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Rajamani S, Santhosh R, Raghunath R, Jadhav SA. Value-added chemicals from sugarcane bagasse using ionic liquids. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01732-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Razavi AS, Kakar F, Koupaie EH, Hafez H, Elbeshbishy E. Biomethane production improvement by hydrothermal pretreatment of thickened waste activated sludge. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:487-500. [PMID: 33504710 DOI: 10.2166/wst.2020.598] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This study evaluated the impact of hydrothermal pretreatment on thickened waste activated sludge (TWAS) for solubilization enhancement and biomethane production improvement through the mesophilic anaerobic digestion process. In order to assess the effect of temperature, retention time and severity index (SI) of the hydrothermal pretreatment, TWAS was exposed to fifteen different pretreatment conditions within a combination of 10 different pretreatment temperature range (150-240 °C), five different retention times (5-30 min) and five different severity indexes (SI = 3, 3.5, 4, 4.5 and 5). The solubilization enhancement was observed in all hydrothermally pretreated samples with the highest solubilization efficiency of 49% in pretreatment conditions of 200 °C and 10 min retention time within the corresponding SI = 4. Biomethane production was not improved in all fifteen pretreatment conditions, pretreatment with SI beyond 4 decreased the biodegradability of TWAS. The highest biomethane production was observed in the pretreatment condition of 170 °C and 10 min with a 40% increase compared to non-pretreated TWAS.
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Affiliation(s)
- Ahmad Shabir Razavi
- Environmental Research Group for Resource Recovery, Department of Civil Engineering, Faculty of Engineering, Architecture and Science, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada E-mail:
| | - Farokhlaqa Kakar
- Environmental Research Group for Resource Recovery, Department of Civil Engineering, Faculty of Engineering, Architecture and Science, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada E-mail:
| | - Ehssan Hosseini Koupaie
- Environmental Research Group for Resource Recovery, Department of Civil Engineering, Faculty of Engineering, Architecture and Science, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada E-mail:
| | - Hisham Hafez
- Greenfield Global, 275 Bloomfield Road, Chatham, Ontario N7M 0N6, Canada
| | - Elsayed Elbeshbishy
- Environmental Research Group for Resource Recovery, Department of Civil Engineering, Faculty of Engineering, Architecture and Science, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada E-mail:
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Physicochemical Properties and Lignin Degradation of Thermal-Pretreated Oil Palm Empty Fruit Bunch. ENERGIES 2020. [DOI: 10.3390/en13225966] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Oil palm empty fruit bunches (EFB) are recoverable lignocellulosic biomass serving as feedstock for biofuel production. The major hurdle in producing biofuel from biomass is the abundance of embedded recalcitrant lignin. Pretreatment is a key step to increase the accessibility of enzymes to fermentable sugars. In this study, thermal pretreatments at moderate temperatures ranging from 150 °C to 210 °C, at different durations (30–120 min) and EFB particle sizes (1–10 mm), were employed to maximize lignin degradation. Observation through a scanning electron microscope (SEM) revealed disruptions in EFB structure and the removal of silica bodies and other impurities upon thermal pretreatment. Remarkable changes on the elemental contents and functional groups occurred, as was evident from the energy dispersive X-ray (EDX) and Fourier transform infrared (FTIR) analyses. The smallest EFB size yielded higher lignin degradation—about 2.3-fold and 1.2-fold higher—than the biggest and moderate tested EFB sizes, indicating a smaller particle size provides a higher surface area for bioreaction. Furthermore, applying a longer duration of treatment and a higher temperature enhanced lignin degradation by up to 58%. This study suggests that moderate thermal treatment could enhance lignin degradation by altering the physicochemical structure of EFB, which is beneficial in improving biofuel production.
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Azahanim Khamis N, Shamsudin S, Siha Abd Rahman N, Farihan Kasim K. Effects of autohydrolysis on rice biomass for reducing sugars production. MATERIALS TODAY: PROCEEDINGS 2019; 16:2078-2087. [DOI: 10.1016/j.matpr.2019.06.095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Kim TH, Ryu HJ, Oh KK. Low acid hydrothermal fractionation of Giant Miscanthus for production of xylose-rich hydrolysate and furfural. BIORESOURCE TECHNOLOGY 2016; 218:367-372. [PMID: 27380022 DOI: 10.1016/j.biortech.2016.06.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/23/2016] [Accepted: 06/25/2016] [Indexed: 06/06/2023]
Abstract
Low acid hydrothermal (LAH) fractionation was developed for the effective recovery of hemicellulosic sugar (mainly xylose) from Miscanthus sacchariflorus Goedae-Uksae 1 (M. GU-1). The xylose yield was maximized at 74.75% when the M. GU-1 was fractionated at 180°C and 0.3wt.% of sulfuric acid for 10min. At this condition, the hemicellulose (mainly xylan) degradation was 86.41%. The difference between xylan degradation and xylose recovery yield, i.e., xylan loss, was 11.66%, as indicated by the formation of decomposed products. The furfural, the value added biochemical product, was also obtained by 0.42g/L at this condition, which was 53.82% of furfural production yield based on the xylan loss. After then, the furfural production continued to increase to a maximum concentration of 1.87g/L, at which point the xylan loss corresponded to 25.87%.
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Affiliation(s)
- Tae Hyun Kim
- Department of Environmental Engineering, Kongju National University, Cheonan, Chungnam 31080, Republic of Korea
| | - Hyun Jin Ryu
- R&D Center, SugarEn Co., Ltd., Cheonan, Chungnam 31116, Republic of Korea
| | - Kyeong Keun Oh
- Department of Applied Chemical Engineering, Dankook University, Cheonan, Chungnam 31116, Republic of Korea.
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Acetic acid-assisted hydrothermal fractionation of empty fruit bunches for high hemicellulosic sugar recovery with low byproducts. Appl Biochem Biotechnol 2015; 176:1445-58. [DOI: 10.1007/s12010-015-1656-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/27/2015] [Indexed: 11/28/2022]
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Cybulska I, Chaturvedi T, Brudecki GP, Kádár Z, Meyer AS, Baldwin RM, Thomsen MH. Chemical characterization and hydrothermal pretreatment of Salicornia bigelovii straw for enhanced enzymatic hydrolysis and bioethanol potential. BIORESOURCE TECHNOLOGY 2014; 153:165-172. [PMID: 24362358 DOI: 10.1016/j.biortech.2013.11.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/12/2013] [Accepted: 11/25/2013] [Indexed: 06/03/2023]
Abstract
Salicornia bigelovii straw was characterized and evaluated as a potential lignocellulosic bioethanol feedstock. S. bigelovii used in the study was grown in the United Arab Emirates using saltwater (40ppt) for irrigation. Salt removal was performed prior to pretreatment to protect the processing equipment and avoid inhibition of enzymes and yeast. Composition of the washed biomass was comparable to traditional lignocellulosic biomasses with relatively high glucan and xylan content (26 and 22g/100gDM, respectively) but with lower lignin content (7g/100gDM). The washed feedstock was subjected to hydrothermal pretreatment, producing highly digestible (up to 92% glucan-to-glucose conversion) and fermentable (up to 100% glucose-to-ethanol conversion) fiber fractions. Liquid fractions obtained in the pretreatment did not show inhibition towards Saccharomyces cerevisiae. No significant differences among the enzymatic convertibility and microbial fermentability of the fibers as well as low xylose recoveries suggest that lower severity pretreatment conditions could be exploited for S. bigelovii.
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Affiliation(s)
- Iwona Cybulska
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Tanmay Chaturvedi
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Grzegorz P Brudecki
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Zsófia Kádár
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Anne S Meyer
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Robert M Baldwin
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Mette Hedegaard Thomsen
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
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Enhancement of the Enzymatic Digestibility and Ethanol Production from Sugarcane Bagasse by Moderate Temperature-Dilute Ammonia Treatment. Appl Biochem Biotechnol 2013; 171:1108-1117. [DOI: 10.1007/s12010-013-0327-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 06/10/2013] [Indexed: 10/26/2022]
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Cheng K, Sorek H, Zimmermann H, Wemmer DE, Pauly M. Solution-state 2D NMR spectroscopy of plant cell walls enabled by a dimethylsulfoxide-d6/1-ethyl-3-methylimidazolium acetate solvent. Anal Chem 2013; 85:3213-21. [PMID: 23413964 DOI: 10.1021/ac303529v] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lignocellulosic biomass is composed of the polysaccharides cellulose and hemicellulose and the polyphenol lignin. Many current methods for analyzing the structure of lignocelluloses involve a sequential extraction of the material and subsequent analysis of the resulting fractions, which is labor-intensive and time-consuming. The work presented here assesses the dissolution of whole lignocellulosic material, focusing on biomass derived from the perennial bioenergy grass Miscanthus. The solvent dimethylsulfoxide (DMSO)-d6 containing 1-ethyl-3-methylimidazolium acetate ([Emim]OAc) was able to dissolve lignocellulosic material completely and gave high-resolution 2D heteronuclear single quantum coherence (HSQC) NMR spectra of the entire array of wall polymers. Extrapolated time-zero HSQC was applied using DMSO-d6/[Emim]OAc-d14 and enabled quantitative analysis of structural traits of lignocellulose components.
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Affiliation(s)
- Kun Cheng
- Energy Biosciences Institute, University of California, Berkeley, California 94720, United States
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Chen C, Boldor D, Aita G, Walker M. Ethanol production from sorghum by a microwave-assisted dilute ammonia pretreatment. BIORESOURCE TECHNOLOGY 2012; 110:190-197. [PMID: 22322148 DOI: 10.1016/j.biortech.2012.01.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 01/06/2012] [Accepted: 01/08/2012] [Indexed: 05/26/2023]
Abstract
The efficiency of a batch microwave-assisted ammonia heating system was investigated as pretreatment for sweet sorghum bagasse and its effect on porosity, chemical composition, particle size, enzymatic hydrolysis and fermentation into ethanol evaluated. Sorghum bagasse, fractionated into three particle size groups (9.5-18, 4-6 and 1-2mm), was pretreated with ammonium hydroxide (28% v/v solution) and water at a ratio of 1:0.5:8 at 100, 115, 130, 145 and 160°C for 1h. Simon's stain method revealed an increase in the porosity of the biomass compared to untreated biomass. The most lignin removal (46%) was observed at 160°C. About 90% of the cellulose and 73% of the hemicellulose remained within the bagasse. The best glucose yields and ethanol yields (from glucose only) among all different pretreatment conditions averaged 42/100g dry biomass and 21/100g dry biomass, respectively with 1-2mm sorghum bagasse pretreated at 130°C for 1h.
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Affiliation(s)
- Cong Chen
- Biological and Agricultural Engineering Department, Louisiana State University Agricultural Center, United States
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