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Zbair M, Limousy L, Drané M, Richard C, Juge M, Aemig Q, Trably E, Escudié R, Peyrelasse C, Bennici S. Integration of Digestate-Derived Biochar into the Anaerobic Digestion Process through Circular Economic and Environmental Approaches-A Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3527. [PMID: 39063819 PMCID: PMC11278828 DOI: 10.3390/ma17143527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 07/10/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024]
Abstract
The growing energy consumption and the need for a circular economy have driven considerable interest in the anaerobic digestion (AD) of organic waste, offering potential solutions through biogas and digestate production. AD processes not only have the capability to reduce greenhouse gas emissions but also contribute to the production of renewable methane. This comprehensive review aims to consolidate prior research on AD involving different feedstocks. The principles of AD are explored and discussed, including both chemical and biological pathways and the microorganisms involved at each stage. Additionally, key variables influencing system performance, such as temperature, pH, and C/N ratio are also discussed. Various pretreatment strategies applied to enhance biogas generation from organic waste in AD are also reviewed. Furthermore, this review examines the conversion of generated digestate into biochar through pyrolysis and its utilization to improve AD performance. The addition of biochar has demonstrated its efficacy in enhancing metabolic processes, microorganisms (activity and community), and buffering capacity, facilitating Direct Interspecies Electron Transfer (DIET), and boosting CH4 production. Biochar also exhibits the ability to capture undesirable components, including CO2, H2S, NH3, and siloxanes. The integration of digestate-derived biochar into the circular economy framework emerges as a vital role in closing the material flow loop. Additionally, the review discusses the environmental benefits derived from coupling AD with pyrolysis processes, drawing on life cycle assessment investigations. Techno-economic assessment (TEA) studies of the integrated processes are also discussed, with an acknowledgment of the need for further TEA to validate the viability of integrating the biochar industry. Furthermore, this survey examines the techno-economic and environmental impacts of biochar production itself and its potential application in AD for biogas generation, aiming to establish a more cost-effective and sustainable integrated system.
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Affiliation(s)
- Mohamed Zbair
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; (M.Z.); (M.D.); (S.B.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Lionel Limousy
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; (M.Z.); (M.D.); (S.B.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Méghane Drané
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; (M.Z.); (M.D.); (S.B.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Charlotte Richard
- ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France; (C.R.); (M.J.); (Q.A.)
| | - Marine Juge
- ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France; (C.R.); (M.J.); (Q.A.)
| | - Quentin Aemig
- ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France; (C.R.); (M.J.); (Q.A.)
| | - Eric Trably
- INRAE, University of Montpellier, LBE, 102 Av. des Etangs, 11100 Narbonne, France; (E.T.); (R.E.)
| | - Renaud Escudié
- INRAE, University of Montpellier, LBE, 102 Av. des Etangs, 11100 Narbonne, France; (E.T.); (R.E.)
| | | | - Simona Bennici
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; (M.Z.); (M.D.); (S.B.)
- Université de Strasbourg, 67000 Strasbourg, France
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Xing BS, Chang XL, Zhang Y, Cao S, Tang XF, Han YC, Li YY, Wang XC, Chen R. A compound enzyme as an additive to a continuous anaerobic dynamic membrane bioreactor for enhanced lignocellulose removal from codigestion: Performance, membrane characteristics and microorganisms. BIORESOURCE TECHNOLOGY 2024; 402:130772. [PMID: 38703959 DOI: 10.1016/j.biortech.2024.130772] [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: 02/26/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
To explore the enzyme-enhanced strategy of a continuous anaerobic dynamic membrane reactor (AnDMBR), the anaerobic codigestion system of food waste and corn straw was first operated stably, and then the best combination of compound enzymes (laccase, endo-β-1,4-glucanase, xylanase) was determined via a series of batch trials. The results showed that the methane yield (186.8 ± 19.9 mL/g VS) with enzyme addition was 12.2 % higher than that without enzyme addition. Furthermore, the removal rates of cellulose, hemicellulose and lignin increased by 31 %, 36 % and 78 %, respectively. In addition, dynamic membranes can form faster and more stably with enzyme addition. The addition of enzymes changed the structure of microbial communities while maintaining sufficient hydrolysis bacteria (Bacteroidetes), promoting the proliferation of Proteobacteria as a dominant strain and bringing stronger acetylation ability. In summary, the compound enzyme strengthening strategy successfully improved the methane production, dynamic membrane effect, and degradation rate of lignocellulose in AnDMBR.
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Affiliation(s)
- Bao-Shan Xing
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 9808579, Japan.
| | - Xiang-Lin Chang
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Yi Zhang
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Sifan Cao
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Xi-Fang Tang
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Yong-Chen Han
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 9808579, Japan
| | - Xiaochang C Wang
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Rong Chen
- State International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, MOE Key Lab of Northwest Water Resource, Environment and Ecology, Shaanxi Provincial Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Provincial Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
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Govindaraj O, Gopal NO, ASM R, Uthandi S. Influence of Novel EnZolv Pretreatment on the Release of Reducing Sugar and Proximate Content of Banana Fiber. Indian J Microbiol 2023; 63:693-701. [PMID: 38031602 PMCID: PMC10682306 DOI: 10.1007/s12088-023-01130-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 10/21/2023] [Indexed: 12/01/2023] Open
Abstract
Lignocellulosic biomass (LCB) from agriculture residues has gained a lot of attention in recent years for its conversion to useful by-products. The one drawback that the conversion of biomass faces is its recalcitrant nature which can be overcome by effective pretreatment technology. One such process is the EnZolv, a novel pretreatment technique used for delignification of biomass and it was recognized as an eco-friendly approach. The main objective of our present study is to optimize the novel EnZolv process parameters for enhanced release of reducing sugar from banana fiber. Banana fiber pre-optimization for EnZolv pretreated at 100% moisture content, incubated at 40 °C temperature, with an enzyme load of 50 U·g-1 of biomass for an incubation time of 5 h at a shaking speed of 100 rpm yielded enhanced sugar release of 1.7 mg·mL-1. The effect of pretreatment on proximate composition results in a decrease in the volatile matter (53%) and moisture percentage (1.07%) and an increase in the other parameters such as ash content (12%) and fixed carbon content (34%) under the optimized condition. A significantly higher release of phenol content 1264 µg·mL-1 equivalent to gallic acid suggests that EnZolv pretreatment confirms the degradation of lignin content in the biomass. Supplementary Information The online version contains supplementary material available at 10.1007/s12088-023-01130-4.
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Affiliation(s)
- Oviya Govindaraj
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu 641003 India
| | - Nellaiappan Olaganathan Gopal
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu 641003 India
| | - Raja ASM
- ICAR-Central Institute for Research on Cotton Technology, Adenwala Road, Matunga, Mumbai, 400019 India
| | - Sivakumar Uthandi
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu 641003 India
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Gao Q, Li L, Wang K, Zhao Q. Mass Transfer Enhancement in High-Solids Anaerobic Digestion of Organic Fraction of Municipal Solid Wastes: A Review. Bioengineering (Basel) 2023; 10:1084. [PMID: 37760186 PMCID: PMC10525600 DOI: 10.3390/bioengineering10091084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/02/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
The increasing global population and urbanization have led to a pressing need for effective solutions to manage the organic fraction of municipal solid waste (OFMSW). High-solids anaerobic digestion (HS-AD) has garnered attention as a sustainable technology that offers reduced water demand and energy consumption, and an increased biogas production rate. However, challenges such as rheology complexities and slow mass transfer hinder its widespread application. To address these limitations, this review emphasizes the importance of process optimization and the mass transfer enhancement of HS-AD, and summarizes various strategies for enhancing mass transfer in the field of HS-AD for the OFMSW, including substrate pretreatments, mixing strategies, and the addition of biochar. Additionally, the incorporation of innovative reactor designs, substrate pretreatment, the use of advanced modeling and simulation techniques, and the novel conductive materials need to be investigated in future studies to promote a better coupling between mass transfer and methane production. This review provides support and guidance to promote HS-AD technology as a more viable solution for sustainable waste management and resource recovery.
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Affiliation(s)
| | | | | | - Qingliang Zhao
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
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Vasco-Correa J, Zuleta-Correa A, Gómez-León J, Pérez-Taborda JA. Advances in microbial pretreatment for biorefining of perennial grasses. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12639-5. [PMID: 37410135 DOI: 10.1007/s00253-023-12639-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/09/2023] [Accepted: 06/15/2023] [Indexed: 07/07/2023]
Abstract
Perennial grasses are potentially abundant sources of biomass for biorefineries, which can produce high yields with low input requirements, and many added environmental benefits. However, perennial grasses are highly recalcitrant to biodegradation and may require pretreatment before undergoing many biorefining pathways. Microbial pretreatment uses the ability of microorganisms or their enzymes to deconstruct plant biomass and enhance its biodegradability. This process can enhance the enzymatic digestibility of perennial grasses, enabling saccharification with cellulolytic enzymes to produce fermentable sugars and derived fermentation products. Similarly, microbial pretreatment can increase the methanation rate when the grasses are used to produce biogas through anaerobic digestion. Microorganisms can also increase the digestibility of the grasses to improve their quality as animal feed, enhance the properties of grass pellets, and improve biomass thermochemical conversion. Metabolites produced by fungi or bacteria during microbial pretreatment, such as ligninolytic and cellulolytic enzymes, can be further recovered as added-value products. Additionally, the action of the microorganisms can release chemicals with commercialization potential, such as hydroxycinnamic acids and oligosaccharides, from the grasses. This review explores the recent advances and remaining challenges in using microbial pretreatment for perennial grasses with the goal of obtaining added-value products through biorefining. It emphasizes recent trends in microbial pretreatment such as the use of microorganisms as part of microbial consortia or in unsterilized systems, the use and development of microorganisms and consortia capable of performing more than one biorefining step, and the use of cell-free systems based on microbial enzymes. KEY POINTS: • Microorganisms or enzymes can reduce the recalcitrance of grasses for biorefining • Microbial pretreatment effectiveness depends on the grass-microbe interaction • Microbial pretreatment can generate value added co-products to enhance feasibility.
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Affiliation(s)
- Juliana Vasco-Correa
- Department of Agricultural and Biological Engineering, Penn State University, University Park, PA, USA.
- Sociedad Colombiana de Ingeniería Física (SCIF), Pereira, Risaralda, Colombia.
| | - Ana Zuleta-Correa
- Marine Bioprospecting Line-BIM, Marine and Coastal Research Institute "José Benito Vives de Andréis" (INVEMAR), Santa Marta D.T.C.H, Magdalena, Colombia
| | - Javier Gómez-León
- Marine Bioprospecting Line-BIM, Marine and Coastal Research Institute "José Benito Vives de Andréis" (INVEMAR), Santa Marta D.T.C.H, Magdalena, Colombia
| | - Jaime Andrés Pérez-Taborda
- Sociedad Colombiana de Ingeniería Física (SCIF), Pereira, Risaralda, Colombia
- Grupo de Nanoestructuras y Física Aplicada (NANOUPAR), Universidad Nacional de Colombia Sede De La Paz, La Paz, Cesar, Colombia
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Sáenz de Miera B, Cañadas R, Santiago R, Díaz I, González-Miquel M, González EJ. A pathway to improve detoxification processes by selective extraction of phenols and sugars from aqueous media using sustainable solvents. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wu J, Li Z, Wang J, Gan H, Wang J, Jin C, Yan G, Yu C, Zhou Y, Wang W. Effects of laccase and cellulase on saccharification of barley malt. Heliyon 2022; 8:e10744. [PMID: 36177241 PMCID: PMC9513782 DOI: 10.1016/j.heliyon.2022.e10744] [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: 07/05/2022] [Revised: 07/14/2022] [Accepted: 09/19/2022] [Indexed: 11/24/2022] Open
Abstract
Improving saccharification of barley malt is beneficial to promoting economic benefits of beer brewers, but there are few detailed reports on the application of cellulase and laccase in barley malt. So, barley malt was pretreated by cellulase and laccase, and the malt wort and brewer's spent grains were analyzed by HPLC, FTIR and SEM in this study. The concentration of malt wort was increased significantly to 8.1 (° Bx), which increased by 28.6% after barley malt was pretreated by cellulase, but laccase could not improve saccharification of barley malt. Through analysis of sugar in malt wort and cellulose and lignin components as well as physical and chemical structures of brewer's spent grains, the increase in sugar content in malt wort was mainly due to the increase in glucose because of hydrolysis of cellulose in barley malt by cellulase. Furtherly, laccase and cellulase should have a mutual inhibition when they are pretreated simultaneously.
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Affiliation(s)
- Jianguo Wu
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
- Corresponding author.
| | - Ziyi Li
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Jiapei Wang
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Huanwei Gan
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Jiandong Wang
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Ci Jin
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Guilong Yan
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Cannan Yu
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Yuzhen Zhou
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
| | - Wei Wang
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Changjiang West Road 111, Huai'an 223300, China
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Pre-treatment of lignocellulosic materials by enzymatic mixture to enhance biogas production. ACTA CHIMICA SLOVACA 2022. [DOI: 10.2478/acs-2022-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The aim of this study was to evaluate the effect of an enzymatic mixture on the increase of biogas production from lignocellulosic materials as rapeseed straw, maize waste, and wheat straw. For efficient application of the enzymatic mixture, conditions of its use were optimized regarding 50 °C, pH 7 and an enzyme dose of 0.25 % w/v. Biogas potential test confirmed positive effect of the enzymatic mixture on anaerobic digestion of already thermally and alkali pre-treated lignocellulosic materials, as significantly higher biogas production was observed after the enzymatic mixture addition for all monitored substrates. Addition of the enzymatic mixture to the most used substrate at biogas plants — maize silage, had also positive effect on biogas production during the biogas potential test. This fact was not proven during long-term operations of the reactors as the values of total cumulative biogas productions for the whole monitored period from reactors for anaerobic digestion of maize silage with and without addition of enzymatic mixture did not differ significantly.
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Dharma Patria R, Rehman S, Vuppaladadiyam AK, Wang H, Lin CSK, Antunes E, Leu SY. Bioconversion of food and lignocellulosic wastes employing sugar platform: A review of enzymatic hydrolysis and kinetics. BIORESOURCE TECHNOLOGY 2022; 352:127083. [PMID: 35364238 DOI: 10.1016/j.biortech.2022.127083] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Bioenergy and biochemicals can be sustainably produced through fermentation and anaerobic digestion (AD). However, this bioconversion processes could be more economical if the hydrolysis rates of substrates in bioreactors can be accelerated. In this review, the feasibilities of including enzymatic hydrolysis (EH) in various bioconversion systems were studied to facilitate the biological synergy. The reaction kinetics of EH in bioconversion systems comparing pretreated lignocellulosic biomass (LCB) and food waste (FW) substrates were reviewed. Possible strategies to improve the hydrolysis efficiency were explored, including co-cultivation during enzyme production and replacement of pure enzyme with on-site produced fungal mash during EH. Key insights into improvement of current AD and fermentation technologies were summarized and further formed into suggestions of future directions in techno-economic feasibility of biorefinery using mixture of the first-generation food crop feedstock with FW; and/or co-digestion of FW with LCB.
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Affiliation(s)
- Raffel Dharma Patria
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Shazia Rehman
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Arun K Vuppaladadiyam
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Huaimin Wang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Hong Kong
| | - Elsa Antunes
- College of Science and Engineering, James Cook University, Australia
| | - Shao-Yuan Leu
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong; Research Institute for Future Food, The Hong Kong Polytechnic University, Hong Kong; Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hong Kong.
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Abstract
Nowadays, the climate mitigation policies of EU promote the energy production based on renewable resources. Anaerobic digestion (AD) constitutes a biochemical process that can convert lignocellulosic materials into biogas, used for chemical products isolation or energy production, in the form of electricity, heat or fuels. Such practices are accompanied by several economic, environmental and climatic benefits. The method of AD is an effective method of utilization of several different low-value and negative-cost highly available materials of residual character, such as the lignocellulosic wastes coming from forest, agricultural or marine biomass utilization processes, in order to convert them into directly usable energy. Lignin depolymerization remains a great challenge for the establishment of a full scale process for AD of lignin waste. This review analyzes the method of anaerobic digestion (biomethanation), summarizes the technology and standards involved, the progress achieved so far on the depolymerization/pre-treatment methods of lignocellulosic bio-wastes and the respective residual byproducts coming from industrial processes, aiming to their conversion into energy and the current attempts concerning the utilization of the produced biogas. Substrates’ mechanical, physical, thermal, chemical, and biological pretreatments or a combination of those before biogas production enhance the hydrolysis stage efficiency and, therefore, biogas generation. AD systems are immensely expanding globally, especially in Europe, meeting the high demands of humans for clean energy.
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Fu B, Xiao G, Zhang Y, Yuan J. One-Pot Bioconversion of Lignin-Derived Substrates into Gallic Acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11336-11341. [PMID: 34529433 DOI: 10.1021/acs.jafc.1c03960] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lignin is regarded as the most abundant renewable aromatic compound on earth. In this study, we established Escherichia coli-based whole-cell biocatalytic systems to efficiently convert two lignin-derived substrates (ferulic acid and p-coumaric acid) to gallic acid. For the synthesis of gallic acid from ferulic acid, we used the recombinant E. coli expressing feruloyl-CoA synthetase and enoyl-CoA hydratase/aldolase from Pseudomonas putida, aldehyde dehydrogenase (HFD1) from Saccharomyces cerevisiae, vanillic acid O-demethylase (VanAB) from P. putida, and a mutant version of p-hydroxybenzoate hydroxylase (PobAY385F) from P. putida. Under the fed-batch mode, 19.57 mM gallic acid was obtained from 20 mM ferulic acid with a conversion rate of 97.9%. To achieve gallic acid synthesis from p-coumaric acid, we replaced VanAB with the two-component flavin-dependent monooxygenase (HpaBC) from E. coli. Under optimal conditions, 20 mM p-coumaric acid afforded the production of 19.96 mM gallic acid with near 100% conversion. To the best of our knowledge, our work represented the first study to develop E. coli-based whole-cell biocatalysts for the eco-friendly synthesis of gallic acid from lignin-derived renewable feedstocks.
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Affiliation(s)
- Bixia Fu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Gezhi Xiao
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Yang Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Jifeng Yuan
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
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Olatunji KO, Ahmed NA, Ogunkunle O. Optimization of biogas yield from lignocellulosic materials with different pretreatment methods: a review. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:159. [PMID: 34281615 PMCID: PMC8287798 DOI: 10.1186/s13068-021-02012-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/09/2021] [Indexed: 05/10/2023]
Abstract
Population increase and industrialization has resulted in high energy demand and consumptions, and presently, fossil fuels are the major source of staple energy, supplying 80% of the entire consumption. This has contributed immensely to the greenhouse gas emission and leading to global warming, and as a result of this, there is a tremendous urgency to investigate and improve fresh and renewable energy sources worldwide. One of such renewable energy sources is biogas that is generated by anaerobic fermentation that uses different wastes such as agricultural residues, animal manure, and other organic wastes. During anaerobic digestion, hydrolysis of substrates is regarded as the most crucial stage in the process of biogas generation. However, this process is not always efficient because of the domineering stableness of substrates to enzymatic or bacteria assaults, but substrates' pretreatment before biogas production will enhance biogas production. The principal objective of pretreatments is to ease the accessibility of the enzymes to the lignin, cellulose, and hemicellulose which leads to degradation of the substrates. Hence, the use of pretreatment for catalysis of lignocellulose substrates is beneficial for the production of cost-efficient and eco-friendly process. In this review, we discussed different pretreatment technologies of hydrolysis and their restrictions. The review has shown that different pretreatments have varying effects on lignin, cellulose, and hemicellulose degradation and biogas yield of different substrate and the choice of pretreatment technique will devolve on the intending final products of the process.
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Affiliation(s)
- Kehinde Oladoke Olatunji
- Department of Mechanical Engineering Science, Faculty of Engineering and Built Environment, University of Johannesburg, Johannesburg, South Africa.
| | - Noor A Ahmed
- Department of Mechanical Engineering Science, Faculty of Engineering and Built Environment, University of Johannesburg, Johannesburg, South Africa
| | - Oyetola Ogunkunle
- Department of Mechanical Engineering Science, Faculty of Engineering and Built Environment, University of Johannesburg, Johannesburg, South Africa
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Zhao W, Huang P, Zhu Z, Chen C, Xu X. Production of phenolic compounds and antioxidant activity via bioconversion of wheat straw by Inonotus obliquus under submerged fermentation with the aid of a surfactant. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1021-1029. [PMID: 32761948 DOI: 10.1002/jsfa.10710] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/28/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND This study investigated the effect of surfactants on wheat straw biodegradation and the growth-associated generation of exo- and endo-phenolic compounds (EPC and IPC) and antioxidant activity expression by liquid-cultured Inonotus obliquus, an edible and medicinal mushroom, also known as a white rot fungus. Changes in the chemical composition and multiscale structure of wheat straw, in the production and activity of EPC and IPC and in individual flavonoids were analyzed. RESULTS Fungal pretreatment decreased significantly the contents of all lignocellulose components, increased and enlarged substrate porosity and caused changes in the structure of wheat straw with the aid of Triton X-100. A gradual increase in EPC and IPC production was observed up to 6.4- and 1.5-fold for 9 days. The EPC obtained on day 9 showed the highest antioxidant activity (IC50 of 30.96 mg L-1 ) against 2,2-diphenyl-1-picrylhydrazyl radicals. High-performance liquid chromatographic results indicated the presence of high amounts of epicatechin-3-gallate (ECG; (374.9 mg g-1 ) and epigallocatechin-3-gallate (EGCG; 447.2 mg g-1 ) in the EPC; other polyphenols were also enhanced but to a lesser extent. Surfactant supplementation was effective in enhancing flavonoid production and in increasing antioxidant activity in EPC. CONCLUSIONS The results indicated enhanced accumulation of phenolic compounds, particularly ECG and EGCG in Inonotus obliquus via biodegradation and bioconversion of lignocellulose residues. They also indicated enhancement in the production of several flavonoids and also an increase in antioxidant activity in the product by a surfactant-treated process, which may be a useful way of exploiting underused lignocellulosic residues to various high-added-value functional ingredients. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Wei Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Panpan Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhenduo Zhu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Cui Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiangqun Xu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
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Caroca E, Serrano A, Borja R, Jiménez A, Carvajal A, Braga AFM, Rodriguez-Gutierrez G, Fermoso FG. Influence of phenols and furans released during thermal pretreatment of olive mill solid waste on its anaerobic digestion. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 120:202-208. [PMID: 33310132 DOI: 10.1016/j.wasman.2020.11.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/13/2020] [Accepted: 11/04/2020] [Indexed: 06/12/2023]
Abstract
The application of thermal pretreatments to facilitate its anaerobic digestion has associated phenols and furans production, which are commonly identified as inhibitory compounds. Phenols and furans extraction can be done from a liquid phase produced after the thermal pretreatment. In the present study this dephenolized liquid phase (DLP) showed an increase of 42% in methane yield compared to the raw liquid phase (LP) demonstrating the inhibitor character of such compounds. The main extracted phenols and furans were: 3,4-Dihydroxyphenylglycol (DHPG), Hydroxytyrosol (HT), Tyrosol (Ty), Vanillic acid (AcV), Hydroxymethylfurfural (HMF), Vanillin (V) and Furfural (F).This study also aimed to evaluate the individual effect on methane production of these specific phenols and furans the within the mixture of several ones from LP. The evaluation of the individual compounds over the methanogenesis of a dephenolized liquid phase showed that only V was inhibitory on both methane yield and methane production rate. HMF had a significantly negative effect on methane yield, but improved the methane production rate instead. Ty, F, DHPG and HT favoured the methane yield and production rate. Additionally, it was observed that negative effect of some individual phenols and furans was counteracted by the positive effect of other compounds.
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Affiliation(s)
- E Caroca
- Universidad Técnica Federico Santa María, Avenida Vicuña Mackenna 3939 San Joaquín, Santiago, Chile; Universidad Pablo de Olavide, Carretera de Utrera, 1, 41013 Seville, Spain
| | - A Serrano
- Instituto de la Grasa (CSIC), Seville, Spain; School of Civil Engineering, The University of Queensland, Campus St Lucia, Ed. 49, CP 4067, Brisbane, Australia
| | - R Borja
- Instituto de la Grasa (CSIC), Seville, Spain
| | - A Jiménez
- Universidad Pablo de Olavide, Carretera de Utrera, 1, 41013 Seville, Spain
| | - A Carvajal
- Universidad Técnica Federico Santa María, Avenida Vicuña Mackenna 3939 San Joaquín, Santiago, Chile.
| | - A F M Braga
- Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Engenharia Ambiental - Bloco 4-F, Av. João Dagnone, 1100 - Santa Angelina, 13.563-120, São Carlos, SP, Brazil
| | | | - F G Fermoso
- Instituto de la Grasa (CSIC), Seville, Spain
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15
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Microorganisms and Enzymes Used in the Biological Pretreatment of the Substrate to Enhance Biogas Production: A Review. SUSTAINABILITY 2020. [DOI: 10.3390/su12177205] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The pretreatment of lignocellulosic biomass (LC biomass) prior to the anaerobic digestion (AD) process is a mandatory step to improve feedstock biodegradability and biogas production. An important potential is provided by lignocellulosic materials since lignocellulose represents a major source for biogas production, thus contributing to the environmental sustainability. The main limitation of LC biomass for use is its resistant structure. Lately, biological pretreatment (BP) gained popularity because they are eco-friendly methods that do not require chemical or energy input. A large number of bacteria and fungi possess great ability to convert high molecular weight compounds from the substrate into lower mass compounds due to the synthesis of microbial extracellular enzymes. Microbial strains isolated from various sources are used singly or in combination to break down the recalcitrant polymeric structures and thus increase biogasgeneration. Enzymatic treatment of LC biomass depends mainly on enzymes like hemicellulases and cellulases generated by microorganisms. The articles main purpose is to provide an overview regarding the enzymatic/biological pretreatment as one of the most potent techniques for enhancing biogas production.
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Wang K, Nan X, Tong J, Zhao G, Jiang L, Xiong B. Steam Explosion Pretreatment Changes Ruminal Fermentation in vitro of Corn Stover by Shifting Archaeal and Bacterial Community Structure. Front Microbiol 2020; 11:2027. [PMID: 32983029 PMCID: PMC7483759 DOI: 10.3389/fmicb.2020.02027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 07/31/2020] [Indexed: 01/09/2023] Open
Abstract
Steam explosion is an environment-friendly pretreatment method to improve the subsequent hydrolysis process of lignocellulosic biomass. Steam explosion pretreatment improved ruminal fermentation and changed fermentation pattern of corn stover during ruminal fermentation in vitro. The study gave a comprehensive insight into how stream explosion pretreatment shifted archaeal and bacterial community structure to change ruminal fermentation in vitro of corn stover. Results showed that steam explosion pretreatment dramatically improved the apparent disappearance of dry matter (DM), neutral detergent fiber (NDF), and acid detergent fiber (ADF). Steam explosion pretreatment significantly increased the molar proportion of propionate and decreased the ratio of acetate to propionate. At archaeal level, steam explosion pretreatment significantly increased the relative abundance of Methanobrevibacter, which can effectively remove metabolic hydrogen to keep the fermentation continuing. At bacterial level, the shift in fermentation was achieved by increasing the relative abundance of cellulolytic bacteria and propionate-related bacteria, including Spirochaetes, Elusimicrobia, Fibrobacteres, Prevotella, Treponema, Ruminococcus, and Fibrobacter.
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Affiliation(s)
- Kun Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xuemei Nan
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jinjin Tong
- Beijing Key Laboratory for Dairy Cow Nutrition, Beijing University of Agriculture, Beijing, China
| | - Guangyong Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Linshu Jiang
- Beijing Key Laboratory for Dairy Cow Nutrition, Beijing University of Agriculture, Beijing, China
| | - Benhai Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Muaaz-Us-Salam S, Cleall PJ, Harbottle MJ. Application of enzymatic and bacterial biodelignification systems for enhanced breakdown of model lignocellulosic wastes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 728:138741. [PMID: 32339836 DOI: 10.1016/j.scitotenv.2020.138741] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/14/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
This paper explores the extent to which enzymatic and bacterial biodelignification systems can breakdown lignocellulose in model wastes to potentially enhance biogas generation. Two representative lignocellulosic wastes (newspaper and softwood) commonly found largely undegraded in old landfills were used. A fungal peroxidase (lignin peroxidase) enzyme and a recently isolated lignin-degrading bacterial strain (Agrobacterium sp.) were used. Tests were conducted in stirred bioreactors with methanogens from sewage sludge added to produce biogas from breakdown products. Addition of lignin peroxidase resulted in ~20% enhancement in cumulative methane produced in newspaper reactors. It had a negative effect on wood. Agrobacterium sp. strain enhanced biodegradation of both wood (~20% higher release of soluble organic carbon and enhanced breakdown) and newspaper (~2-fold biogas yield). The findings of this paper have important implications for enhanced breakdown in old landfills that are rich in these wastes, and anaerobic operations utilising lignocellulosic wastes for higher degradation efficiencies and biogas production.
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18
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Impacts of Cellulase and Amylase on Enzymatic Hydrolysis and Methane Production in the Anaerobic Digestion of Corn Straw. SUSTAINABILITY 2020. [DOI: 10.3390/su12135453] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The impacts of enzyme pre-treatments on anaerobic digestion of lignocellulosic biomass were explored by using corn straw as a substrate for enzyme pre-treatment and anaerobic digestion and by utilizing starch and microcrystalline cellulose as substrates for comparative analysis. The cellulase pre-treatment effectively improved the enzymatic hydrolysis of cellulose, decreased the crystallinity, and consequently showed 33.2% increase in methane yield. The methane yield of starch increased by 16.0% through amylase pre-treatment. However, when the substrate was corn straw, both the efficiencies of enzymes and methane production were markedly reduced by the lignocellulosic structure. The corn straw’s methane yields were 277.6 and 242.4 mL·CH4/g·VS with cellulase and amylase pre-treatment, respectively, which was 11.7% and 27.9% higher than that of the untreated corn straw. It may imply that the lignocellulose should be broken up firstly, enzyme pre-treatments could have great potentials when combined with other methods.
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19
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Trace Element Supplementation and Enzyme Addition to Enhance Biogas Production by Anaerobic Digestion of Chicken Litter. ENERGIES 2020. [DOI: 10.3390/en13133477] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Anaerobic digestion (AD) of chicken litter (CL) is a viable alternative to disposal. However, methane yields from this primarily organic waste are quite low when mono-digested. This paper discusses the effect of an enzyme cocktail, trace element (TE) supplementation and selenium (Se) addition in small-scale batch biomethane potential (BMP) assays to enhance the AD of CL. Eleven different assays were set up in triplicate including assays containing only inoculum (blank), only CL (negative control) and cellulose and inoculum (positive control). The results indicate that both enzyme treatment and trace element supplementation enhanced the biogas and methane yield. The highest specific biogas and methane yields were noted for 1% enzyme-treated CL of 835.2 L/kg volatile solids (VS) and 460.8 L/kg VS, respectively. Usually, mono-digestion of CL is low due to high nitrogen content and the presence of recalcitrant lignocellulosic material from the bedding material. Enzyme treatment performed better than the addition of the TE mix and Se.
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20
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Pečar D, Pohleven F, Goršek A. Kinetics of methane production during anaerobic fermentation of chicken manure with sawdust and fungi pre-treated wheat straw. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 102:170-178. [PMID: 31678803 DOI: 10.1016/j.wasman.2019.10.046] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 09/05/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
The goal of this study was to determine the kinetic parameters of methane production during anaerobic fermentation of mixtures of chicken manure with sawdust and wheat straw overgrown with fungi. Pre-treatment of wheat straw was carried out with Pleurotus ostreatus and Trametes versicolor white-rot fungi. Mixtures of chicken manure with sawdust and wheat straw overgrown with fungi at different mass ratios (50:50, 60:40 and 80:20) were used as a substrate for anaerobic fermentation. For the control, ordinary wheat straw was used. Anaerobic fermentations were performed at (35, 40 and 45) °C. An individual process of anaerobic fermentation was maintained at constant temperature for 21 days. During the process, the volume and concentration of biogas produced were monitored. The most biogas produced was recorded for the straw overgrown with Pleurotus ostreatus fungi (ratio 50:50) at 45 °C, and the least in the case of straw overgrown with Trametes versicolor fungi (ratio 80:20) at 35 °C. At the beginning of anaerobic fermentation, the methane concentration increased faster at a higher temperature, while after 21 days, it was between 53 and 56% regardless of temperature.
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Affiliation(s)
- Darja Pečar
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, 2000 Maribor, Slovenia.
| | - Franc Pohleven
- University of Ljubljana, Biotechnical Faculty, Department of Wood Science and Technology, Rožna dolina Cesta VIII/34, 1000 Ljubljana, Slovenia
| | - Andreja Goršek
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, 2000 Maribor, Slovenia
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21
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Mixtures of aromatic compounds induce ligninolytic gene expression in the wood-rotting fungus Dichomitus squalens. J Biotechnol 2020; 308:35-39. [PMID: 31778732 DOI: 10.1016/j.jbiotec.2019.11.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/18/2019] [Accepted: 11/23/2019] [Indexed: 11/23/2022]
Abstract
Heterologous production of fungal ligninolytic cocktails is challenging due to the low yields of catalytically active lignin modifying peroxidases. Production using a natural system, such as a wood-rotting fungus, is a promising alternative if specific or preferential induction of the ligninolytic activities could be achieved. Using transcriptomics, gene expression of the white-rot Dichomitus squalens during growth on mixtures of aromatic compounds, with ring structures representing the two major lignin sub-units, was compared to a wood substrate. Most of the genes encoding lignin modifying enzymes (laccases and peroxidases) categorised as highly or moderately expressed on wood were expressed similarly on aromatic compounds. Higher expression levels of a subset of manganese and versatile peroxidases was observed on di- compared to mono-methoxylated aromatics. The expression of polysaccharide degrading enzymes was lower on aromatic compounds compared to wood, demonstrating that the induction of lignin modifying enzymes became more specific. This study suggests potential for aromatic waste streams, e.g. from lignocellulose pretreatment, to produce a lignin-specific enzyme cocktail from D. squalens or other white-rot fungi.
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Xu N, Liu S, Xin F, Zhou J, Jia H, Xu J, Jiang M, Dong W. Biomethane Production From Lignocellulose: Biomass Recalcitrance and Its Impacts on Anaerobic Digestion. Front Bioeng Biotechnol 2019; 7:191. [PMID: 31440504 PMCID: PMC6694284 DOI: 10.3389/fbioe.2019.00191] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/24/2019] [Indexed: 11/29/2022] Open
Abstract
Anaerobic digestion using lignocellulosic material as the substrate is a cost-effective strategy for biomethane production, which provides great potential to convert biomass into renewable energy. However, the recalcitrance of native lignocellulosic biomass makes it resistant to microbial hydrolysis, which reduces the bioconversion efficiency of organic matter into biogas. Therefore, it is necessary to critically investigate the correlation between lignocellulose characteristics and bioconversion efficiency. Accordingly, this review comprehensively summarizes the anaerobic digestion process and rate-limiting step, structural and compositional properties of lignocellulosic biomass, recalcitrance and inhibitors of lignocellulose and their major effects on anaerobic digestion for biomethane production. Moreover, various type of pretreatment strategies applied to lignocellulosic biomass was discussed in detail, which would contribution to cell wall degradation and improvement of biomethane yields. In the view of current knowledge, high energy input and cost requirements are the main limitations of these pretreatment methods. In addition to optimization of fermentation process, further studies should focus much more on key structural influence factors of biomass recalcitrance and anaerobic digestion efficiency, which will contribute to improvement of biomethane production from lignocellulose.
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Affiliation(s)
- Ning Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,Jiangsu Key Laboratory for Biomass-Based Energy and Enzyme Technology, Huaiyin Normal University, Huai'an, China
| | - Shixun Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Jie Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Honghua Jia
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Jiming Xu
- Jiangsu Key Laboratory for Biomass-Based Energy and Enzyme Technology, Huaiyin Normal University, Huai'an, China
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, China
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A Review of the Role of Critical Parameters in the Design and Operation of Biogas Production Plants. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9091915] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Many operating parameters, individually or together, may influence the performance of anaerobic digestion towards biogas or digestate yield and quality maximization. The most preferred method of optimizing an anaerobic digestion plant often relies on how carefully the crucial parameters, such as pH, temperature, organic loading rate, hydraulic retention time, and pressure, are chosen. There is a large amount of literature available on optimization of anaerobic digestion; however, given the continued development and implementation of innovative technologies, together with the introduction of increasingly complex systems, it is necessary to update present knowledge on process parameters and their role on operational ranges and flexibilities in real-life anaerobic digestion system. Accordingly, the present review discusses the importance of the selection of operational parameters in existing technologies and their impact on biogas yield. Notably, the four broad areas of feedstock utilization (substrate, inoculum, codigestion and pretreatment), process condition (pH, temperature, pressure, and reactor design), reactor control (HRT and OLR) and inhibition (Ammonia and VFAs) are covered in this review. In addition, particular emphasis is placed on the most recent innovations that have been or may be implemented in current or future biogas plants.
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Hosseini Koupaie E, Dahadha S, Bazyar Lakeh AA, Azizi A, Elbeshbishy E. Enzymatic pretreatment of lignocellulosic biomass for enhanced biomethane production-A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:774-784. [PMID: 30314871 DOI: 10.1016/j.jenvman.2018.09.106] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 09/07/2018] [Accepted: 09/30/2018] [Indexed: 05/25/2023]
Abstract
The rapid depletion of natural resources and the environmental concerns associated with the use of fossil fuels as the main source of global energy is leading to an increased interest in alternative and renewable energy sources. Particular interest has been given to the lignocellulosic biomass as the most abundant source of organic matter with a potential of being utilized for energy recovery. Different approaches have been applied to convert the lignocellulosic biomass to energy products including anaerobic digestion (AD), fermentation, combustion, pyrolysis, and gasification. The AD process has been proven as an effective technology for converting organic material into energy in the form of methane-rich biogas. However, the complex structure of the lignocellulosic biomass comprised of cellulose, hemicelluloses, and lignin hinders the ability of microorganisms in an AD process to degrade and convert these compounds to biogas. Therefore, a pretreatment step is essential to improve the degradability of the lignocellulosic biomass to achieve higher biogas rate and yield. A system that uses pretreatment and AD is known as advanced AD. Several pretreatment methods have been studied over the past few years including physical, thermal, chemical and biological pretreatment. This paper reviews the enzymatic pretreatment as one of the biological pretreatment methods which has received less attention in the literature than the other pretreatment methods. This paper includes a review of lignocellulosic biomass composition, AD process, challenges in degrading lignocellulosic materials, the current status of research to improve the biogas rate and yield from the AD of lignocellulosic biomass via enzymatic pretreatment, and the future trend in research for the reduction of enzymatic pretreatment cost.
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Affiliation(s)
- E 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
| | - S Dahadha
- 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
| | - A A Bazyar Lakeh
- 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
| | - A Azizi
- 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 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.
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Modelling and simulation of anaerobic digestion of various lignocellulosic substrates in batch reactors: Influence of lignin content and phenolic compounds II. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Biogas production from different lignocellulosic biomass sources: advances and perspectives. 3 Biotech 2018; 8:233. [PMID: 29725572 DOI: 10.1007/s13205-018-1257-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/23/2018] [Indexed: 10/17/2022] Open
Abstract
The present work summarizes different sources of biomass used as raw material for the production of biogas, focusing mainly on the use of plants that do not compete with the food supply. Biogas obtained from edible plants entails a developed technology and good yield of methane production; however, its use may not be sustainable. Biomass from agricultural waste is a cheap option, but in general, with lower methane yields than those obtained from edible plants. On the other hand, the use of algae or aquatic plants promises to be an efficient and sustainable option with high yields of methane produced, but it necessary to overcome the existing technological barriers. Moreover, these last raw materials have the additional advantage that they can be obtained from wastewater treatment and, therefore, they could be applied to the concept of biorefinery. An estimation of methane yield per hectare per year of the some types of biomass and operational conditions employed is presented as well. In addition, different strategies to improve the yield of biogas, such as physical, chemical, and biological pretreatments, are presented. Other alternatives for enhanced the biogas production such as bioaugmentation and biohythane are showed and finally perspectives are mentioned.
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Kupski L, Telles AC, Gonçalves LM, Nora NS, Furlong EB. Recovery of functional compounds from lignocellulosic material: An innovative enzymatic approach. FOOD BIOSCI 2018. [DOI: 10.1016/j.fbio.2018.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wyman V, Henríquez J, Palma C, Carvajal A. Lignocellulosic waste valorisation strategy through enzyme and biogas production. BIORESOURCE TECHNOLOGY 2018; 247:402-411. [PMID: 28961446 DOI: 10.1016/j.biortech.2017.09.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 09/05/2017] [Accepted: 09/06/2017] [Indexed: 05/25/2023]
Abstract
Lignocellulosic wastes are generally pre-treated to facilitate the hydrolysis stage during the anaerobic digestion process. A process consisting of solid state fermentation carried out by white rot fungi and anaerobic digestion was evaluated on corn stover to produce ligninolytic enzymes and biogas. The enzyme production was quantified every 3d for a month at 30°C, and three fungal strains and two particle sizes of waste were compared. Of the main outcomes, Pleurotus eryngii produced the highest laccase enzyme activity compared with Pleurotus ostreatus and Trametes versicolor. Furthermore, this activity was improved by 16% when copper was used as an enzyme inducer. On the other hand, most of the conditions studied showed a decrease in maximum biogas production compared with untreated waste, the addition of copper decreased biogas production by 20%. Despite the above, Pleurotus eryngii showed promising results allowing a 19% increase of biogas production and high enzyme production values.
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Affiliation(s)
- Valentina Wyman
- Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Av. Vicuña Mackenna 3939, Santiago, Chile
| | - Josefa Henríquez
- Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Av. Vicuña Mackenna 3939, Santiago, Chile
| | - Carolyn Palma
- Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Av. Vicuña Mackenna 3939, Santiago, Chile
| | - Andrea Carvajal
- Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Av. Vicuña Mackenna 3939, Santiago, Chile.
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29
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Schroyen M, Van Hulle SWH, Holemans S, Vervaeren H, Raes K. Laccase enzyme detoxifies hydrolysates and improves biogas production from hemp straw and miscanthus. BIORESOURCE TECHNOLOGY 2017; 244:597-604. [PMID: 28803111 DOI: 10.1016/j.biortech.2017.07.137] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/21/2017] [Accepted: 07/22/2017] [Indexed: 06/07/2023]
Abstract
The impact of various phenolic compounds, vanillic acid, ferulic acid, p-coumaric acid and 4-hydroxybenzoic acid on anaerobic digestion of lignocellulosic biomass (hemp straw and miscanthus) was studied. Such phenolic compounds have been known to inhibit biogas production during anaerobic digestion. The different phenolic compounds were added in various concentrations: 0, 100, 500, 1000 and 2000mg/L. A difference in inhibition of biomethane production between the phenolic compounds was noted. Hydrolysis rate, during anaerobic digestion of miscanthus was inhibited up to 50% by vanillic acid, while vanillic acid had no influence on the initial rate of biogas production during the anaerobic digestion of hemp straw. Miscanthus has a higher lignin concentration (12-30g/100gDM) making it less accessible for degradation, and in combination with phenolic compounds released after harsh pretreatments, it can cause severe inhibition levels during the anaerobic digestion, lowering biogas production. To counter the inhibition, lignin degrading enzymes can be used to remove or degrade the inhibitory phenolic compounds. The interaction of laccase and versatile peroxidase individually with the different phenolic compounds was studied to have insight in the polymerization of inhibitory compounds or breakdown of lignocellulose. Hemp straw and miscanthus were incubated with 0, 100 and 500mg/L of the different phenolic compounds for 0, 6 and 24h and pretreated with the lignin degrading enzymes. A laccase pretreatment successfully detoxified the substrate, while versatile peroxidase however was inhibited by 100mg/L of each of the individual phenolic compounds. Finally a combination of enzymatic detoxification and subsequent biogas production showed that a decrease in phenolic compounds by laccase treatment can considerably lower the inhibition levels of the biogas production.
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Affiliation(s)
- Michel Schroyen
- Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium
| | - Stijn W H Van Hulle
- Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium
| | - Sander Holemans
- Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium
| | - Han Vervaeren
- Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653, 9000 Gent, Belgium
| | - Katleen Raes
- Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, 8500 Kortrijk, Belgium.
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Xie C, Gong W, Yang Q, Zhu Z, Yan L, Hu Z, Peng Y. White-rot fungi pretreatment combined with alkaline/oxidative pretreatment to improve enzymatic saccharification of industrial hemp. BIORESOURCE TECHNOLOGY 2017; 243:188-195. [PMID: 28662388 DOI: 10.1016/j.biortech.2017.06.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/12/2017] [Accepted: 06/13/2017] [Indexed: 06/07/2023]
Abstract
White-rot fungi combined with alkaline/oxidative (A/O) pretreatments of industrial hemp woody core were proposed to improve enzymatic saccharification. In this study, hemp woody core were treated with only white rot fungi, only A/O and combined with the two methods. The results showed that Pleurotus eryngii (P. eryngii) was the most effective fungus for pretreatment. Reducing sugars yield was 329mg/g with 30 Filter Paper Unit (FPU)/g cellulase loading when treated 21day. In the A/O groups, the results showed that when treated with 3% NaOH and 3% H2O2, the yield of reducing sugars was 288mg/g with 30FPU/g cellulase loading. After combination pretreatment with P. eryngii and A/O pretreatment, the reducing sugar yield from enzymatic hydrolysis of combined sample increased 1.10-1.29-fold than that of bio-treated or A/O pretreatment sample at the same conditions, suggesting that P. eryngii combined with A/O pretreatment was an effective method to improve enzyme hydrolysis.
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Affiliation(s)
- Chunliang Xie
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Wenbing Gong
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Qi Yang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Zuohua Zhu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Li Yan
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Zhenxiu Hu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Yuande Peng
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China.
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31
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Min K, Yum T, Kim J, Woo HM, Kim Y, Sang BI, Yoo YJ, Kim YH, Um Y. Perspectives for biocatalytic lignin utilization: cleaving 4- O-5 and C α-C β bonds in dimeric lignin model compounds catalyzed by a promiscuous activity of tyrosinase. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:212. [PMID: 28912833 PMCID: PMC5594458 DOI: 10.1186/s13068-017-0900-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND In the biorefinery utilizing lignocellulosic biomasses, lignin decomposition to value-added phenolic derivatives is a key issue, and recently biocatalytic delignification is emerging owing to its superior selectivity, low energy consumption, and unparalleled sustainability. However, besides heme-containing peroxidases and laccases, information about lignolytic biocatalysts is still limited till date. RESULTS Herein, we report a promiscuous activity of tyrosinase which is closely associated with delignification requiring high redox potentials (>1.4 V vs. normal hydrogen electrode [NHE]). The promiscuous activity of tyrosinase not only oxidizes veratryl alcohol, a commonly used nonphenolic substrate for assaying ligninolytic activity, to veratraldehyde but also cleaves the 4-O-5 and Cα-Cβ bonds in 4-phenoxyphenol and guaiacyl glycerol-β-guaiacyl ether (GGE) that are dimeric lignin model compounds. Cyclic voltammograms additionally verified that the promiscuous activity oxidizes lignin-related high redox potential substrates. CONCLUSION These results might be applicable for extending the versatility of tyrosinase toward biocatalytic delignification as well as suggesting a new perspective for sustainable lignin utilization. Furthermore, the results provide insight for exploring the previously unknown promiscuous activities of biocatalysts much more diverse than ever thought before, thereby innovatively expanding the applicable area of biocatalysis.
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Affiliation(s)
- Kyoungseon Min
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919 Republic of Korea
- Present Address: Gwangju Bioenergy Research Center, Korea Institute of Energy Research (KIER), Daejeon, 34129 Republic of Korea
| | - Taewoo Yum
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea
| | - Jiye Kim
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea
| | - Han Min Woo
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea
- Present Address: Department of Food Sciencen and Biotechnology, Sungkyunkwan University, Suwon, 16419 Republic of Korea
| | - Yunje Kim
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea
| | - Byoung-In Sang
- Department of Chemical Engineering, Hanyang University, Seoul, 04763 Republic of Korea
| | - Young Je Yoo
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826 Republic of Korea
| | - Yong Hwan Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919 Republic of Korea
| | - Youngsoon Um
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792 Republic of Korea
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32
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Zhou X, Li Q, Zhang Y, Gu Y. Effect of hydrothermal pretreatment on Miscanthus anaerobic digestion. BIORESOURCE TECHNOLOGY 2017; 224:721-726. [PMID: 27866803 DOI: 10.1016/j.biortech.2016.10.085] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 05/25/2023]
Abstract
Miscanthus is a promising source of bioenergy with high lignocellulose content. This paper studied the effect of hydrothermal pretreatment on Miscanthus biogas production. Different pretreatment temperature from 125 to 200°C was tested. After pretreatment, hemicellulose was partially removed and this led to a change in cellulose accessibility. Enzymatic hydrolysis was used to examine the digestibility of different samples. There was no obvious enhancement in low temperature (125 and 150°C) conditions. According to the results, 200°C hydrothermal pretreatment was the optimal condition saving 50% on the digestion time and increasing glucose production 13.2 times compared with the raw material. Although the cellulose crystallinity increased after the pretreatment, its effect on biogas production and enzymatic hydrolysis was limited.
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Affiliation(s)
- Xuefei Zhou
- Key Laboratory of Yangtze River Water Environment for Ministry of Education, School of Environmental Science and Technology, Tongji University, Shanghai 200092, China.
| | - Qi Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Technology, Tongji University, Shanghai 200092, China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Technology, Tongji University, Shanghai 200092, China
| | - Yu Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Technology, Tongji University, Shanghai 200092, China
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33
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Speda J, Johansson MA, Odnell A, Karlsson M. Enhanced biomethane production rate and yield from lignocellulosic ensiled forage ley by in situ anaerobic digestion treatment with endogenous cellulolytic enzymes. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:129. [PMID: 28523077 PMCID: PMC5434626 DOI: 10.1186/s13068-017-0814-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/08/2017] [Indexed: 05/15/2023]
Abstract
BACKGROUND Enzymatic treatment of lignocellulosic material for increased biogas production has so far focused on pretreatment methods. However, often combinations of enzymes and different physicochemical treatments are necessary to achieve a desired effect. This need for additional energy and chemicals compromises the rationale of using enzymes for low energy treatment to promote biogas production. Therefore, simpler and less energy intensive in situ anaerobic digester treatment with enzymes is desirable. However, investigations in which exogenous enzymes are added to treat the material in situ have shown mixed success, possibly because the enzymes used originated from organisms not evolutionarily adapted to the environment of anaerobic digesters. In this study, to examine the effect of enzymes endogenous to methanogenic microbial communities, cellulolytic enzymes were instead overproduced and collected from a dedicated methanogenic microbial community. By this approach, a solution with very high endogenous microbial cellulolytic activity was produced and tested for the effect on biogas production from lignocellulose by in situ anaerobic digester treatment. RESULTS Addition of enzymes, endogenous to the environment of a mixed methanogenic microbial community, to the anaerobic digestion of ensiled forage ley resulted in significantly increased rate and yield of biomethane production. The enzyme solution had an instant effect on more readily available cellulosic material. More importantly, the induced enzyme solution also affected the biogas production rate from less accessible cellulosic material in a second slower phase of lignocellulose digestion. Notably, this effect was maintained throughout the experiment to completely digested lignocellulosic substrate. CONCLUSIONS The induced enzyme solution collected from a microbial methanogenic community contained enzymes that were apparently active and stable in the environment of anaerobic digestion. The enzymatic activity had a profound effect on the biogas production rate and yield, comparable with the results of many pretreatment methods. Thus, application of such enzymes could enable efficient low energy in situ anaerobic digester treatment for increased biomethane production from lignocellulosic material.
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Affiliation(s)
- Jutta Speda
- Molecular Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
| | - Mikaela A. Johansson
- Molecular Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
| | - Anna Odnell
- Molecular Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
- Karshult Municipal Waste Water Treatment Plant, 591 86 Motala, Sweden
| | - Martin Karlsson
- Molecular Biotechnology, Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
- InZymes Biotech AB, Gjuterigatan 1B, 582 73 Linköping, Sweden
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34
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Pérez-Rodríguez N, García-Bernet D, Domínguez JM. Effects of enzymatic hydrolysis and ultrasounds pretreatments on corn cob and vine trimming shoots for biogas production. BIORESOURCE TECHNOLOGY 2016; 221:130-138. [PMID: 27639671 DOI: 10.1016/j.biortech.2016.09.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/02/2016] [Accepted: 09/04/2016] [Indexed: 06/06/2023]
Abstract
Due to their lignocellulosic nature, corn cob and vine trimming shoots (VTS) could be valorized by anaerobic digestion for biogas production. To enhance the digestibility of substrates, pretreatments of lignocellulosic materials are recommended. The effect of enzymatic hydrolysis, ultrasounds pretreatments (US) and the combination of both was assayed in lignocellulosic composition, methane, and biogas yields. The pretreatments leaded to a reduction in lignin and an increase in neutral detergent soluble compounds making corn cob and VTS more amendable for biogas conversion. The US were negative for biogas production from both substrates and in particular strongly detrimental for VTS. On the opposite side, the enzymatic hydrolysis was certainly beneficial increasing 59.8% and 14.6% the methane production from VTS and corn cob, respectively. The prior application of US did not potentiate (or not sufficiently) the improvement in the methane production reflected by the enzymatic hydrolysis pretreatment of VTS and corn cob.
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Affiliation(s)
- N Pérez-Rodríguez
- Department of Chemical Engineering, Faculty of Sciences, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain; Laboratory of Agro-food Biotechnology, CITI (University of Vigo)-Tecnópole, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain.
| | - D García-Bernet
- Halle de Biotechnologie de l'Environnement, Laboratoire de Biotechnologie de l'Environnement (LBE), INRA, Parc Méditerranéen de l'Innovation, 11 100 Narbonne, France.
| | - J M Domínguez
- Department of Chemical Engineering, Faculty of Sciences, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain; Laboratory of Agro-food Biotechnology, CITI (University of Vigo)-Tecnópole, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain.
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35
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Wang X, Li Z, Zhou X, Wang Q, Wu Y, Saino M, Bai X. Study on the bio-methane yield and microbial community structure in enzyme enhanced anaerobic co-digestion of cow manure and corn straw. BIORESOURCE TECHNOLOGY 2016; 219:150-157. [PMID: 27484671 DOI: 10.1016/j.biortech.2016.07.116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
The use of enzymes to improve anaerobic co-digestion (AcoD) of cow manure and corn straw was explored in this study, including cellulase pretreatment and direct additions of amylase and protease. The effects of enzymes on microbial community structure were investigated though PCR-DGGE method. Results showed that AcoD with amylase achieved the highest methane yield of 377.63ml·CH4/g·VS, which was an increase of 110.79%. The methane increment consumed the amylase of 4.18×10(-5)g/ml·CH4. Enzymes mainly affected the bacteria in the hydrolysis stage rather than the bacteria in the hydrogenesis and acetogenesis stage and the archaea in the methanogenesis stage. However, the experimental results demonstrated that enzymes had no negative influence on microbial communities; the predominant microbial communities were similar. Therefore, AcoD with amylase was an effective way to improve the bio-methane yield of cow manure and corn straw.
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Affiliation(s)
- Xuemei Wang
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Zifu Li
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China.
| | - Xiaoqin Zhou
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Qiqi Wang
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China
| | | | - Mayiani Saino
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Xue Bai
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China
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36
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Wei S. The application of biotechnology on the enhancing of biogas production from lignocellulosic waste. Appl Microbiol Biotechnol 2016; 100:9821-9836. [PMID: 27761635 DOI: 10.1007/s00253-016-7926-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 10/02/2016] [Accepted: 10/05/2016] [Indexed: 12/11/2022]
Abstract
Anaerobic digestion of lignocellulosic waste is considered to be an efficient way to answer present-day energy crisis and environmental challenges. However, the recalcitrance of lignocellulosic material forms a major obstacle for obtaining maximum biogas production. The use of biological pretreatment and bioaugmentation for enhancing the performance of anaerobic digestion is quite recent and still needs to be investigated. This paper reviews the status and perspectives of recent studies on biotechnology concept and investigates its possible use for enhancing biogas production from lignocellulosic waste with main emphases on biological pretreatment and bioaugmentation techniques.
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Affiliation(s)
- Suzhen Wei
- Department of Resource and Environment, Tibet Agricultural and Animal Husbandry College, Linzhi, Tibet, 860000, China.
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37
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Marforio TD, Bottoni A, Calvaresi M, Fabbri D, Giacinto P, Zerbetto F. The Reaction Pathway of Cellulose Pyrolysis to a Multifunctional Chiral Building Block: The Role of Water Unveiled by a DFT Computational Investigation. Chemphyschem 2016; 17:3948-3953. [DOI: 10.1002/cphc.201600869] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Indexed: 01/25/2023]
Affiliation(s)
- Tainah Dorina Marforio
- Dipartimento di Chimica “Giacomo Ciamician”; Alma Mater Studiorum-Università di Bologna; via Francesco Selmi 2 40126 Bologna Italy
| | - Andrea Bottoni
- Dipartimento di Chimica “Giacomo Ciamician”; Alma Mater Studiorum-Università di Bologna; via Francesco Selmi 2 40126 Bologna Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica “Giacomo Ciamician”; Alma Mater Studiorum-Università di Bologna; via Francesco Selmi 2 40126 Bologna Italy
| | - Daniele Fabbri
- Dipartimento di Chimica “Giacomo Ciamician”; Alma Mater Studiorum-Università di Bologna; via Francesco Selmi 2 40126 Bologna Italy
| | - Pietro Giacinto
- Dipartimento di Chimica “Giacomo Ciamician”; Alma Mater Studiorum-Università di Bologna; via Francesco Selmi 2 40126 Bologna Italy
| | - Francesco Zerbetto
- Dipartimento di Chimica “Giacomo Ciamician”; Alma Mater Studiorum-Università di Bologna; via Francesco Selmi 2 40126 Bologna Italy
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38
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Linking pyrolysis and anaerobic digestion (Py-AD) for the conversion of lignocellulosic biomass. Curr Opin Biotechnol 2016; 38:167-73. [DOI: 10.1016/j.copbio.2016.02.004] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/07/2016] [Accepted: 02/09/2016] [Indexed: 11/20/2022]
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39
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Lignin Biodegradation with Fungi, Bacteria and Enzymes for Producing Chemicals and Increasing Process Efficiency. PRODUCTION OF BIOFUELS AND CHEMICALS FROM LIGNIN 2016. [DOI: 10.1007/978-981-10-1965-4_6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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40
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Jung DH, Kim EJ, Jung E, Kazlauskas RJ, Choi KY, Kim BG. Production ofp-hydroxybenzoic acid fromp-coumaric acid byBurkholderia glumaeBGR1. Biotechnol Bioeng 2015; 113:1493-503. [DOI: 10.1002/bit.25908] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/10/2015] [Accepted: 12/14/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Da-Hye Jung
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-7442 South Korea
| | - Eun-Jung Kim
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-7442 South Korea
| | - Eunok Jung
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-7442 South Korea
| | - Romas J Kazlauskas
- Department of Biochemistry; Molecular Biology & Biophysics and The Biotechnology Institute; University of Minnesota; Saint Paul Minnesota 55108
| | - Kwon-Young Choi
- Department of Environmental Engineering; College of Engineering; Ajou University; Suwon 443-749 Kyeonggi-do South Korea
| | - Byung-Gee Kim
- School of Chemical and Biological Engineering; Seoul National University; Seoul 151-7442 South Korea
- Institute of Bioengineering; Seoul National University; Seoul 151-742 South Korea
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