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Fan X, Su Y, Wu Y, Li M, Lu Y, Xue H, Li G. Comprehensive understanding of impacts of steam explosion on facilitated extraction and transformation of flavonoids from Astragali Radix. Food Chem 2024; 463:141410. [PMID: 39326311 DOI: 10.1016/j.foodchem.2024.141410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 09/18/2024] [Accepted: 09/22/2024] [Indexed: 09/28/2024]
Abstract
Recalcitrant structure of cell walls restricts the extraction of bioactive components from edible plants. In this study, the impacts of steam explosion (SE) on the release and transformation of flavonoids in Astragali Radix (AR) were evaluated. Results revealed that SE destroyed the compact structure of cell walls. Furthermore, the porous network was reformed due to the degradation of hemicelluloses and water-soluble components. The maximum extraction contents of ethanol-soluble and water-soluble flavonoids of 6.34 and 1.48 mg/g were obtained from the pretreated AR (1.5 MPa, 5 min), which were 5.22 and 2.88 times higher than those obtained from the untreated AR, respectively. SE not only released bound flavonoids from cell walls by cleaving glycoside or ester bonds, but also transformed some flavonoid glycosides into aglycones through deglycosylation. In conclusion, SE can reduce mass transfer hindrance and facilitate flavonoid transformation, thus providing a green and facile processing method for traditional edible plants.
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Affiliation(s)
- Xueyan Fan
- Key Laboratory of Herbage and Endemic Crop Biology, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Youla Su
- Key Laboratory of Herbage and Endemic Crop Biology, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Yue Wu
- Key Laboratory of Herbage and Endemic Crop Biology, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Min Li
- College of Basic Medicine, Inner Mongolia Medical University, Hohhot 010070, China
| | - Yan Lu
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Huiting Xue
- Key Laboratory of Herbage and Endemic Crop Biology, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; College of Basic Medicine, Inner Mongolia Medical University, Hohhot 010070, China.
| | - Guanhua Li
- Key Laboratory of Herbage and Endemic Crop Biology, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China.
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Adnane I, Taoumi H, Elouahabi K, Lahrech K, Oulmekki A. Valorization of crop residues and animal wastes: Anaerobic co-digestion technology. Heliyon 2024; 10:e26440. [PMID: 38439870 PMCID: PMC10909651 DOI: 10.1016/j.heliyon.2024.e26440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 03/06/2024] Open
Abstract
To switch the over-reliance on fossil-based resources, curb environmental quality deterioration, and promote the use of renewable fuels, much attention has recently been directed toward the implementation of sustainable and environmentally benign 'waste-to-energy' technology exploiting a clean, inexhaustible, carbon-neutral, and renewable energy source, namely agricultural biomass. From this perspective, anaerobic co-digestion (AcoD) technology emerges as a potent and plausible approach to attain sustainable energy development, foster environmental sustainability, and, most importantly, circumvent the key challenges associated with mono-digestion. This review article provides a comprehensive overview of AcoD as a biochemical valorization pathway of crop residues and livestock manure for biogas production. Furthermore, this manuscript aims to assess the different biotic and abiotic parameters affecting co-digestion efficiency and present recent advancements in pretreatment technologies designed to enhance feedstock biodegradability and conversion rate. It can be concluded that the substantial quantities of crop residues and animal waste generated annually from agricultural practices represent valuable bioenergy resources that can contribute to meeting global targets for affordable renewable energy. Nevertheless, extensive and multidisciplinary research is needed to evolve the industrial-scale implementation of AcoD technology of livestock waste and crop residues, particularly when a pretreatment phase is included, and bridge the gap between small-scale studies and real-world applications.
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Affiliation(s)
- Imane Adnane
- Sidi Mohamed Ben Abdellah University (USMBA), IPI Laboratory, ENS, Fez, Morocco
| | - Hamza Taoumi
- Sidi Mohamed Ben Abdellah University (USMBA), IPI Laboratory, ENS, Fez, Morocco
| | - Karim Elouahabi
- Sidi Mohamed Ben Abdellah University (USMBA), IPI Laboratory, ENS, Fez, Morocco
| | - Khadija Lahrech
- Sidi Mohamed Ben Abdellah University (USMBA), ENSA, Fez, Morocco
| | - Abdellah Oulmekki
- Laboratory of Processes, Materials and Environment (LPME), Faculty of Science and Technology, Sidi Mohamed Ben Abdellah University, Fez, Morocco
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Eom T, Isanapong J, Kumnorkaew P, Sriariyanun M, Pornwongthong P. 1-Ethyl-3-methylimidazolium acetate pretreatment for maximizing reducing sugar recovery from mixed cabbage residue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:15491-15502. [PMID: 38300494 DOI: 10.1007/s11356-024-32189-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/21/2024] [Indexed: 02/02/2024]
Abstract
Vegetable waste, including mixed cabbage residue (MCR), is considered a promising raw material for bioenergy production because of its high lignocellulosic component. In this study, the pretreatment of MCR by ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]) was optimized based on response surface methodology. The optimal condition for MCR pretreatment was determined at 55.8 °C, with a reaction of 2.65 h and liquid-solid ratio of 4.60:1 v/w. Hydrolysis of pretreated MCR from optimal pretreatment conditions generated a maximum glucose yield of 156.65 ± 7.66 mg/g MCR. Untreated and pretreated MCRs were successfully characterized by scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The pretreated MCR exhibited increased clear pores and incomplete structure. Moreover, compared with untreated biomass, decreased lignin, decreased hemicellulose, increased surface area, and cellulose crystallinity were observed. Thus, [Emim][OAc] pretreatment is a promising alternative approach for higher glucose production from MCR.
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Affiliation(s)
- Tokla Eom
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand
| | - Jantiya Isanapong
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand
| | - Pisist Kumnorkaew
- Innovative Nanocoating Research Team, National Nanotechnology Center, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Malinee Sriariyanun
- Biorefinery and Process Automation Engineering Center, Department of Chemical and Process Engineering, TGGS, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand
| | - Peerapong Pornwongthong
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand.
- Food and Agro-Industry Research Center, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand.
- Agritech and Innovation Center, King Mongkut's University of Technology North Bangkok Techno Park, Bangkok, Thailand.
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Zeng D, Zhang Y, Ma X, Li J, Yin F, Li D, Bie W. Biosynthesis of poly(β-L-malic acid) from rubberwood enzymatic hydrolysates in co-fermentation by Aureobasidium pullulans. Int J Biol Macromol 2024; 257:128605. [PMID: 38061508 DOI: 10.1016/j.ijbiomac.2023.128605] [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: 07/08/2023] [Revised: 11/27/2023] [Accepted: 12/02/2023] [Indexed: 01/26/2024]
Abstract
Co-fermentation of multiple substrates has emerged as the most effective method to improve the yield of bioproducts. Herein, sustainable rubberwood enzymatic hydrolysates (RWH) were co-fermented by Aureobasidium pullulans to produce poly(β-L-malic acid) (PMA), and RWH + glucose/xylose was also investigated as co-substrates. Owing to low inhibitor concentration and abundant natural nitrogen source content of RWH, a high PMA yield of 0.45 g/g and a productivity of 0.32 g/L/h were obtained by RWH substrate fermentation. After optimization, PMA yields following the fermentation of RWH + glucose and RWH + xylose reached 59.92 g/L and 53.71 g/L, respectively, which were 52 % and 36 % higher than that after the fermentation of RWH. RWH + glucose more significantly affected the correlation between PMA yield and substrate concentration than RWH + xylose. The results demonstrated that the co-fermentation of RWH co-substrate is a promising method for the synthesis of bioproducts.
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Affiliation(s)
- Dongdong Zeng
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China
| | - Yutian Zhang
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China
| | - Xiaojun Ma
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China.
| | - Jianing Li
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, PR China
| | - Fen Yin
- College of Mechanical Engineering, Qinghai University, Xining 810016, PR China
| | - Dongna Li
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China
| | - Wenxuan Bie
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, PR China
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Zhao ZM, Yu W, Huang C, Xue H, Li J, Zhang D, Li G. Steam explosion pretreatment enhancing enzymatic digestibility of overground tubers of tiger nut ( Cyperus esculentus L.). Front Nutr 2023; 9:1093277. [PMID: 36687667 PMCID: PMC9852858 DOI: 10.3389/fnut.2022.1093277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/13/2022] [Indexed: 01/09/2023] Open
Abstract
Introduction Tiger nut (TN) is recognized as a high potential plant which can grow in well-drained sandy or loamy soils and provide food nutrients. However, the overground tubers of TN remain unutilized currently, which limits the value-added utilization and large-area cultivation of this plant. Methods In the present study, the overground tubers of TN were subjected to enzymatic hydrolysis to produce fermentable sugars for biofuels production. Steam explosion (SE) was applied to modify the physical-chemical properties of the overground tubers of TN for enhancing its saccharification. Results and discussion Results showed that SE broke the linkages of hemicellulose and lignin in the TN substrates and increased cellulose content through removal of hemicellulose. Meanwhile, SE cleaved inner linkages within cellulose molecules, reducing the degree of polymerization by 32.13-77.84%. Cellulose accessibility was significantly improved after SE, which was revealed visibly by the confocal laser scanning microscopy imaging techniques. As a result, enzymatic digestibility of the overground tubers of TN was dramatically enhanced. The cellulose conversion of the SE treated TN substrates reached 38.18-63.97%, which was 2.5-4.2 times higher than that without a SE treatment. Conclusion Therefore, SE pretreatment promoted saccharification of the overground tubers of TN, which paves the way for value-added valorization of the TN plants.
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Affiliation(s)
- Zhi-Min Zhao
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China,Inner Mongolia Key Laboratory of Environmental Pollution Control & Wastes Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Wenqing Yu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Caitong Huang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Huiting Xue
- College of Basic Medicine, Inner Mongolia Medical University, Hohhot, China
| | - Juan Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Dejian Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China,Dejian Zhang ✉
| | - Guanhua Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China,*Correspondence: Guanhua Li ✉
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Charnnok B, Laosiripojana N. Integrative process for rubberwood waste digestibility improvement and levulinic acid production by hydrothermal pretreatment with acid wastewater conversion process. BIORESOURCE TECHNOLOGY 2022; 360:127522. [PMID: 35764279 DOI: 10.1016/j.biortech.2022.127522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
This study aimed to develop an integrative process for converting rubberwood waste into sugars, methane, and levulinic acid. Sulfuric acid pretreatment at pH 2.5 yielded the highest glucose of 182.5 g/kg rubberwood waste. Replacing the acid solution with sulfuric acid wastewater led to 11.0% lower glucose yield than that obtained using sulfuric acid. However, the cost reduction equals the difference in revenues between sulfuric acid wastewater and sulfuric acid, resulting in similar total cost and revenue. Furthermore, thermal reactions of the process water resulted in the highest yield of levulinic acid, 17.9% at 220 °C. Meanwhile, anaerobic digestibility of enzymatic hydrolysis residue was increased using inoculum from a digester treating pig farm wastewater owing to the acetoclastic pathway. These co-products potentially returned additional revenues, accounting for 45.8% of the total revenue. These findings highlight the potential pathway for valorization of rubberwood waste via the integrated approach with acid wastewater pretreatment.
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Affiliation(s)
- Boonya Charnnok
- Department of Specialized Engineering, Energy Technology Program, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai District, Songkhla Province 90110, Thailand; Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand.
| | - Navadol Laosiripojana
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok 10140, Thailand
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Dong L, Gao Y, Guo H, Zhang H, Lai Q, Diao Q. Pretreatments of Broussonetia papyrifera: In vitro assessment on gas and methane production, fermentation characteristic, and methanogenic archaea profile. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2020; 35:1367-1378. [PMID: 33171029 PMCID: PMC9449391 DOI: 10.5713/ajas.20.0503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/08/2020] [Indexed: 11/27/2022]
Abstract
Objective The present study was conducted to examine the gas production, fermentation characteristics, nutrient degradation, and methanogenic community composition of a rumen fluid culture with Broussonetia papyrifera (B. papyrifera) subjected to ensiling or steam explosion (SE) pretreatment. Methods Fresh B. papyrifera was collected and pretreated by ensiling or SE, which was then fermented with ruminal fluids as ensiled B. papyrifera group, steam-exploded B. papyrifera group, and untreated B. papyrifera group. The gas and methane production, fermentation characteristics, nutrient degradation, and methanogenic community were determined during the fermentation. Results Cumulative methane production was significantly improved with SE pretreatment compared with ensiled or untreated biomass accompanied with more volatile fatty acids production. After 72 h incubation, SE and ensiling pretreatments decreased the acid detergent fiber contents by 39.4% and 22.9%, and neutral detergent fiber contents by 10.6% and 47.2%, respectively. Changes of methanogenic diversity and abundance of methanogenic archaea corresponded to the variations in fermentation pattern and methane production. Conclusion Compared with ensiling pretreatment, SE can be a promising technique for the efficient utilization of B. papyrifera, which would contribute to sustainable livestock production systems.
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Affiliation(s)
- Lifeng Dong
- Feed Research Institute, Chinese Academy of Agricultural Sciences/Sino-US Joint Lab on Nutrition and Metabolism of Ruminant/CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Beijing, 100081, China
| | - Yanhua Gao
- College of Life Science and Technology, South Minzu University, Chengdu 610041, China
| | - Huiping Guo
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Hongsen Zhang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Qi Lai
- College of Life Science and Technology, South Minzu University, Chengdu 610041, China
| | - Qiyu Diao
- Feed Research Institute, Chinese Academy of Agricultural Sciences/Sino-US Joint Lab on Nutrition and Metabolism of Ruminant/CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Beijing, 100081, China
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Wang X, Lei Z, Shimizu K, Zhang Z, Lee DJ. Improved methane production from corn straw using anaerobically digested sludge pre-augmented by nanobubble water. BIORESOURCE TECHNOLOGY 2020; 311:123479. [PMID: 32413644 DOI: 10.1016/j.biortech.2020.123479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/01/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Nanobubble water (NBW) has been proven to efficiently improve methane production from organic solid wastes. However, the increase in reactor volume due to addition of NBW hinders its practical applications. In this study, anaerobically digested sludge was first pre-augmented by N2-NBW and O2-NBW using corn straw as sole substrate for methane production with electron transfer activity being monitored. 20%, 33% and 38% of cellulose and 29%, 35% and 35% of hemicellulose were reduced respectively from the control, N2-NBW and O2-NBW pre-augmented sludge reactors. N2-NBW and O2-NBW pre-augmented sludge reactors achieved methane yields of 127 and 142 mL/g-VS, about 10% and 22% higher than that from the control. Results show that use of NBW pre-augmented anaerobically digested sludge as inoculum can remarkably enhance methane yield from corn straw, providing a novel concept for NBW-based anaerobic digestion system with no increase of reactor volume and construction cost in practice.
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Affiliation(s)
- Xuezhi Wang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Zhongfang Lei
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
| | - Kazuya Shimizu
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Zhenya Zhang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
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Millati R, Wikandari R, Ariyanto T, Putri RU, Taherzadeh MJ. Pretreatment technologies for anaerobic digestion of lignocelluloses and toxic feedstocks. BIORESOURCE TECHNOLOGY 2020; 304:122998. [PMID: 32107151 DOI: 10.1016/j.biortech.2020.122998] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/04/2020] [Accepted: 02/08/2020] [Indexed: 05/12/2023]
Abstract
Several feedstocks for anaerobic digestion (AD) have challenges that hamper the success of AD with their low accessible surface area, biomass recalcitrance, and the presence of natural inhibitors. This paper presents different types of pretreatment to address those individual challenges and how they contribute to facilitate AD. Organosolv and ionic liquid pretreatments are effective to remove lignin without a significant defect on lignin structures. To deal with accessible surface area and crystallinity, comminution, steam explosion, pretreatment using N-methyl-morpholine-N-oxide methods are suggested. Moreover, solid extraction, simple aeration, and biological treatments are capable in removing natural inhibitors. Up to date, methods like comminution, thermal process, and grinding are more preferable to be scaled-up.
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Affiliation(s)
- Ria Millati
- Department of Food and Agricultural Product Technology, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.
| | - Rachma Wikandari
- Department of Food and Agricultural Product Technology, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Teguh Ariyanto
- Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Rininta Utami Putri
- Department of Food and Agricultural Product Technology, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
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Charnnok B, Sawangkeaw R, Chaiprapat S. Integrated process for the production of fermentable sugar and methane from rubber wood. BIORESOURCE TECHNOLOGY 2020; 302:122785. [PMID: 31981804 DOI: 10.1016/j.biortech.2020.122785] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Pretreatment is required for the enhancement of the bioconversion of lignocellulosic biomass. This study aimed to develop an integrated process producing efficient biochemical conversion of rubber wood waste (RW) into co-biofuels, fermentable sugar and methane. The glucan conversion was enhanced to 93.8% with temperature (210 °C) and delignification by organosolv pretreatment (OS). Thereafter, anaerobic digestion of the residue left after enzymatic hydrolysis was conducted which further improved the methane yield (205.5 LCH4/kg VS) by 33% over hydrothermal pretreatment (154.3 LCH4/kg VS). Delignification during OS plays a key role in improving the degradability of RW resulting in efficient energy recovery (11.23 MJ/kg pretreated RW) which was clearly higher than an integrated process based on hydrothermal (HT) or HT plus process water. Scaled up to a biorefinery, the integrated process based on OS would economically produce fermentable sugar while other value-added chemicals might be produced from the process water.
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Affiliation(s)
- Boonya Charnnok
- Interdisciplinary Graduate School of Energy Systems, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand; Energy Technology Research Center, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand.
| | - Ruengwit Sawangkeaw
- Research Unit in Bioconversion/Bioseparation for Value-Added Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, Thailand
| | - Sumate Chaiprapat
- Interdisciplinary Graduate School of Energy Systems, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand; Environmental Engineering, Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand
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Pachapur VL, Kaur Brar S, Le Bihan Y. Integrated wood biorefinery: Improvements and tailor-made two-step strategies on hydrolysis techniques. BIORESOURCE TECHNOLOGY 2020; 299:122632. [PMID: 31889603 DOI: 10.1016/j.biortech.2019.122632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/13/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
This study categorized different pretreatment methods into mild (below 120 °C), normal (120-200 °C) and extreme conditions (above 200 °C) for selective approach with efficient wood hydrolysis for direct market applications. The model two-step strategy of selective normal-hydrolysis: steam explosion (170 °C for 30 min) with concentrating normal-hydrolysis: organosolv at (160 °C for 20 min) on hard/softwood will delivery individual fractions of hemicellulose, lignin, and cellulose with recovery rate above 95%. The first step releases C5 sugars with a recovery rate of 80% followed by the second step for C6 sugars with 95% rate and direct use of reduced sugars into C5 and C6 value-added products. The categorized conditions will ease the selection of the pretreatment method for the wood type and model strategy will increase the hydrolysis rate with greater simplicity and validity. The integrated wood biorefinery with two-step treatment is an in-house and closed-loop with endless industrial applications.
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Affiliation(s)
- Vinayak Laxman Pachapur
- Institut national de la recherche scientifique, Centre - Eau Terre Environnement, 490, Rue de la Couronne, Québec, QC G1K 9A9, Canada; Centre de recherche industrielle du Québec (CRIQ), Québec, QC, Canada.
| | - Satinder Kaur Brar
- Institut national de la recherche scientifique, Centre - Eau Terre Environnement, 490, Rue de la Couronne, Québec, QC G1K 9A9, Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario M3J 1P3, Canada.
| | - Yann Le Bihan
- Centre de recherche industrielle du Québec (CRIQ), Québec, QC, Canada
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