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Liu Y, Ying L, Li H, Awasthi MK, Tian D, He J, Zou J, Lei Y, Shen F. Allophane improves anaerobic digestion of chicken manure by alleviating ammonia inhibition and intensifying direct interspecies electron transfer. BIORESOURCE TECHNOLOGY 2024; 400:130692. [PMID: 38599348 DOI: 10.1016/j.biortech.2024.130692] [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: 01/27/2024] [Revised: 02/26/2024] [Accepted: 04/08/2024] [Indexed: 04/12/2024]
Abstract
Synthesized allophane was employed in anaerobic digestion of chicken manure to improve the stability and methane production under ammonia inhibition. Adding 0.5 %, 1.0 % and 1.5 % (w/w) allophane increased the methane production by 261 ∼ 350 % compared with the group without allophane addition. Further investigation indicated that the maximum adsorption capacity of allophane for NH4+-N achieved at 261.9 mg/g; it suggested that allophane adsorption potentially alleviated the ammonia inhibition, which also was reflected by the increase in the activity of the related enzyme, such as coenzyme F420. Moreover, allophane addition also intensified the direct interspecies electron transfer (DIET) in anaerobic digestion; it can be well supported by the increased relative abundance of Methanosaeta and Methanosarcina involved in the DIET. Overall, the improved anaerobic digestion via alleviating ammonia inhibition and intensifying DIET by allophane was elucidated comprehensively, which can contribute to the development of a functional additive for efficient anaerobic digestion in practical application.
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Affiliation(s)
- Yukun Liu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Keyuan Engineering Technology Testing Center Co., Ltd, Chengdu, Sichuan 611130, PR China
| | - Lanxing Ying
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Keyuan Engineering Technology Testing Center Co., Ltd, Chengdu, Sichuan 611130, PR China
| | - Hui Li
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Keyuan Engineering Technology Testing Center Co., Ltd, Chengdu, Sichuan 611130, PR China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Dong Tian
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Jinsong He
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Jianmei Zou
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Yongjia Lei
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Fei Shen
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Sichuan Provincial Engineering Research Center of Pollution Control in Agriculture, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.
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Wang S, Li X, Dong R, Xiong W, Li Y, Zhu Y. Integration of in-situ and ex-situ power-to-gas (PtG) strategy for simultaneous bio-natural gas production and CO 2 emission reduction. CHEMOSPHERE 2023; 344:140370. [PMID: 37802480 DOI: 10.1016/j.chemosphere.2023.140370] [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: 03/24/2023] [Revised: 09/08/2023] [Accepted: 10/04/2023] [Indexed: 10/10/2023]
Abstract
A novel system integrating an in-situ and ex-situ power-to-gas (PtG) system was developed in the current study. A continuous stirred-tank reactor (CSTR) was operated using cattle manure as substrate at mesophilic temperature (37 °C ± 2 °C). The CH4 content in the biogas was upgraded to above 95% by H2 injection, which meets the highest criteria for grid injection without requiring CO2 removal. Furthermore, the bio-nature gas production was promoted by external CO2 and H2 injection. The volumetric methane production rate (VMPR) was significantly increased by 739% from 117.4 mL L-1·d-1 to 985 mL⋅L-1⋅d-1, which is higher than in other studies. Meanwhile, the volumetric biogas production rate (VBPR) was increased by 36.9% by H2 injection, increasing the conversion efficiency (82.56%) of the chemical oxygen demand (COD) to CH4. A significant increase in the specific methanogenic activity of dissolved hydrogen (SMA(Hdissolved)) and the enrichment in hydrogenotrophic methanogens (Methanobacterium) demonstrate that the CH4 production pathway was converted from acetoclastic methanogenesis (AM) pathway to hydrogenotrophic methanogenesis (HM) pathway. It is postulated that the change in proportion of different pathways of the CH4 production was caused by the strengthening of key enzymes (coenzyme F420 hydrogenase and coenzyme-B sulfoethylthiotransferase) by H2 injection. The integrated system represents a promising approach to achieve simultaneous CO2 emission reduction and bio-natural gas production.
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Affiliation(s)
- Siqi Wang
- College of Engineering, China Agricultural University (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), Beijing, 100083, China
| | - Xin Li
- College of Engineering, China Agricultural University (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), Beijing, 100083, China.
| | - Renjie Dong
- College of Engineering, China Agricultural University (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), Beijing, 100083, China
| | - Wei Xiong
- Hubei Lvxin Ecological Technology Co., Ltd., (Xiangyang Key Laboratory of Agricultural Organic Waste Recycling), Yicheng, 441400, China
| | - Yu Li
- College of Engineering, China Agricultural University (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), Beijing, 100083, China
| | - Yali Zhu
- College of Engineering, China Agricultural University (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), Beijing, 100083, China
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3
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Kalamaras SD, Christou ML, Tzenos CA, Vasileiadis S, Karpouzas DG, Kotsopoulos TA. Investigation of the Critical Biomass of Acclimated Microbial Communities to High Ammonia Concentrations for a Successful Bioaugmentation of Biogas Anaerobic Reactors with Ammonia Inhibition. Microorganisms 2023; 11:1710. [PMID: 37512885 PMCID: PMC10386354 DOI: 10.3390/microorganisms11071710] [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: 05/19/2023] [Revised: 06/19/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
This study aimed to investigate the role of the bioaugmented critical biomass that should be injected for successful bioaugmentation for addressing ammonia inhibition in anaerobic reactors used for biogas production. Cattle manure was used as a feedstock for anaerobic digestion (AD). A mixed microbial culture was acclimated to high concentrations of ammonia and used as a bioaugmented culture. Different volumes of bioaugmented culture were injected in batch anaerobic reactors under ammonia toxicity levels i.e., 4 g of NH4+-N L-1. The results showed that injecting a volume equal to 65.62% of the total working reactor volume yielded the best methane production. Specifically, this volume of bioaugmented culture resulted in methane production rates of 196.18 mL g-1 Volatile Solids (VS) and 245.88 mL g-1 VS after 30 and 60 days of AD, respectively. These rates were not significantly different from the control reactors (30d: 205.94 mL CH4 g-1 VS and 60d: 230.26 mL CH4 g-1 VS) operating without ammonia toxicity. Analysis of the microbial community using 16S rRNA gene sequencing revealed the dominance of acetoclastic methanogen members from the genus Methanosaeta in all reactors.
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Affiliation(s)
- Sotirios D Kalamaras
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria Lida Christou
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Christos A Tzenos
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Sotirios Vasileiadis
- Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Dimitrios G Karpouzas
- Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Thomas A Kotsopoulos
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Niu J, Kong X, Li Q, Zhang Y, Yuan J, Liu J, Zhang Y. Deciphering different effects of ZVI and NaOH on metabolic characteristics in the process of methanogenesis recovery from VFA suppression. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117686. [PMID: 36967692 DOI: 10.1016/j.jenvman.2023.117686] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/10/2023] [Accepted: 03/05/2023] [Indexed: 06/18/2023]
Abstract
Dosing zero valent iron (ZVI) or sodium hydroxide (NaOH) is the common method of addressing acidification in anaerobic digestion (AD) systems; however, few studies have discussed and compared their effects on microbial metabolism. In the present study, microbial syntrophy and metabolic pathways under ZVI and NaOH regulation are comparatively analyzed through microbial network analysis and metagenomic/metaproteomic analyses. CH4 yield in the ZVI reactor was 414 mL/gVS, an increase of 23% when compared with that in the reactor with NaOH dosing (336 mL/gVS). The methanogenesis recovery period in the ZVI reactor (37 days) was shorter than that in the NaOH reactor (48 days). Co-occurrence networks indicated that ZVI promoted Methanoculleus and Methanosarcina to establish a complex syntrophic association with SAO bacteria (Syntrophaceticus and Aminobacterium) and syntrophic acetogens (Syntrophomonas), strengthening SAO-hydrogenotrophic methanogenesis (HM) and acetoclastic methanogenesis (AM) pathways simultaneously. Metagenomic analysis showed that the relative abundance of mcrA and fwdB in the ZVI reactor was higher 27% than that in the NaOH reactor. Furthermore, through metaproteomics analysis, much more enzymes related to glucose degradation, bioconversion of butyric acid and pyruvate, conversion of formate and acetate to CO2, and production of CH4 from acetate and CO2 were significantly upregulated under ZVI regulation than under NaOH regulation (fold change relative to control [FC] > 1.5, p < 0.05). The results of the present study enhance our understanding of methanogenic mechanisms under the regulation of ZVI, providing a theoretical basis for its practical application in AD systems experiencing VFA suppression.
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Affiliation(s)
- Jianan Niu
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong, 030600, China
| | - Xin Kong
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong, 030600, China; School of Environment, Tsinghua University, Beijing, 100084, China; Department of Environmental and Resource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark.
| | - Qingxia Li
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong, 030600, China
| | - Yongmei Zhang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong, 030600, China
| | - Jin Yuan
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong, 030600, China
| | - Jianguo Liu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yifeng Zhang
- Department of Environmental and Resource Engineering, Technical University of Denmark, DK-2800, Lyngby, Denmark.
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5
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Burns M, Qin M. Ammonia recovery from organic nitrogen in synthetic dairy manure with a microbial fuel cell. CHEMOSPHERE 2023; 325:138388. [PMID: 36925004 DOI: 10.1016/j.chemosphere.2023.138388] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/10/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Increasing pressures on the animal and cropland agriculture sectors have led to the realization of problems with animal waste management and ammonia-based fertilizer supply. Bioelectrochemical systems (BES) are a new-age technology that offer a way to address these problems. Microbial fuel cells (MFCs), one type of BES, are traditionally used for electricity generation from microbial degradation of organic matters, but can also be used to recover nutrients from wastes simultaneous with treatment. This research investigated an MFC for ammonia recovery from the organic nitrogen (orgN) fraction of synthetic dairy manure, using the simple amino acid glycine as the orgN source. We used five different synthetic manure compositions to determine their effects on MFC performance, and found minimal sacrifices in performance under orgN conditions when compared to the base condition without orgN. The MFC achieved greater than 90% COD removal in all orgN conditions. Nitrogen (N) removal efficiencies of between 40% and 60% were achieved in orgN conditions, indicating that organic nitrogen can be used as the substrate for ammonia mineralization and further recovery as fertilizer. In addition, we found the MFC was largely populated by electrogenic organisms from the phyla Bacteroidota, Firmicutes, Proteobacteria, and Halobacterota, with organisms in both Bacteroidota and Firmicutes capable of N mineralization present. Lastly, we found that in conditions where orgN is scarce and the only N source provided, microbes preferentially degraded organic matter from other dead organisms, especially as an N source. This increases the concentration of N in the MFC system and introduces important operational constraints for MFCs operated for ammonia recovery from orgN.
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Affiliation(s)
- McKenzie Burns
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Mohan Qin
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA; Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI, 53706, USA.
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6
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Luiz FN, Passarini MRZ, Magrini FE, Gaio J, Somer JG, Meyer RF, Paesi S. Metataxonomic characterization of the microbial community involved in the production of biogas with microcrystalline cellulose in pilot and laboratory scale. World J Microbiol Biotechnol 2023; 39:184. [PMID: 37147463 DOI: 10.1007/s11274-023-03573-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/08/2023] [Indexed: 05/07/2023]
Abstract
Biogas, produced in anaerobic digestion, is a sustainable alternative for generating energy from agro-industrial and municipal waste. Information from the microbiota active in the process expands the possibilities for technological innovation. In this study, taxonomic annotations, and functional prediction of the microbial community of the inoculum of two processes were carried out: an industrial unit (pilot-scale urban solid waste plant-IU) and a laboratory-scale reactor fed with swine and cattle waste (LS). The biochemical potential of biogas was obtained using tested inoculum with microcrystalline cellulose, obtaining 682 LN/kgVS (LSC-laboratory scale inoculum and microcrystalline cellulose), and 583 LN/kgVS (IUC-industrial unit inoculum and microcrystalline cellulose), which is equivalent to a recovery of 91.5% of total biogas to LSC. The phyla Synergistota and Firmicutes were more abundant in LS/LSC. In the IU/IUC (treatment of restaurant waste and customs seizures), there was a greater microbiological variety and a predominance of the Bacteroidota, Cloacimonadota, Firmicutes and Caldatribacteriota. The genus Methanosaeta predominated in the process, and it was possible to infer the genes (K01895, K00193 and K00625) related to acetoclastic pathway, as well as endoglucanases that are involved in the metabolism of cellulose (LSC). Terpenoids, polyketides, cofactors, and vitamin metabolism were higher in reactors that received different substrates (IU; IUC). The taxonomic and functional differences revealed the importance of determining the microbiota in the analysis of the potential of an inoculum, combined with the use of microcrystalline cellulose, which can provide optimization information in the production of clean energy.
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Affiliation(s)
- Franciele Natividade Luiz
- International Center of Renewable Energy (CIBIOGAS-ER)-Itaipu, Foz do Iguaçu, PR, Brazil
- Federal University of Latin American Integration (UNILA)-Environmental Biotechnology Laboratory, Foz do Iguaçu, PR, Brazil
| | | | - Flaviane Eva Magrini
- Molecular Diagnostic Laboratory, Biotechnology Institute, University of Caxias Do Sul (UCS), Caxias do Sul, RS, 95070-560, Brazil
| | - Juliano Gaio
- Molecular Diagnostic Laboratory, Biotechnology Institute, University of Caxias Do Sul (UCS), Caxias do Sul, RS, 95070-560, Brazil
| | - Juliana Gaio Somer
- International Center of Renewable Energy (CIBIOGAS-ER)-Itaipu, Foz do Iguaçu, PR, Brazil
- Federal University of Latin American Integration (UNILA)-Environmental Biotechnology Laboratory, Foz do Iguaçu, PR, Brazil
| | - Rafaela Faust Meyer
- International Center of Renewable Energy (CIBIOGAS-ER)-Itaipu, Foz do Iguaçu, PR, Brazil
- Federal University of Latin American Integration (UNILA)-Environmental Biotechnology Laboratory, Foz do Iguaçu, PR, Brazil
| | - Suelen Paesi
- Molecular Diagnostic Laboratory, Biotechnology Institute, University of Caxias Do Sul (UCS), Caxias do Sul, RS, 95070-560, Brazil.
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Hoang AT, Goldfarb JL, Foley AM, Lichtfouse E, Kumar M, Xiao L, Ahmed SF, Said Z, Luque R, Bui VG, Nguyen XP. Production of biochar from crop residues and its application for anaerobic digestion. BIORESOURCE TECHNOLOGY 2022; 363:127970. [PMID: 36122843 DOI: 10.1016/j.biortech.2022.127970] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/08/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
Anaerobic digestion (AD) is a viable and cost-effective method for converting organic waste into usable renewable energy. The efficiency of organic waste digestion, nonetheless, is limited due to inhibition and instability. Accordingly, biochar is an effective method for improving the efficiency of AD by adsorbing inhibitors, promoting biogas generation and methane concentration, maintaining process stability, colonizing microorganisms selectively, and mitigating the inhibition of volatile fatty acids and ammonia. This paper reviews the features of crop waste-derived biochar and its application in AD systems. Four critical roles of biochar in AD systems were identified: maintaining pH stability, promoting hydrolysis, enhancing the direct interspecies electron transfer pathway, and supporting microbial development. This work also highlights that the interaction between biochar dose, amount of organic component in the substrate, and inoculum-to-substrate ratio should be the focus of future research before deploying commercial applications.
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Affiliation(s)
- Anh Tuan Hoang
- Institute of Engineering, HUTECH University, Ho Chi Minh City, Vietnam.
| | - Jillian L Goldfarb
- Cornell University Department of Biological and Environmental Engineering, Ithaca, NY, United States of America
| | - Aoife M Foley
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Ashby Building, Belfast BT9 5AH, United Kingdom; Civil, Structural and Environmental Engineering, Trinity College Dublin, Dublin 2, Ireland
| | - Eric Lichtfouse
- Aix-Marseille Univ, CNRS, IRD, INRAE, CEREGE, Avenue Louis Philibert, Aix en Provence 13100, France
| | - Manish Kumar
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, India
| | - Leilei Xiao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Shams Forruque Ahmed
- Science and Math Program, Asian University for Women, Chattogram 4000, Bangladesh
| | - Zafar Said
- Department of Sustainable and Renewable Energy Engineering, University of Sharjah, P. O. Box 27272, Sharjah, United Arab Emirates; U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Rafael Luque
- Departamento de Química Orgánica, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie, Ctra. Nnal. IV-A, Km. 396, E-14014 Cordoba, Spain; Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Str., 117198 Moscow, Russian Federation
| | - Van Ga Bui
- University of Science and Technology, The University of Da Nang, Da Nang, Viet Nam
| | - Xuan Phuong Nguyen
- PATET Research Group, Ho Chi Minh City University of Transport, Ho Chi Minh City, Vietnam
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Zhang L, Gong X, Xu R, Guo K, Wang L, Zhou Y. Responses of mesophilic anaerobic sludge microbiota to thermophilic conditions: Implications for start-up and operation of thermophilic THP-AD systems. WATER RESEARCH 2022; 216:118332. [PMID: 35364350 DOI: 10.1016/j.watres.2022.118332] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 02/20/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Anaerobic digestion (AD) has been widely employed for wastewater and organic waste treatment, in which methanogenesis is highly driven by close microbial interactions among intricate microbial communities. However, the ecological processes underpinning the community assembly that support methanogenesis in such engineered ecosystems remain largely unknown, especially when exposed to challenging circumstances (e.g., high temperature, ammonium content). Here, eight AD bioreactors were seeded with four different inocula (two from full-scale mesophilic AD systems and the other two from lab-scale mesophilic AD systems), and were operated under thermophilic conditions (55 °C) for treating thermal hydrolysis process (THP) pre-treated waste activated sludge to investigate how mesophilic community responds to thermophilic conditions during the long-term cultivation. Results showed that the inocula collected from the full-scale systems were more resilient than that from the lab-scale systems, which may be primarily attributed to indigenous robust methanogens. As a result, the former efficiently generated methane which was predominantly contributed by Methanothermobacter and Methanosarcina (healthy AD ecosystem), while methanogenic activity was remarkably prohibited in the latter (dysfunctional AD ecosystem). Thermophilic environment was a strong selection force, resulting in the convergence of microbial communities in both the healthy and dysfunctional AD ecosystems. Deterministic processes predominated the community assembly regardless of AD ecosystem function, but stronger influences of stochastic processes were observed in dysfunctional AD ecosystems, which was likely attributable from the stronger effect of immigrants from the feedstock. As indicated by molecular ecological network analysis, the microbial network structures in the healthy AD ecosystems were more stable than those in the dysfunctional AD ecosystems. Although keystone taxa were different among the bioreactors, most of which played vital roles in organic hydrolysis/fermentation. To sum up, this study greatly improved our understanding of the relationships between microbiological traits and AD ecosystem function under thermophilic conditions, which could provide useful information to guide thermophilic AD (e.g., THP-AD) start-up and health diagnosis during operation.
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Affiliation(s)
- Liang Zhang
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Xianzhe Gong
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Ronghua Xu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Kun Guo
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Li Wang
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Yan Zhou
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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Perruchon C, Katsivelou E, Karas PA, Vassilakis S, Lithourgidis AA, Kotsopoulos TA, Sotiraki S, Vasileiadis S, Karpouzas DG. Following the route of veterinary antibiotics tiamulin and tilmicosin from livestock farms to agricultural soils. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128293. [PMID: 35066227 DOI: 10.1016/j.jhazmat.2022.128293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/03/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Veterinary antibiotics (VAs) are not completely metabolized in the animal body. Hence, when animal excretes are used as soil manures, VA residues are dispersed with potential implications for environmental quality and human health. We studied the persistence of tiamulin (TIA) and tilmicosin (TLM) along their route from pig administration to fecal excretion and to agricultural soils. TLM was detected in feces at levels folds higher (4.27-749.6 μg g-1) than TIA (0.55-5.99 μg g-1). Different administration regimes (feed or water) showed different excretion patterns and residual levels for TIA and TLM, respectively. TIA and TLM (0.5, 5 and 50 μg g-1) dissipated gradually from feces when stored at ambient conditions (DT50 5.85-35.9 and 23.5-49.8 days respectively), while they persisted longer during anaerobic digestion (DT90 >365 days) with biomethanation being adversely affected at VA levels > 5 μg g-1. When applied directly in soils, TLM was more persistent than TIA with soil fumigation extending their persistence suggesting microbial degradation, while soil application through feces increased their persistence, probably due to increased sorption to the fecal organic matter. The use of TIA- and TLM-contaminated feces as manures is expected to lead to VAs dispersal with unexplored consequences for the environment and human health.
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Affiliation(s)
- C Perruchon
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece
| | - E Katsivelou
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece
| | - P A Karas
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece
| | - S Vassilakis
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece; University of Patras, Department of Pharmacy, Laboratory of Molecular Biology and Immunology, Patras, Greece
| | - A A Lithourgidis
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - T A Kotsopoulos
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - S Sotiraki
- Hellenic Agricultural Organization - Demeter, Veterinary Research Institute, Group of Parasitology, Thermi, 57100 Thessaloniki, Greece
| | - S Vasileiadis
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece
| | - D G Karpouzas
- Laboratory of Plant and Environmental Biotechnology, Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece.
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Saba M, Khan A, Ali H, Bibi A, Gul Z, Khan A, Rehman MMU, Badshah M, Hasan F, Shah AA, Khan S. Microbial Pretreatment of Chicken Feather and Its Co-digestion With Rice Husk and Green Grocery Waste for Enhanced Biogas Production. Front Microbiol 2022; 13:792426. [PMID: 35464983 PMCID: PMC9022067 DOI: 10.3389/fmicb.2022.792426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 02/07/2022] [Indexed: 11/30/2022] Open
Abstract
To utilize wastes and residues sustainably and excellently, there is a need to fend for efficient methods and resources for biogas production. Use of poultry waste for biogas production represents one of the most important routes toward reaching global renewable energy targets. The current study involves microbial pretreatment of chicken feather waste, followed by its co-digestion with rice husk and green grocery waste in batch and continuous reactors, respectively. Microbial pretreatment of chicken feathers by keratinase secreting Pseudomonas aeruginosa was an effective and eco-friendly approach to make its recalcitrant structure available as a raw substrate for biogas production. The current study also addressed the enhancement and stability of anaerobic digestion by co-digestion. Results demonstrated that biogas production was increased by microbial pretreatment of chicken feathers and that the percentage increase in biogas yield was 1.1% in microbialy pretreated feathers compared to mono-digestion (non-pretreated feathers) in batch fermentation. The highest yield of biogas was obtained in a batch reactor having co-digestion of pretreated rice husk and microbial pretreated chicken feathers. The co-digestion of chicken feathers hydrolysate with green grocery waste in continuous fermentation mode has also enhanced the biogas yield as compared to average of mono-digestion (chicken feather hydrolysate and green grocery waste) and, therefore, improve the efficiency of the overall process.
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Affiliation(s)
- Marium Saba
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Anum Khan
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Huma Ali
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Amna Bibi
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Zeeshan Gul
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Alam Khan
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Maqsood Ur Rehman
- State Key Laboratory, Grassland Argo-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Malik Badshah
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Fariha Hasan
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Aamer Ali Shah
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Samiullah Khan
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- *Correspondence: Samiullah Khan,
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11
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Harirchi S, Wainaina S, Sar T, Nojoumi SA, Parchami M, Parchami M, Varjani S, Khanal SK, Wong J, Awasthi MK, Taherzadeh MJ. Microbiological insights into anaerobic digestion for biogas, hydrogen or volatile fatty acids (VFAs): a review. Bioengineered 2022; 13:6521-6557. [PMID: 35212604 PMCID: PMC8973982 DOI: 10.1080/21655979.2022.2035986] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/20/2021] [Accepted: 01/17/2022] [Indexed: 11/02/2022] Open
Abstract
In the past decades, considerable attention has been directed toward anaerobic digestion (AD), which is an effective biological process for converting diverse organic wastes into biogas, volatile fatty acids (VFAs), biohydrogen, etc. The microbial bioprocessing takes part during AD is of substantial significance, and one of the crucial approaches for the deep and adequate understanding and manipulating it toward different products is process microbiology. Due to highly complexity of AD microbiome, it is critically important to study the involved microorganisms in AD. In recent years, in addition to traditional methods, novel molecular techniques and meta-omics approaches have been developed which provide accurate details about microbial communities involved AD. Better understanding of process microbiomes could guide us in identifying and controlling various factors in both improving the AD process and diverting metabolic pathway toward production of selective bio-products. This review covers various platforms of AD process that results in different final products from microbiological point of view. The review also highlights distinctive interactions occurring among microbial communities. Furthermore, assessment of these communities existing in the anaerobic digesters is discussed to provide more insights into their structure, dynamics, and metabolic pathways. Moreover, the important factors affecting microbial communities in each platform of AD are highlighted. Finally, the review provides some recent applications of AD for the production of novel bio-products and deals with challenges and future perspectives of AD.
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Affiliation(s)
- Sharareh Harirchi
- Swedish Centre for Resource Recovery, University of Borås, 50190Borås, Sweden
| | - Steven Wainaina
- Swedish Centre for Resource Recovery, University of Borås, 50190Borås, Sweden
| | - Taner Sar
- Swedish Centre for Resource Recovery, University of Borås, 50190Borås, Sweden
| | - Seyed Ali Nojoumi
- Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | - Milad Parchami
- Swedish Centre for Resource Recovery, University of Borås, 50190Borås, Sweden
| | - Mohsen Parchami
- Swedish Centre for Resource Recovery, University of Borås, 50190Borås, Sweden
| | - Sunita Varjani
- Paryavaran Bhavan, Gujarat Pollution Control Board, Gandhinagar, Gujarat, India
| | - Samir Kumar Khanal
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Jonathan Wong
- Department of Biology, Institute of Bioresource and Agriculture and, Hong Kong Baptist University, Hong Kong
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3#, Yangling, Shaanxi, 712100, China
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12
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Dai C, Yang L, Wang J, Li D, Zhang Y, Zhou X. Enhancing anaerobic digestion of pharmaceutical industries wastewater with the composite addition of zero valent iron (ZVI) and granular activated carbon (GAC). BIORESOURCE TECHNOLOGY 2022; 346:126566. [PMID: 34921919 DOI: 10.1016/j.biortech.2021.126566] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Anaerobic digestion of pharmaceutical wastewater is challenged by its contained toxic compounds which limits the stability and efficiency of methane production and organic degradation. In this study, zero valent iron (ZVI) and granular activated carbon (GAC) were added with different strategies to improve anaerobic digestion of pharmaceutical wastewater. The results confirmed synergy effects of ZVI + GAC for both COD removal (increased by 13.4%) and methane production (increased by 11.0%). Furthermore, ZVI + GAC improved the removal of pharmaceutical intermediates, in particular, the residues (%) of dehydroepiandrosterone (DHEA) and 2,2'-methylenebis(6-tert-butyl-4-methylphenol) were only 30.48 ± 6.53 and 39.92 ± 4.50, and effectively reduced biotoxicity. The promoted results were attributed to the establishment of direct interspecies electron transfer (DIET). Microbial community analysis revealed that ZVI + GAC decreased species evenness and richness in bacterial whereas increased in archaeal. The relative abundance of acetotrophic methanogens decreased but hydrogenotrophic and methylotrophic methanogens increased, which broadening the pathway of methane production.
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Affiliation(s)
- Chenbo Dai
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Libin Yang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, PR China
| | - Jun Wang
- SPH XingLing Sci&Tech.Pharmaceutical Co.,Ltd., Shanghai 201703, PR China
| | - Dezhen Li
- SPH XingLing Sci&Tech.Pharmaceutical Co.,Ltd., Shanghai 201703, PR China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, PR China.
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13
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Mohanty A, Mankoti M, Rout PR, Meena SS, Dewan S, Kalia B, Varjani S, Wong JW, Banu JR. Sustainable utilization of food waste for bioenergy production: A step towards circular bioeconomy. Int J Food Microbiol 2022; 365:109538. [DOI: 10.1016/j.ijfoodmicro.2022.109538] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/10/2021] [Accepted: 01/08/2022] [Indexed: 10/19/2022]
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14
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Christou ML, Vasileiadis S, Karpouzas DG, Angelidaki I, Kotsopoulos TA. Effects of organic loading rate and hydraulic retention time on bioaugmentation performance to tackle ammonia inhibition in anaerobic digestion. BIORESOURCE TECHNOLOGY 2021; 334:125246. [PMID: 33971537 DOI: 10.1016/j.biortech.2021.125246] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/24/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
Three continuously stirred-tank reactors fed with manure operating under high ammonia levels (5.0 g NH3-N L-1) and with increased organic loading rate (OLR), (2.09 R1, 3.02 R2 and 4.0 R3 g VS L-1 d-1), achieved through glucose amendment in R2 and R3, were inoculated with an ammonia-acclimatized microbial culture. Successful bioaugmentation was endured only in R2 and R3, both reactors characterized by high OLR, resulting in 19.6 and 24.5% increase in methane production, respectively. The high OLRs in these reactors favored the co-occurrence of the hydrogenotrophic (Methanobacteriaceae), methylotrophic (Methanomethylophilaceae) and aceticlastic methanogenic pathways. The latter was supported by the successful establishment of ammonium-tolerant Methanosarcina, prevailing in the inoculum. Oppositely in R1, the low OLR prevented the establishment of Methanosarcina, leading to an exclusive hydrogenotrophic methanogenesis and reduced methane production. HRT shortening resulted in limited effect on biomethane performance, indicating a well establishment of the introduced bioaugmentation culture in the reactors.
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Affiliation(s)
- M L Christou
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - S Vasileiadis
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa GR-41500, Greece
| | - D G Karpouzas
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa GR-41500, Greece
| | - I Angelidaki
- Department of Chemical Engineering, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark
| | - T A Kotsopoulos
- Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece.
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15
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Ling Z, Thakur N, El-Dalatony MM, Salama ES, Li X. Protein biomethanation: insight into the microbial nexus. Trends Microbiol 2021; 30:69-78. [PMID: 34215486 DOI: 10.1016/j.tim.2021.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 06/08/2021] [Accepted: 06/08/2021] [Indexed: 01/01/2023]
Abstract
Biomethanation of carbohydrates (e.g., lignocellulosic biomass) and lipids (e.g., waste oils) has been well studied. However, investigations on the biomethanation of protein-rich biowastes (PRBs) and associated microbial communities have not been reported. This review summarizes the challenges in the metabolic process of anaerobic digestion of PRBs and the microbial instability associated with it. We discuss the diversity of bacterial and archaeal communities via metagenomics under PRB mono- and codigestion. A stable community structure with enhanced metabolic activity is a core factor in PRB biomethanation. The application of strategies such as codigestion of PRBs with carbon-rich biomass and microbial stimulation/augmentation would make PRB biomethanation more feasible.
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Affiliation(s)
- Zhenmin Ling
- MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, Gansu Province, PR China
| | - Nandini Thakur
- MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, Gansu Province, PR China; Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou 730000, Gansu Province, PR China
| | - Marwa M El-Dalatony
- MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, Gansu Province, PR China
| | - El-Sayed Salama
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou 730000, Gansu Province, PR China.
| | - Xiangkai Li
- MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, Gansu Province, PR China.
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16
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Xu Y, Geng H, Chen R, Liu R, Dai X. Enhancing methanogenic fermentation of waste activated sludge via isoelectric-point pretreatment: Insights from interfacial thermodynamics, electron transfer and microbial community. WATER RESEARCH 2021; 197:117072. [PMID: 33784610 DOI: 10.1016/j.watres.2021.117072] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 05/21/2023]
Abstract
The usefulness of waste activated sludge (WAS) as an energy source is limited by the poor generation efficiency of methane from WAS, which is mainly due to the complex nature of sludge and low abundance of functional microbes. In this study, the interfacial thermodynamics, electron transfer and microbial community of sludge were investigated to reveal the enhancing effects of isoelectric-point (pI) pretreatment on the efficiency of methane generation from WAS. Experimentally, after pI pretreatment, the methane production potential, maximum methane production rate and maximum methane proportion in the biogas increased by 122.2%, 154.4% and 17.4%, respectively, indicating that pI pretreatment enhanced the generation efficiency of methane. Analyses of changes in the solid-liquid interfacial non-covalent interaction energy, electron transfer capacity (ETC) and reductive peak potential values of sludge samples with and without pI pretreatment during a 170-day methanogenic fermentation period revealed that pI pretreatment enhanced the self-driven solid-liquid interfacial hydrophobic attractions of sludge, increased the abiotic driving forces of interfacial enzymatic reactions, promoted the electron transfer efficiency and lowered the barrier of the reduction reaction. It was thus hypothesised that these changes would be responsible for increasing methane production, which was confirmed by the correlation analyses between the interfacial free energy (IFE) and ETC versus daily methane production. Moreover, statistical analyses of the differences between the microbial communities of sludge samples with and without pI pretreatment during fermentation demonstrated that pI pretreatment significantly (P < 0.05) improved the relative abundances of the main functional microbes with respect to hydrolysis, acidification and methanation. A further investigation of the relationships of IFE and ETC with the relative abundances of the main genera of methanogens indicated that the hydrophobic attraction of sludge surface and a high ETC are conducive to the enrichment of hydrogenotrophic methanogens (+29.9%). These findings are expected to provide a conceptual framework for developing second-generation pretreatment methods and provide a methodological reference for revealing the details of the 'black-box' anaerobic digestion process.
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Affiliation(s)
- Ying Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Hui Geng
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Renjie Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Rui Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
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17
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Hashemi S, Hashemi SE, Lien KM, Lamb JJ. Molecular Microbial Community Analysis as an Analysis Tool for Optimal Biogas Production. Microorganisms 2021; 9:microorganisms9061162. [PMID: 34071282 PMCID: PMC8226781 DOI: 10.3390/microorganisms9061162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/17/2021] [Accepted: 05/26/2021] [Indexed: 11/16/2022] Open
Abstract
The microbial diversity in anaerobic digestion (AD) is important because it affects process robustness. High-throughput sequencing offers high-resolution data regarding the microbial diversity and robustness of biological systems including AD; however, to understand the dynamics of microbial processes, knowing the microbial diversity is not adequate alone. Advanced meta-omic techniques have been established to determine the activity and interactions among organisms in biological processes like AD. Results of these methods can be used to identify biomarkers for AD states. This can aid a better understanding of system dynamics and be applied to producing comprehensive models for AD. The paper provides valuable knowledge regarding the possibility of integration of molecular methods in AD. Although meta-genomic methods are not suitable for on-line use due to long operating time and high costs, they provide extensive insight into the microbial phylogeny in AD. Meta-proteomics can also be explored in the demonstration projects for failure prediction. However, for these methods to be fully realised in AD, a biomarker database needs to be developed.
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Affiliation(s)
- Seyedbehnam Hashemi
- Department of Energy and Process Engineering & Enersense, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway; (S.H.); (S.E.H.); (K.M.L.)
| | - Sayed Ebrahim Hashemi
- Department of Energy and Process Engineering & Enersense, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway; (S.H.); (S.E.H.); (K.M.L.)
| | - Kristian M. Lien
- Department of Energy and Process Engineering & Enersense, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway; (S.H.); (S.E.H.); (K.M.L.)
| | - Jacob J. Lamb
- Department of Energy and Process Engineering & Enersense, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway; (S.H.); (S.E.H.); (K.M.L.)
- Department of Electronic Systems, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway
- Correspondence:
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18
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Abstract
In the biogas plants, organic material is converted to biogas under anaerobic conditions through physical and biochemical processes. From supply of the raw material to the arrival of the products to customers, there are serial processes which should be sufficiently monitored for optimizing the efficiency of the whole process. In particular, the anaerobic digestion process, which consists of sequential complex biological reactions, requires improved monitoring to prevent inhibition. Conventional implemented methods at the biogas plants are not adequate for monitoring the operational parameters and finding the correlation between them. As Artificial Intelligence has been integrated in different areas of life, the integration of it into the biogas production process will be inevitable for the future of the biogas plant operation. This review paper first examines the need for monitoring at the biogas plants with giving details about the process and process monitoring as well. In the following sections, the current situation of implementations of Artificial Intelligence in the biogas plant operation and in the similar industries will be represented. Moreover, considering that all the information gathered from literature and operational needs, an implementation model will be presented.
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