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Arora R, Singh P, Sarangi PK, Kumar S, Chandel AK. A critical assessment on scalable technologies using high solids loadings in lignocellulose biorefinery: challenges and solutions. Crit Rev Biotechnol 2024; 44:218-235. [PMID: 36592989 DOI: 10.1080/07388551.2022.2151409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 10/13/2022] [Accepted: 11/07/2022] [Indexed: 01/04/2023]
Abstract
The pretreatment and the enzymatic saccharification are the key steps in the extraction of fermentable sugars for further valorization of lignocellulosic biomass (LCB) to biofuels and value-added products via biochemical and/or chemical conversion routes. Due to low density and high-water absorption capacity of LCB, the large volume of water is required for its processing. Integration of pretreatment, saccharification, and co-fermentation has succeeded and well-reported in the literature. However, there are only few reports on extraction of fermentable sugars from LCB with high biomass loading (>10% Total solids-TS) feasible to industrial reality. Furthermore, the development of enzymatic cocktails can overcome technology hurdles with high biomass loading. Hence, a better understanding of constraints involved in the development of technology with high biomass loading can result in an economical and efficient yield of fermentable sugars for the production of biofuels and bio-chemicals with viable titer, rate, and yield (TRY) at industrial scale. The present review aims to provide a critical assessment on the production of fermentable sugars from lignocelluloses with high solid biomass loading. The impact of inhibitors produced during both pretreatment and saccharification has been elucidated. Moreover, the limitations imposed by high solid loading on efficient mass transfer during saccharification process have been elaborated.
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Affiliation(s)
- Richa Arora
- Department of Microbiology, Punjab Agricultural University, Ludhiana, India
| | - Poonam Singh
- Department of Chemistry, University of Petroleum and Energy Studies, Dehradun, India
| | | | - Sachin Kumar
- Biochemical Conversion Division, Sardar Swaran Singh National Institute of Bio-Energy, Kapurthala, India
| | - Anuj K Chandel
- Department of Biotechnology, Engineering School of Lorena (EEL), University of São Paulo, Lorena, Brazil
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Palliprath S, Poolakkalody NJ, Ramesh K, Mangalan SM, Kabekkodu SP, Santiago R, Manisseri C. Pretreatment of sugarcane postharvest leaves by γ-valerolactone/water/FeCl3 system for enhanced glucan and bioethanol production. INDUSTRIAL CROPS AND PRODUCTS 2023; 197:116571. [DOI: 10.1016/j.indcrop.2023.116571] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
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3
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Reena R, Alphy MP, Reshmy R, Thomas D, Madhavan A, Chaturvedi P, Pugazhendhi A, Awasthi MK, Ruiz H, Kumar V, Sindhu R, Binod P. Sustainable valorization of sugarcane residues: Efficient deconstruction strategies for fuels and chemicals production. BIORESOURCE TECHNOLOGY 2022; 361:127759. [PMID: 35961508 DOI: 10.1016/j.biortech.2022.127759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
The global climate crisis and the ongoing increase in fossil-based fuels have led to an alternative solution of using biomass for fuel production. Sugarcane bagasse (SCB) is an agricultural residue with a global production of more than 100 million metric tons and it has various applications in a biorefinery concept. This review brings forth the composition, life cycle assessment, and various pretreatments for the deconstruction techniques of SCB for the production of valuable products. The ongoing research in the production of biofuels, biogas, and electricity utilizing the bagasse was elucidated. SCB is used in the production of carboxymethyl cellulose, pigment, lactic acid, levulinic acid, and xylooligosaccharides and it has prospective in meeting the demand for global energy and environmental sustainability.
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Affiliation(s)
- Rooben Reena
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Maria Paul Alphy
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - R Reshmy
- Department of Science and Humanities, Providence College of Engineering, Chengannur 689 122, Kerala, India
| | - Deepa Thomas
- Post Graduate and Research Department of Chemistry, Bishop Moore College, Mavelikara 690 110, Kerala, India
| | - Aravind Madhavan
- Rajiv Gandhi Center for Biotechnology, Jagathy, Thiruvananthapuram 695 014, Kerala, India; School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India
| | - Preeti Chaturvedi
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, CSIR Indian Institute for Toxicology Research (CSIR-IITR), 31 MG Marg, Lucknow 226 001, India
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712 100, China
| | - Hector Ruiz
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, Saltillo, Coahuila 25280, Mexico
| | - Vinod Kumar
- Fermentation Technology Division, CSIR - Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001, J & K, India
| | - Raveendran Sindhu
- Department of Food Technology, T K M Institute of Technology, Kollam-691505, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India.
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Aristizábal-Marulanda V, Solarte-Toro JC, Cardona Alzate CA. Study of biorefineries based on experimental data: production of bioethanol, biogas, syngas, and electricity using coffee-cut stems as raw material. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:24590-24604. [PMID: 32594433 DOI: 10.1007/s11356-020-09804-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Energy-driven biorefineries can be designed considering biotechnological and thermochemical conversion pathways. Nevertheless, energy and environmental comparisons are necessary to establish the best way to upgrade lignocellulosic biomass and set the requirements of these processes in different scenarios. This paper aims to evaluate experimentally a biorefinery producing energy vectors using coffee-cut stems (CCS) as feedstock. The obtained yields were the basis for energy and environmental analysis, in two different biorefinery scenarios: (i) production of bioethanol and biogas and (ii) production of syngas and electricity. The energy results indicated that the overall energy efficiency calculated in the first scenario was only 9.15%. Meanwhile, the second biorefinery configuration based on thermochemical routes presented an energy efficiency value of 70.89%. This difference was attributed to the higher consumption of utilities in the biorefinery based on biotechnological routes. The environmental results showed that the impact category of climate change for the first biorefinery (i.e., 0.0193 kg CO2 eq./MJ) had a lower value than that of the second process (i.e., 0.2377 kg CO2 eq./MJ). Thus, the biorefinery based on the biotechnological route presented a better environmental performance. Additionally, the results for both biorefineries allowed concluding that the inclusion of by-products and co-products in the calculation of the environmental analysis can dramatically affect the results.
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Affiliation(s)
- Valentina Aristizábal-Marulanda
- Instituto de Biotecnología y Agroindustria, Departamento de Ingeniería Química, Universidad Nacional de Colombia sede Manizales, Km 07 vía al Magdalena, Zip Code: 170003, Manizales, Caldas, Colombia
- Facultad de Tecnologías, Escuela de Tecnología Química, Grupo Desarrollo de Procesos Químicos, Universidad Tecnológica de Pereira, Pereira, Colombia
| | - Juan Camilo Solarte-Toro
- Instituto de Biotecnología y Agroindustria, Departamento de Ingeniería Química, Universidad Nacional de Colombia sede Manizales, Km 07 vía al Magdalena, Zip Code: 170003, Manizales, Caldas, Colombia
| | - Carlos Ariel Cardona Alzate
- Instituto de Biotecnología y Agroindustria, Departamento de Ingeniería Química, Universidad Nacional de Colombia sede Manizales, Km 07 vía al Magdalena, Zip Code: 170003, Manizales, Caldas, Colombia.
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Cellulosic Ethanol: Improving Cost Efficiency by Coupling Semi-Continuous Fermentation and Simultaneous Saccharification Strategies. Processes (Basel) 2020. [DOI: 10.3390/pr8111459] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A novel approach to improve ethanol production from sugarcane bagasse is proposed. Biomass was pretreated with sodium hydroxide, sulfuric, oxalic, and maleic acids (1% w/v) at different temperatures (130–170 °C) and times (10–30 min). The pretreatment with NaOH at 160 °C for 20 min was found to be the most efficient for further enzymatic saccharification. A semi-continuous fermentation system coupled with a simultaneous saccharification and fermentation strategy was used, attaining fermented liquor every 24 h. The amount of enzymes needed for saccharification was optimized, as well as the production time and ethanol concentration. The process occurred with near to complete depletion of glucose, obtaining ethanol concentrations ranging from 8.36 to 10.79% (v/v). The whole system, at bench scale, showed stability over 30 days, and ease of management and control. This strategy may improve cost efficiency in the production of cellulosic ethanol at industrial scale.
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Expeditious production of concentrated glucose-rich hydrolysate from sugarcane bagasse and its fermentation to lactic acid with high productivity. FOOD AND BIOPRODUCTS PROCESSING 2020. [DOI: 10.1016/j.fbp.2020.08.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Zhang J, Wang L, Chen H. Effect of periodic high-frequency vibration with rigid spheres added on high solids enzymatic hydrolysis of steam-exploded corn straw. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Gomes MG, dos Santos RV, Barreto EDS, Baffi MA, Gurgel LVA, Baêta BEL, Pasquini D. Pretreated Sugarcane Bagasse with Citric Acid Applied in Enzymatic Hydrolysis. Ind Biotechnol (New Rochelle N Y) 2020. [DOI: 10.1089/ind.2019.0039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Michelle Garcia Gomes
- Federal University of Uberlândia, Chemistry Institute, Campus Santa Mônica, Uberlândia, Brazil
| | - Renata Vidal dos Santos
- Federal University of Uberlândia, Chemistry Institute, Campus Santa Mônica, Uberlândia, Brazil
| | - Elisa da Silva Barreto
- Federal University of Viçosa, Department of Biochemistry and Molecular Biology, Viçosa, Brazil
| | - Milla Alves Baffi
- Federal University of Uberlândia, Agricultural Sciences Institute, Campus Umuarama, Uberlândia, Brazil
| | | | - Bruno Eduardo Lobo Baêta
- Federal University of Ouro Preto, Institute of Biological and Exact Sciences, Ouro Preto, Brazil
| | - Daniel Pasquini
- Federal University of Uberlândia, Chemistry Institute, Campus Santa Mônica, Uberlândia, Brazil
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da Silva AS, Espinheira RP, Teixeira RSS, de Souza MF, Ferreira-Leitão V, Bon EPS. Constraints and advances in high-solids enzymatic hydrolysis of lignocellulosic biomass: a critical review. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:58. [PMID: 32211072 PMCID: PMC7092515 DOI: 10.1186/s13068-020-01697-w] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 03/11/2020] [Indexed: 05/22/2023]
Abstract
The industrial production of sugar syrups from lignocellulosic materials requires the conduction of the enzymatic hydrolysis step at high-solids loadings (i.e., with over 15% solids [w/w] in the reaction mixture). Such conditions result in sugar syrups with increased concentrations and in improvements in both capital and operational costs, making the process more economically feasible. However, this approach still poses several technical hindrances that impact the process efficiency, known as the "high-solids effect" (i.e., the decrease in glucan conversion yields as solids load increases). The purpose of this review was to present the findings on the main limitations and advances in high-solids enzymatic hydrolysis in an updated and comprehensive manner. The causes for the rheological limitations at the onset of the high-solids operation as well as those influencing the "high-solids effect" will be discussed. The subject of water constraint, which results in a highly viscous system and impairs mixing, and by extension, mass and heat transfer, will be analyzed under the perspective of the limitations imposed to the action of the cellulolytic enzymes. The "high-solids effect" will be further discussed vis-à-vis enzymes end-product inhibition and the inhibitory effect of compounds formed during the biomass pretreatment as well as the enzymes' unproductive adsorption to lignin. This review also presents the scientific and technological advances being introduced to lessen high-solids hydrolysis hindrances, such as the development of more efficient enzyme formulations, biomass and enzyme feeding strategies, reactor and impeller designs as well as process strategies to alleviate the end-product inhibition. We surveyed the academic literature in the form of scientific papers as well as patents to showcase the efforts on technological development and industrial implementation of the use of lignocellulosic materials as renewable feedstocks. Using a critical approach, we expect that this review will aid in the identification of areas with higher demand for scientific and technological efforts.
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Affiliation(s)
- Ayla Sant’Ana da Silva
- Biocatalysis Laboratory, National Institute of Technology, Ministry of Science, Technology, Innovation and Communication, Rio de Janeiro, RJ 20081-312 Brazil
- Bioethanol Laboratory, Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-909 Brazil
| | - Roberta Pereira Espinheira
- Biocatalysis Laboratory, National Institute of Technology, Ministry of Science, Technology, Innovation and Communication, Rio de Janeiro, RJ 20081-312 Brazil
- Bioethanol Laboratory, Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-909 Brazil
| | - Ricardo Sposina Sobral Teixeira
- Bioethanol Laboratory, Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-909 Brazil
| | - Marcella Fernandes de Souza
- Laboratory of Analytical Chemistry and Applied Ecochemistry, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Viridiana Ferreira-Leitão
- Biocatalysis Laboratory, National Institute of Technology, Ministry of Science, Technology, Innovation and Communication, Rio de Janeiro, RJ 20081-312 Brazil
- Bioethanol Laboratory, Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-909 Brazil
| | - Elba P. S. Bon
- Bioethanol Laboratory, Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-909 Brazil
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Tang S, Dong Q, Fang Z, Cong WJ, Miao ZD. High-concentrated substrate enzymatic hydrolysis of pretreated rice straw with glycerol and aluminum chloride at low cellulase loadings. BIORESOURCE TECHNOLOGY 2019; 294:122164. [PMID: 31563115 DOI: 10.1016/j.biortech.2019.122164] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
Rice straw was pretreated with glycerol and AlCl3 for enzymatic hydrolysis at low cellulase loadings. Based on a central composite design, 83% delignification, 94% hemicellulose removal, and 92% cellulose recovery (or 76% cellulose in solid residue) were achieved under the optimized pretreatment conditions (0.08 mol/L AlCl3 as catalyst at 146.8 °C for 20 min with 90% glycerol). During glycerol-AlCl3 pretreatment, the lignin-carbohydrate complex was depolymerized, resulting in the complex and recalcitrant construction of straw effectively being destroyed. The enzyme adsorption ability of pretreated straw was 16.5 times that for the original sample. After pretreatment, glucose yield was increased by 2.4 times to 74% for 48 h. Moreover, concentrated solid (15%) with low cellulase loading (3.3 FPU/g dry substrate) achieved 58.6% glucose yield, and further increased by 12% to 65.7% by adding Tween 80. Glycerol-AlCl3 pretreatment was a promising approach to realize high-concentrated solid hydrolysis for sugars at low cellulase loadings.
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Affiliation(s)
- Song Tang
- Biomass Group, College of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing, Jiangsu 210031, China
| | - Qian Dong
- Biomass Group, College of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing, Jiangsu 210031, China
| | - Zhen Fang
- Biomass Group, College of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing, Jiangsu 210031, China. http://biomass-group.njau.edu.cn/
| | - Wen-Jie Cong
- Biomass Group, College of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing, Jiangsu 210031, China
| | - Zheng-Diao Miao
- Biomass Group, College of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing, Jiangsu 210031, China
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Baral P, Jain L, Kurmi AK, Kumar V, Agrawal D. Augmented hydrolysis of acid pretreated sugarcane bagasse by PEG 6000 addition: a case study of Cellic CTec2 with recycling and reuse. Bioprocess Biosyst Eng 2019; 43:473-482. [DOI: 10.1007/s00449-019-02241-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/23/2019] [Indexed: 12/01/2022]
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Khonngam T, Salakkam A. Bioconversion of sugarcane bagasse and dry spent yeast to ethanol through a sequential process consisting of solid-state fermentation, hydrolysis, and submerged fermentation. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107284] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Gatt E, Khatri V, Bley J, Barnabé S, Vandenbossche V, Beauregard M. Enzymatic hydrolysis of corn crop residues with high solid loadings: New insights into the impact of bioextrusion on biomass deconstruction using carbohydrate-binding modules. BIORESOURCE TECHNOLOGY 2019; 282:398-406. [PMID: 30884460 DOI: 10.1016/j.biortech.2019.03.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 03/07/2019] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
Lignocellulosic biomass is a sustainable source of renewable substrate to produce low carbon footprint energy and materials. Biomass conversion is usually performed in two steps: a biomass pretreatment for improving cellulose accessibility followed by enzymatic hydrolysis of cellulose. In this study we investigated the efficiency of a bioextrusion pretreatment (extrusion in the presence of cellulase enzyme) for production of reducing sugars from corn crop agricultural residues. Our results demonstrate that bioextrusion increased the reducing sugar conversion yield by at least 94% at high solid/liquid ratio (14%-40%). Monitoring biomass surface with carbohydrate-binding modules (FTCM-depletion assay) revealed that well known negative impact of high solid/liquid ratio on conversion yield is not due to the lack of exposed cellulose which was abundant under such conditions. Bioextrusion was found to be less efficient on alkaline pretreated biomass but being a mild and solvent limiting pretreatment, it might help to minimize the waste stream.
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Affiliation(s)
- Etienne Gatt
- Laboratoire de Chimie Agro-industrielle, LCA, Université de Toulouse, INRA, Toulouse, France.
| | - Vinay Khatri
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; PROTEO, Université Laval, Québec G1V 4G2, Canada.
| | - Julien Bley
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, Canada; Innofibre, 3351 Boulevard des Forges, Québec G9A 5E6, Canada
| | - Simon Barnabé
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, Canada
| | - Virginie Vandenbossche
- Laboratoire de Chimie Agro-industrielle, LCA, Université de Toulouse, INRA, Toulouse, France.
| | - Marc Beauregard
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, Canada; PROTEO, Université Laval, Québec G1V 4G2, Canada
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Li J, Zhang M, Wang D. High-solids hydrolysis of corn stover to achieve high sugar yield and concentration through high xylan recovery from magnesium oxide-ethanol pretreatment. BIORESOURCE TECHNOLOGY 2019; 280:352-359. [PMID: 30780095 DOI: 10.1016/j.biortech.2019.02.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/09/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
MgO-ethanol pretreatment was studied to boost sugar conversions and concentrations during enzymatic hydrolysis. Although corn stover pretreated by MgO and 50% ethanol had the highest glucan and xylan recoveries (89 and 71%), excessive xylan/glucan ratio (54.8%) hinders the access of enzyme to internal cellulose and hemicellulose and only 57% glucan and 46% xylan conversions and 43 g/L sugars were obtained after hydrolysis (10%-solids loading and 2 mL enzyme/g treated biomass). Corn stover pretreated by MgO and 30% ethanol had a moderate xylan/glucan ratio (39.1%), achieving higher glucan and xylan conversions (58 and 48%) and sugar concentrations (70 g/L) after hydrolysis (16%-solids loading and 1 mL enzyme/g treated biomass). A 16%-solids loading largely avoids the poor mixing issue caused by excessive high-solids loading. The addition of Tween 80 effectively eased the binding of lignin with enzyme, boosting glucan and xylan conversions to 67 and 68% and sugar concentrations to 89 g/L.
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Affiliation(s)
- Jun Li
- Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66506, United States
| | - Meng Zhang
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, KS 66506, United States
| | - Donghai Wang
- Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66506, United States.
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Sabiha-Hanim S, Asyikin Abd Halim N. Sugarcane Bagasse Pretreatment Methods for Ethanol Production. FUEL ETHANOL PRODUCTION FROM SUGARCANE 2019. [DOI: 10.5772/intechopen.81656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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16
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Jain L, Kurmi AK, Agrawal D. Benchmarking hydrolytic potential of cellulase cocktail obtained from mutant strain of Talaromyces verruculosus IIPC 324 with commercial biofuel enzymes. 3 Biotech 2019; 9:23. [PMID: 30622861 DOI: 10.1007/s13205-018-1547-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 12/16/2018] [Indexed: 12/23/2022] Open
Abstract
In the present study, an attempt was made to benchmark the hydrolytic potential of cellulase cocktail obtained from stable mutant UV-8 of Talaromyces verruculosus IIPC 324 (NFCCI 4117) with three commercially available cellulases. With two experimental approaches, acid-pretreated sugarcane bagasse was subjected to hydrolysis for 72 h, where all the enzymes were dosed on the basis of common protein or common cellulase activity /g cellulose content. Concentrated fungal enzyme (CFE) of mutant UV-8 resulted in ~ 59% and 55% saccharification of acid-pretreated sugarcane bagasse after 72 h at 55 °C and pH 4.5 with respect to reducing sugar release, when dosed at 25 mg protein/g and 500 IU CMC'ase/g cellulose, respectively. On the other hand, at similar dosages, the performance of Cellic CTec2 was best resulting in 77% and 66% saccharification, respectively. When enzyme desorption studies were undertaken by carrying out cellulase activities in saccharified broth after 72 h CFE of UV-8 emerged as the best cellulase cocktail. A minimum of 90% endoglucanase and 60% cellobiohydrolase I was successfully desorbed from residual biomass, thereby increasing the probability of enzyme recycle and reuse for next round of hydrolysis.
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Affiliation(s)
- Lavika Jain
- 1Biotechnology Conversion Area, Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005 India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad, 201002 India
| | - Akhilesh Kumar Kurmi
- 1Biotechnology Conversion Area, Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005 India
| | - Deepti Agrawal
- 1Biotechnology Conversion Area, Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005 India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad, 201002 India
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Wischral D, Arias JM, Modesto LF, de França Passos D, Pereira N. Lactic acid production from sugarcane bagasse hydrolysates by Lactobacillus pentosus
: Integrating xylose and glucose fermentation. Biotechnol Prog 2018; 35:e2718. [DOI: 10.1002/btpr.2718] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/16/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Daiana Wischral
- Laboratórios de Desenvolvimento de Bioprocessos, Escola de Química, Departamento de Engenharia Bioquímica; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
| | - Johanna Méndez Arias
- Laboratórios de Desenvolvimento de Bioprocessos, Escola de Química, Departamento de Engenharia Bioquímica; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
- Escuela Ingeniería Industrial; Instituto de Investigaciones en Ingeniería, Universidad de Costa Rica. Ciudad Universitaria Rodrigo Facio; San Pedro Montes de Oca Costa Rica
| | - Luiz Felipe Modesto
- Laboratórios de Desenvolvimento de Bioprocessos, Escola de Química, Departamento de Engenharia Bioquímica; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
| | - Douglas de França Passos
- Laboratórios de Desenvolvimento de Bioprocessos, Escola de Química, Departamento de Engenharia Bioquímica; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
| | - Nei Pereira
- Laboratórios de Desenvolvimento de Bioprocessos, Escola de Química, Departamento de Engenharia Bioquímica; Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
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18
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Wang C, Su X, Sun W, Zhou S, Zheng J, Zhang M, Sun M, Xue J, Liu X, Xing J, Chen S. Efficient production of succinic acid from herbal extraction residue hydrolysate. BIORESOURCE TECHNOLOGY 2018; 265:443-449. [PMID: 29935453 DOI: 10.1016/j.biortech.2018.06.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/12/2018] [Accepted: 06/13/2018] [Indexed: 06/08/2023]
Abstract
In this study, six different herbal-extraction residues were evaluated for succinic acid production in terms of chemical composition before and after dilute acid pretreatment (DAP) and sugar release performance. Chemical composition showed that pretreated residues of Glycyrrhiza uralensis Fisch (GUR) and Morus alba L. (MAR) had the highest cellulose content, 50% and 52%, respectively. Higher concentrations of free sugars (71.6 g/L total sugar) and higher hydrolysis yield (92%) were both obtained under 40 FPU/g DM at 10% solid loading for GUR. Using scanning electron microscopy (SEM), GUR was found to show a less compact structure due to process of extraction. Specifically, the fibers in pretreated GUR were coarse and disordered compared with that of GUR indicated by SEM. Finally, 65 g/L succinic acid was produced with a higher yield of 0.89 g/g total sugar or 0.49 g/g GUR. Our results illustrate the potential of GUR for succinic acid production.
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Affiliation(s)
- Caixia Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, PR China
| | - Xinyao Su
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, PR China; School of Life Science, Huai Bei Normal University, Huaibei 23500, PR China
| | - Wei Sun
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, PR China
| | - Sijing Zhou
- Beijing Radiation Center, Beijing 100015, PR China
| | - Junyu Zheng
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, PR China
| | - Mengting Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, PR China; School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
| | - Mengchu Sun
- School of Life Science, Huai Bei Normal University, Huaibei 23500, PR China
| | - Jianping Xue
- School of Life Science, Huai Bei Normal University, Huaibei 23500, PR China
| | - Xia Liu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
| | - Jianmin Xing
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shilin Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, PR China.
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19
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Sewsynker-Sukai Y, Gueguim Kana EB. Simultaneous saccharification and bioethanol production from corn cobs: Process optimization and kinetic studies. BIORESOURCE TECHNOLOGY 2018; 262:32-41. [PMID: 29689438 DOI: 10.1016/j.biortech.2018.04.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/11/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
This study investigates the simultaneous saccharification and fermentation (SSF) process for bioethanol production from corn cobs with prehydrolysis (PSSF) and without prehydrolysis (OSSF). Two response surface models were developed with high coefficients of determination (>0.90). Process optimization gave high bioethanol concentrations and bioethanol conversions for the PSSF (36.92 ± 1.34 g/L and 62.36 ± 2.27%) and OSSF (35.04 ± 0.170 g/L and 58.13 ± 0.283%) models respectively. Additionally, the logistic and modified Gompertz models were used to study the kinetics of microbial cell growth and ethanol formation under microaerophilic and anaerobic conditions. Cell growth in the OSSFmicroaerophilic process gave the highest maximum specific growth rate (µmax) of 0.274 h-1. The PSSFmicroaerophilic bioprocess gave the highest potential maximum bioethanol concentration (Pm) (42.24 g/L). This study demonstrated that microaerophilic rather than anaerobic culture conditions enhanced cell growth and bioethanol production, and that additional prehydrolysis steps do not significantly impact on the bioethanol concentration and conversion in SSF process.
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Affiliation(s)
| | - E B Gueguim Kana
- University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa.
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20
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Yu H, Xu Y, Ni Y, Wu Q, Liu S, Li L, Yu S, Ji Z. Enhanced enzymatic hydrolysis of cellulose from waste paper fibers by cationic polymers addition. Carbohydr Polym 2018; 200:248-254. [PMID: 30177163 DOI: 10.1016/j.carbpol.2018.07.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/21/2018] [Accepted: 07/25/2018] [Indexed: 12/24/2022]
Abstract
Cationic polymers (cationic polyacrylamide (CPAM), polyethyleneimine (PEI) or cationic starch (CS)) were used to enhance the enzymatic hydrolysis of waste paper fibers (WPFs) at 15% (w/w) solids concentration. Results showed that 0.05 g/L PEI, CPAM and CS resulted in 72.5%, 65.9% and 59.7% conversion of WPFs, increased by 15.4%, 8.8% and 2.6%, respectively, compared with control (57.1%). PEI was shown to have a larger effect than CPAM and CS, and generate a total sugar concentration of 73.9 g/L. Improvement in hydrolysis with cationic polymer addition is attributed to increased cellulase adsorption on cellulose through electrostatic attraction, rather than enhancement of cellulase activity. A patching/ bridging mechanism of cationic polymer enhancement of cellulose adsorption in cellulose is hypothesized. PEI exhibited maximum cellulose binding for polymers examined and appears to promote binding through a patching mechanism. CPAM and CS adsorbed a relatively low cellulase through bridging mechanism. In addition, enzyme loading could be reduced by addition of cationic polymers to obtain the same glucose yield, especially when PEI was used.
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Affiliation(s)
- Hailong Yu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Yuqin Xu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yonghao Ni
- Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Qiong Wu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Shiwei Liu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Lu Li
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Shitao Yu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Zhe Ji
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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21
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Montipó S, Ballesteros I, Fontana RC, Liu S, Martins AF, Ballesteros M, Camassola M. Integrated production of second generation ethanol and lactic acid from steam-exploded elephant grass. BIORESOURCE TECHNOLOGY 2018; 249:1017-1024. [PMID: 30045483 DOI: 10.1016/j.biortech.2017.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 06/08/2023]
Abstract
Elephant grass was subjected to steam explosion to enhance cellulose accessibility and convert it into ethanol. After catalyzed pretreatment at 190 °C for 5 min, enzymatic hydrolysis was carried out using high rate of solid loading combined with different enzyme dosages. Assays employing 20% (w/v) solids loading and an enzyme dosage of 20 FPU g-1 substrate led to a yield of 86.02 g glucose released per 100 g potential glucose in the water insoluble solids. This condition was selected to carry out the simultaneous saccharification and fermentation procedure through S. cerevisiae CAT-1, producing 42.25 g L-1 ethanol with a yield of 74.57% regard to the maximum theoretical. The liquor containing C5 and C6-sugars was successfully converted into lactic acid using L. buchneri NRRL B-30929, resulting in 13.35 g L-1 with a yield of 68.21% in relation to the maximum theoretical.
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Affiliation(s)
- Sheila Montipó
- Biotechnology Institute, University of Caxias do Sul, Caxias do Sul, RS 95070-560, Brazil.
| | - Ignacio Ballesteros
- Renewable Energies Department, CIEMAT - Research Centre for Energy, Environment and Technology, Madrid 28040, Spain
| | | | - Siqing Liu
- Renewable Product Technology, NCAUR-ARS, U.S. Department of Agriculture, Peoria, IL 61604, USA
| | | | - Mercedes Ballesteros
- Renewable Energies Department, CIEMAT - Research Centre for Energy, Environment and Technology, Madrid 28040, Spain
| | - Marli Camassola
- Biotechnology Institute, University of Caxias do Sul, Caxias do Sul, RS 95070-560, Brazil.
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22
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Bazoti SF, Golunski S, Pereira Siqueira D, Scapini T, Barrilli ÉT, Alex Mayer D, Barros KO, Rosa CA, Stambuk BU, Alves SL, Valério A, de Oliveira D, Treichel H. Second-generation ethanol from non-detoxified sugarcane hydrolysate by a rotting wood isolated yeast strain. BIORESOURCE TECHNOLOGY 2017; 244:582-587. [PMID: 28803109 DOI: 10.1016/j.biortech.2017.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 08/02/2017] [Accepted: 08/03/2017] [Indexed: 06/07/2023]
Abstract
This work aims to evaluate the production of second-generation ethanol from sugarcane bagasse hydrolysate without acetic acid (inhibitor) detoxification. Three isolated yeast strains from lignocellulosic materials were evaluated, and one strain (UFFS-CE-3.1.2), identified using large subunit rDNA sequences as Wickerhamomyces sp., showed satisfactory results in terms of ethanol production without acetic acid removal. A Plackett-Burman design was used to evaluate the influence of hydrolysate composition and nutrients supplementation in the fermentation medium for the second-generation ethanol production. Two fermentation kinetics were performed, with controlled pH at 5.5, or keeping the initial pH at 4.88. The fermentation conducted without pH adjustment and supplementation of nutrients reported the best result in terms of second-generation ethanol production. Wickerhamomyces sp., isolated as UFFS-CE-3.1.2, was considered promising in the production of second-generation ethanol by using crude (non-detoxified) sugarcane hydrolysate.
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Affiliation(s)
- Suzana F Bazoti
- Federal University of Santa Catarina, Department of Chemical and Food Engineering, Brazil; Federal University of Fronteira Sul - Campus Erechim - RS, Laboratory of Microbiology and Bioprocesses, Brazil
| | - Simone Golunski
- Federal University of Fronteira Sul - Campus Erechim - RS, Laboratory of Microbiology and Bioprocesses, Brazil
| | - Diego Pereira Siqueira
- Federal University of Fronteira Sul - Campus Erechim - RS, Laboratory of Microbiology and Bioprocesses, Brazil
| | - Thamarys Scapini
- Federal University of Fronteira Sul - Campus Erechim - RS, Laboratory of Microbiology and Bioprocesses, Brazil
| | - Évelyn T Barrilli
- Federal University of Fronteira Sul - Campus Chapecó - SC, Research Group of Enzymatic and Microbiological Processes, Brazil
| | - Diego Alex Mayer
- Federal University of Santa Catarina, Department of Chemical and Food Engineering, Brazil
| | | | - Carlos A Rosa
- Federal University of Minas Gerais, Department of Microbiology, Brazil
| | - Boris U Stambuk
- Federal University of Santa Catarina, Department of Biochemistry, Brazil
| | - Sérgio L Alves
- Federal University of Fronteira Sul - Campus Chapecó - SC, Research Group of Enzymatic and Microbiological Processes, Brazil
| | - Alexsandra Valério
- Federal University of Santa Catarina, Department of Chemical and Food Engineering, Brazil
| | - Débora de Oliveira
- Federal University of Santa Catarina, Department of Chemical and Food Engineering, Brazil
| | - Helen Treichel
- Federal University of Fronteira Sul - Campus Erechim - RS, Laboratory of Microbiology and Bioprocesses, Brazil.
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23
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Aguilar-Reynosa A, Romaní A, Rodríguez-Jasso RM, Aguilar CN, Garrote G, Ruiz HA. Comparison of microwave and conduction-convection heating autohydrolysis pretreatment for bioethanol production. BIORESOURCE TECHNOLOGY 2017; 243:273-283. [PMID: 28675841 DOI: 10.1016/j.biortech.2017.06.096] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/16/2017] [Accepted: 06/17/2017] [Indexed: 05/15/2023]
Abstract
This work describes the application of two forms of heating for autohydrolysis pretreatment on isothermal regimen: conduction-convection heating and microwave heating processing using corn stover as raw material for bioethanol production. Pretreatments were performed using different operational conditions: residence time (10-50 min) and temperature (160-200°C) for both pretreatments. Subsequently, the susceptibility of pretreated solids was studied using low enzyme loads, and high substrate loads. The highest conversion was 95.1% for microwave pretreated solids. Also solids pretreated by microwave heating processing showed better ethanol conversion in simultaneous saccharification and fermentation process (92% corresponding to 33.8g/L). Therefore, microwave heating processing is a promising technology in the pretreatment of lignocellulosic materials.
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Affiliation(s)
- Alejandra Aguilar-Reynosa
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico; Cluster of Bioalcohols, Mexican Centre for Innovation in Bioenergy (Cemie-Bio), Mexico
| | - Aloia Romaní
- CEB-Centre of Biological Engineering, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal
| | - Rosa M Rodríguez-Jasso
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico; Cluster of Bioalcohols, Mexican Centre for Innovation in Bioenergy (Cemie-Bio), Mexico
| | - Cristóbal N Aguilar
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Gil Garrote
- Department of Chemical Engineering, Faculty of Science, University of Vigo (Campus Ourense), As Lagoas, 32004 Ourense, Spain; CITI (Centro de Investigación, Transferencia e Innovación), University of Vigo, Tecnopole, San Ciprián das Viñas, 32901 Ourense, Spain
| | - Héctor A Ruiz
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico; Cluster of Bioalcohols, Mexican Centre for Innovation in Bioenergy (Cemie-Bio), Mexico.
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24
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Andrade LP, Crespim E, de Oliveira N, de Campos RC, Teodoro JC, Galvão CMA, Maciel Filho R. Influence of sugarcane bagasse variability on sugar recovery for cellulosic ethanol production. BIORESOURCE TECHNOLOGY 2017; 241:75-81. [PMID: 28550776 DOI: 10.1016/j.biortech.2017.05.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 05/12/2017] [Accepted: 05/13/2017] [Indexed: 06/07/2023]
Abstract
In the context of cellulosic ethanol production, special attention must be given to the raw material, as it affects final product yield. As observed for sugarcane, bagasse variations may derive from several elements, for instance edaphoclimatic factors, seasonality, maturation stage and harvesting techniques. Therefore, in the present work, to investigate the impact of raw material characteristics on process performance, sugarcane bagasse from four harvests from October/2010 to October/2011 was pretreated by steam explosion and had its soluble and insoluble solids contents measured, following enzymatic hydrolysis to assess glucan conversion. As confirmed by ANOVA, glucose concentration was related to the solids content in the reactor, whereas glucan conversion was related to the enzymatic load. Variations in raw material composition were indeed observed to significantly interfere in the final sugar recovery, probably due to the increase in the impurities observed as a result of the type of harvest performed in 2011.
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Affiliation(s)
- Liliane Pires Andrade
- University of Campinas (UNICAMP), School of Chemical Engineering, CEP 13083-970 Campinas, São Paulo, Brazil; São Paulo State University (UNESP), IBILCE, Laboratory of Biochemistry and Applied Microbiology, CEP 15054-000 São José do Rio Preto, São Paulo, Brazil.
| | - Elaine Crespim
- Independent Researcher, CEP 13425-020 Piracicaba, São Paulo, Brazil
| | - Nilton de Oliveira
- Sugarcane Technology Center (CTC), CEP 13400-160 Piracicaba, São Paulo, Brazil
| | | | | | | | - Rubens Maciel Filho
- University of Campinas (UNICAMP), School of Chemical Engineering, CEP 13083-970 Campinas, São Paulo, Brazil
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25
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Qiu J, Ma L, Shen F, Yang G, Zhang Y, Deng S, Zhang J, Zeng Y, Hu Y. Pretreating wheat straw by phosphoric acid plus hydrogen peroxide for enzymatic saccharification and ethanol production at high solid loading. BIORESOURCE TECHNOLOGY 2017; 238:174-181. [PMID: 28433905 DOI: 10.1016/j.biortech.2017.04.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 04/09/2017] [Accepted: 04/10/2017] [Indexed: 05/26/2023]
Abstract
Wheat straw was pretreated by phosphoric acid plus hydrogen peroxide (PHP) for enzymatic hydrolysis and ethanol fermentation at high solid loadings. Results indicated solid loading could reach 20% with 77.4% cellulose-glucose conversion and glucose concentration of 164.9g/L in hydrolysate, it even was promoted to 25% with only 3.4% decrease on cellulose-glucose conversion as the pretreated-wheat straw was dewatered by air-drying. 72.9% cellulose-glucose conversion still was achieved as the minimized enzyme input of 20mg protein/g cellulose was employed for hydrolysis at 20% solid loading. In the corresponding conditions, 100g wheat straw can yield 11.2g ethanol with concentration of 71.2g/L by simultaneous saccharification and fermentation. Thus, PHP-pretreatment benefitted the glucose or ethanol yield at high solid loadings with lower enzyme input. Additionally, decreases on the maximal cellulase adsorption and the direct-orange/direct-blue indicated drying the PHP-pretreated substrates negatively affected the hydrolysis due to the shrinkage of cellulase-size-accommodable pores.
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Affiliation(s)
- Jingwen Qiu
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Lunjie Ma
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Fei Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.
| | - Gang Yang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Yanzong Zhang
- Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Shihuai Deng
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Jing Zhang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Yongmei Zeng
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Yaodong Hu
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
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26
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Liu Y, Zhang B, Wang W, He M, Xu J, Yuan Z. Evaluation of the solvent water effect on high solids saccharification of alkali-pretreated sugarcane bagasse. BIORESOURCE TECHNOLOGY 2017; 235:12-17. [PMID: 28351727 DOI: 10.1016/j.biortech.2017.03.088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/13/2017] [Accepted: 03/14/2017] [Indexed: 06/06/2023]
Abstract
Solvent water is an essential factor for high solids enzymatic hydrolysis. To investigate its effect on substrate conversion efficiency in high solids hydrolysis of sugarcane bagasse (SCB), oleyl alcohol was used to partially substitute the solvent water. The results in batch hydrolysis tests in which diverse ratio of solvent water was replaced found that the majority of the substrate was insoluble. Then high solids fed-batch hydrolysis with the reaction solution mixed with solvent water and oleyl alcohol in the ratio of 3:1 (solids concentration correspond to 24% (w/v)) was carried out at the final real solids loading of 18% (w/v). The produced sugars were found to be less than pure water system, which indicated that water played a significant role in high solids hydrolysis process, and solids effect was related to the solvent water content.
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Affiliation(s)
- Yunyun Liu
- College of Mechanical and Electrical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China; Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Bin Zhang
- College of Mechanical and Electrical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Wen Wang
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Minchao He
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Jingliang Xu
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Zhenhong Yuan
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
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27
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Zhang H, Xu Y, Yu S. Co-production of functional xylooligosaccharides and fermentable sugars from corncob with effective acetic acid prehydrolysis. BIORESOURCE TECHNOLOGY 2017; 234:343-349. [PMID: 28340439 DOI: 10.1016/j.biortech.2017.02.094] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 05/11/2023]
Abstract
A novel and green approach for the coproduction of xylooligosaccharides (XOS), in terms of a series of oligosaccharide components from xylobiose to xylohexose, and fermentable sugars was developed using the prehydrolysis of acetic acid that was fully recyclable and environmentally friendly, followed by enzymatic hydrolysis. Compared to hydrochloric acid and sulfuric acid, acetic acid hydrolysis provided the highest XOS yield of 45.91% and the highest enzymatic hydrolysis yield. More than 91% conversion of cellulose was achieved in a batch-hydrolysis using only a cellulase loading of 20FPU/g cellulose and even a high solid loading of 20% without any special strategies. The acetic acid pretreated corncob should be washed adequately before saccharification to achieve complete hydrolysis. Consequently, a mass balance analysis showed that 139.8g XOS, 328.1g glucose, 25.1g cellobiose, and 147.8g xylose were produced from 1000g oven dried raw corncob.
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Affiliation(s)
- Hongyu Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, People's Republic of China; College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, People's Republic of China
| | - Yong Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, People's Republic of China; College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, People's Republic of China.
| | - Shiyuan Yu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, People's Republic of China; College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, People's Republic of China
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28
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Chen HZ, Liu ZH. Enzymatic hydrolysis of lignocellulosic biomass from low to high solids loading. Eng Life Sci 2016; 17:489-499. [PMID: 32624794 DOI: 10.1002/elsc.201600102] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 09/24/2016] [Accepted: 10/20/2016] [Indexed: 02/01/2023] Open
Abstract
Solid state enzymatic hydrolysis (SSEH) has many advantages, such as higher sugar concentration, lower operating costs, and less energy input. It should be a potential approach for the industrial application of lignocellulosic ethanol. The purpose of this work is to review the enzymatic hydrolysis of lignocellulosic biomass from low to high solids loading and introduce its both challenges and perspectives. The limitations of SSEH, including inhibition effects, water constraint, and rheology characteristic, are summarized firstly. Various strategies for overcoming these limitations are proposed correspondingly. Fed batch process and its feeding strategy to improve the SSEH efficiency are then discussed. Finally, several intensification methods, hydrolysis reactor, and pilot- and demonstration-scale operations of SSEH are described. In-depth analysis of main limitations and development of novel intensification methods and reactors should provide an effective way to achieve large-scale implementation of SSEH.
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Affiliation(s)
- Hong-Zhang Chen
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering Chinese Academy of Sciences Beijing China
| | - Zhi-Hua Liu
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering Chinese Academy of Sciences Beijing China.,University of Chinese Academy of Sciences Beijing China
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29
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Li P, Cai D, Zhang C, Li S, Qin P, Chen C, Wang Y, Wang Z. Comparison of two-stage acid-alkali and alkali-acid pretreatments on enzymatic saccharification ability of the sweet sorghum fiber and their physicochemical characterizations. BIORESOURCE TECHNOLOGY 2016; 221:636-644. [PMID: 27693729 DOI: 10.1016/j.biortech.2016.09.075] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 09/15/2016] [Accepted: 09/16/2016] [Indexed: 06/06/2023]
Abstract
Two-stage acid/alkali pretreatment was used to enhance the saccharification efficiency of sweet sorghum fiber. The physicochemical characterizations of the pretreated fibers were evaluated by SEM, FTIR and XRD. The acid and alkali sequence in the two-stage pretreatment process was compared, and their dosage was optimized. The results indicated that the two-stage pretreatment showed better saccharification performance when compared with conventional single stage pretreatment. And compared with the acid-alkali sequence, the alkali-acid sequence achieved higher glucose yield (0.23g·g-1) under the optimized conditions, which was 1.64 and 1.21 times higher than that of the single stage and the acid-alkali pretreatments, respectively. Overall, the two-stage pretreatment process is a promising approach to achieve high fermentable glucose conversion rate of cellulosic material.
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Affiliation(s)
- Ping Li
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Di Cai
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Changwei Zhang
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Shufeng Li
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Peiyong Qin
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Changjing Chen
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yong Wang
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Zheng Wang
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
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Sant’Ana da Silva A, Fernandes de Souza M, Ballesteros I, Manzanares P, Ballesteros M, P. S. Bon E. High-solids content enzymatic hydrolysis of hydrothermally pretreated sugarcane bagasse using a laboratory-made enzyme blend and commercial preparations. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.07.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Chiarello LM, Ramos CEA, Neves PV, Ramos LP. Production of cellulosic ethanol from steam-exploded Eucalyptus urograndis and sugarcane bagasse at high total solids and low enzyme loadings. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40508-016-0059-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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32
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Bechara R, Gomez A, Saint-Antonin V, Schweitzer JM, Maréchal F. Methodology for the optimal design of an integrated first and second generation ethanol production plant combined with power cogeneration. BIORESOURCE TECHNOLOGY 2016; 214:441-449. [PMID: 27160954 DOI: 10.1016/j.biortech.2016.04.130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/27/2016] [Accepted: 04/28/2016] [Indexed: 06/05/2023]
Abstract
The application of methodologies for the optimal design of integrated processes has seen increased interest in literature. This article builds on previous works and applies a systematic methodology to an integrated first and second generation ethanol production plant with power cogeneration. The methodology breaks into process simulation, heat integration, thermo-economic evaluation, exergy efficiency vs. capital costs, multi-variable, evolutionary optimization, and process selection via profitability maximization. Optimization generated Pareto solutions with exergy efficiency ranging between 39.2% and 44.4% and capital costs from 210M$ to 390M$. The Net Present Value was positive for only two scenarios and for low efficiency, low hydrolysis points. The minimum cellulosic ethanol selling price was sought to obtain a maximum NPV of zero for high efficiency, high hydrolysis alternatives. The obtained optimal configuration presented maximum exergy efficiency, hydrolyzed bagasse fraction, capital costs and ethanol production rate, and minimum cooling water consumption and power production rate.
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Affiliation(s)
- Rami Bechara
- Process Modeling and Design, IFPEN, Insitut Français du Pétrole et des Energies Nouvelles, Rond Point de l'Echangeur de Solaize, BP3, 69360 Solaize, France.
| | - Adrien Gomez
- Process Modeling and Design, IFPEN, Insitut Français du Pétrole et des Energies Nouvelles, Rond Point de l'Echangeur de Solaize, BP3, 69360 Solaize, France.
| | - Valérie Saint-Antonin
- Economics and Information Watch and Management, IFPEN, 1-4 Avenue du Bois Préau, 92852 Rueil-Malmaison, France.
| | - Jean-Marc Schweitzer
- Process Modeling and Design, IFPEN, Insitut Français du Pétrole et des Energies Nouvelles, Rond Point de l'Echangeur de Solaize, BP3, 69360 Solaize, France.
| | - François Maréchal
- Industrial Process and Energy Systems Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL Valais Wallis, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
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33
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Neves PV, Pitarelo AP, Ramos LP. Production of cellulosic ethanol from sugarcane bagasse by steam explosion: Effect of extractives content, acid catalysis and different fermentation technologies. BIORESOURCE TECHNOLOGY 2016; 208:184-194. [PMID: 26943936 DOI: 10.1016/j.biortech.2016.02.085] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 06/05/2023]
Abstract
The production of cellulosic ethanol was carried out using samples of native (NCB) and ethanol-extracted (EECB) sugarcane bagasse. Autohydrolysis (AH) exhibited the best glucose recovery from both samples, compared to the use of both H3PO4 and H2SO4 catalysis at the same pretreatment time and temperature. All water-insoluble steam-exploded materials (SEB-WI) resulted in high glucose yields by enzymatic hydrolysis. SHF (separate hydrolysis and fermentation) gave ethanol yields higher than those obtained by SSF (simultaneous hydrolysis and fermentation) and pSSF (pre-hydrolysis followed by SSF). For instance, AH gave 25, 18 and 16 g L(-1) of ethanol by SHF, SSF and pSSF, respectively. However, when the total processing time was taken into account, pSSF provided the best overall ethanol volumetric productivity of 0.58 g L(-1) h(-1). Also, the removal of ethanol-extractable materials from cane bagasse had no influence on the cellulosic ethanol production of SEB-WI, regardless of the fermentation strategy used for conversion.
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Affiliation(s)
- P V Neves
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil
| | - A P Pitarelo
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil; Sugarcane Technology Center (CTC), Piracicaba, SP, Brazil
| | - L P Ramos
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil.
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Schneider WDH, Gonçalves TA, Uchima CA, Couger MB, Prade R, Squina FM, Dillon AJP, Camassola M. Penicillium echinulatum secretome analysis reveals the fungi potential for degradation of lignocellulosic biomass. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:66. [PMID: 26989443 PMCID: PMC4794826 DOI: 10.1186/s13068-016-0476-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 03/02/2016] [Indexed: 05/25/2023]
Abstract
BACKGROUND The enzymatic degradation of lignocellulosic materials by fungal enzyme systems has been extensively studied due to its effectiveness in the liberation of fermentable sugars for bioethanol production. Recently, variants of the fungus Penicillium echinulatum have been described as a great producer of cellulases and considered a promising strain for the bioethanol industry. RESULTS Penicillium echinulatum, wild-type 2HH and its mutant strain S1M29, were grown on four different carbon sources: cellulose, sugar cane bagasse pretreated by steam explosion (SCB), glucose, and glycerol for 120 h. Samples collected at 24, 96, and 120 h were used for enzymatic measurement, and the 96-h one was also used for secretome analysis by 1D-PAGE LC-MS/MS. A total of 165 proteins were identified, and more than one-third of these proteins belong to CAZy families. Glycosyl hydrolases (GH) are the most abundant group, being represented in larger quantities by GH3, 5, 17, 43, and 72. Cellobiohydrolases, endoglucanases, β-glycosidases, xylanases, β-xylosidases, and mannanases were found, and in minor quantities, pectinases, ligninases, and amylases were also found. Swollenin and esterases were also identified. CONCLUSIONS Our study revealed differences in the two strains of P. echinulatum in several aspects in which the mutation improved the production of enzymes related to lignocellulosic biomass deconstruction. Considering the spectral counting analysis, the mutant strain S1M29 was more efficient in the production of enzymes involved in cellulose and hemicellulose degradation, despite having a nearly identical CAZy enzymatic repertoire. Moreover, S1M29 secretes more quantities of protein on SCB than on cellulose, relevant information when considering the production of cellulases using raw materials at low cost. Glucose, and especially glycerol, were used mainly for the production of amylases and ligninases.
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Affiliation(s)
- Willian Daniel Hahn Schneider
- />Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Francisco Getúlio Vargas Street 1130, Caxias Do Sul, RS 95070-560 Brazil
| | - Thiago Augusto Gonçalves
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Giuseppe Maximo Scolfaro 10.000, Campinas, São Paulo 13083-970 Brazil
- />Department of Biochemistry, Institute of Biology, State University of Campinas (UNICAMP), Campinas, São Paulo Brazil
| | - Cristiane Akemi Uchima
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Giuseppe Maximo Scolfaro 10.000, Campinas, São Paulo 13083-970 Brazil
| | - Matthew Brian Couger
- />Department of Microbiology and Molecular Genetics, Oklahoma State University, 1110 South Innovation Way, Stillwater, OK 74078 USA
| | - Rolf Prade
- />Department of Microbiology and Molecular Genetics, Oklahoma State University, 1110 South Innovation Way, Stillwater, OK 74078 USA
| | - Fabio Marcio Squina
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Giuseppe Maximo Scolfaro 10.000, Campinas, São Paulo 13083-970 Brazil
| | - Aldo José Pinheiro Dillon
- />Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Francisco Getúlio Vargas Street 1130, Caxias Do Sul, RS 95070-560 Brazil
| | - Marli Camassola
- />Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Francisco Getúlio Vargas Street 1130, Caxias Do Sul, RS 95070-560 Brazil
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35
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Paixão SM, Ladeira SA, Silva TP, Arez BF, Roseiro JC, Martins MLL, Alves L. Sugarcane bagasse delignification with potassium hydroxide for enhanced enzymatic hydrolysis. RSC Adv 2016. [DOI: 10.1039/c5ra14908h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Alkali pretreatment of sugarcane bagasse biomass was shown to be effective for producing sugar-rich hydrolysates for biotechnological applications.
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Affiliation(s)
- S. M. Paixão
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - S. A. Ladeira
- UENF – Universidade Estadual do Norte Fluminense Darcy Ribeiro
- LTA-CCTA
- RJ
- Brazil
| | - T. P. Silva
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - B. F. Arez
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - J. C. Roseiro
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
| | - M. L. L. Martins
- UENF – Universidade Estadual do Norte Fluminense Darcy Ribeiro
- LTA-CCTA
- RJ
- Brazil
| | - L. Alves
- LNEG – Laboratório Nacional de Energia e Geologia, IP
- Unidade de Bioenergia
- 1649-038 Lisboa
- Portugal
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36
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Principles and Challenges Involved in the Enzymatic Hydrolysis of Cellulosic Materials at High Total Solids. GREEN FUELS TECHNOLOGY 2016. [DOI: 10.1007/978-3-319-30205-8_7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Cotana F, Buratti C, Barbanera M, Lascaro E. Optimization of the steam explosion and enzymatic hydrolysis for sugars production from oak woods. BIORESOURCE TECHNOLOGY 2015; 198:470-7. [PMID: 26421610 DOI: 10.1016/j.biortech.2015.09.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/07/2015] [Accepted: 09/08/2015] [Indexed: 05/15/2023]
Abstract
Fermentable sugars production from three kind of steam-exploded oak wood was optimized by Response Surface Methodology (RSM), using the severity factor (R0), the pretreated total solids (TS%) and the enzyme loading (EL%) as variables of a central composite design. A total of 17 experiments for each biomass were carried out. The optimal conditions established with RSM were: severity, 4.46 for holm, 4.03 for turkey oak and 3.92 for downey oak; total solids, 5.4% for holm, 5.0% for turkey oak and 12.7% for downey oak; and enzyme concentration, 9.6% for holm, 15.0% for turkey oak and 15.0% for downey oak. Under these conditions, the model predicted an overall sugar yield of 67.1% for holm, 79.9% for turkey oak and 68.4% for downey oak. The results of the confirmation experiments under optimal conditions agreed well with model predictions. Oak wood species may be a good feedstock for the production of reducing sugars.
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Affiliation(s)
- F Cotana
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy
| | - C Buratti
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy.
| | - M Barbanera
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy
| | - E Lascaro
- Biomass Research Centre, Department of Engineering, Via G. Duranti 67, 06125 Perugia, Italy
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38
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Scholl AL, Menegol D, Pitarelo AP, Fontana RC, Zandoná Filho A, Ramos LP, Dillon AJP, Camassola M. Ethanol production from sugars obtained during enzymatic hydrolysis of elephant grass (Pennisetum purpureum, Schum.) pretreated by steam explosion. BIORESOURCE TECHNOLOGY 2015; 192:228-37. [PMID: 26038327 DOI: 10.1016/j.biortech.2015.05.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 05/18/2015] [Accepted: 05/19/2015] [Indexed: 05/11/2023]
Abstract
In this work, steam explosion was used a pretreatment method to improve the conversion of elephant grass (Pennisetum purpureum) to cellulosic ethanol. This way, enzymatic hydrolysis of vaccum-drained and water-washed steam-treated substrates was carried out with Penicillium echinulatum enzymes while Saccharomyces cerevisiae CAT-1 was used for fermentation. After 48 h of hydrolysis, the highest yield of reducing sugars was obtained from vaccum-drained steam-treated substrates that were produced after 10 min at 200 °C (863.42 ± 62.52 mg/g). However, the highest glucose yield was derived from water-washed steam-treated substrates that were produced after 10 min at 190 °C (248.34 ± 6.27 mg/g) and 200 °C (246.00 ± 9.60 mg/g). Nevertheless, the highest ethanol production was obtained from water-washed steam-treated substrates that were produced after 6 min at 200 °C. These data revealed that water washing is a critical step for ethanol production from steam-treated elephant grass and that pretreatment generates a great deal of water soluble inhibitory compounds for hydrolysis and fermentation, which were partly characterized as part of this study.
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Affiliation(s)
- Angélica Luisi Scholl
- University of Caxias do Sul, Enzyme and Biomass Laboratory, 1130 Francisco Vargas Street, Caxias do Sul, RS 95070-560, Brazil
| | - Daiane Menegol
- University of Caxias do Sul, Enzyme and Biomass Laboratory, 1130 Francisco Vargas Street, Caxias do Sul, RS 95070-560, Brazil
| | - Ana Paula Pitarelo
- Federal University of Paraná, Department of Chemistry, Research Center in Applied Chemistry (CEPESQ), P.O. Box 19032, Curitiba, PR 81531-980, Brazil; Cane Technology Center (CTC), Fazenda Santo Antônio, Piracicaba, SP 13400-907, Brazil.
| | - Roselei Claudete Fontana
- University of Caxias do Sul, Enzyme and Biomass Laboratory, 1130 Francisco Vargas Street, Caxias do Sul, RS 95070-560, Brazil
| | - Arion Zandoná Filho
- Federal University of Paraná, Department of Chemistry, Research Center in Applied Chemistry (CEPESQ), P.O. Box 19032, Curitiba, PR 81531-980, Brazil
| | - Luiz Pereira Ramos
- Federal University of Paraná, Department of Chemistry, Research Center in Applied Chemistry (CEPESQ), P.O. Box 19032, Curitiba, PR 81531-980, Brazil; INCT in Energy and Environment (INCT E&A), Federal University of Paraná, Department of Chemistry, Curitiba, PR 81531-980, Brazil.
| | - Aldo José Pinheiro Dillon
- University of Caxias do Sul, Enzyme and Biomass Laboratory, 1130 Francisco Vargas Street, Caxias do Sul, RS 95070-560, Brazil
| | - Marli Camassola
- University of Caxias do Sul, Enzyme and Biomass Laboratory, 1130 Francisco Vargas Street, Caxias do Sul, RS 95070-560, Brazil.
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Silveira MHL, Vanelli BA, Corazza ML, Ramos LP. Supercritical carbon dioxide combined with 1-butyl-3-methylimidazolium acetate and ethanol for the pretreatment and enzymatic hydrolysis of sugarcane bagasse. BIORESOURCE TECHNOLOGY 2015; 192:389-396. [PMID: 26056781 DOI: 10.1016/j.biortech.2015.05.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 05/12/2015] [Accepted: 05/13/2015] [Indexed: 06/04/2023]
Abstract
The use of green solvents for the partial delignification of milled sugarcane bagasse (1mm particle size) and for the enhancement of its susceptibility to enzymatic hydrolysis was demonstrated. The experiments were carried out for 2h using 40 g of supercritical carbon dioxide combined with 1-butyl-3-methylimidazolium acetate and 15.8 g of ethanol. The effects of temperature (110-180 °C), pressure (195-250 bar) and IL-to-bagasse mass ratio (0:1-1:1) were investigated through a factorial design in which the response variables were the extent of delignification and both anhydroglucose and anhydroxylose contents in the pretreated materials. The highest delignification degree (41%) led to the best substrate for hydrolysis, giving a 70.7 wt% glucose yield after 12h using 5 wt% and Cellic CTec2® (Novozymes) at 10 mg g(-1) total solids. Hence, excellent substrates for hydrolysis were produced with a minimal IL requirement, which could be recovered by ethanol washing for its downstream processing and reuse.
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Affiliation(s)
- Marcos Henrique Luciano Silveira
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná (UFPR), P.O. Box 19032, Curitiba, PR 81531-980, Brazil
| | - Bruno Angelo Vanelli
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná (UFPR), P.O. Box 19032, Curitiba, PR 81531-980, Brazil
| | | | - Luiz Pereira Ramos
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná (UFPR), P.O. Box 19032, Curitiba, PR 81531-980, Brazil; INCT in Energy and Environment (INCT E&A), UFPR, Curitiba, PR 81531-980, Brazil
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40
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Bussamra BC, Freitas S, Costa ACD. Improvement on sugar cane bagasse hydrolysis using enzymatic mixture designed cocktail. BIORESOURCE TECHNOLOGY 2015; 187:173-181. [PMID: 25846188 DOI: 10.1016/j.biortech.2015.03.117] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/23/2015] [Accepted: 03/25/2015] [Indexed: 05/07/2023]
Abstract
The aim of this work was to study cocktail supplementation for sugar cane bagasse hydrolysis, where the enzymes were provided from both commercial source and microorganism cultivation (Trichoderma reesei and genetically modified Escherichia coli), followed by purification. Experimental simplex lattice mixture design was performed to optimize the enzymatic proportion. The response was evaluated through hydrolysis microassays validated here. The optimized enzyme mixture, comprised of T. reesei fraction (80%), endoglucanase (10%) and β-glucosidase (10%), converted, theoretically, 72% of cellulose present in hydrothermally pretreated bagasse, whereas commercial Celluclast 1.5L converts 49.11%±0.49. Thus, a rational enzyme mixture designed by using synergism concept and statistical analysis was capable of improving biomass saccharification.
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Affiliation(s)
- Bianca Consorti Bussamra
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Center for Research in Energy and Materials, Rua Giuseppe Máximo Scolfaro, 10000, Post Code: 6192, Zip Code: 13083-970, Campinas, São Paulo, Brazil.
| | - Sindelia Freitas
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Center for Research in Energy and Materials, Rua Giuseppe Máximo Scolfaro, 10000, Post Code: 6192, Zip Code: 13083-970, Campinas, São Paulo, Brazil
| | - Aline Carvalho da Costa
- School of Chemical Engineering, University of Campinas (Unicamp), Av. Albert Einstein, 500, Post Code: 6066, Zip Code: 13083-852, Campinas, São Paulo, Brazil
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