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Song Y, Pei L, Chen G, Mu L, Yan B, Li H, Zhou T. Recent advancements in strategies to improve anaerobic digestion of perennial energy grasses for enhanced methane production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160552. [PMID: 36511320 DOI: 10.1016/j.scitotenv.2022.160552] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 11/10/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Perennial energy grasses (PEGs) are supposed to be a momentous heading to the development of biomass energy on account of their characteristic superiorities of high yield, strong adaptability and no direct competition with food crops. Anaerobic digestion of PEGs with great biogas-producing potential occupies an irreplaceable status despite a variety of pathways for conversion to renewable energy. However, efficient digestion of PEGs suffers from severe challenges in connection with feedstock properties such as recalcitrant structures. This review highlights recent research in anaerobic digestion of PEGs and focuses on essential aspects enhancing anaerobic digestion performance: types and properties of grasses, diverse pretreatments, various co-feedstocks for co-digestion, dosing of different additives, and improvements in reactors. General discussions on the future prospects of anaerobic digestion of PEGs are proposed. Overcoming knowledge gaps and technical limitations will facilitate further application of PEGs on an industrial scale.
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Affiliation(s)
- Yingjin Song
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Legeng Pei
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Guanyi Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China; School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China.
| | - Lan Mu
- School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Hongji Li
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Teng Zhou
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
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Feng S, Ngo HH, Guo W, Chang SW, Nguyen DD, Liu Y, Zhang S, Phong Vo HN, Bui XT, Ngoc Hoang B. Volatile fatty acids production from waste streams by anaerobic digestion: A critical review of the roles and application of enzymes. BIORESOURCE TECHNOLOGY 2022; 359:127420. [PMID: 35690239 DOI: 10.1016/j.biortech.2022.127420] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Volatile fatty acids (VFAs) produced from organic-rich wastewater by anaerobic digestion attract attention due to the increasing volatile fatty acids market, sustainability and environmentally friendly characteristics. This review aims to give an overview of the roles and applications of enzymes, a biocatalyst which plays a significant role in anaerobic digestion, to enhance volatile fatty acids production. This paper systematically overviewed: (i) the enzymatic pathways of VFAs formation, competition, and consumption; (ii) the applications of enzymes in VFAs production; and (iii) feasible measures to boost the enzymatic processes. Furthermore, this review presents a critical evaluation on the major obstacles and feasible future research directions for the better applications of enzymatic processes to promote VFAs production from wastewater.
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Affiliation(s)
- Siran Feng
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia; Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
| | - Wenshan Guo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Soon Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Dinh Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Yi Liu
- Department of Environmental Science and Engineering, Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Shicheng Zhang
- Department of Environmental Science and Engineering, Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Hoang Nhat Phong Vo
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Xuan Thanh Bui
- Key Laboratory of Advanced Waste Treatment Technology, Faculty of Environment & Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University Ho Chi Minh (VNU-HCM), Ho Chi Minh City 70000, Viet Nam
| | - Bich Ngoc Hoang
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
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Lu X, Guo H, Chen J, Wang D, Lee AF, Gu X. Selective Catalytic Transfer Hydrogenation of Lignin to Alkyl Guaiacols Over NiMo/Al-MCM-41. CHEMSUSCHEM 2022; 15:e202200099. [PMID: 35192235 DOI: 10.1002/cssc.202200099] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/21/2022] [Indexed: 06/14/2023]
Abstract
Efficient deoxygenation of lignin-derived bio-oils is central to their adoption as precursors to sustainable liquid fuels in place of current fossil resources. In-situ catalytic transfer hydrogenation (CTH), using isopropanol and formic acid as solvent and in-situ hydrogen sources, was demonstrated over metal-doped and promoted MCM-41 for the depolymerization of oxygen-rich (35.85 wt%) lignin from Chinese fir sawdust (termed O-lignin). A NiMo/Al-MCM-41 catalyst conferred an optimal lignin-derived oil yield of 61.6 wt% with a comparatively low molecular weight (Mw =542 g mol-1 , Mn =290 g mol-1 ) and H/C ratio of 1.39. High selectivity to alkyl guaiacols was attributed to efficient in-situ hydrogen transfer from isopropanol/formic acid donors, and a synergy between surface acid sites in the Al-doped MCM-41 support and reducible Ni/Mo species, which improved the chemical stability and quality of the resulting lignin-derived bio-oils.
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Affiliation(s)
- Xinyu Lu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, No. 159 Longpan Road, Nanjing, 210037, P. R. China
| | - Haoquan Guo
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, No. 159 Longpan Road, Nanjing, 210037, P. R. China
| | - Jiajia Chen
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, No. 159 Longpan Road, Nanjing, 210037, P. R. China
| | - Duoying Wang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, No. 159 Longpan Road, Nanjing, 210037, P. R. China
| | - Adam F Lee
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne, VIC3000, Australia
| | - Xiaoli Gu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, No. 159 Longpan Road, Nanjing, 210037, P. R. China
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Wang Y, Yang Y, Qu Y, Zhang J. Selective removal of lignin with sodium chlorite to improve the quality and antioxidant activity of xylo-oligosaccharides from lignocellulosic biomass. BIORESOURCE TECHNOLOGY 2021; 337:125506. [PMID: 34320775 DOI: 10.1016/j.biortech.2021.125506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
As a key anti-degradation barrier that restricts the biotransformation of lignocellulose, the presence of lignin usually severely affects the quality of the extracted xylo-oligosaccharides (XOS). Herein, this study proposed a practical route to improve the quality and antioxidant activity of XOS extracted from lignocellulosic biomass via selective removal of lignin. The highest delignification of 92.6% was successfully achieved with 8% sodium chlorite at 75°C for 2 h. An ideal hemicellulose sample with a purity of 86.1% was obtained by selective removal of lignin. A high-quality XOS sample with a purity of 96.3%, a yield of 77.4%, and a color value of 814 was obtained by separating and purifying the enzymatic hydrolysate. Antioxidant activity assay showed that the highest radical scavenging activity of XOS was 87.3%. Importantly, this study provide a feasible and effective route for the lignocellulosic biomass utilization strategy based on the selective removal of lignin.
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Affiliation(s)
- Yuehai Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongqing Yang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongshui Qu
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Jie Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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Zhang R, Lv C, Lu J. Studies on laccase mediated conversion of lignin from ginseng residues for the production of sugars. BIORESOURCE TECHNOLOGY 2020; 317:123945. [PMID: 32805484 DOI: 10.1016/j.biortech.2020.123945] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/21/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
The purpose of this study was to determine the production of sugars from ginseng residues treated with laccase. Laccase was used to degrade lignin from ginseng residues in order to increase the yield of sugars. Reaction conditions, including solid loading, pH, enzyme concentration, incubation temperature, and incubation time, were investigated and optimized. The results showed that the optimum conditions were 20% of solid loading (w/v), pH 7, 300 IU/ml, temperature of 40 °C and incubation time of 6 h. The minimum residual lignin obtained was 59.89%. The results also showed that 56.58% sugars including 12.04% water soluble polysaccharides (WSP), 16.24% water insoluble polysaccharides (WIP) and 5.08% reducing sugar were afforded from delignify substance. Chemical characters of these sugars were analyzed. Pretreat of laccase delignification for sugars production is expected to be applied to other herbal residues.
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Affiliation(s)
- Ruiqi Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, China
| | - Chongning Lv
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, China; Liaoning Provincial Key Laboratory of TCM Resources Conservation and Development, Shenyang 110006, China
| | - Jincai Lu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, China; Liaoning Provincial Key Laboratory of TCM Resources Conservation and Development, Shenyang 110006, China.
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Wu P, Li L, Sun Y, Song B, Yu Y, Liu H. Near complete valorisation of Hybrid pennisetum to biomethane and lignin nanoparticles based on gamma-valerolactone/water pretreatment. BIORESOURCE TECHNOLOGY 2020; 305:123040. [PMID: 32114303 DOI: 10.1016/j.biortech.2020.123040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/13/2020] [Accepted: 02/15/2020] [Indexed: 05/15/2023]
Abstract
This study is the first to integrate gamma-valerolactone/water (GVL/water) pretreatment with anaerobic digestion (AD) for biogas production and lignin nanoparticles (LNPs) synthesis. The hydrothermal treatment was conducted at 135 to 180 °C with GVL at 0 to 90%. After pretreatment, the compositions of hybrid pennisetum were changed with the removal of lignin, hemicellulose, and cellulose to different extent. Subsequent anaerobic digestion achieved a maximal specific methane yield of 228.00 ± 4.37 mL/g VS, compared with that at 165.11 ± 1.99 mL/g VS for the control. The highest actual methane yield (150 mL/g RM) was achieved by pretreatment with GVL/water (50/50) at 150 °C for 90 min. LNPs at 200 to 2000 nm were synthesized from the liquid waste with a yield at ~4 mg/mL. The mass balance of this integrated method was discussed. In general, the maximal valorisation of hybrid pennisetum was achieved based on a catalyst-free of GVL/water pretreatment.
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Affiliation(s)
- Peiwen Wu
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Ministry of Education for Water Quality Security and Protection in Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Lianhua Li
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Yongming Sun
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Bing Song
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Scion, 49 Sala Street, Private Bag 3020, Rotorua 3046, New Zealand.
| | - Yun Yu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huping Liu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
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