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Fonoll X, Zhu K, Aley L, Shrestha S, Raskin L. Simulating Rumen Conditions Using an Anaerobic Dynamic Membrane Bioreactor to Enhance Hydrolysis of Lignocellulosic Biomass. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:1741-1751. [PMID: 38184844 DOI: 10.1021/acs.est.3c06478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
An anaerobic dynamic membrane bioreactor (AnDMBR) mimicking rumen conditions was developed to enhance the hydrolysis of lignocellulosic materials and the production of volatile fatty acids (VFAs) when treating food waste. The AnDMBR was inoculated with cow rumen content and operated at a 0.5 day hydraulic retention time, 2-4 day solids retention time, a temperature of 39 °C, and a pH of 6.3, characteristics similar to those of a rumen. Removal rates of neutral detergent fiber and acid detergent fiber of 58.9 ± 8.4 and 69.0 ± 8.6%, respectively, and a VFA yield of 0.55 ± 0.12 g VFA as chemical oxygen demand g volatile solids (VS)fed-1 were observed at an organic loading rate of 18 ± 2 kg VS m-3 day-1. The composition and activity of the microbial community remained consistent after biofilm disruption, bioreactor upset, and reinoculation. Up to 66.7 ± 5.7% of the active microbial populations and 51.0 ± 7.0% of the total microbial populations present in the rumen-mimicking AnDMBR originated from the inoculum. This study offers a strategy to leverage the features of a rumen; the AnDMBR achieved high hydrolysis and fermentation rates even when treating substrates different from those fed to ruminants.
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Affiliation(s)
- Xavier Fonoll
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Energy Research & Innovation, Great Lakes Water Authority, 9300 W Jefferson Avenue, Detroit, Michigan 48209, United States
| | - Kuang Zhu
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Lucy Aley
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Shilva Shrestha
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, Maryland 21205, United States
| | - Lutgarde Raskin
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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2
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Anacleto TM, Kozlowsky-Suzuki B, Björn A, Yekta SS, Masuda LSM, de Oliveira VP, Enrich-Prast A. Methane yield response to pretreatment is dependent on substrate chemical composition: a meta-analysis on anaerobic digestion systems. Sci Rep 2024; 14:1240. [PMID: 38216634 PMCID: PMC10786828 DOI: 10.1038/s41598-024-51603-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 01/07/2024] [Indexed: 01/14/2024] Open
Abstract
Proper pretreatment of organic residues prior to anaerobic digestion (AD) can maximize global biogas production from varying sources without increasing the amount of digestate, contributing to global decarbonization goals. However, the efficiency of pretreatments applied on varying organic streams is poorly assessed. Thus, we performed a meta-analysis on AD studies to evaluate the efficiencies of pretreatments with respect to biogas production measured as methane yield. Based on 1374 observations our analysis shows that pretreatment efficiency is dependent on substrate chemical dominance. Grouping substrates by chemical composition e.g., lignocellulosic-, protein- and lipid-rich dominance helps to highlight the appropriate choice of pretreatment that supports maximum substrate degradation and more efficient conversion to biogas. Methane yield can undergo an impactful increase compared to untreated controls if proper pretreatment of substrates of a given chemical dominance is applied. Non-significant or even adverse effects on AD are, however, observed when the substrate chemical dominance is disregarded.
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Affiliation(s)
- Thuane Mendes Anacleto
- Postgraduate Program in Plant Biotechnology and Bioprocesses, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Multiuser Unit of Environmental Analysis, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Betina Kozlowsky-Suzuki
- Department of Ecology and Marine Resources, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
- Postgraduate Program in Conservation and Ecotourism, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
- Postgraduate Program in Neotropical Biodiversity, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Annika Björn
- Department of Thematic Studies-Environmental Change, Linköping University, Linköping, Sweden
- Biogas Solutions Research Center, Linköping University, Linköping, Sweden
| | - Sepehr Shakeri Yekta
- Department of Thematic Studies-Environmental Change, Linköping University, Linköping, Sweden
- Biogas Solutions Research Center, Linköping University, Linköping, Sweden
| | | | - Vinícius Peruzzi de Oliveira
- Multiuser Unit of Environmental Analysis, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alex Enrich-Prast
- Multiuser Unit of Environmental Analysis, Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
- Department of Thematic Studies-Environmental Change, Linköping University, Linköping, Sweden.
- Biogas Solutions Research Center, Linköping University, Linköping, Sweden.
- Institute of Marine Science, Federal University of São Paulo (IMar/UNIFESP), Santos, Brazil.
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Ramzan H, Usman M, Nadeem F, Shahzaib M, Ur Rahman M, Singhania RR, Jabeen F, Patel AK, Qing C, Liu S, Piechota G, Tahir N. Depolymerization of lignin: Recent progress towards value-added chemicals and biohydrogen production. BIORESOURCE TECHNOLOGY 2023; 386:129492. [PMID: 37463615 DOI: 10.1016/j.biortech.2023.129492] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/08/2023] [Accepted: 07/12/2023] [Indexed: 07/20/2023]
Abstract
The need for alternative sources of energy became increasingly urgent as demand for energy and the use of fossil fuels both soared. When processed into aromatic compounds, lignin can be utilized as an alternative to fossil fuels, however, lignin's complex structure and recalcitrance make depolymerization impractical. This article presented an overview of the most recent advances in lignin conversion, including process technology, catalyst advancement, and case study-based end products. In addition to the three established methods (thermochemical, biochemical, and catalytic depolymerization), a lignin-first strategy was presented. Depolymerizing different forms of lignin into smaller phenolic molecules has been suggested using homogeneous and heterogeneous catalysts for oxidation or reduction. Limitations and future prospects of lignin depolymerization have been discussed which suggests that solar-driven catalytic depolymerization through photocatalysts including quantum dots offers a unique pathway to obtain the highly catalytic conversion of lignin.
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Affiliation(s)
- Hina Ramzan
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | - Muhammad Usman
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | - Faiqa Nadeem
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | - Muhammad Shahzaib
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | - Muneeb Ur Rahman
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | - Reeta Rani Singhania
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Farzana Jabeen
- Department of Computing, SEECS, National University of Sciences and Technology (NUST), Campus, Sector H-12, Islamabad, Pakistan
| | - Anil Kumar Patel
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Chunyao Qing
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | - Shengyong Liu
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China
| | | | - Nadeem Tahir
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, 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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Wongfaed N, O-Thong S, Sittijunda S, Reungsang A. Taxonomic and enzymatic basis of the cellulolytic microbial consortium KKU-MC1 and its application in enhancing biomethane production. Sci Rep 2023; 13:2968. [PMID: 36804594 PMCID: PMC9941523 DOI: 10.1038/s41598-023-29895-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 02/13/2023] [Indexed: 02/22/2023] Open
Abstract
Lignocellulosic biomass is a promising substrate for biogas production. However, its recalcitrant structure limits conversion efficiency. This study aims to design a microbial consortium (MC) capable of producing the cellulolytic enzyme and exploring the taxonomic and genetic aspects of lignocellulose degradation. A diverse range of lignocellulolytic bacteria and degrading enzymes from various habitats were enriched for a known KKU-MC1. The KKU-MC1 was found to be abundant in Bacteroidetes (51%), Proteobacteria (29%), Firmicutes (10%), and other phyla (8% unknown, 0.4% unclassified, 0.6% archaea, and the remaining 1% other bacteria with low predominance). Carbohydrate-active enzyme (CAZyme) annotation revealed that the genera Bacteroides, Ruminiclostridium, Enterococcus, and Parabacteroides encoded a diverse set of cellulose and hemicellulose degradation enzymes. Furthermore, the gene families associated with lignin deconstruction were more abundant in the Pseudomonas genera. Subsequently, the effects of MC on methane production from various biomasses were studied in two ways: bioaugmentation and pre-hydrolysis. Methane yield (MY) of pre-hydrolysis cassava bagasse (CB), Napier grass (NG), and sugarcane bagasse (SB) with KKU-MC1 for 5 days improved by 38-56% compared to non-prehydrolysis substrates, while MY of prehydrolysed filter cake (FC) for 15 days improved by 56% compared to raw FC. The MY of CB, NG, and SB (at 4% initial volatile solid concentration (IVC)) with KKU-MC1 augmentation improved by 29-42% compared to the non-augmentation treatment. FC (1% IVC) had 17% higher MY than the non-augmentation treatment. These findings demonstrated that KKU-MC1 released the cellulolytic enzyme capable of decomposing various lignocellulosic biomasses, resulting in increased biogas production.
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Affiliation(s)
- Nantharat Wongfaed
- grid.9786.00000 0004 0470 0856Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Sompong O-Thong
- grid.440406.20000 0004 0634 2087International College, Thaksin University, Songkhla, 90000 Thailand
| | - Sureewan Sittijunda
- grid.10223.320000 0004 1937 0490Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom, 73170 Thailand
| | - Alissara Reungsang
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Academy of Science, Royal Society of Thailand, Bangkok, 10300, Thailand.
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Sai Bharadwaj AVSL, Dev S, Zhuang J, Wang Y, Yoo CG, Jeon BH, Aggarwal S, Park SH, Kim TH. Review of chemical pretreatment of lignocellulosic biomass using low-liquid and low-chemical catalysts for effective bioconversion. BIORESOURCE TECHNOLOGY 2023; 368:128339. [PMID: 36400274 DOI: 10.1016/j.biortech.2022.128339] [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: 09/29/2022] [Revised: 11/13/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Chemical pretreatment of lignocellulosic biomass (LCB) is essential for effective biological conversion in subsequent steps to produce biofuels or biochemicals. For effective pretreatment, high lignin content and its recalcitrant nature of LCB are major factors influencing bioconversion, especially lignin is known to be effectively solubilized by alkaline, organic, and deep eutectic solvents, ionic liquids, while hemicellulose is effectively dissolved by various acid catalysts and organic solvents. Depending on the pretreatment method/catalyst used, different pretreatment process scheme should be applied with different amounts of catalyst and water inputs to achieve a satisfactory effect. In addition, the amount of processing water required in the following processes such as washing, catalyst recovery, and conditioning after pretreatment is critical factor for scale-up (commercialization). In this review, the amount of catalyst and/or water used, and the effect of pretreatment, properties of the products, and recovery of liquid are also discussed.
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Affiliation(s)
- A V S L Sai Bharadwaj
- Department of Materials Sciences and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - Subhabrata Dev
- Water and Environmental Research Center (WERC), Institute of Northern Engineering (INE), University of Alaska Fairbanks (UAF), Fairbanks, AK 99775, USA
| | - Jingshun Zhuang
- Department of Chemical Engineering, State University of New York, College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Yunxuan Wang
- Department of Chemical Engineering, State University of New York, College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Chang Geun Yoo
- Department of Chemical Engineering, State University of New York, College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Srijan Aggarwal
- Civil, Geological, and Environmental Engineering, University of Alaska Fairbanks, College of Engineering and Mines, Fairbanks, AK 99775-5960, USA
| | - Seung Hyun Park
- Department of Materials Sciences and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - Tae Hyun Kim
- Department of Materials Sciences and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
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7
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Obtainment of lignocellulose degradation microbial community: the effect of acid–base combination after restrictive enrichment. Arch Microbiol 2022; 204:683. [DOI: 10.1007/s00203-022-03195-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 11/06/2022]
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8
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Oliva A, Tan LC, Papirio S, Esposito G, Lens PNL. Fed-batch anaerobic digestion of raw and pretreated hazelnut skin over long-term operation. BIORESOURCE TECHNOLOGY 2022; 357:127372. [PMID: 35623606 DOI: 10.1016/j.biortech.2022.127372] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
This study provided important insights on the anaerobic digestion (AD) of hazelnut skin (HS) by operating a fed-batch AD reactor over 240 days and focusing on several factors impacting the process in the long term. An efficient reactor configuration was proposed to increase the substrate load while reducing the solid retention time during the fed-batch AD of HS. Raw HS produced maximally 19.29 mL CH4/g VSadd/d. Polyphenols accumulated in the reactor and the use of NaOH to adjust the pH likely inhibited AD. Maceration and methanol-organosolv pretreatments were, thus, used to remove polyphenols from HS (i.e. 82 and 97%, respectively) and improve HS biodegradation. Additionally, organosolv pretreatment removed 9% of the lignin. The organosolv-pretreated HS showed an increment in methane potential of 21%, while macerated HS produced less methane than the raw substrate, probably due to the loss of non-structural sugars during maceration.
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Affiliation(s)
- A Oliva
- Department of Microbiology and Ryan Institute, National University of Ireland Galway, University Road, H91 TK33, Galway, Ireland.
| | - L C Tan
- Department of Microbiology and Ryan Institute, National University of Ireland Galway, University Road, H91 TK33, Galway, Ireland
| | - S Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Via Claudio 21, 80125, Naples, Italy
| | - G Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Via Claudio 21, 80125, Naples, Italy
| | - P N L Lens
- Department of Microbiology and Ryan Institute, National University of Ireland Galway, University Road, H91 TK33, Galway, Ireland
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9
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Study on the Sugar-Producing Effect of High-Temperature Anaerobic Straw Biosaccharification Strain. WATER 2022. [DOI: 10.3390/w14142186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The utilization of straw waste cellulose will be beneficial by economic, social, and environmental means. The present study sought to screen the high-efficiency cellulose sugar-producing strain from corn straw. The 16S high-throughput sequencing method and the combination of morphological, physiological, and biochemical characteristics of the strain confirmed the strain to be Clostridium thermocellum, which was named Clostridium thermocellum FC811. Moreover, the single factor experiment was conducted to investigate the effect of environmental factors on saccharification efficiency. The optimal saccharification conditions of cellulose saccharification of FC811 strain selected through response surface analysis were as follows: temperature of 58.9 °C, pH of 7.21, culture time of 6.60 d, substrate concentration of 5.01 g/L, and yeast powder concentration of 2.15 g/L. The soluble sugar yield was 3.11 g/L, and the conversion rate of reducing sugar was 62.2%. This study will provide a reference for resource and energy utilization of straw materials, simultaneous fermentation of sugar and hydrogen production, and their large-scale production and application.
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Yan C, Liu Y, Cui X, Cao L, Xiong J, Zhang Q, Wang Y, Ruan R. Improving the efficiency of anaerobic digestion: Domesticated paddy soil microbes enhance the hydrolytic acidification of rice straw and pig manure. BIORESOURCE TECHNOLOGY 2022; 345:126570. [PMID: 34921923 DOI: 10.1016/j.biortech.2021.126570] [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: 10/27/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Improving the efficiency of hydrolytic acidification is critical for methane production from agricultural waste. This study is the first to apply domesticated paddy soil microbes to (DPSM) enhance the hydrolytic acidification of rice straw (RS) and pig manure (PM) to obtain acidizing fluid for anaerobic digestion (AD). At a substrate concentration of 20%, the inoculation of an RS-PM mixture (1:3) with 35% DPSM degraded the volatile solids by 48.1% and yielded 6.8 g/L of volatile fatty acids and 4.7 g/L of acetic acid after seven days of hydrolytic acidification. After 10 days of subsequent AD, the cumulative methane production of the acidizing fluid was 304.96 mL/g COD, similar (P > 0.05) to the control (318.27 mL/g COD). However, the methane production time decreased by 43.4% (from 30 to 17 days), thereby improving the AD efficiency. Inoculation with DPSM is therefore an effective pre-treatment for agricultural waste for methane production.
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Affiliation(s)
- Chen Yan
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Xian Cui
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China.
| | - Leipeng Cao
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Jianghua Xiong
- Agricultural Ecology and Resources Protection Station of Jiangxi Province, Jiangxi, PR China
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Yunpu Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
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11
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Ali SS, Jiao H, Mustafa AM, Koutra E, El-Sapagh S, Kornaros M, Elsamahy T, Khalil M, Bulgariu L, Sun J. Construction of a novel microbial consortium valued for the effective degradation and detoxification of creosote-treated sawdust along with enhanced methane production. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126091. [PMID: 34118544 DOI: 10.1016/j.jhazmat.2021.126091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/29/2021] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
Lignocellulosic biomass represents an unlimited and ubiquitous energy source, which can effectively address current global challenges, including climate change, greenhouse gas emissions, and increased energy demand. However, lignocellulose recalcitrance hinders microbial degradation, especially in case of contaminated materials such as creosote (CRO)-treated wood, which necessitates appropriate processing in order to eliminate pollution. This study might be the first to explore a novel bacterial consortium SST-4, for decomposing birchwood sawdust, capable of concurrently degrading lignocellulose and CRO compounds. Afterwards, SST-4 which stands for molecularly identified bacterial strains Acinetobacter calcoaceticus BSW-11, Shewanella putrefaciens BSW-18, Bacillus cereus BSW-23, and Novosphingobium taihuense BSW-25 was evaluated in terms of biological sawdust pre-treatment, resulting in effective lignocellulose degradation and 100% removal of phenol and naphthalene. Subsequently, the maximum biogas production observed was 18.7 L/kg VS, while cumulative methane production was 162.8 L/kg VS, compared to 88.5 without microbial pre-treatment. The cumulative energy production from AD-I and AD-II through biomethanation was calculated as 3177.1 and 5843.6 KJ/kg, respectively. The pretreatment process exhibited a significant increase in the energy yield by 83.9%. Lastly, effective CRO detoxification was achieved with EC50 values exceeding 90%, showing the potential for an integrated process of effective contaminated wood management and bioenergy production.
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Affiliation(s)
- Sameh Samir Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Haixin Jiao
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ahmed M Mustafa
- State Key Laboratory of Pollution Control and Resourses Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Department of Agricultural Engineering, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - Eleni Koutra
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, Patras 26504, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, Patras 26504, Greece
| | - Shimaa El-Sapagh
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, Patras 26504, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, Patras 26504, Greece
| | - Tamer Elsamahy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Maha Khalil
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Laura Bulgariu
- Department of Environmental Engineering and Management, Cristofor Simionescu Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
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12
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Xu H, Li Y, Hua D, Zhao Y, Chen L, Zhou L, Chen G. Effect of microaerobic microbial pretreatment on anaerobic digestion of a lignocellulosic substrate under controlled pH conditions. BIORESOURCE TECHNOLOGY 2021; 328:124852. [PMID: 33611022 DOI: 10.1016/j.biortech.2021.124852] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
The effects of various microaeration strategies and process parameters on anaerobic digestion (AD) of lignocellulosic substrates have received increased attention; however, different results have been reported. To determine optimal conditions and clarify the mechanisms influencing this process, the effect of pretreatment of microaerobic microbial on corn stover decomposition and AD was investigated with real-time pH control. Fresh cow manure was chosen as the inoculum, as it has the strongest cellulose hydrolysis capacity under microaeration conditions. Microaeration microbial pretreatment effectively promoted the hydrolysis and acidogenesis of corn stover, and pH considerably affected total solid reduction, volatile fatty acid (VFA), and accumulation of soluble chemical oxygen demand (sCOD) patterns by shifting microbial communities. Different pH levels and pretreatment times led to positive and negative effects on methane yield. A 12-h pretreatment of substrate at pH 8 prior to AD increased the methane yield by 16.6% in comparison with the un-pretreated sample.
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Affiliation(s)
- Haipeng Xu
- School of Environment Science and Engineering, Tianjin University, Tianjin 300072, China; Energy Institute, Qilu University of Technology(Shandong Academy of Sciences), Shandong Key Laboratory of Biomass Gasification Technology, Jinan 250014, China
| | - Yan Li
- Energy Institute, Qilu University of Technology(Shandong Academy of Sciences), Shandong Key Laboratory of Biomass Gasification Technology, Jinan 250014, China
| | - Dongliang Hua
- Energy Institute, Qilu University of Technology(Shandong Academy of Sciences), Shandong Key Laboratory of Biomass Gasification Technology, Jinan 250014, China
| | - Yuxiao Zhao
- Energy Institute, Qilu University of Technology(Shandong Academy of Sciences), Shandong Key Laboratory of Biomass Gasification Technology, Jinan 250014, China
| | - Lei Chen
- Energy Institute, Qilu University of Technology(Shandong Academy of Sciences), Shandong Key Laboratory of Biomass Gasification Technology, Jinan 250014, China
| | - Lei Zhou
- Shandong Pharmaceutical Industry Design Institute, Jinan 250100, China
| | - Guanyi Chen
- School of Environment Science and Engineering, Tianjin University, Tianjin 300072, China.
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13
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Ali SS, Mustafa AM, Kornaros M, Sun J, Khalil M, El-Shetehy M. Biodegradation of creosote-treated wood by two novel constructed microbial consortia for the enhancement of methane production. BIORESOURCE TECHNOLOGY 2021; 323:124544. [PMID: 33360721 DOI: 10.1016/j.biortech.2020.124544] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 05/07/2023]
Abstract
Lignocellulose biodegradation is limited because of its recalcitrant structure particularly when polluted by toxic and carcinogenic compounds such as creosote oil (CRO). As far as we know, this might be the first report that explores the biodegradation of creosote treated wood (CTW) to serve biomethane production. Two novel CTW-degrading microbial consortia, designated as CTW-1 and CTW-2, were screened and constructed to enhance methane production from CRO-treated pine sawdust. After 12 days of biological pretreatment by CTW-1 and CTW-2, a significant reduction in lignocellulosic content of CTW was recorded; estimated as 49 and 43%, respectively. More than 64 and 91% of cumulative biogas and methane yields were obtained from biodegraded CTW over control. Ecotoxicity of treated and untreated CTW was compared by Microtox test. The biodegraded CTW hydrolysates showed a toxicity decrease of more than 80%, suggesting the promising role of constructed microbial consortia for biofuel production and bioremediation.
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Affiliation(s)
- Sameh Samir Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Ahmed M Mustafa
- State Key Laboratory of Pollution Control and Resourses Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 20092, China; Department of Agricultural Engineering, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, 26504 Patras, Greece
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Maha Khalil
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohamed El-Shetehy
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Department of Biology, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
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14
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Ali SS, Kornaros M, Manni A, Sun J, El-Shanshoury AERR, Kenawy ER, Khalil MA. Enhanced anaerobic digestion performance by two artificially constructed microbial consortia capable of woody biomass degradation and chlorophenols detoxification. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:122076. [PMID: 32004834 DOI: 10.1016/j.jhazmat.2020.122076] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 01/10/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Catalpa sawdust (CSW) is a promising biomass-based biofuel. However, the complex lignocellulosic structure limits its efficient utilization in biorefinery applications. It is even more so when chlorophenols (CPs), highly toxic organic substances widely used as wood preservatives, are present. Hence, it is crucial to develop effective and eco-friendly approaches to attain deconstruction of lignocellulose and chlorophenols simultaneously as well as to improve methane (CH4) production efficiently. This study might be the first to explore the performance of the novel constructed microbial consortia CS-5 and BC-4 on woody biomass degradation and CPs detoxification simultaneously with CH4 production. After the degradation of CSW and CPs for 15 days by C5-5 or BC-4, significant reduction in lignocellulosic components and CPs mixture was realized with a total weight loss of 69.2 and 56.3 % and CPs degradation of 89 and 95 %, respectively. The toxicity of individual or mixed CPs after 15 days of degradation was reduced by approximately 90 %. The synergistic action of CS-5 and BC-4 enhanced biogas and CH4 yields over 76 and 64 % respectively, higher than control. Furthermore, CH4 production increased by 113.7 % at the peak phase of AD process. Methanosataceae represented 45.1 % of the methanogenic Archaea in digester G-III.
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Affiliation(s)
- Sameh S Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504, Patras, Greece
| | - Alessandro Manni
- Department of Industrial Engineering, University of Rome Tor Vergata, Italy
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | | | - El-Refaie Kenawy
- Polymer Research Group, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Maha A Khalil
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt; Biology Department, Faculty of Science, Taif University, Saudi Arabia
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15
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Ali SS, Mustafa AM, Kornaros M, Manni A, Sun J, Khalil MA. Construction of novel microbial consortia CS-5 and BC-4 valued for the degradation of catalpa sawdust and chlorophenols simultaneously with enhancing methane production. BIORESOURCE TECHNOLOGY 2020; 301:122720. [PMID: 31945685 DOI: 10.1016/j.biortech.2019.122720] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 12/26/2019] [Accepted: 12/30/2019] [Indexed: 06/10/2023]
Abstract
This study might be the first to explore the novel constructed microbial consortia CS-5 and BC-4 for enhancing methane (CH4) production during anaerobic digestion (AD) with simultaneous degradation of catalpa sawdust and chlorophenols (CPs). Significant reduction in cellulose, hemicellulose and lignin contents was achieved after the biodegradation of catalpa sawdust for 15 days by CS-5 and BC-4, with a total weight loss of 69.2 and 56.3%, respectively. The synergistic microbial consortia enhanced cumulative biogas and CH4 yields by 76.3 and 64.3%, respectively higher than the corresponding control at the end of AD. More than 90% of CH4 was produced within 18 days of AD as a result of microbial pretreatment of catalpa sawdust. These consortia resulted in remarkably higher energy conversion efficiency of 44.3% (218.1 LN CH4/kg TS) over the control. CS-5 and BC-4 removed more than 69 and 77% of the total amount of CPs tested after 15 days.
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Affiliation(s)
- Sameh S Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Ahmed M Mustafa
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Department of Agricultural Engineering, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece
| | - Alessandro Manni
- Department of Industrial Engineering, University of Rome Tor Vergata, Italy
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Maha A Khalil
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Biology Department, Faculty of Science, Taif University, Saudi Arabia
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16
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A Review on Anaerobic Digestion of Lignocellulosic Wastes: Pretreatments and Operational Conditions. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9214655] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Anaerobic digestion (AD) has become extremely popular in the last years to treat and valorize organic wastes both at laboratory and industrial scales, for a wide range of highly produced organic wastes: municipal wastes, wastewater sludge, manure, agrowastes, food industry residuals, etc. Although the principles of AD are well known, it is very important to highlight that knowing the biochemical composition of waste is crucial in order to know its anaerobic biodegradability, which makes an AD process economically feasible. In this paper, we review the main principles of AD, moving to the specific features of lignocellulosic wastes, especially regarding the pretreatments that can enhance the biogas production of such wastes. The main point to consider is that lignocellulosic wastes are present in any organic wastes, and sometimes are the major fraction. Therefore, improving their AD could cause a boost in the development in this technology. The conclusions are that there is no unique strategy to improve the anaerobic biodegradability of lignocellulosic wastes, but pretreatments and codigestion both have an important role on this issue.
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17
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Ma H, Guo Y, Qin Y, Li YY. Nutrient recovery technologies integrated with energy recovery by waste biomass anaerobic digestion. BIORESOURCE TECHNOLOGY 2018; 269:520-531. [PMID: 30181020 DOI: 10.1016/j.biortech.2018.08.114] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 05/27/2023]
Abstract
Anaerobic digestion widely considered as a promising waste biomass disposal treatment approach, is attracting increasing interest in all corners of the globe. However, due to the specific features of different types of waste biomass, the bioenergy conversion efficiency of this process is not ideal. Another problematic aspect of anaerobic digestion is that the nutrient rich effluent sometimes needs to be treated before discharge. This review presents the recent achievements of waste biomass digestion from the perspective of energy recovery and nutrient recovery. In this work, the anaerobic treatment characteristics of common types of waste biomass are summarized and compared. With a focus of nutrient recovery and post treatment issues, the challenges and technical hurdles encountered in the anaerobic digestion of waste biomass are critically reviewed. Finally, an integrated system of anaerobic digestion, anaerobic ammonia oxidation (anammox) and phosphorus recovery is proposed for efficient energy and nutrient recovery from waste biomass.
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Affiliation(s)
- Haiyuan Ma
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Yan Guo
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Yu Qin
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - 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, 980-8579, Japan; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
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18
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Kong X, Du J, Ye X, Xi Y, Jin H, Zhang M, Guo D. Enhanced methane production from wheat straw with the assistance of lignocellulolytic microbial consortium TC-5. BIORESOURCE TECHNOLOGY 2018; 263:33-39. [PMID: 29729539 DOI: 10.1016/j.biortech.2018.04.079] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/16/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
The major obstacle of methane production from lignocellulose lies in the inefficient deconstruction of biomass. In this study, an anaerobic microbial consortium TC-5 was enriched with high lignocellulose-degradation capacity to enhance methane production from wheat straw. High degradation ratio of 45.7% of un-pretreated wheat straw was achieved due to a multi-species lignocellulolytic enzyme presented in the crude culture supernatant. The specific activity of xylanase, xylan esterase and β-xylosidase reached the highest level of 4.23, 0.15 and 0.48 U/mg, while cellobiohydrolase, endoglucanase and β-glucosidase showed the highest specific activity of 0.36, 0.22 and 0.41 U/mg during 9 days' degradation. Inoculation of TC-5 in digestion sludge during anaerobic digestion of wheat straw resulted in remarkable enhancement of 22.2% and 36.6% in methane yield under mesophilic and thermophilic conditions, respectively. This work demonstrates the potential of TC-5 for enhancing the production of biogas and other chemicals through biomass based biorefinery.
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Affiliation(s)
- Xiangping Kong
- East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Biomass Conversion Laboratory, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, People's Republic of China
| | - Jing Du
- East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Biomass Conversion Laboratory, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, People's Republic of China
| | - Xiaomei Ye
- East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Biomass Conversion Laboratory, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, People's Republic of China.
| | - Yonglan Xi
- East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Biomass Conversion Laboratory, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, People's Republic of China
| | - Hongmei Jin
- East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Biomass Conversion Laboratory, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, People's Republic of China
| | - Min Zhang
- East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture, Biomass Conversion Laboratory, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, People's Republic of China
| | - Dong Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing 211816, People's Republic of China
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19
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Paudel SR, Banjara SP, Choi OK, Park KY, Kim YM, Lee JW. Pretreatment of agricultural biomass for anaerobic digestion: Current state and challenges. BIORESOURCE TECHNOLOGY 2017; 245:1194-1205. [PMID: 28899674 DOI: 10.1016/j.biortech.2017.08.182] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/25/2017] [Accepted: 08/29/2017] [Indexed: 05/25/2023]
Abstract
The anaerobic digestion (AD) of agricultural biomass is an attractive second generation biofuel with potential environmental and economic benefits. Most agricultural biomass contains lignocellulose which requires pretreatment prior to AD. For optimization, the pretreatment methods need to be specific to the characteristics of the biomass feedstock. In this review, cereal residue, fruit and vegetable wastes, grasses and animal manure were selected as the agricultural biomass candidates, and the fundamentals and current state of various pretreatment methods used for AD of these feedstocks were investigated. Several nonconventional methods (electrical, ionic liquid-based chemicals, ruminant biological pretreatment) offer potential as targeted pretreatments of lignocellulosic biomass, but each comes with its own challenges. Pursuing an energy-intensive route, a combined bioethanol-biogas production could be a promising a second biofuel refinery option, further emphasizing the importance of pretreatment when lignocellulosic feedstock is used.
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Affiliation(s)
- Shukra Raj Paudel
- Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Pulchowk, Lalitpur, Nepal
| | - Sushant Prasad Banjara
- School of Forestry and Environmental Studies, Yale University, 195 Prospect St, New Haven, CT 06511, USA
| | - Oh Kyung Choi
- Department of Environmental Engineering, College of Science and Technology, Korea University, Sejong 30019, Republic of Korea
| | - Ki Young Park
- Department of Civil and Environmental Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Young Mo Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Jae Woo Lee
- Department of Environmental Engineering, College of Science and Technology, Korea University, Sejong 30019, Republic of Korea.
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20
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Shrestha S, Fonoll X, Khanal SK, Raskin L. Biological strategies for enhanced hydrolysis of lignocellulosic biomass during anaerobic digestion: Current status and future perspectives. BIORESOURCE TECHNOLOGY 2017; 245:1245-1257. [PMID: 28941664 DOI: 10.1016/j.biortech.2017.08.089] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 08/10/2017] [Accepted: 08/14/2017] [Indexed: 05/23/2023]
Abstract
Lignocellulosic biomass is the most abundant renewable bioresource on earth. In lignocellulosic biomass, the cellulose and hemicellulose are bound with lignin and other molecules to form a complex structure not easily accessible to microbial degradation. Anaerobic digestion (AD) of lignocellulosic biomass with a focus on improving hydrolysis, the rate limiting step in AD of lignocellulosic feedstocks, has received considerable attention. This review highlights challenges with AD of lignocellulosic biomass, factors contributing to its recalcitrance, and natural microbial ecosystems, such as the gastrointestinal tracts of herbivorous animals, capable of performing hydrolysis efficiently. Biological strategies that have been evaluated to enhance hydrolysis of lignocellulosic biomass include biological pretreatment, co-digestion, and inoculum selection. Strategies to further improve these approaches along with future research directions are outlined with a focus on linking studies of microbial communities involved in hydrolysis of lignocellulosics to process engineering.
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Affiliation(s)
- Shilva Shrestha
- Department of Civil and Environmental Engineering, University of Michigan, 1351 Beal Avenue, 107 EWRE Building, Ann Arbor, MI 48109-2125, USA; Department of Molecular Biosciences and Bioengineering (MBBE), University of Hawai'i at Mānoa, 1955 East-West Road, Agricultural Science Building 218, Honolulu, HI 96822, USA
| | - Xavier Fonoll
- Department of Civil and Environmental Engineering, University of Michigan, 1351 Beal Avenue, 107 EWRE Building, Ann Arbor, MI 48109-2125, USA
| | - Samir Kumar Khanal
- Department of Molecular Biosciences and Bioengineering (MBBE), University of Hawai'i at Mānoa, 1955 East-West Road, Agricultural Science Building 218, Honolulu, HI 96822, USA
| | - Lutgarde Raskin
- Department of Civil and Environmental Engineering, University of Michigan, 1351 Beal Avenue, 107 EWRE Building, Ann Arbor, MI 48109-2125, USA.
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21
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He CR, Kuo YY, Li SY. Lignocellulosic butanol production from Napier grass using semi-simultaneous saccharification fermentation. BIORESOURCE TECHNOLOGY 2017; 231:101-108. [PMID: 28208065 DOI: 10.1016/j.biortech.2017.01.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/19/2017] [Accepted: 01/20/2017] [Indexed: 05/16/2023]
Abstract
Napier grass is a potential feedstock for biofuel production because of its strong adaptability and wide availability. Compositional analysis has been done on Napier grass which was collected from a local area of Taiwan. By comparing acid- and alkali-pretreatment, it was found that the alkali-pretreatment process is favorable for Napier grass. An overall glucose yield of 0.82g/g-glucosetotal can be obtained with the combination of alkali-pretreatment (2.5wt% NaOH, 8wt% sample loading, 121°C, and a reaction time of 40min) and enzymatic hydrolysis (40FPU/g-substrate). Semi-simultaneous saccharification fermentation (sSSF) was carried out, where enzymatic hydrolysis and ABE fermentation were operated in the same batch. It was found that after 24-h hydrolysis, followed by 96-h fermentation, the butanol and acetone concentrations reached 9.45 and 4.85g/L, respectively. The butanol yield reached 0.22g/g-sugarglucose+xylose. Finally, the efficiency of butanol production from Napier grass was calculated at 31%.
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Affiliation(s)
- Chi-Ruei He
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Yuan Kuo
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
| | - Si-Yu Li
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan.
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22
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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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23
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Yu J, Zhao Y, Liu B, Zhao Y, Wu J, Yuan X, Zhu W, Cui Z. Accelerated acidification by inoculation with a microbial consortia in a complex open environment. BIORESOURCE TECHNOLOGY 2016; 216:294-301. [PMID: 27253477 DOI: 10.1016/j.biortech.2016.05.093] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/20/2016] [Accepted: 05/21/2016] [Indexed: 06/05/2023]
Abstract
Bioaugmentation using microbial consortia is helpful in some anaerobic digestion (AD) systems, but accelerated acidification to produce methane has not been performed effectively with corn stalks and cow dung. In this study, the thermophilic microbial consortia MC1 was inoculated into a complex open environment (unsterilized and sterilized systems) to evaluate the feasibility of bioaugmentation to improve acidification efficiency. The results indicated that MC1 itself degraded lignocellulose efficiently, and accumulated more organic acids within 3days. Similar trends were also observed in the unsterilized system, where the hemicellulose degradation rate and organic acid concentrations increased significantly by two-fold and 20.1% (P<0.05), respectively, and clearly reduced the loss of product. Microbial composition did not change obviously after inoculating MC1, but the abundance of members of MC1, such as Bacillus and Clostridium, increased clearly on day 3. Finally, the acidogenic fluid improved methane yield significantly (P<0.05) via bioaugmentation.
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Affiliation(s)
- Jiadong Yu
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ye Zhao
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Bin Liu
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yubin Zhao
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jingwei Wu
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xufeng Yuan
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Wanbin Zhu
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Zongjun Cui
- Center of Biomass Engineering/College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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24
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Yuan X, Ma L, Wen B, Zhou D, Kuang M, Yang W, Cui Z. Enhancing anaerobic digestion of cotton stalk by pretreatment with a microbial consortium (MC1). BIORESOURCE TECHNOLOGY 2016; 207:293-301. [PMID: 26896713 DOI: 10.1016/j.biortech.2016.02.037] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/06/2016] [Accepted: 02/09/2016] [Indexed: 05/25/2023]
Abstract
Microbial pretreatment is beneficial in some anaerobic digestion systems, but the consortia used to date have not been able to effectively increase methane production from cotton stalk. In this study, a thermophilic microbial consortium (MC1) was used for pretreatment in order to enhance biogas and methane production yields. The results indicated that the concentrations of soluble chemical oxygen demand and volatile organic products increased significantly in the early stages of pretreatment. Ethanol, acetic acid, propionic acid, and butyric acid were the predominant volatile organic products in the MC1 hydrolysate. Biogas and methane production yields from cotton stalk were significantly increased following MC1 pretreatment. In addition, the methane production rate from the treated cotton stalk was greater than that from the untreated sample.
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Affiliation(s)
- Xufeng Yuan
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Lei Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China
| | - Boting Wen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Dayun Zhou
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China
| | - Meng Kuang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China
| | - Weihua Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China
| | - Zongjun Cui
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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Zhang Q, Li H, Zhu X, Lai F, Zhai Z, Wang Y. Exploration of the key functional proteins from an efficient cellulolytic microbial consortium using dilution-to-extinction approach. J Environ Sci (China) 2016; 43:199-207. [PMID: 27155425 DOI: 10.1016/j.jes.2015.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/21/2015] [Accepted: 09/23/2015] [Indexed: 06/05/2023]
Abstract
In the present study, the cellulose binding proteins (CBPs) secreted by a putative cellulolytic microbial consortium were isolated and purified by affinity digestion. The purified CBPs were subsequently separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Using mass spectrometric analyses, eight CBPs were identified and annotated to be similar to known proteins secreted by Clostridium clariflavum DSM 19732 and Paenibacillus sp. W-61. In addition, in combination with dilution-to-extinction approach and zymogram analysis technique, CBPs 6 (97kDa) and 12 (52kDa) were confirmed to be the key functional proteins that influence cellulolytic activities. Moreover, structural domain analyses and enzymatic activity detection indicated that CBPs 6 and 12 contained glycoside hydrolase families (GH) 9 and 48 catalytic modules, which both revealed endoglucandase and xylanase activities. It was suggested that the coexistence of GH9 and GH48 catalytic domains present in these two proteins could synergistically promote the efficient degradation of cellulose.
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Affiliation(s)
- Qinghua Zhang
- College of Bioscience and Engineering, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Hanguang Li
- College of Bioscience and Engineering, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Xiangdong Zhu
- College of Bioscience and Engineering, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Jiangxi Agricultural University, Nanchang 330045, China
| | - Fenju Lai
- College of Bioscience and Engineering, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Jiangxi Agricultural University, Nanchang 330045, China
| | - Zhijun Zhai
- College of Bioscience and Engineering, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yuanxiu Wang
- College of Bioscience and Engineering, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Jiangxi Agricultural University, Nanchang 330045, China
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Li D, Wang Q, Li J, Li Z, Yuan Y, Yan Z, Mei Z, Liu X. Mesophilic-hydrothermal-thermophilic (M-H-T) digestion of green corn straw. BIORESOURCE TECHNOLOGY 2016; 202:25-32. [PMID: 26700755 DOI: 10.1016/j.biortech.2015.11.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 11/25/2015] [Accepted: 11/29/2015] [Indexed: 06/05/2023]
Abstract
Mesophilic-hydrothermal (80-160 °C, 30 min)-thermophilic (M-H-T) digestion and control tests of mesophilic (M), thermophilic (T), hydrothermal-mesophilic (H-M), and mesophilic-thermophilic digestion (M-T) of green corn straw were conducted for a 20-day fermentation period. The results indicate that M-H-T is an efficient method to improve methane production. A maximum methane yield of 371.74 mL/g volatile solid was obtained by the M (3 days)-H (140 °C)-T (17 days) process, which was 20.44%, 16.55%, 31.44%, and 14.31% higher than the yields of the M, T, 140-M, and M-T processes. The enhanced methane production was attributed to (1) the improved hemicellulose degradation and lignin disorganization; (2) prevention of the degradation of soluble sugar, easily hydrolyzed hemicellulose and cellulose into furfural and methylfurfural; and (3) lack of formation of Maillard reaction products during initial hydrothermal treatment.
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Affiliation(s)
- Dong Li
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China
| | - Qingjing Wang
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China
| | - Jiang Li
- Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China
| | - Zhidong Li
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China
| | - Yuexiang Yuan
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China
| | - Zhiying Yan
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China
| | - Zili Mei
- Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China
| | - Xiaofeng Liu
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
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Nuchdang S, Khemkhao M, Techkarnjanaruk S, Phalakornkule C. Comparative biochemical methane potential of paragrass using an unacclimated and an acclimated microbial consortium. BIORESOURCE TECHNOLOGY 2015; 183:111-119. [PMID: 25727758 DOI: 10.1016/j.biortech.2015.02.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/09/2015] [Accepted: 02/11/2015] [Indexed: 06/04/2023]
Abstract
The effect of inoculum sources on the anaerobic digestion of paragrass was investigated. Two types of sludge were used as the inoculums: an anaerobic sludge obtained from a domestic wastewater treatment plant (OS) and a sludge acclimated to fibrous substrates in raw palm oil mill effluent (AMC). Microbial activity assays showed that the AMC had hydrolytic and acetogenic activities two times greater than the activities of the OS. In addition, the production of methane from acetate by the AMC occurred without a lag phase, while it took 8 days for the OS to start producing methane from the same substrate. The biochemical methane potential after 80 days digestion was 316 ml STP/g VS(added) using the AMC, and 277 ml STP/g VS(added) using the OS. The methane potential of the paragrass was estimated to be 3337 Nm(3) CH4/ha a.
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Affiliation(s)
- Sasikarn Nuchdang
- The Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand; The Research and Technology Center for Renewable Products and Energy, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
| | - Maneerat Khemkhao
- The Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand; The Research and Technology Center for Renewable Products and Energy, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
| | | | - Chantaraporn Phalakornkule
- The Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand; The Research and Technology Center for Renewable Products and Energy, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand; Department of Chemical Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand.
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Dollhofer V, Podmirseg SM, Callaghan TM, Griffith GW, Fliegerová K. Anaerobic Fungi and Their Potential for Biogas Production. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2015; 151:41-61. [PMID: 26337843 DOI: 10.1007/978-3-319-21993-6_2] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Plant biomass is the largest reservoir of environmentally friendly renewable energy on earth. However, the complex and recalcitrant structure of these lignocellulose-rich substrates is a severe limitation for biogas production. Microbial pro-ventricular anaerobic digestion of ruminants can serve as a model for improvement of converting lignocellulosic biomass into energy. Anaerobic fungi are key players in the digestive system of various animals, they produce a plethora of plant carbohydrate hydrolysing enzymes. Combined with the invasive growth of their rhizoid system their contribution to cell wall polysaccharide decomposition may greatly exceed that of bacteria. The cellulolytic arsenal of anaerobic fungi consists of both secreted enzymes, as well as extracellular multi-enzyme complexes called cellulosomes. These complexes are extremely active, can degrade both amorphous and crystalline cellulose and are probably the main reason of cellulolytic efficiency of anaerobic fungi. The synergistic use of mechanical and enzymatic degradation makes anaerobic fungi promising candidates to improve biogas production from recalcitrant biomass. This chapter presents an overview about their biology and their potential for implementation in the biogas process.
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Affiliation(s)
- Veronika Dollhofer
- Bavarian State Research Center for Agriculture, Central Department for Quality Assurance and Analytics, Micro- and Molecular Biology, Lange Point 6, 85354, Freising, Germany,
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