet][AA] NDES was carried out at 60 °C for 5 h. The enzymatic hydrolysis efficiency of cellulose and corncob was significantly improved. Detailed characterization showed that the enhancement of cellulose digestibility derived mainly from xylan and lignin removal. Xylan and lignin removal for [Bet][Lys]-W87 was 47.68 and 49.06%, while it was 42.20% and 57.01% for [Bet][Arg]-W82, respectively. FT-IR, SEM, XRD, and HSQC NMR studies confirmed the effectiveness and mechanism of [Bet][Lys]-W87 and [Bet][Arg]-W82 on biomass pretreatment.
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Affiliation(s)
- Yuan Liang
- Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemistry and Bioengineering, Shandong University of Science and Technology, Qingdao 277590, China
| | - Wenjing Duan
- Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemistry and Bioengineering, Shandong University of Science and Technology, Qingdao 277590, China
| | - Xiaoxi An
- Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemistry and Bioengineering, Shandong University of Science and Technology, Qingdao 277590, China
| | - Yingyun Qiao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China
| | - Yuanyu Tian
- Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemistry and Bioengineering, Shandong University of Science and Technology, Qingdao 277590, China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China
| | - Haifeng Zhou
- Key Laboratory of Low Carbon Energy and Chemical Engineering, College of Chemistry and Bioengineering, Shandong University of Science and Technology, Qingdao 277590, China.
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6
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Facile preparation of lignosulfonate/N-methylaniline composite and its application in efficient removal of Cr(VI) from aqueous solutions. Int J Biol Macromol 2020; 154:1194-1204. [DOI: 10.1016/j.ijbiomac.2019.10.274] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/21/2019] [Accepted: 10/30/2019] [Indexed: 11/22/2022]
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7
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Ying W, Xu G, Yang H, Shi Z, Yang J. The sequential Fenton oxidation and sulfomethylation pretreatment for alleviating the negative effects of lignin in enzymatic saccharification of sugarcane bagasse. BIORESOURCE TECHNOLOGY 2019; 286:121392. [PMID: 31075663 DOI: 10.1016/j.biortech.2019.121392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/25/2019] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
The sugarcane bagasse (SCB) was pretreated by the sequential Fenton oxidation and sulfomethylation pretreatment (FSP) for reducing the lignin inhibition in enzymatic saccharification. The FSP showed the delignification of 67.76% and the glucan retention in pretreated solid of 97.81%. Compared with sulfomethylation pretreated SCB (SP-SCB), the lignin surface coverage and surface hydrophobicity of FSP-SCB decreased by 1.84 and 4.84 times, respectively, led to enzymatic accessibility increased by 20%. Using the cellulase loading of 20 FPU/g glucan, the 72 h yields of glucose and xylose were 76.24% and 64.83%, respectively, which was 1.3-2.0 times higher than that of sulfomethylation treated SCB alone. Fenton oxidative reaction as a pre-step will help sulfomethyl group to easily and more introduce on aromatic ring, thereby accelerating the delignification.
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Affiliation(s)
- Wenjun Ying
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Gaofeng Xu
- 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.
| | - 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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8
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Shi X, Zhao B, Zhou H, Tian Y, Qiao Y, Ji B. Direct Saccharification and Fermentation for High Glucose and Ethanol Production from Non‐Detoxified Furfural Residue Without Any Pretreatment. ChemistrySelect 2019. [DOI: 10.1002/slct.201901367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xinxin Shi
- Key Laboratory of Low Carbon Energy and Chemical EngineeringCollege of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 277590 China
| | - Baofu Zhao
- Key Laboratory of Low Carbon Energy and Chemical EngineeringCollege of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 277590 China
| | - Haifeng Zhou
- Key Laboratory of Low Carbon Energy and Chemical EngineeringCollege of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 277590 China
| | - Yuanyu Tian
- Key Laboratory of Low Carbon Energy and Chemical EngineeringCollege of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 277590 China
| | - Yingyun Qiao
- State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum (East China) Qingdao 266580 China
| | - Bei Ji
- Key Laboratory of Low Carbon Energy and Chemical EngineeringCollege of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 277590 China
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9
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Chen XF, Zhang LQ, Huang C, Xiong L, Li HL, Wang C, Zhao C, Huang QL, Chen XD. Adsorption Study of Acid Soluble Lignin Removal from Sugarcane Bagasse Hydrolysate by a Self-Synthesized Resin for Lipid Production. Appl Biochem Biotechnol 2018; 188:585-601. [PMID: 30552624 DOI: 10.1007/s12010-018-02939-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 11/30/2018] [Indexed: 10/27/2022]
Abstract
An adsorption resin CX-6 was synthesized and used for acid soluble lignin (ASL) removal from sugarcane bagasse hydrolysate (SCBH). The adsorption conditions of pH value, amount of adsorbent, initial ASL concentration, and temperature on ASL adsorption were discussed. The results showed the adsorption capacity of ASL was negatively affected by increasing temperature, solution pH, and adsorbent dose, and was positively affected by increasing initial concentration. The maximum adsorption capacity of ASL was 135.3 mg/g at initial ASL concentration 6.46 g/L, adsorption temperature 298 K, and pH 1. Thermodynamic study demonstrated that the adsorption process was spontaneous and exothermic. Equilibrium and kinetics experiments were proved to fit the Freundlich isotherm model and pseudo-second-order model well, respectively. Fermentation experiment showed that the SCBH after combined overliming with resin adsorption as fermentation substrate for microbial lipid production by Trichosporon cutaneum and Trichosporon coremiiforme was as better as that of SCBH by combined overliming with active charcoal adsorption, and more efficient than that of SCBH only by overliming. Moreover, the regeneration experiment indicated that the CX-6 resin is easy to regenerate and its recirculated performance is stable. In conclusion, our results provide a promising adsorbent to detoxify lignocellulose hydrolysate for further fermentation.
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Affiliation(s)
- Xue-Fang Chen
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China
| | - Li-Quan Zhang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, People's Republic of China
| | - Chao Huang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China
| | - Lian Xiong
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China
| | - Hai-Long Li
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China
| | - Can Wang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China
| | - Cheng Zhao
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, People's Republic of China
| | - Qian-Lin Huang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.,University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, People's Republic of China
| | - Xin-de Chen
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China. .,Key Laboratory of Renewable Energy, Chinese Academy of Sciences, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China. .,Guangdong Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Tianhe District, Guangzhou, 510640, People's Republic of China.
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10
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Cunha JT, Romaní A, Costa CE, Sá-Correia I, Domingues L. Molecular and physiological basis of Saccharomyces cerevisiae tolerance to adverse lignocellulose-based process conditions. Appl Microbiol Biotechnol 2018; 103:159-175. [PMID: 30397768 DOI: 10.1007/s00253-018-9478-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/19/2018] [Accepted: 10/22/2018] [Indexed: 11/27/2022]
Abstract
Lignocellulose-based biorefineries have been gaining increasing attention to substitute current petroleum-based refineries. Biomass processing requires a pretreatment step to break lignocellulosic biomass recalcitrant structure, which results in the release of a broad range of microbial inhibitors, mainly weak acids, furans, and phenolic compounds. Saccharomyces cerevisiae is the most commonly used organism for ethanol production; however, it can be severely distressed by these lignocellulose-derived inhibitors, in addition to other challenging conditions, such as pentose sugar utilization and the high temperatures required for an efficient simultaneous saccharification and fermentation step. Therefore, a better understanding of the yeast response and adaptation towards the presence of these multiple stresses is of crucial importance to design strategies to improve yeast robustness and bioconversion capacity from lignocellulosic biomass. This review includes an overview of the main inhibitors derived from diverse raw material resultants from different biomass pretreatments, and describes the main mechanisms of yeast response to their presence, as well as to the presence of stresses imposed by xylose utilization and high-temperature conditions, with a special emphasis on the synergistic effect of multiple inhibitors/stressors. Furthermore, successful cases of tolerance improvement of S. cerevisiae are highlighted, in particular those associated with other process-related physiologically relevant conditions. Decoding the overall yeast response mechanisms will pave the way for the integrated development of sustainable yeast cell-based biorefineries.
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Affiliation(s)
- Joana T Cunha
- Centre of Biological Engineering (CEB), University of Minho, 4710-057, Braga, Portugal
| | - Aloia Romaní
- Centre of Biological Engineering (CEB), University of Minho, 4710-057, Braga, Portugal
| | - Carlos E Costa
- Centre of Biological Engineering (CEB), University of Minho, 4710-057, Braga, Portugal
| | - Isabel Sá-Correia
- Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Lucília Domingues
- Centre of Biological Engineering (CEB), University of Minho, 4710-057, Braga, Portugal.
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11
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Ma R, Zhang X, Wang Y, Zhang X. New Insights Toward Quantitative Relationships between Lignin Reactivity to Monomers and Their Structural Characteristics. CHEMSUSCHEM 2018; 11:2146-2155. [PMID: 29702732 DOI: 10.1002/cssc.201800550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/26/2018] [Indexed: 05/02/2023]
Abstract
The heterogeneous and complex structural characteristics of lignin present a significant challenge to predict its processability (e.g., depolymerization, modifications etc.) to valuable products. This study provides a detailed characterization and comparison of structural properties of seven representative biorefinery lignin samples derived from forest and agricultural residues, which were subjected to representative pretreatment methods. A range of wet chemistry and spectroscopy methods were applied to determine specific lignin structural characteristics such as functional groups, inter-unit linkages, and peak molecular weight. In parallel, oxidative depolymerization of these lignin samples to either monomeric phenolic compounds or dicarboxylic acids were conducted, and the product yields were quantified. Based on these results (lignin structural characteristics and monomer yields), we applied for the first time the multivariable linear estimation (MVLE) approach using R Statistics (an open-source programming language and software environment for statistical computing and graphics) to gain insight toward a quantitative correlation between lignin structural properties and their conversion reactivity toward oxidative depolymerization to monomers.
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Affiliation(s)
- Ruoshui Ma
- Voiland School of Chemical Engineering & Bioengineering, Washington State University, 2710 Crimson Way, Richland, WA, 99354, USA
| | - Xiumei Zhang
- College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China
| | - Yi Wang
- College of Civil Engineering, Portland State University, 1825 SW Broadway, Portland, OR, 97207, USA
| | - Xiao Zhang
- Voiland School of Chemical Engineering & Bioengineering, Washington State University, 2710 Crimson Way, Richland, WA, 99354, USA
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99354, USA
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12
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Ji H, Song Y, Zhang X, Tan T. Using a combined hydrolysis factor to balance enzymatic saccharification and the structural characteristics of lignin during pretreatment of Hybrid poplar with a fully recyclable solid acid. BIORESOURCE TECHNOLOGY 2017; 238:575-581. [PMID: 28482283 DOI: 10.1016/j.biortech.2017.04.092] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/21/2017] [Accepted: 04/22/2017] [Indexed: 06/07/2023]
Abstract
In this study, a new pretreatment strategy for lignocellulosic was developed using a fully recyclable solid acid, Toluenesulfonic acid (p-TsOH). A combined hydrolysis factor (CHF) as a pretreatment severity was used to balance enzymatic saccharification and the structural characteristics of lignin. The results from degradation of carbohydrates, enzymatic hydrolysis of cellulose and characterization of lignin by FT-IR, 31P NMR, GPC, 2D-HSQC NMR indicated that a CHF of approximately 3.90 was the optimal pretreatment severity to facilitate enzymatic saccharification and the potential serviceability of lignin. Then approximately 90% of the xylan was removed to result in a reasonable sugar yield of 76%. Residual lignin showed low molecular weight (Mw, 5783g/mol), narrow polydispersities (Mw/Mn, 1.10) and high content of phenolic hydroxyl groups (3.702mmol/g); it may be a potential feedstock for phenol monomer and polymeric materials production. In short, this process was regarded as a promising approach to achieve an efficient conversion of lignocellulosic biomass to sugar products and lignin-based materials.
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Affiliation(s)
- Hairui Ji
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yanliang Song
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Xu Zhang
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China.
| | - Tianwei Tan
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
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13
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Qin Y, Qiu X, Zhu J. Understanding Longitudinal Wood Fiber Ultra-structure for Producing Cellulose Nanofibrils Using Disk Milling with Diluted Acid Prehydrolysis. Sci Rep 2016; 6:35602. [PMID: 27796325 PMCID: PMC5086837 DOI: 10.1038/srep35602] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 09/26/2016] [Indexed: 11/16/2022] Open
Abstract
Here we used dilute oxalic acid to pretreat a kraft bleached Eucalyptus pulp (BEP) fibers to facilitate mechanical fibrillation in producing cellulose nanofibrils using disk milling with substantial mechanical energy savings. We successfully applied a reaction kinetics based combined hydrolysis factor (CHFX) as a severity factor to quantitatively control xylan dissolution and BEP fibril deploymerization. More importantly, we were able to accurately predict the degree of polymerization (DP) of disk-milled fibrils using CHFX and milling time or milling energy consumption. Experimentally determined ratio of fibril DP and number mean fibril height (diameter d), DP/d, an aspect ratio measurer, were independent of the processing conditions. Therefore, we hypothesize that cellulose have a longitudinal hierarchical structure as in the lateral direction. Acid hydrolysis and milling did not substantially cut the "natural" chain length of cellulose fibrils. This cellulose longitudinal hierarchical model provides support for using weak acid hydrolysis in the production of cellulose nanofibrils with substantially reduced energy input without negatively affecting fibril mechanical strength.
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Affiliation(s)
- Yanlin Qin
- School of Chemical Eng. and Light Industry, Guangdong Univ. Technol., Guangzhou, China
- USDA Forest Service, Forest Products Lab., Madison, WI, USA
| | - Xueqing Qiu
- School of Chemistry and Chemical Eng., South China Univ. Technology, Guangzhou, China
| | - J.Y. Zhu
- USDA Forest Service, Forest Products Lab., Madison, WI, USA
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14
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Ji H, Chen L, Zhu JY, Gleisner R, Zhang X. Reaction Kinetics Based Optimization of Furfural Production from Corncob Using a Fully Recyclable Solid Acid. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03243] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hairui Ji
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing, 100029, China
- USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin, 53726, United States
| | - Liheng Chen
- South China University of Technology, Guangzhou, 510641, China
- USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin, 53726, United States
| | - J. Y. Zhu
- USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin, 53726, United States
| | - Roland Gleisner
- USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin, 53726, United States
| | - X. Zhang
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing, 100029, China
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15
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Nwaneshiudu IC, Ganguly I, Pierobon F, Bowers T, Eastin I. Environmental assessment of mild bisulfite pretreatment of forest residues into fermentable sugars for biofuel production. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:15. [PMID: 26807148 PMCID: PMC4722614 DOI: 10.1186/s13068-016-0433-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 01/08/2016] [Indexed: 05/24/2023]
Abstract
BACKGROUND Sugar production via pretreatment and enzymatic hydrolysis of cellulosic feedstock, in this case softwood harvest residues, is a critical step in the biochemical conversion pathway towards drop-in biofuels. Mild bisulfite (MBS) pretreatment is an emerging option for the breakdown and subsequent processing of biomass towards fermentable sugars. An environmental assessment of this process is critical to discern its future sustainability in the ever-changing biofuels landscape. RESULTS The subsequent cradle-to-gate assessment of a proposed sugar production facility analyzes sugar made from woody biomass using MBS pretreatment across all seven impact categories (functional unit 1 kg dry mass sugar), with a specific focus on potential global warming and eutrophication impacts. The study found that the eutrophication impact (0.000201 kg N equivalent) is less than the impacts from conventional beet and cane sugars, while the global warming impact (0.353 kg CO2 equivalent) falls within the range of conventional processes. CONCLUSIONS This work discusses some of the environmental impacts of designing and operating a sugar production facility that uses MBS as a method of treating cellulosic forest residuals. The impacts of each unit process in the proposed facility are highlighted. A comparison to other sugar-making process is detailed and will inform the growing biofuels literature.
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Affiliation(s)
- Ikechukwu C. Nwaneshiudu
- Department of the Environment and Forest Sciences, University of Washington, Box 351750, Seattle, WA 98195 1750 USA
| | - Indroneil Ganguly
- Department of the Environment and Forest Sciences, University of Washington, Box 351750, Seattle, WA 98195 1750 USA
| | - Francesca Pierobon
- Department of the Environment and Forest Sciences, University of Washington, Box 351750, Seattle, WA 98195 1750 USA
| | - Tait Bowers
- Department of the Environment and Forest Sciences, University of Washington, Box 351750, Seattle, WA 98195 1750 USA
| | - Ivan Eastin
- Department of the Environment and Forest Sciences, University of Washington, Box 351750, Seattle, WA 98195 1750 USA
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16
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Zhou H, Yang D, Zhu JY. Molecular Structure of Sodium Lignosulfonate from Different Sources and their Properties as Dispersant of TiO2Slurry. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2014.989572] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Zhang J, Gu F, Zhu JY, Zalesny RS. Using a combined hydrolysis factor to optimize high titer ethanol production from sulfite-pretreated poplar without detoxification. BIORESOURCE TECHNOLOGY 2015; 186:223-231. [PMID: 25817033 DOI: 10.1016/j.biortech.2015.03.080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/14/2015] [Accepted: 03/16/2015] [Indexed: 05/16/2023]
Abstract
Sulfite pretreatment to overcome the recalcitrance of lignocelluloses (SPORL) was applied to poplar NE222 chips in a range of chemical loadings, temperatures, and times. The combined hydrolysis factor (CHF) as a pretreatment severity accurately predicted xylan dissolution by SPORL. Good correlations between CHF and pretreated solids enzymatic digestibility, sugar yield, and the formations of furfural and acetic acid were obtained. Therefore, CHF was used to balance sugar yield with the formation of fermentation inhibitors for high titer ethanol production without detoxification. The results indicated that optimal sugar yield can be achieved at CHF=3.1, however, fermentation using un-detoxified whole slurries of NE222 pretreated at different severities by SPORL indicated CHF≈2 produced best results. An ethanol titer of 41 g/L was achieved at total solids of approximately 20 wt% without detoxification with a low cellulase loading of 15 FPU/g glucan (27 mL/kg untreated wood).
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Affiliation(s)
- Jingzhi Zhang
- School of Life Sci. Technol., Beijing Univ. Chem. Technol., Beijing, China; USDA Forest Service, Forest Products Laboratory, Madison, WI, USA
| | - Feng Gu
- USDA Forest Service, Forest Products Laboratory, Madison, WI, USA; Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, China
| | - J Y Zhu
- USDA Forest Service, Forest Products Laboratory, Madison, WI, USA.
| | - Ronald S Zalesny
- USDA Forest Service, Northern Research Station, Rhinelander, WI, USA
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18
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Zhu JY, Chandra MS, Gu F, Gleisner R, Reiner R, Sessions J, Marrs G, Gao J, Anderson D. Using sulfite chemistry for robust bioconversion of Douglas-fir forest residue to bioethanol at high titer and lignosulfonate: a pilot-scale evaluation. BIORESOURCE TECHNOLOGY 2015; 179:390-397. [PMID: 25553570 DOI: 10.1016/j.biortech.2014.12.052] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 12/12/2014] [Accepted: 12/13/2014] [Indexed: 05/19/2023]
Abstract
This study demonstrated at the pilot-scale (50 kg) use of Douglas-fir forest harvest residue, an underutilized forest biomass, for the production of high titer and high yield bioethanol using sulfite chemistry without solid-liquor separation and detoxification. Sulfite Pretreatment to Overcome the Recalcitrance of Lignocelluloses (SPORL) was directly applied to the ground forest harvest residue with no further mechanical size reduction, at a low temperature of 145°C and calcium bisulfite or total SO2 loadings of only 6.5 or 6.6 wt% on oven dry forest residue, respectively. The low temperature pretreatment facilitated high solids fermentation of the un-detoxified pretreated whole slurry. An ethanol yield of 282 L/tonne, equivalent to 70% theoretical, with a titer of 42 g/L was achieved. SPORL solubilized approximately 45% of the wood lignin as directly marketable lignosulfonate with properties equivalent to or better than a commercial lignosulfonate, important to improve the economics of biofuel production.
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Affiliation(s)
- J Y Zhu
- USDA Forest Service, Forest Products Lab, Madison, WI, USA.
| | - M Subhosh Chandra
- USDA Forest Service, Forest Products Lab, Madison, WI, USA; Dept. of Microbiology, Yogi Vemana University, Kadapa, India
| | - Feng Gu
- Jiangsu Provincial Key and Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, China; USDA Forest Service, Forest Products Lab, Madison, WI, USA
| | | | - Rick Reiner
- USDA Forest Service, Forest Products Lab, Madison, WI, USA
| | - John Sessions
- College of Forestry, Oregon State University, Corvallis, OR, USA
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19
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Hong N, Li Y, Zeng W, Zhang M, Peng X, Qiu X. Ultrahigh molecular weight, lignosulfonate-based polymers: preparation, self-assembly behaviours and dispersion property in coal–water slurry. RSC Adv 2015. [DOI: 10.1039/c5ra02157j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hollow and quasi-solid nanospheres were readily prepared using ALSs which exhibited better dispersion properties than NSF in coal–water slurry.
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Affiliation(s)
- Nanlong Hong
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
- State Key Laboratory of Pulp and Paper Engineering
| | - Yuan Li
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
- State Key Laboratory of Pulp and Paper Engineering
| | - Weimei Zeng
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
- State Key Laboratory of Pulp and Paper Engineering
| | - Mengke Zhang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
- State Key Laboratory of Pulp and Paper Engineering
| | - Xinwen Peng
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- China
| | - Xueqing Qiu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
- State Key Laboratory of Pulp and Paper Engineering
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20
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Cheng J, Leu SY, Zhu JY, Gleisner R. High titer and yield ethanol production from undetoxified whole slurry of Douglas-fir forest residue using pH profiling in SPORL. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:22. [PMID: 25709715 PMCID: PMC4337254 DOI: 10.1186/s13068-015-0205-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 01/15/2015] [Indexed: 05/08/2023]
Abstract
BACKGROUND Forest residue is one of the most cost-effective feedstock for biofuel production. It has relatively high bulk density and can be harvested year round, advantageous for reducing transportation cost and eliminating onsite storage. However, forest residues, especially those from softwood species, are highly recalcitrant to biochemical conversion. A severe pretreatment for removing this recalcitrance can result in increased sugar degradation to inhibitors and hence cause difficulties in fermentation at high solid loadings. Here, we presented high titer ethanol production from Douglas-fir forest residue without detoxification. The strong recalcitrance of the Douglas-fir residue was removed by sulfite pretreatment to overcome the recalcitrance of lignocelluloses (SPORL). Sugar degradation to inhibitors was substantially reduced using a novel approach of "pH profiling" by delaying acid application in pretreatment, which facilitated the simultaneous enzymatic saccharification and fermentation of undetoxified whole slurry at a solid loading of 21%. RESULTS "pH profiling" reduced furan production by approximately 70% in using SPORL pretreating Douglas-fir forest residue (FS-10) comparing with the control run while without sacrificing enzymatic saccharification of the resultant substrate. pH profiling also reduced carbohydrate degradation. The improved carbohydrate yield in pretreated solids and reduced fermentation inhibitors with pH profiling resulted in a terminal ethanol titer of 48.9 ± 1.4 g/L and yield of 297 ± 9 L/tonne FS-10, which are substantially higher, i.e., by 27% in titer and by 38% in yield, than those of a control SPORL run without pH profiling. CONCLUSIONS Economical and large-volume production of commodity biofuels requires the utilization of feedstocks with low value (therefore low cost) and sustainably producible in large quantities, such as forest residues. However, most existing pretreatment technologies cannot remove the strong recalcitrance of forest residues to produce practically fermentable high titer sugars. Here, we demonstrated a commercially scalable and efficient technology capable of removing the strong recalcitrant nature of forest residues using "pH profiling" together with "low temperature SPORL". The resultant pretreated whole slurry of a Douglas-fir forest residue using this technology can be easily processed at high solids of 21% without detoxification to achieve a high ethanol yield of 297 L/tonne at 48.9 g/L. Graphical AbstractGraphic table of content.
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Affiliation(s)
- Jinlan Cheng
- />Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, China
- />USDA Forest Service, Forest Products Laboratory, Madison, WI 53719 USA
| | - Shao-Yuan Leu
- />USDA Forest Service, Forest Products Laboratory, Madison, WI 53719 USA
- />Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - JY Zhu
- />USDA Forest Service, Forest Products Laboratory, Madison, WI 53719 USA
| | - Rolland Gleisner
- />USDA Forest Service, Forest Products Laboratory, Madison, WI 53719 USA
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21
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Lei C, Zhang J, Xiao L, Bao J. An alternative feedstock of corn meal for industrial fuel ethanol production: delignified corncob residue. BIORESOURCE TECHNOLOGY 2014; 167:555-9. [PMID: 25027810 DOI: 10.1016/j.biortech.2014.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/01/2014] [Accepted: 06/03/2014] [Indexed: 05/23/2023]
Abstract
Delignified corncob residue is an industrial solid waste from xylose production using corncob as feedstock. In this study, delignified corncob residue was used as the feedstock of ethanol production by simultaneous saccharification and fermentation (SSF) and the optimal fermentation performance was investigated under various operation conditions. The ethanol titer and yield reached 75.07 g/L and 89.38%, respectively, using a regular industrial yeast strain at moderate cellulase dosage and high solids loading. A uniform SSF temperature of 37°C at both prehydrolysis and SSF stages was tested. The fermentation performance and cost of delignified corncob residue and corn meal was compared as feedstock of ethanol fermentation. The result shows that the delignified corncob residue is competitive to corn meal as ethanol production feedstock. The study gives a typical case to demonstrate the potential of intensively processed lignocellulose as the alternative feedstock of corn meal for industrial fuel ethanol production.
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Affiliation(s)
- Cheng Lei
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jian Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Tsinghua University, Beijing 10084, China
| | - Lin Xiao
- Shandong Longlive Biotechnology Co., High-Tech Development Zone, Yucheng, Shandong 251200, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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22
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Cheng J, Leu SY, Zhu JY, Jeffries TW. Ethanol production from non-detoxified whole slurry of sulfite-pretreated empty fruit bunches at a low cellulase loading. BIORESOURCE TECHNOLOGY 2014; 164:331-337. [PMID: 24874873 DOI: 10.1016/j.biortech.2014.04.102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/27/2014] [Accepted: 04/28/2014] [Indexed: 06/03/2023]
Abstract
Sulfite pretreatment to overcome the recalcitrance of lignocelluloses (SPORL) was applied to an empty fruit bunches (EFB) for ethanol production. SPORL facilitated delignification through lignin sulfonation and dissolution of xylan to result in a highly digestible substrate. The pretreated whole slurry was enzymatically saccharified at a solids loading of 18% using a relatively low cellulase loading of 15 FPU/g glucan and simultaneously fermented without detoxification using Saccharomyces cerevisiae of YRH400. An ethanol yield of 217 L/tonne EFB was achieved at titer of 32 g/L. Compared with literature studies, SPORL produced high ethanol yield and titer with much lower cellulase loading without detoxification.
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Affiliation(s)
- Jinlan Cheng
- Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, China; USDA Forest Service, Forest Products Lab, Madison, WI 53719, USA
| | - Shao-Yuan Leu
- Dept. Civil Environ. Eng., Hong Kong Polytechnic University, Kowloon, Hong Kong; USDA Forest Service, Forest Products Lab, Madison, WI 53719, USA
| | - J Y Zhu
- USDA Forest Service, Forest Products Lab, Madison, WI 53719, USA; Dept. Biological Systems Eng., University of Wisconsin-Madison, Madison, WI 53705, USA.
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23
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Qian Y, Deng Y, Li H, Qiu X. Reaction-Free Lignin Whitening via a Self-Assembly of Acetylated Lignin. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5010338] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yong Qian
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University of Technology, Guangzhou, China 510640
| | - Yonghong Deng
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University of Technology, Guangzhou, China 510640
| | - Hao Li
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University of Technology, Guangzhou, China 510640
| | - Xueqing Qiu
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Pulp
and Paper Engineering, South China University of Technology, Guangzhou, China 510640
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24
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Zhang C, Houtman C, Zhu J. Using low temperature to balance enzymatic saccharification and furan formation during SPORL pretreatment of Douglas-fir. Process Biochem 2014. [DOI: 10.1016/j.procbio.2013.12.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Jung YH, Park HM, Kim IJ, Park YC, Seo JH, Kim KH. One-pot pretreatment, saccharification and ethanol fermentation of lignocellulose based on acid–base mixture pretreatment. RSC Adv 2014. [DOI: 10.1039/c4ra10092a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
One-pot pretreatment, saccharification and ethanol fermentation of lignocellulose, which is based on acid–base mixture pretreament, will greatly reduces the overall processing costs not only for the production of cellulosic ethanol but also for the lignocellulose-based biorefinery.
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Affiliation(s)
- Young Hoon Jung
- Department of Biotechnology
- Korea University Graduate School
- Seoul 136-713, Republic of Korea
| | - Hyun Min Park
- Department of Biotechnology
- Korea University Graduate School
- Seoul 136-713, Republic of Korea
| | - In Jung Kim
- Department of Biotechnology
- Korea University Graduate School
- Seoul 136-713, Republic of Korea
| | - Yong-Cheol Park
- Department of Bio and Fermentation Convergence Technology
- Kookmin University
- Seoul 136-702, Republic of Korea
| | - Jin-Ho Seo
- Department of Agricultural Biotechnology
- Seoul National University
- Seoul, Republic of Korea
| | - Kyoung Heon Kim
- Department of Biotechnology
- Korea University Graduate School
- Seoul 136-713, Republic of Korea
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26
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Zhou H, Leu SY, Wu X, Zhu JY, Gleisner R, Yang D, Qiu X, Horn E. Comparisons of high titer ethanol production and lignosulfonate properties by SPORL pretreatment of lodgepole pine at two temperatures. RSC Adv 2014. [DOI: 10.1039/c4ra03608e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Mountain pine beetle killed lodgepole pine wood chips were pretreated by SPORL at 180 °C for 25 min and 165 °C for 75 min using the same chemical loadings, which represent the same pretreatment severity.
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Affiliation(s)
- Haifeng Zhou
- School of Chem. Chem. Eng
- South China Univ. Technol
- Guangzhou, China
- USDA Forest Service
- Forest Products Laboratory
| | - Shao-Yuan Leu
- USDA Forest Service
- Forest Products Laboratory
- Madison, USA
- Dept. Civil Environ. Eng
- Hong Kong Polytechnic University
| | - Xiaolei Wu
- School of Chem. Chem. Eng
- South China Univ. Technol
- Guangzhou, China
| | - J. Y. Zhu
- USDA Forest Service
- Forest Products Laboratory
- Madison, USA
| | | | - Dongjie Yang
- School of Chem. Chem. Eng
- South China Univ. Technol
- Guangzhou, China
| | - Xueqing Qiu
- School of Chem. Chem. Eng
- South China Univ. Technol
- Guangzhou, China
| | - Eric Horn
- BioPulping International, Inc
- Madison, USA
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