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Lazaro-Romero A, Contreras-Ramos S, Dehonor-Gómez M, Rojas-García J, Amaya-Delgado L. Optimizing cellulose fraction for enhanced utility: Comparative pre-treatment of Agave tequilana Weber var. blue bagasse fiber for sustainable applications. Heliyon 2024; 10:e29149. [PMID: 38638968 PMCID: PMC11024549 DOI: 10.1016/j.heliyon.2024.e29149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/23/2024] [Accepted: 04/02/2024] [Indexed: 04/20/2024] Open
Abstract
In recent decades, natural fibers have emerged as an alternative to synthetic fibers due to their renewable nature, lower environmental impact, and comparable strength properties. Agave bagasse, a byproduct of agave juice extraction in Mexico, stands out for its potential in various industrial applications, notably biocomposite production. Bagasse is rich in cellulose, along with hemicellulose and lignin. Cellulose is the most suitable to be converted into valuable products, and it is versatile, renewable, and biodegradable. An effective pre-treatment is crucial to enrich its fraction. This study aims to determine the optimal pre-treatment conditions for the agave bagasse. Three different pre-treatments were tested, acid (H2SO4), enzymatic (Cellic® HTec2 enzymatic preparation), and sequence of acid-enzymatic (sulfuric acid and Cellic® HTec2), to determine which pre-treatment got the optimal cellulose fraction increase. The acid pre-treatment was conducted over three time ranges (5, 10, and 15 min) at different acid concentrations (1%, 1.5%, and 2%). Enzymatic reactions were conducted over 24 h, testing three different enzyme concentrations (1.5%, 3%, 4.5%). The sequential pre-treatment utilized the optimal conditions derived from the acid experiments (1.5% H2SO4 for 10 min), followed by enzymatic reactions carried out over three different durations (6, 12, and 24 h). The findings revealed that a 1.5% acid concentration applied for 10 min was the most efficient pre-treatment method. This pre-treatment resulted in a 1.9-fold increase in the cellulose fraction while reducing hemicellulose content by 30%. The hemicellulose reduction was confirmed through Fourier Transform IR spectroscopy (FTIR) analysis, complemented by scanning electron microscopy (SEM) observations highlighting physical alterations in the fiber structure. Furthermore, thermogravimetric analysis (TGA) demonstrated improved thermal stability, suggesting potential use in biocomposites. Future research should evaluate the environmental impact of optimized pre-treatment methods for agave bagasse.
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Affiliation(s)
- A. Lazaro-Romero
- Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas #800, Col. Colinas de la Normal, Guadalajara, Jalisco, Mexico
| | - S.M. Contreras-Ramos
- Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas #800, Col. Colinas de la Normal, Guadalajara, Jalisco, Mexico
| | - M. Dehonor-Gómez
- Centro de Tecnología Avanzada A.C. (CIATEQ), Circuito de la Industria Poniente Lote 11, Manzana 3, No. 11, Col. Parque Industrial Exhacienda Doña Rosa, Lerma, Estado de México, Mexico
| | - J.M. Rojas-García
- Centro de Tecnología Avanzada A.C. (CIATEQ), Circuito de la Industria Poniente Lote 11, Manzana 3, No. 11, Col. Parque Industrial Exhacienda Doña Rosa, Lerma, Estado de México, Mexico
| | - L. Amaya-Delgado
- Unidad de Biotecnología Industrial, CIATEJ, Camino Arenero 1227, Col. El Bajío, Zapopan, Jalisco, México
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Pérez-Pimienta JA, Castillo-Preciado DJ, González-Álvarez V, Méndez-Acosta HO. Optimization of cost-effective enzymatic saccharification using low-cost protic ionic liquid as pretreatment agent in Agave bagasse. Waste Manag 2024; 175:204-214. [PMID: 38218091 DOI: 10.1016/j.wasman.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/23/2023] [Accepted: 01/02/2024] [Indexed: 01/15/2024]
Abstract
This work studied the optimization of enzymatic saccharification of Agave tequilana bagasse (ATB) pretreated with the low-cost protic ionic liquid (PIL) ethanolamine acetate ([EOA][OAc]) using the highly available and cost-effective mixture of the enzymatic cocktails Celluclast 1.5L-Viscozyme L. Response surface methodology (RSM) was employed to maximize the sugars concentration and yield. The RSM optimization conditions of the enzymatic saccharification of pretreated ATB that achieved the maximum reducing sugars (RS) concentration were: 11.50 % w/v solids loading, 4.26 pH with 0.76 and 1.86 mg protein/mL buffer of Viscozyme L and Celluclast 1.5L, respectively. Similarly, the conditions that maximize the sugar yield (SY) were solids loading of 5.62 % w/v, and 4.51 pH as well as 1.07 and 2.03 mg protein/mL buffer of Viscozyme L and Celluclast 1.5L, respectively. Saccharification performance of the first-generation and low-cost enzyme mixture Celluclast 1.5L-Viscozyme L was compared with that reached by a second-generation and higher-cost CTec2, where Celluclast 1.5L-Viscozyme L achieved 60.86 ± 2.66 % y 79.25 ± 3.34 % of the sugars released by CTec2 at the same hydrolysis time (12 h) for the sugar concentration and yield models, respectively. These results are encouraging since they positively contribute to cost reduction and availability issues, which are key parameters to consider when thinking about scaling-up the process.
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Affiliation(s)
| | | | - Víctor González-Álvarez
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Hugo O Méndez-Acosta
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, México.
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Barragán-Trinidad M, Buitrón G. Pretreatment of agave bagasse with ruminal fluid to improve methane recovery. Waste Manag 2024; 175:52-61. [PMID: 38159368 DOI: 10.1016/j.wasman.2023.12.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/17/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
Agave bagasse, a lignocellulosic waste that results from the milling and juice extraction of Agave tequilana var azul pineapples, is a suitable substrate for the production of methane through anaerobic digestion. However, it is necessary to apply a pretreatment to convert the bagasse into energy. In this context, this paper proposes using ruminal microorganisms to hydrolyze agave bagasse. This study evaluated the effect of the initial agave bagasse to ruminal fluid (S0/X0) ratio (0.33, 0.5, 1, and 2) on the hydrolysis efficiency. Subsequently, the supernatant was used for methane production. The hydrolysis efficiency increased as the S0/X0 ratio decreased. A hydrolysis efficiency of 60 % was achieved using an S0/X0 ratio of 0.33. The S0/X0 ratio of 0.33 optimally improved the specific methane production and energy recovery (155 ± 2 mL CH4/g TS and 6.1 ± 0.1 kJ/g TS) compared to raw biomass. The most abundant hydrolytic bacteria were Prevotella, Ruminococcus and Fibrobacter, and Engyodontium was the most abundant proteolytic fungus.
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Affiliation(s)
- Martín Barragán-Trinidad
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico.
| | - Germán Buitrón
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico.
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Parascanu MM, Sanchez N, Sandoval-Salas F, Carreto CM, Soreanu G, Sanchez-Silva L. Environmental and economic analysis of bioethanol production from sugarcane molasses and agave juice. Environ Sci Pollut Res Int 2021; 28:64374-64393. [PMID: 34304359 PMCID: PMC8610961 DOI: 10.1007/s11356-021-15471-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
In this article, sugarcane molasses and agave juice were compared as potential feedstocks for producing bioethanol in Mexico in terms of their environmental impact and economic factors. Life cycle assessment (LCA) using SimaPro was carried out to calculate environmental impacts by using a cradle-to-gate approach. A preliminary economic analysis was performed to determine the economic feasibility of the studied options. Also, capital goods costs were obtained using the Aspen Plus economy package. Moreover, a sensitivity analysis was involved to compare the environmental and economic viability of producing bioethanol from sugarcane molasses and agave juice. LCA results revealed that cultivation and fermentation were the most harmful stages when producing bioethanol from sugarcane molasses and agave juice, respectively. Furthermore, when it was derived from agave juice rather than sugarcane molasses, it had more environmental benefits. This was ascribed to the lower consumption rate of fertilizers, pesticides, and emissions given off from the former. Regarding financial aspects, the preliminary analysis showed that producing bioethanol was not economically viable when grid energy alone was used. However, if power from the grid is partially replaced with renewable energy, producing bioethanol becomes economically feasible, and sugarcane molasses is the most suitable feedstock.
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Affiliation(s)
| | - Nestor Sanchez
- Energy, Materials and Environmental Laboratory, Department of Chemical and Biochemical Processes, Universidad de La Sabana, Campus Universitario Puente del Común, km. 7 Autopista Norte, Bogotá, Colombia
| | | | | | - Gabriela Soreanu
- Department of Environmental Engineering and Management, Technical University "Gheorghe Asachi" of Iasi, Iasi, Romania
| | - Luz Sanchez-Silva
- Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain.
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Escobedo-García S, Salas-Tovar JA, Flores-Gallegos AC, Contreras-Esquivel JC, González-Montemayor ÁM, López MG, Rodríguez-Herrera R. Functionality of Agave Bagasse as Supplement for the Development of Prebiotics-Enriched Foods. Plant Foods Hum Nutr 2020; 75:96-102. [PMID: 31853903 DOI: 10.1007/s11130-019-00785-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Agave bagasse is a fibrous-like material obtained during aguamiel extraction, which is also in contact with indigenous microbiota of agave plant during aguamiel fermentation. This plant is a well-known carrier of the prebiotic fructan-type carbohydrates, which have multiple ascribable health benefits. In the present work, the potential of ashen and green agave bagasse as functional ingredients in supplemented cookies was studied. For its application, the chemical, functional, properties of agave bagasses and formulated cookies were evaluated, as well as the physical properties of cookies. Chemical characterization was carried out by the proximate analysis of both bagasses and cookies, besides, the analysis of oligosaccharides was made by thin-layer chromatography and high-performance anion-exchange chromatography. In the same way, functional properties such as oil holding capacity, organic molecule absorption capacity, swelling capacity, and water holding capacity were analyzed in both agave bagasses and supplemented cookies. Finally, modifications in color and texture due to bagasse addition was studied through an analysis of total color difference and a penetrometric test, respectively. In this sense, ashen and green agave bagasses demonstrated chemical and functional properties for use in the food industry, since they increased oil holding capacity of cookies and transferred prebiotic fructooligosaccharides to both agave bagasse formulations, which remain active as a prebiotic ingredient in cookies after in vitro digestion and cookie manufacture, including thermal treatment. Hence, agave bagasse could be considered a valuable alternative for the addition of the nutritionally-relevant dietary fiber in healthier foods.
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Affiliation(s)
- Sarai Escobedo-García
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza and José Cárdenas s/n, República Oriente, 25280, Saltillo, Coahuila, Mexico
| | - Jesús A Salas-Tovar
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza and José Cárdenas s/n, República Oriente, 25280, Saltillo, Coahuila, Mexico
| | - Adriana C Flores-Gallegos
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza and José Cárdenas s/n, República Oriente, 25280, Saltillo, Coahuila, Mexico
| | - Juan C Contreras-Esquivel
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza and José Cárdenas s/n, República Oriente, 25280, Saltillo, Coahuila, Mexico
| | - Ángela M González-Montemayor
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza and José Cárdenas s/n, República Oriente, 25280, Saltillo, Coahuila, Mexico
| | - Mercedes G López
- Biotechnology and Biochemistry Department, Centro de Investigación y de Estudios Avanzados del IPN, Unidad Irapuato, 36821 Irapuato, Guanajuato, Mexico
| | - Raúl Rodríguez-Herrera
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza and José Cárdenas s/n, República Oriente, 25280, Saltillo, Coahuila, Mexico.
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Montoya-Rosales JDJ, Olmos-Hernández DK, Palomo-Briones R, Montiel-Corona V, Mari AG, Razo-Flores E. Improvement of continuous hydrogen production using individual and binary enzymatic hydrolysates of agave bagasse in suspended-culture and biofilm reactors. Bioresour Technol 2019; 283:251-260. [PMID: 30913433 DOI: 10.1016/j.biortech.2019.03.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Continuous hydrogen (H2) production from individual (Stonezyme, IH) and binary (Celluclast-Viscozyme, BH) enzymatic hydrolysates of agave bagasse was evaluated in continuous stirred-tank reactors (CSTR) and trickling bed reactors (TBR). The volumetric H2 production rates (VHPR) in CSTR were 13 and 2.25 L H2/L-d with BH and IH, respectively. Meanwhile, VHPR of 5.76 and 2.0 L H2/L-d were obtained in the TBR configuration using BH and IH, respectively. Differences on VHPR between reactors could be explained by substrate availability, which is intrinsic to the growth mode of each reactor configuration; while differences of VHPR between hydrolysates were possibly related to the composition of enzymatic hydrolysates. Furthermore, homoacetogenesis was strongly influenced by H2 and substrate transfer conditions. Considering VHPR, H2 yields, and costs of hydrolysis, hydrogen production from binary hydrolysates of agave bagasse was identified as the most promising alternative evaluated with scale-up potential for the production of energy biofuels.
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Affiliation(s)
- José de Jesús Montoya-Rosales
- Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Ciencias Ambientales, Camino a la Presa San José 2055, Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP, Mexico
| | - Diana Karime Olmos-Hernández
- Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Ciencias Ambientales, Camino a la Presa San José 2055, Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP, Mexico
| | - Rodolfo Palomo-Briones
- Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Ciencias Ambientales, Camino a la Presa San José 2055, Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP, Mexico
| | - Virginia Montiel-Corona
- Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Ciencias Ambientales, Camino a la Presa San José 2055, Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP, Mexico
| | - Angelo Gabriel Mari
- Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária 2069, 85819-110 Cascavel, PR, Brazil
| | - Elías Razo-Flores
- Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Ciencias Ambientales, Camino a la Presa San José 2055, Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP, Mexico.
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Pérez-Pimienta JA, Icaza-Herrera JPA, Méndoza-Pérez JA, González-Álvarez V, Méndez-Acosta HO, Arreola-Vargas J. Mild reaction conditions induce high sugar yields during the pretreatment of Agave tequilana bagasse with 1-ethyl-3-methylimidazolium acetate. Bioresour Technol 2019; 275:78-85. [PMID: 30579104 DOI: 10.1016/j.biortech.2018.12.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Sequential 2k factorial and central composite designs were used to optimize Agave tequilana bagasse (ATB) pretreatment by using 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]). Reaction time, temperature and solids loading were the studied factors while sugar yield was the response variable. Results indicated that optimal conditions (119 °C, 142 min) using high solids loading (30%) were achieved at lower temperatures and reaction times than those previously reported in the literature. It was also revealed that solid recovery after pretreatment with [Emim][OAc] is a key factor. The increase in enzymatic digestibility of pretreated ATB was correlated to a decrease in crystallinity and lower lignin content as observed using microscopy techniques and weaken chemical bonds by Fourier transform infrared spectroscopy. Yields of glucose and xylose in the hydrolysate were 41.3, and 13.0 kg per 100 kg of untreated ATB, which are equivalent to glucan and xylan conversions of 75.9% and 82.9%, respectively.
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Affiliation(s)
| | - José P A Icaza-Herrera
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Jorge A Méndoza-Pérez
- Department of Engineering in Environmental Systems, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Víctor González-Álvarez
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Hugo O Méndez-Acosta
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Jorge Arreola-Vargas
- División de Procesos Industriales, Universidad Tecnológica de Jalisco, Guadalajara, Jalisco, Mexico.
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Perez-Pimienta JA, Sathitsuksanoh N, Thompson VS, Tran K, Ponce-Noyola T, Stavila V, Singh S, Simmons BA. Ternary ionic liquid-water pretreatment systems of an agave bagasse and municipal solid waste blend. Biotechnol Biofuels 2017; 10:72. [PMID: 28344647 PMCID: PMC5361851 DOI: 10.1186/s13068-017-0758-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 03/11/2017] [Indexed: 05/25/2023]
Abstract
BACKGROUND Pretreatment is necessary to reduce biomass recalcitrance and enhance the efficiency of enzymatic saccharification for biofuel production. Ionic liquid (IL) pretreatment has gained a significant interest as a pretreatment process that can reduce cellulose crystallinity and remove lignin, key factors that govern enzyme accessibility. There are several challenges that need to be addressed for IL pretreatment to become viable for commercialization, including IL cost and recyclability. In addition, it is unclear whether ILs can maintain process performance when utilizing low-cost, low-quality biomass feedstocks such as the paper fraction of municipal solid waste (MSW), which are readily available in high quantities. One approach to potentially reduce IL cost is to use a blend of ILs at different concentrations in aqueous mixtures. Herein, we describe 14 IL-water systems with mixtures of 1-ethyl-3-ethylimidazolium acetate ([C2C1Im][OAc]), 1-butyl-3-ethylimidazolium acetate ([C4C1Im][OAc]), and water that were used to pretreat MSW blended with agave bagasse (AGB). The detailed analysis of IL recycling in terms of sugar yields of pretreated biomass and IL stability was examined. RESULTS Both biomass types (AGB and MSW) were efficiently disrupted by IL pretreatment. The pretreatment efficiency of [C2C1Im][OAc] and [C4C1Im][OAc] decreased when mixed with water above 40%. The AGB/MSW (1:1) blend demonstrated a glucan conversion of 94.1 and 83.0% using IL systems with ~10 and ~40% water content, respectively. Chemical structures of fresh ILs and recycle ILs presented strong similarities observed by FTIR and 1H-NMR spectroscopy. The glucan and xylan hydrolysis yields obtained from recycled IL exhibited a slight decrease in pretreatment efficiency (less than 10% in terms of hydrolysis yields compared to that of fresh IL), and a decrease in cellulose crystallinity was observed. CONCLUSIONS Our results demonstrated that mixing ILs such as [C2C1Im][OAc] and [C4C1Im][OAc] and blending the paper fraction of MSW with agricultural residues, such as AGB, may contribute to lower the production costs while maintaining high sugar yields. Recycled IL-water mixtures provided comparable results to that of fresh ILs. Both of these results offer the potential of reducing the production costs of sugars and biofuels at biorefineries as compared to more conventional IL conversion technologies.Graphical abstractSchematic of ionic liquid (IL) pretreatment of agave bagasse (AB) and paper-rich fraction of municipal solid waste (MSW).
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Affiliation(s)
| | - Noppadon Sathitsuksanoh
- Department of Chemical Engineering and Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA
| | - Vicki S. Thompson
- Biological and Chemical Processing Department, Idaho National Laboratory, Idaho Falls, ID USA
| | - Kim Tran
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA
- Biological and Engineering Sciences Center, Sandia National Laboratories, Livermore, CA USA
| | - Teresa Ponce-Noyola
- Department of Biotechnology and Bioengineering, CINVESTAV-IPN, Ciudad de México, Mexico
| | - Vitalie Stavila
- Energy Nanomaterials Department, Sandia National Laboratories, Livermore, CA USA
| | - Seema Singh
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA
- Biological and Engineering Sciences Center, Sandia National Laboratories, Livermore, CA USA
| | - Blake A. Simmons
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA
- Biological and Engineering Sciences Center, Sandia National Laboratories, Livermore, CA USA
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Pérez-Pimienta JA, Vargas-Tah A, López-Ortega KM, Medina-López YN, Mendoza-Pérez JA, Avila S, Singh S, Simmons BA, Loaces I, Martinez A. Sequential enzymatic saccharification and fermentation of ionic liquid and organosolv pretreated agave bagasse for ethanol production. Bioresour Technol 2017; 225:191-198. [PMID: 27889478 DOI: 10.1016/j.biortech.2016.11.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 06/06/2023]
Abstract
Agave bagasse (AGB) has gained recognition as a drought-tolerant biofuel feedstock with high productivity in semiarid regions. A comparative analysis of ionic liquid (IL) and organosolv (OV) pretreatment technologies in AGB was performed using a sequential enzymatic saccharification and fermentation (SESF) strategy with cellulolytic enzymes and the ethanologenic Escherichia coli strain MS04. After pretreatment, 86% of xylan and 45% of lignin were removed from OV-AGB, whereas IL-AGB reduced lignin content by 28% and xylan by 50% when compared to the untreated biomass. High glucan (>90%) and xylan (>83%) conversion was obtained with both pretreated samples. During the fermentation stage (48h), 12.1 and 12.7kg of ethanol were produced per 100kg of untreated AGB for IL and OV, respectively. These comparative analyses showed the advantages of SESF using IL and OV in a biorefinery configuration where a better understanding of AGB recalcitrance is key for future applications.
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Affiliation(s)
| | - Alejandra Vargas-Tah
- Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Apdo. Postal 510-3, Cuernavaca, Morelos 62250, Mexico
| | - Karla M López-Ortega
- Unidad Académica de Ciencias Químico Biológicos y Farmacéuticos, Universidad Autónoma de Nayarit, Tepic, Mexico
| | - Yessenia N Medina-López
- Unidad Académica de Ciencias Químico Biológicos y Farmacéuticos, Universidad Autónoma de Nayarit, Tepic, Mexico
| | - Jorge A Mendoza-Pérez
- Department of Engineering in Environmental Systems, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Sayeny Avila
- Joint BioEnergy Institute, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Emeryville, CA, United States
| | - Seema Singh
- Joint BioEnergy Institute, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Emeryville, CA, United States; Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA, United States
| | - Blake A Simmons
- Joint BioEnergy Institute, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Emeryville, CA, United States; Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA, United States
| | - Inés Loaces
- Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Apdo. Postal 510-3, Cuernavaca, Morelos 62250, Mexico
| | - Alfredo Martinez
- Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Apdo. Postal 510-3, Cuernavaca, Morelos 62250, Mexico.
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Perez-Pimienta JA, Flores-Gómez CA, Ruiz HA, Sathitsuksanoh N, Balan V, da Costa Sousa L, Dale BE, Singh S, Simmons BA. Evaluation of agave bagasse recalcitrance using AFEX™, autohydrolysis, and ionic liquid pretreatments. Bioresour Technol 2016; 211:216-23. [PMID: 27017132 DOI: 10.1016/j.biortech.2016.03.103] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/17/2016] [Accepted: 03/19/2016] [Indexed: 05/15/2023]
Abstract
A comparative analysis of the response of agave bagasse (AGB) to pretreatment by ammonia fiber expansion (AFEX™), autohydrolysis (AH) and ionic liquid (IL) was performed using 2D nuclear magnetic resonance (NMR) spectroscopy, wet chemistry, enzymatic saccharification and mass balances. It has been found that AFEX pretreatment preserved all carbohydrates in the biomass, whereas AH removed 62.4% of xylan and IL extracted 25% of lignin into wash streams. Syringyl and guaiacyl lignin ratio of untreated AGB was 4.3, whereas for the pretreated biomass the ratios were 4.2, 5.0 and 4.7 for AFEX, AH and IL, respectively. Using NMR spectra, the intensity of β-aryl ether units in aliphatic, anomeric, and aromatic regions decreased in all three pretreated samples when compared to untreated biomass. Yields of glucose plus xylose in the major hydrolysate stream were 42.5, 39.7 and 26.9kg per 100kg of untreated AGB for AFEX, IL and AH, respectively.
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Affiliation(s)
| | - Carlos A Flores-Gómez
- Department of Chemical Engineering and Materials Science, DOE Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI, United States
| | - Héctor A Ruiz
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo, Coahuila, Mexico
| | - Noppadon Sathitsuksanoh
- Department of Chemical Engineering and Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, United States; Joint BioEnergy Institute, Physical Biosciences Division, Lawrence Berkeley National Laboratory, Emeryville, CA, United States
| | - Venkatesh Balan
- Department of Chemical Engineering and Materials Science, DOE Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI, United States
| | - Leonardo da Costa Sousa
- Department of Chemical Engineering and Materials Science, DOE Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI, United States
| | - Bruce E Dale
- Department of Chemical Engineering and Materials Science, DOE Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI, United States
| | - Seema Singh
- Joint BioEnergy Institute, Physical Biosciences Division, Lawrence Berkeley National Laboratory, Emeryville, CA, United States; Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA, United States
| | - Blake A Simmons
- Joint BioEnergy Institute, Physical Biosciences Division, Lawrence Berkeley National Laboratory, Emeryville, CA, United States; Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA, United States
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