1
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Ethanol organosolv pretreatment of sugarcane bagasse assisted by organic acids and supercritical carbon dioxide. Carbohydr Polym 2022; 300:120263. [DOI: 10.1016/j.carbpol.2022.120263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/09/2022] [Accepted: 10/21/2022] [Indexed: 11/24/2022]
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2
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Guiao KS, Tzoganakis C, Mekonnen TH. Green mechano-chemical processing of lignocellulosic biomass for lignin recovery. CHEMOSPHERE 2022; 293:133647. [PMID: 35063558 DOI: 10.1016/j.chemosphere.2022.133647] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/05/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Lignin extraction from biomass is heavily dependent on chemical processes that are harmful to the environment and the quality of the recovered lignin. Ionic liquid solvents are some of the latest solutions in green processing; however, their implementation for lignin recovery is limited by their high cost, typically high loadings requirements, and long processing times. To overcome these issues, in this study, high loadings of mixed hardwood flour (MHF) were processed with 1-butyl-3-methylimidazolium chloride (BmimCl) in a batch mixer. The rheological behaviour of the biomass and ionic liquid mixture was studied. The mixture had a high complex viscosity (approx. 107 Pa s) at low shear rates and displayed pronounced shear thinning behavior at 50 wt% MHF loading. A 22 factorial design was also implemented to study the effects of MHF solid loading amount and residence time on lignin extraction yield. A maximum yield of 36.6% was obtained at the maximum solid loading amount and residence time (50 wt% and 45 min, respectively). The extracted lignin samples were also characterized in comparison with commercial Kraft lignin and lignosulfonate. The novelty of this study is the successful lignin extraction at high solid loadings and shorter residence times compared to previous biomass pre-treatments with ionic liquids that employs low solid loading and long processing times.
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Affiliation(s)
- Karelle S Guiao
- Department of Chemical Engineering, Institute of Polymer Research, Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada
| | - Costas Tzoganakis
- Department of Chemical Engineering, Institute of Polymer Research, Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada
| | - Tizazu H Mekonnen
- Department of Chemical Engineering, Institute of Polymer Research, Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada.
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3
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Badgujar KC, Dange R, Bhanage BM. Recent advances of use of the supercritical carbon dioxide for the biomass pre-treatment and extraction: A mini-review. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Kim M, Jee SC, Sung JS, Kadam AA. Supermagnetic Sugarcane Bagasse Hydrochar for Enhanced Osteoconduction in Human Adipose Tissue-Derived Mesenchymal Stem Cells. NANOMATERIALS 2020; 10:nano10091793. [PMID: 32916934 PMCID: PMC7557583 DOI: 10.3390/nano10091793] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/04/2020] [Accepted: 09/08/2020] [Indexed: 12/21/2022]
Abstract
Hydrothermally carbonized sugarcane bagasse (SCB) has exceptional surface properties. Looking at the huge amount of SCB produced, its biocompatible nature, cheap-cost for carbonization, and its easy functionalization can give impeccable nano-biomaterials for tissue engineering applications. Herein, sugarcane bagasse was converted into hydrochar (SCB-H) by hydrothermal carbonation. The SCB-H produced was further modified with iron oxide (Fe3O4) nanoparticles (denoted as SCB-H@Fe3O4). Facile synthesized nano-bio-composites were characterized by SEM, HR-TEM, XRD, FT-IR, XPS, TGA, and VSM analysis. Bare Fe3O4 nanoparticles (NPs), SCB-H, and SCB-H@Fe3O4 were tested for cytocompatibility and osteoconduction enhancement of human adipose tissue-derived mesenchymal stem cells (hADMSCs). The results confirmed the cytocompatible and nontoxic nature of SCB-H@Fe3O4. SCB-H did not show enhancement in osteoconduction, whilst on the other hand, Fe3O4 NPs exhibited a 0.5-fold increase in the osteoconduction of hADMSCs. However, SCB-H@Fe3O4 demonstrated an excellent enhancement in osteoconduction of a 3-fold increase over the control, and a 2.5-fold increase over the bare Fe3O4 NPs. Correspondingly, the expression patterns assessment of osteoconduction marker genes (ALP, OCN, and RUNX2) confirmed the osteoconductive enhancement by SCB-H@Fe3O4. In the proposed mechanism, the surface of SCB-H@Fe3O4 might provide a unique topology, and anchoring to receptors of hADMSCs leads to accelerated osteogenesis. In conclusion, agriculture waste-derived sustainable materials like “SCB-H@Fe3O44” can be potentially applied in highly valued medicinal applications of stem cell differentiation.
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Affiliation(s)
- Min Kim
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Korea; (M.K.); (S.-C.J.); (J.-S.S.)
| | - Seung-Cheol Jee
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Korea; (M.K.); (S.-C.J.); (J.-S.S.)
| | - Jung-Suk Sung
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Korea; (M.K.); (S.-C.J.); (J.-S.S.)
| | - Avinash A. Kadam
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyonggido 10326, Korea
- Correspondence: or ; Tel.: +82-31-961-5616; Fax: 82-31-961-5108
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Escobar ELN, da Silva TA, Pirich CL, Corazza ML, Pereira Ramos L. Supercritical Fluids: A Promising Technique for Biomass Pretreatment and Fractionation. Front Bioeng Biotechnol 2020; 8:252. [PMID: 32391337 PMCID: PMC7191036 DOI: 10.3389/fbioe.2020.00252] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/11/2020] [Indexed: 11/17/2022] Open
Abstract
Lignocellulosic biomasses are primarily composed of cellulose, hemicelluloses and lignin and these biopolymers are bonded together in a heterogeneous matrix that is highly recalcitrant to chemical or biological conversion processes. Thus, an efficient pretreatment technique must be selected and applied to this type of biomass in order to facilitate its utilization in biorefineries. Classical pretreatment methods tend to operate under severe conditions, leading to sugar losses by dehydration and to the release of inhibitory compounds such as furfural (2-furaldehyde), 5-hydroxy-2-methylfurfural (5-HMF), and organic acids. By contrast, supercritical fluids can pretreat lignocellulosic materials under relatively mild pretreatment conditions, resulting in high sugar yields, low production of fermentation inhibitors and high susceptibilities to enzymatic hydrolysis while reducing the consumption of chemicals, including solvents, reagents, and catalysts. This work presents a review of biomass pretreatment technologies, aiming to deliver a state-of-art compilation of methods and results with emphasis on supercritical processes.
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Affiliation(s)
- Estephanie Laura Nottar Escobar
- Applied Kinetics and Thermodynamics Laboratory, Department of Chemical Engineering, Federal University of Paraná, Curitiba, Brazil
| | - Thiago Alessandre da Silva
- Department of Chemistry, Research Center in Applied Chemistry, Federal University of Paraná, Curitiba, Brazil
| | - Cleverton Luiz Pirich
- Department of Chemistry, Research Center in Applied Chemistry, Federal University of Paraná, Curitiba, Brazil
| | - Marcos Lúcio Corazza
- Applied Kinetics and Thermodynamics Laboratory, Department of Chemical Engineering, Federal University of Paraná, Curitiba, Brazil
| | - Luiz Pereira Ramos
- Department of Chemistry, Research Center in Applied Chemistry, Federal University of Paraná, Curitiba, Brazil
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6
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Vieira S, Barros MV, Sydney ACN, Piekarski CM, de Francisco AC, Vandenberghe LPDS, Sydney EB. Sustainability of sugarcane lignocellulosic biomass pretreatment for the production of bioethanol. BIORESOURCE TECHNOLOGY 2020; 299:122635. [PMID: 31882200 DOI: 10.1016/j.biortech.2019.122635] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/12/2019] [Accepted: 12/15/2019] [Indexed: 05/12/2023]
Abstract
The sustainability of a biofuel is severely affected by the technological route of its production. Chemical pretreatment can be considered the traditional method of decomposition of the lignocellulose into its mono and oligomeric units, which can be further bioconverted to ethanol. The evaluation of the recent advances in chemical pretreatments of sugarcane bagasse, especially diluted acids, alkaline, organosolv and ionic liquids, identified the critical points for sustainability. In this context, chemicals recovery and reutilization or their substitution by green solvents, heat and electricity generation through bioenergy, reutilization of water from evaporators, vinasse concentration and the upgrading of lignin were discussed as strategic routes for developing sustainable chemical-based lignocellulose pretreatment. The advances in the technologies that allow greater fractionation of lignocellulosic biomass should be focused on the minimization of the use of natural resources, effluent generation and energy expenditure.
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Affiliation(s)
- Sabrina Vieira
- Universidade Tecnológica Federal do Paraná UTFPR - Campus Ponta Grossa, Department of Bioprocess Engineering and Biotechnology, 84016-210 Ponta Grossa, Paraná, Brazil
| | - Murillo Vetroni Barros
- Universidade Tecnológica Federal do Paraná UTFPR - Campus Ponta Grossa, Sustainable Production Systems Laboratory (LESP), 84016-210 Ponta Grossa, Paraná, Brazil
| | - Alessandra Cristine Novak Sydney
- Universidade Tecnológica Federal do Paraná UTFPR - Campus Ponta Grossa, Department of Bioprocess Engineering and Biotechnology, 84016-210 Ponta Grossa, Paraná, Brazil
| | - Cassiano Moro Piekarski
- Universidade Tecnológica Federal do Paraná UTFPR - Campus Ponta Grossa, Sustainable Production Systems Laboratory (LESP), 84016-210 Ponta Grossa, Paraná, Brazil
| | - Antônio Carlos de Francisco
- Universidade Tecnológica Federal do Paraná UTFPR - Campus Ponta Grossa, Sustainable Production Systems Laboratory (LESP), 84016-210 Ponta Grossa, Paraná, Brazil
| | - Luciana Porto de Souza Vandenberghe
- Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil
| | - Eduardo Bittencourt Sydney
- Universidade Tecnológica Federal do Paraná UTFPR - Campus Ponta Grossa, Department of Bioprocess Engineering and Biotechnology, 84016-210 Ponta Grossa, Paraná, Brazil.
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7
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Partition usage of cellulose by coupling approach of supercritical carbon dioxide and cellulase to reducing sugar and nanocellulose. Carbohydr Polym 2020; 229:115533. [PMID: 31826392 DOI: 10.1016/j.carbpol.2019.115533] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 10/19/2019] [Accepted: 10/24/2019] [Indexed: 11/23/2022]
Abstract
Cellulose is the most abundant renewable resource on earth, and its economic utilization has long been a hot research topic. To address these challenges, based on the coexistence of crystalline and amorphous structures within cellulose, we coupled supercritical carbon dioxide (SC-CO2) and cellulase to utilize cellulose subregions. This approach is taken into consideration from the structure of cellulose. Cellulose amorphous regions were enzymatically hydrolysed into reducing sugar, and crystalline regions were converted to nanocellulose, representing efficient use of available raw material. This nanocellulose exhibited different properties with these derived from the traditional method. The smallest effective diameter almost was approximately 5nm, suggesting good uniformity and stability of the nanocellulose. Cellulose characterization results showed that the coupled method exposed more free hydroxyl groups which enhanced the accessibility between the cellulose and substrate, and the stability of nanocellulose. The established process was tested on cotton linters and similar results were obtained.
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8
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Canteli AMD, Voll FAP, Scheer ADP. Statistical evaluation of dye desorption – mixed two- and three-level design and kinetic modeling. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1601624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | | | - Agnes de Paula Scheer
- Graduate Program in Food Engineering, Federal University of Paraná, Curitiba, Paraná, Brazil
- Department of Chemical Engineering, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
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9
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Moreno-Marrodan C, Barbaro P, Caporali S, Bossola F. Low-Temperature Continuous-Flow Dehydration of Xylose Over Water-Tolerant Niobia-Titania Heterogeneous Catalysts. CHEMSUSCHEM 2018; 11:3649-3660. [PMID: 30106509 DOI: 10.1002/cssc.201801414] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/27/2018] [Indexed: 06/08/2023]
Abstract
The sustainable conversion of vegetable biomass-derived feeds to useful chemicals requires innovative routes meeting environmental and economical criteria. The approach herein pursued is the synthesis of water-tolerant, unconventional solid acid monolithic catalysts based on a mixed niobia-titania skeleton building up a hierarchical open-cell network of meso- and macropores, and tailored for use under continuous-flow conditions. The materials were characterized by spectroscopic, microscopy, and diffraction techniques, showing a reproducible isotropic structure and an increasing Lewis/Brønsted acid sites ratio with increasing Nb content. The catalytic dehydration reaction of xylose to furfural was investigated as a representative application. The efficiency of the catalyst was found to be dramatically affected by the niobia content in the titania lattice. The presence of as low as 2 wt % niobium resulted in the highest furfural yield at 140 °C under continuous-flow conditions, by using H2 O/γ-valerolactone as a safe monophasic solvent system. The interception of a transient 2,5-anhydroxylose species suggested the dehydration process occurs via a cyclic intermediates mechanism. The catalytic activity and the formation of the anhydro intermediate were related to the Lewis acid sites (LAS)/Brønsted acid sites (BAS) ratio and indicated a significant contribution of xylose-xylulose isomerization. No significant catalyst deactivation was observed over 4 days usage.
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Affiliation(s)
- Carmen Moreno-Marrodan
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Pierluigi Barbaro
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Stefano Caporali
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, Via Giusti 9, 50121, Firenze, Italy
- Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Filippo Bossola
- Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, 20133, Milano, Italy
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10
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Silveira MHL, Chandel AK, Vanelli BA, Sacilotto KS, Cardoso EB. Production of hemicellulosic sugars from sugarcane bagasse via steam explosion employing industrially feasible conditions: Pilot scale study. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.biteb.2018.07.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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11
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Rigual V, Santos TM, Domínguez JC, Alonso MV, Oliet M, Rodriguez F. Combining autohydrolysis and ionic liquid microwave treatment to enhance enzymatic hydrolysis of Eucalyptus globulus wood. BIORESOURCE TECHNOLOGY 2018; 251:197-203. [PMID: 29277050 DOI: 10.1016/j.biortech.2017.12.034] [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: 10/17/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 06/07/2023]
Abstract
The combination of autohydrolysis and ionic liquid microwave treatments of eucalyptus wood have been studied to facilitate sugar production in a subsequent enzymatic hydrolysis step. Three autohydrolysis conditions (150 °C, 175 °C and 200 °C) in combination with two ionic liquid temperatures (80 °C and 120 °C) were compared in terms of chemical composition, enzymatic digestibility and sugar production. Morphology was measured (using SEM) and the biomass surface was visualized with confocal fluorescence microscopy. The synergistic cooperation of both treatments was demonstrated, enhancing cellulose accessibility. At intermediate autohydrolysis conditions (175 °C) and low ionic liquid temperature (80 °C), a glucan digestibility of 84.4% was obtained. Using SEM micrographs, fractal dimension (as a measure of biomass complexity) and lacunarity (as a measure of homogeneity) were calculated before and after pretreatment. High fractals dimensions and low lacunarities correspond to morphologically complex and homogeneous samples, that are better digested by enzyme cocktails.
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Affiliation(s)
- Victoria Rigual
- Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain.
| | - Tamara M Santos
- Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
| | - Juan Carlos Domínguez
- Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
| | - M Virginia Alonso
- Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
| | - Mercedes Oliet
- Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
| | - Francisco Rodriguez
- Department of Chemical Engineering, Faculty of Chemistry, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
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12
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Hashmi M, Sun Q, Tao J, Wells T, Shah AA, Labbé N, Ragauskas AJ. Comparison of autohydrolysis and ionic liquid 1-butyl-3-methylimidazolium acetate pretreatment to enhance enzymatic hydrolysis of sugarcane bagasse. BIORESOURCE TECHNOLOGY 2017; 224:714-720. [PMID: 27864135 DOI: 10.1016/j.biortech.2016.10.089] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/26/2016] [Accepted: 10/30/2016] [Indexed: 06/06/2023]
Abstract
The aim of this work was to evaluate the efficiency of an ionic liquid (IL) 1-butyl-3-methylimidazolium acetate ([C4mim][OAc]) pretreatment (110°C for 30min) in comparison to high severity autohydrolysis pretreatment in terms of delignification, cellulose crystallinity and enzymatic digestibility. The increase in severity of autohydrolysis pretreatment had positive effect on glucan digestibility, but was limited by the crystallinity of cellulose. [C4mim][OAc] pretreated sugarcane bagasse exhibited a substantial decrease in lignin content, reduced cellulose crystallinity, and enhanced glucan and xylan digestibility. Glucan and xylan digestibility was determined as 97.4% and 98.6% from [C4mim][OAc] pretreated bagasse, and 62.1% and 57.5% from the bagasse autohydrolyzed at 205°C for 6min, respectively. The results indicated the improved digestibility and hydrolysis rates after [C4mim][OAc] pretreatment when compared against a comparable autohydrolyzed biomass.
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Affiliation(s)
- Muzna Hashmi
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Qining Sun
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA
| | - Jingming Tao
- Center of Renewable Carbon, The University of Tennessee, Knoxville, TN, USA
| | - Tyrone Wells
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA
| | - Aamer Ali Shah
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Nicole Labbé
- Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA; Center of Renewable Carbon, The University of Tennessee, Knoxville, TN, USA
| | - Arthur J Ragauskas
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA; Center of Renewable Carbon, The University of Tennessee, Knoxville, TN, USA; Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA.
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13
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Huang Q, Yan Q, Fu J, Lv X, Xiong C, Lin J, Liu Z. Comparative study of different alcoholate pretreatments for enhanced enzymatic hydrolysis of sugarcane bagasse. BIORESOURCE TECHNOLOGY 2016; 211:464-471. [PMID: 27035479 DOI: 10.1016/j.biortech.2016.03.067] [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: 01/22/2016] [Revised: 03/10/2016] [Accepted: 03/12/2016] [Indexed: 06/05/2023]
Abstract
Pretreatment of sugarcane bagasse (SCB) with alcoholates, sodium methoxide (CH3ONa), potassium methoxide (CH3OK) and sodium ethoxide (C2H5ONa), was investigated. Analyses of lignocellulose composition and enzymatic saccharification indicated that C2H5ONa showed the highest enzymatic efficiency of 102.1%. The response surface optimization of C2H5ONa pretreatment showed that under optimal conditions (4% of C2H5ONa, 121°C, 1h), 65.4% of lignin was removed and the enzymatic efficiency reached 105.2%. Hydrolysis of SCB with cellulases and xylanase at a ratio of 4:1 showed the strongest synergism with reducing sugar production of 21g/L and conversion rates of cellulose and xylan reaching 110.4% and 94.5%, respectively. These results indicated that C2H5ONa is a promising alkali to pretreat SCB and the synergism between cellulases and xylanase has a significant effect on enzymatic saccharification of the pretreated SCB.
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Affiliation(s)
- Qing Huang
- Research Center for Molecular Biology, Institutes of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, PR China
| | - Qiuli Yan
- Research Center for Molecular Biology, Institutes of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, PR China
| | - Jing Fu
- Research Center for Molecular Biology, Institutes of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, PR China
| | - Xiaojing Lv
- Research Center for Molecular Biology, Institutes of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, PR China
| | - Chunjiang Xiong
- Research and Development Department, Guangdong Qizhi Biotechnology Co., Ltd., Guangzhou, PR China
| | - Jianghai Lin
- Research Center for Molecular Biology, Institutes of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, PR China.
| | - Zehuan Liu
- Research Center for Molecular Biology, Institutes of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, PR China.
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14
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Sun S, Sun S, Cao X, Sun R. The role of pretreatment in improving the enzymatic hydrolysis of lignocellulosic materials. BIORESOURCE TECHNOLOGY 2016; 199:49-58. [PMID: 26321216 DOI: 10.1016/j.biortech.2015.08.061] [Citation(s) in RCA: 322] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/10/2015] [Accepted: 08/11/2015] [Indexed: 05/08/2023]
Abstract
Lignocellulosic materials are among the most promising alternative energy resources that can be utilized to produce cellulosic ethanol. However, the physical and chemical structure of lignocellulosic materials forms strong native recalcitrance and results in relatively low yield of ethanol from raw lignocellulosic materials. An appropriate pretreatment method is required to overcome this recalcitrance. For decades various pretreatment processes have been developed to improve the digestibility of lignocellulosic biomass. Each pretreatment process has a different specificity on altering the physical and chemical structure of lignocellulosic materials. In this paper, the chemical structure of lignocellulosic biomass and factors likely affect the digestibility of lignocellulosic materials are discussed, and then an overview about the most important pretreatment processes available are provided. In particular, the combined pretreatment strategies are reviewed for improving the enzymatic hydrolysis of lignocellulose and realizing the comprehensive utilization of lignocellulosic materials.
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Affiliation(s)
- Shaoni Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Shaolong Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Xuefei Cao
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Runcang Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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15
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Pretreatment Processes for Cellulosic Ethanol Production: Processes Integration and Modeling for the Utilization of Lignocellulosics Such as Sugarcane Straw. GREEN FUELS TECHNOLOGY 2016. [DOI: 10.1007/978-3-319-30205-8_5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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16
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Silveira MHL, Morais ARC, da Costa Lopes AM, Olekszyszen DN, Bogel-Łukasik R, Andreaus J, Pereira Ramos L. Current Pretreatment Technologies for the Development of Cellulosic Ethanol and Biorefineries. CHEMSUSCHEM 2015; 8:3366-90. [PMID: 26365899 DOI: 10.1002/cssc.201500282] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 06/03/2015] [Indexed: 05/08/2023]
Abstract
Lignocellulosic materials, such as forest, agriculture, and agroindustrial residues, are among the most important resources for biorefineries to provide fuels, chemicals, and materials in such a way to substitute for, at least in part, the role of petrochemistry in modern society. Most of these sustainable biorefinery products can be produced from plant polysaccharides (glucans, hemicelluloses, starch, and pectic materials) and lignin. In this scenario, cellulosic ethanol has been considered for decades as one of the most promising alternatives to mitigate fossil fuel dependence and carbon dioxide accumulation in the atmosphere. However, a pretreatment method is required to overcome the physical and chemical barriers that exist in the lignin-carbohydrate composite and to render most, if not all, of the plant cell wall components easily available for conversion into valuable products, including the fuel ethanol. Hence, pretreatment is a key step for an economically viable biorefinery. Successful pretreatment method must lead to partial or total separation of the lignocellulosic components, increasing the accessibility of holocellulose to enzymatic hydrolysis with the least inhibitory compounds being released for subsequent steps of enzymatic hydrolysis and fermentation. Each pretreatment technology has a different specificity against both carbohydrates and lignin and may or may not be efficient for different types of biomasses. Furthermore, it is also desirable to develop pretreatment methods with chemicals that are greener and effluent streams that have a lower impact on the environment. This paper provides an overview of the most important pretreatment methods available, including those that are based on the use of green solvents (supercritical fluids and ionic liquids).
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Affiliation(s)
- Marcos Henrique Luciano Silveira
- CEPESQ, Research Center in Applied Chemistry, Department of Chemistry, Federal University of Paraná, Curitiba, PR, 81531-970, Brazil
| | - Ana Rita C Morais
- Unit of Bioenergy, National Laboratory of Energy and Geology, 1649-038, Lisbon, Portugal
- LAQV/REQUIMTE, Department of Chemistry, Faculty of Science and Technology, New University of Lisbon, 2829-516, Caparica, Portugal
| | - Andre M da Costa Lopes
- Unit of Bioenergy, National Laboratory of Energy and Geology, 1649-038, Lisbon, Portugal
- LAQV/REQUIMTE, Department of Chemistry, Faculty of Science and Technology, New University of Lisbon, 2829-516, Caparica, Portugal
| | | | - Rafał Bogel-Łukasik
- Unit of Bioenergy, National Laboratory of Energy and Geology, 1649-038, Lisbon, Portugal.
| | - Jürgen Andreaus
- Department of Chemistry, Regional University of Blumenau, Blumenau, SC, 89012 900, Brazil.
| | - Luiz Pereira Ramos
- CEPESQ, Research Center in Applied Chemistry, Department of Chemistry, Federal University of Paraná, Curitiba, PR, 81531-970, Brazil.
- INCT Energy and Environment (INCT E&A), Department of Chemistry, Federal University of Paraná.
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