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Jaman K, Idrus S, Wahab AMA, Harun R, Daud NNN, Ahsan A, Shams S, Uddin MA. Influence of Molasses Residue on Treatment of Cow Manure in an Anaerobic Filter with Perforated Weed Membrane and a Conventional Reactor: Variations of Organic Loading and a Machine Learning Application. MEMBRANES 2023; 13:159. [PMID: 36837662 PMCID: PMC9966026 DOI: 10.3390/membranes13020159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/16/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
This study highlighted the influence of molasses residue (MR) on the anaerobic treatment of cow manure (CM) at various organic loading and mixing ratios of these two substrates. Further investigation was conducted on a model-fitting comparison between a kinetic study and an artificial neural network (ANN) using biomethane potential (BMP) test data. A continuous stirred tank reactor (CSTR) and an anaerobic filter with a perforated membrane (AF) were fed with similar substrate at the organic loading rates of (OLR) 1 to OLR 7 g/L/day. Following the inhibition signs at OLR 7 (50:50 mixing ratio), 30:70 and 70:30 ratios were applied. Both the CSTR and the AF with the co-digestion substrate (CM + MR) successfully enhanced the performance, where the CSTR resulted in higher biogas production (29 L/d), SMP (1.24 LCH4/gVSadded), and VS removal (>80%) at the optimum OLR 5 g/L/day. Likewise, the AF showed an increment of 69% for biogas production at OLR 4 g/L/day. The modified Gompertz (MG), logistic (LG), and first order (FO) were the applied kinetic models. Meanwhile, two sets of ANN models were developed, using feedforward back propagation. The FO model provided the best fit with Root Mean Square Error (RMSE) (57.204) and correlation coefficient (R2) 0.94035. Moreover, implementing the ANN algorithms resulted in 0.164 and 0.97164 for RMSE and R2, respectively. This reveals that the ANN model exhibited higher predictive accuracy, and was proven as a more robust system to control the performance and to function as a precursor in commercial applications as compared to the kinetic models. The highest projection electrical energy produced from the on-farm scale (OFS) for the AF and the CSTR was 101 kWh and 425 kWh, respectively. This investigation indicates the high potential of MR as the most suitable co-substrate in CM treatment for the enhancement of energy production and the betterment of waste management in a large-scale application.
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Affiliation(s)
- Khairina Jaman
- Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Syazwani Idrus
- Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Abdul Malek Abdul Wahab
- School of Mechanical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia
| | - Razif Harun
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Nik Norsyahariati Nik Daud
- Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Amimul Ahsan
- Department of Civil and Environmental Engineering, Islamic University of Technology (IUT), Gazipur 1704, Bangladesh
- Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne, VIC 3000, Australia
| | - Shahriar Shams
- Faculty of Engineering, Universiti Teknologi Brunei, Gadong BE1410, Brunei
| | - Md. Alhaz Uddin
- Department of Civil Engineering, College of Engineering, Jouf University, Sakaka 42421, Saudi Arabia
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Hoffmann N, Fincheira P, Tortella G, Rubilar O. The role of iron nanoparticles on anaerobic digestion: mechanisms, limitations, and perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:82619-82631. [PMID: 36219292 DOI: 10.1007/s11356-022-23302-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Anaerobic digestion (AD) is the most widely used technology for organic matter treatment. However, multiple types of research have reported on improving the process because different operation inhibition factors and limitations affect the performance of AD process. Owing to the increasing use of iron-nanoparticles (Fe-NP) on AD, this review addresses the knowledge gaps and summarizes the finding from academic articles based on (i) the AD upgrading operations: limitations and upgrade techniques, (ii) Fe-NPs mechanisms on AD, (iii) Fe-NP effect on microbial communities associated to AD systems, and (iv) perspectives. The selected topics give the Fe-NP positive effects on the AD methane-production process in terms of gas production, effluent quality, and process optimization. The main results of this work indicate that (i) Fe-NP addition can be adapted among different feedstocks and complement other pretreatments, (ii) Fe-NP physicochemical characteristics enhance biogas production via direct interspecies electron transfer (DIET) mechanisms, and Fe-ion release due to their structure and their conductivity capability, and (iii) syntrophic bacteria and acetoclastic methanogens have been reported as the communities that better uptake Fe-NPs on their metabolisms. Finally, our research perspectives and gaps will be discussed to contribute to our knowledge of using Fe-NPs on AD systems.
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Affiliation(s)
- Nicolás Hoffmann
- Biotechnological Research Center Applied to the Environment (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile
| | - Paola Fincheira
- Biotechnological Research Center Applied to the Environment (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile
| | - Gonzalo Tortella
- Biotechnological Research Center Applied to the Environment (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile
| | - Olga Rubilar
- Biotechnological Research Center Applied to the Environment (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile.
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile.
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Gómez-Quiroga X, Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Successful and stable operation of anaerobic thermophilic co-digestion of sun-dried sugar beet pulp and cow manure under short hydraulic retention time. CHEMOSPHERE 2022; 293:133484. [PMID: 34990719 DOI: 10.1016/j.chemosphere.2021.133484] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/02/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
This work consists of a long-term (621 days) experimental study about biogas production from sun dried sugar beet pulp and cow manure. Thermophilic (55 °C) anaerobic co-digestion was performed in semi-continuous reactors, testing ten hydraulic retention times (30-3 days) (HRTs) and organic loading rates (2-24 gVS/Lreactor∙d) (OLRs). Results showed that the best global system performance (regarding stability, biogas production, and organic matter removal) was achieved at an HRT as short as 5 days (OLR of 12.47 gVS/Lreactor∙d) with a biogas yield of 315 mL/gVSadded. The gradual OLR increase allowed system control and time-appropriate intervention, avoiding irreversible process disturbances and maintaining admissible acidity/alkalinity ratios (<0.8) for HRTs ranging from 30 to 4 days. The accumulation of acetic acid was the main cause of the process disturbance observed at short HRTs. It was deduced that for the HRT of 3 days, the methane productivity was mainly owing to the hydrogen-utilizing methanogens pathway. This research clearly shows how an adequate combination of agro-industrial wastes and livestock manure could be processed by anaerobic co-digestion in short HRTs with great efficiency and stability and deepens in the understanding of the start-up, stability and optimization of the co-digestion.
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Affiliation(s)
- Xiomara Gómez-Quiroga
- Department of Chemical Engineering and Food Technology, Faculty of Science, University of Cádiz - International Campus of Excellence (ceiA3), P.O. Box No 40, 11510, Puerto Real, Cádiz, Spain
| | - Kaoutar Aboudi
- Department of Chemical Engineering and Food Technology, Faculty of Science, University of Cádiz - International Campus of Excellence (ceiA3), P.O. Box No 40, 11510, Puerto Real, Cádiz, Spain
| | - Carlos José Álvarez-Gallego
- Department of Chemical Engineering and Food Technology, Faculty of Science, University of Cádiz - International Campus of Excellence (ceiA3), P.O. Box No 40, 11510, Puerto Real, Cádiz, Spain.
| | - Luis Isidoro Romero-García
- Department of Chemical Engineering and Food Technology, Faculty of Science, University of Cádiz - International Campus of Excellence (ceiA3), P.O. Box No 40, 11510, Puerto Real, Cádiz, Spain
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Valorization of sugar beet pulp through biotechnological approaches: recent developments. Biotechnol Lett 2021; 43:1253-1263. [PMID: 33978884 DOI: 10.1007/s10529-021-03146-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 05/05/2021] [Indexed: 01/21/2023]
Abstract
Sugar beet pulp (SBP) is a valuable by-product of the sugar beet industry and is predominantly composed of cellulose, hemicellulose, and pectin. It is commonly used as livestock feed because of its palatability, good energy levels, and highly digestible fibers such as pectins and glucans. However, the utilization of SBP for the production of value-added products via biotechnological approaches is gaining significance in recent years owing to its potential as a cost-effective nutrient source and technological advancements in its processing. SBP can be used as a substrate for bio-production of microbial enzymes, single cell protein, alcohols (e.g., ethanol), methane/biogas, hydrogen, lactic acid, ferulic acid, and pectic oligosaccharides. SBP can also be used as a carrier for cell immobilization in fermentation processes. This review focused on recent developments in biotechnological valorization of SBP.
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Szaja A, Montusiewicz A, Lebiocka M, Bis M. The effect of brewery spent grain application on biogas yields and kinetics in co-digestion with sewage sludge. PeerJ 2021; 8:e10590. [PMID: 33391884 PMCID: PMC7761201 DOI: 10.7717/peerj.10590] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 11/25/2020] [Indexed: 11/20/2022] Open
Abstract
The present study examines the effect of introducing dried brewery spent grain (BSG), known as the main solid by-product of the brewery industry on biogas yields and kinetics in co-digestion with sewage sludge (SS). The experiment was conducted in semi-continuous anaerobic reactors (supplied once a day) operating under mesophilic conditions (35°C) at different hydraulic retention times (HRT) of 18 and 20 d. In co-digestion runs, the BSG mass to the feed volume ratio was constant and maintained 1:10.The results indicated that the addition of BSG did not influence the biogas production, by comparison with SS mono-digestion (control run). At HRT of 18 d, in the co-digestion run, the average methane yield was 0.27 m3 kg/VSadded, while in the control run the higher value of 0.29 m3 kg/VSaddedwas observed. However, there was no difference in terms of statistical significance. At HRT of 20 d, the methane yield was 0.21 m3 kg/VSadded for both mono- and co-digestion runs. In the BSG presence, the decrease in kinetic constant values was observed. As compared to SS mono-digestion, reductions by 21 and 35% were found at HRT of 20 and 18 d, respectively. However, due to the supplementation of the feedstock with BSG rich in organic compounds, the significantly enhanced energy profits were achieved with the highest value of approx. 40% and related to the longer HRT of 20 d. Importantly, the mono- and co-digestion process proceeded in stable manner. Therefore, the anaerobic co-digestion of SS and BSG might be considered as a cost-effective solution that could contribute to the energy self-efficiency of wastewater treatment plants (WWTPs) and sustainable waste management for breweries.
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Affiliation(s)
- Aleksandra Szaja
- Faculty of Environmental Engineering, Lublin University of Technology, Lublin, Poland
| | | | - Magdalena Lebiocka
- Faculty of Environmental Engineering, Lublin University of Technology, Lublin, Poland
| | - Marta Bis
- Faculty of Environmental Engineering, Lublin University of Technology, Lublin, Poland
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Rusín J, Chamrádová K, Basinas P. Two-stage psychrophilic anaerobic digestion of food waste: Comparison to conventional single-stage mesophilic process. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 119:172-182. [PMID: 33068884 DOI: 10.1016/j.wasman.2020.09.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/16/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
Food waste collected exclusively from University restaurant was tested under anaerobic digestion (AD) conditions to determine its biomethane generation potential. The digestion characteristics of food waste were evaluated in BMP tests and in a conventional single-stage mesophilic CST Reactor. The suitability of psychrophilic two-stage AD to convert food waste was investigated by using a novel two-stage psychrophilic semi-continuous reactor, consisted of a vertically-oriented cylindrical reactor and a coaxially incorporated vertical tube able to spatially separate acidification from methanogenesis. Food waste presented significant methane generation performance under mesophilic conditions. Relatively high amounts of H2S released during process evolution did not have a significant effect on biogas production. For psychrophilic two-stage AD, H2S generated during start-up provoked reactor's instability only for a few days. The system was stable and operated at steady-state conditions over the course of the main AD. Higher amount of biogas was produced by the two-stage psychrophilic reactor (0.800 m3 kgVS-1) than the mesophilic single-stage system (0.751 m3 kgVS-1). However, the average methane quantities generated by the two systems were remarkably similar (0.444 and 0.440 m3 kgVS-1). Psychrophilic process was more efficient in utilizing higher proportions of volatile organics contained in substrate for methane generation than mesophilic operation. The low-temperature two-stage reactor was more energy-efficient than the mesophilic CSTR for digestion of food waste. Two-stage anaerobic digestion system operating under psychrophilic conditions might be an economically feasible option for efficiently digesting food waste.
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Affiliation(s)
- Jiří Rusín
- Institute of Environmental Technology, VSB - Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba 708 00, Czech Republic
| | - Kateřina Chamrádová
- Institute of Environmental Technology, VSB - Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba 708 00, Czech Republic.
| | - Panagiotis Basinas
- Institute of Environmental Technology, VSB - Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba 708 00, Czech Republic
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Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp with Cow Manure to Boost the Performance of the Process: The Effect of Manure Proportion. WATER 2020. [DOI: 10.3390/w13010067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Sugar beet by-products are a lignocellulosic waste generated from sugar beet industry during the sugar production process and stand out for their high carbon content. Moreover, cow manure (CM) is hugely produced in rural areas and livestock industry, which requires proper disposal. Anaerobic digestion of such organic wastes has shown to be a suitable technology for these wastes valorization and bioenergy production. In this context, the biomethane production from the anaerobic co-digestion of exhausted sugar beet pulp (ESBP) and CM was investigated in this study. Four mixtures (0:100, 50:50, 75:25, and 90:10) of cow manure and sugar beet by-products were evaluated for methane generation by thermophilic batch anaerobic co-digestion assays. The results showed the highest methane production was observed in mixtures with 75% of CM (159.5 mL CH4/g VolatileSolids added). Nevertheless, the hydrolysis was inhibited by volatile fatty acids accumulation in the 0:100 mixture, which refers to the assay without CM addition. The modified Gompertz model was used to fit the experimental results of methane productions and the results of the modeling show a good fit between the estimated and the observed data.
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8
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Letelier-Gordo CO, Mancini E, Pedersen PB, Angelidaki I, Fotidis IA. Saline fish wastewater in biogas plants - Biomethanation toxicity and safe use. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 275:111233. [PMID: 32827897 DOI: 10.1016/j.jenvman.2020.111233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/29/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Increasing marine land-based recirculating aquaculture systems (RAS) and stricter environmental regulations, pose new challenges to the aquaculture industry on how to treat and dispose saline fish wastewater. The fish wastewater could be incorporated into biogas reactors, but currently, the effects of salinity on the biomethanation process are poorly known. This study aimed to assess the toxicity of fish wastewater with different salinities on the biomethanation process and to propose optimum co-digestion scenarios for maximal methane potential and safe use in biogas plants. Results showed that, depending on salinity and organic content, it is possible to efficiently co-digest from 3.22 to 61.85% fish wastewater (v/v, wastewater/manure) and improve the maximum methane production rate from 2.72 to 61.85%, respectively compared to cow manure mono-digestion. Additionally, salinity was identified as the main inhibitor of biomethanation process with a half-maximal inhibitory concentration (IC50) of 4.37 g L-1, while sulphate reduction was identified as a secondary inhibitor.
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Affiliation(s)
- Carlos O Letelier-Gordo
- National Institute of Aquatic Resources, Section for Aquaculture, North Sea Research Centre, Technical University of Denmark, DK-9850, Hirtshals, Denmark
| | - Enrico Mancini
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet Bygning 115, DK-2800, Kgs. Lyngby, Denmark
| | - Per Bovbjerg Pedersen
- National Institute of Aquatic Resources, Section for Aquaculture, North Sea Research Centre, Technical University of Denmark, DK-9850, Hirtshals, Denmark
| | - Irini Angelidaki
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet Bygning 115, DK-2800, Kgs. Lyngby, Denmark
| | - Ioannis A Fotidis
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet Bygning 115, DK-2800, Kgs. Lyngby, Denmark; School of Civil Engineering Southeast University Nanjing, 210096, China.
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9
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Rubio JA, Romero LI, Wilkie AC, García-Morales JL. Mesophilic Anaerobic Co-digestion of Olive-Mill Waste With Cattle Manure: Effects of Mixture Ratio. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2019. [DOI: 10.3389/fsufs.2019.00009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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10
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Spence A, Blanco Madrigal E, Patil R, Bajón Fernández Y. Evaluation of anaerobic digestibility of energy crops and agricultural by-products. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2018.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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De Vrieze J, Arends JBA, Verbeeck K, Gildemyn S, Rabaey K. Interfacing anaerobic digestion with (bio)electrochemical systems: Potentials and challenges. WATER RESEARCH 2018; 146:244-255. [PMID: 30273809 DOI: 10.1016/j.watres.2018.08.045] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/14/2018] [Accepted: 08/17/2018] [Indexed: 06/08/2023]
Abstract
For over a century, anaerobic digestion has been a key technology in stabilizing organic waste streams, while at the same time enabling the recovery of energy. The anticipated transition to a bio-based economy will only increase the quantity and diversity of organic waste streams to be treated, and, at the same time, increase the demand for additional and effective resource recovery schemes for nutrients and organic matter. The performance of anaerobic digestion can be supported and enhanced by (bio)electrochemical systems in a wide variety of hybrid technologies. Here, the possible benefits of combining anaerobic digestion with (bio)electrochemical systems were reviewed in terms of (1) process monitoring, control, and stabilization, (2) nutrient recovery, (3) effluent polishing, and (4) biogas upgrading. The interaction between microorganisms and electrodes with respect to niche creation is discussed, and the potential impact of this interaction on process performance is evaluated. The strength of combining anaerobic digestion with (bio)electrochemical technologies resides in the complementary character of both technologies, and this perspective was used to distinguish transient trends from schemes with potential for full-scale application. This is supported by an operational costs assessment, showing that the economic potential of combining anaerobic digestion with a (bio)electrochemical system is highly case-specific, and strongly depends on engineering challenges with respect to full-scale applications.
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Affiliation(s)
- Jo De Vrieze
- Center for Microbial Ecology & Technology (CMET), Ghent University, Coupure Links 653, B-9000, Gent, Belgium
| | - Jan B A Arends
- Center for Microbial Ecology & Technology (CMET), Ghent University, Coupure Links 653, B-9000, Gent, Belgium
| | - Kristof Verbeeck
- Center for Microbial Ecology & Technology (CMET), Ghent University, Coupure Links 653, B-9000, Gent, Belgium
| | - Sylvia Gildemyn
- Center for Microbial Ecology & Technology (CMET), Ghent University, Coupure Links 653, B-9000, Gent, Belgium; OWS nv, Dok Noord 5, 9000, Gent, Belgium
| | - Korneel Rabaey
- Center for Microbial Ecology & Technology (CMET), Ghent University, Coupure Links 653, B-9000, Gent, Belgium.
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Negral L, Castrillón L, Marañón E, Fernández-Nava Y, Ormaechea P. Inverted phase fermentation as a pretreatment for anaerobic digestion of cattle manure and sewage sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 203:741-744. [PMID: 27589921 DOI: 10.1016/j.jenvman.2016.08.035] [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: 12/09/2015] [Revised: 06/22/2016] [Accepted: 08/10/2016] [Indexed: 06/06/2023]
Abstract
The aim of this research study was to analyse the effect of applying inverted phase fermentation (IPF) prior to the anaerobic digestion of cattle manure and sewage sludge. IPF promotes the endogenous bacteria present in waste and hence enzymatic hydrolysis, producing a solid-liquid separation. The clarified bottom layer or liquid phase (LP, 70% volume in manure and 65% in sludge), and the thickened top layer or solid phase (SP, 30% volume in manure and 35% in sludge) were digested separately. Operating at 37 °C, the time needed to digest the LP from manure was shorter (10 days) than that needed to digest the corresponding SP or the untreated substrate (22 days in both cases). The time needed to digest the separated phases of sludge (LP: 2 days, SP: 15 days) was lower than that needed to digest manure. Biogas production rates for the manure after pretreatment were 0.5 L/L·day for the SP and 0.7 L/L·day for the LP, allowing higher OLR (4.5-4.8 gCOD/L·day) than when digesting untreated manure and increasing biogas production by 17%. IPF applied to sewage sludge led to a production of 1.8 L/L·day at an OLR of 6.2 gCOD/L·day for the SP and 2.0 L/L·day at 12.9 gCOD/L·day for the LP. Assuming a conventional OLR of 2-3 gCOD/L·day, the advantage of applying IPF to sewage sludge resides in the possibility of operating digesters at much higher OLR.
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Affiliation(s)
- L Negral
- Department of Chemical and Environmental Engineering, University Institute of Industrial Technology of Asturias, University of Oviedo, Gijón Campus, 33203, Gijón, Spain
| | - L Castrillón
- Department of Chemical and Environmental Engineering, University Institute of Industrial Technology of Asturias, University of Oviedo, Gijón Campus, 33203, Gijón, Spain
| | - E Marañón
- Department of Chemical and Environmental Engineering, University Institute of Industrial Technology of Asturias, University of Oviedo, Gijón Campus, 33203, Gijón, Spain.
| | - Y Fernández-Nava
- Department of Chemical and Environmental Engineering, University Institute of Industrial Technology of Asturias, University of Oviedo, Gijón Campus, 33203, Gijón, Spain
| | - P Ormaechea
- Department of Chemical and Environmental Engineering, University Institute of Industrial Technology of Asturias, University of Oviedo, Gijón Campus, 33203, Gijón, Spain
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Kumanowska E, Uruñuela Saldaña M, Zielonka S, Oechsner H. Two-stage anaerobic digestion of sugar beet silage: The effect of the pH-value on process parameters and process efficiency. BIORESOURCE TECHNOLOGY 2017; 245:876-883. [PMID: 28926921 DOI: 10.1016/j.biortech.2017.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 06/07/2023]
Abstract
The study investigated the influence of the target pH-values 4.5, 5, 5.5 and 6 in the acidification reactor on process parameters, such as substrate-specific methane yield and the intermediates, in the two-stage anaerobic digestion of sugar beet silage. The total specific methane yield (Nlkg-1CODd-1) increased with an increase in the pH (pH 4.5: 140.58±70.08, pH 5: 181.21±55.71, pH 5.5: 218.32±51.01, pH 6: 256.47±28.78). The pH-value also had an effect on the dominant intermediate in hydrolysate. At the pH-value of 4.5, almost no acidification and microbial activity was observed. At pH 5 and 5.5, butyric acid production dominated, guided by H2 production. At pH 6 acetic acid was the main product. The absence of H2 and the highest SMY makes it favorable under practical aspects.
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Affiliation(s)
- Elzbieta Kumanowska
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstraße 9, Stuttgart 70599, Germany.
| | - Mariana Uruñuela Saldaña
- University of Stuttgart, Institute of Sanitary Engineering, Water Quality and Solid Waste Management, Bandtäle 2, Stuttgart 70569, Germany
| | - Simon Zielonka
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstraße 9, Stuttgart 70599, Germany
| | - Hans Oechsner
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstraße 9, Stuttgart 70599, Germany
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Doloman A, Varghese H, Miller CD, Flann NS. Modeling de novo granulation of anaerobic sludge. BMC SYSTEMS BIOLOGY 2017; 11:69. [PMID: 28716030 PMCID: PMC5514506 DOI: 10.1186/s12918-017-0443-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 06/30/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND A unique combination of mechanical, physiochemical and biological forces influences granulation during processes of anaerobic digestion. Understanding this process requires a systems biology approach due to the need to consider not just single-cell metabolic processes, but also the multicellular organization and development of the granule. RESULTS In this computational experiment, we address the role that physiochemical and biological processes play in granulation and provide a literature-validated working model of anaerobic granule de novo formation. The agent-based model developed in a cDynoMiCs simulation environment successfully demonstrated a de novo granulation in a glucose fed system, with the average specific methanogenic activity of 1.11 ml C H 4/g biomass and formation of a 0.5 mm mature granule in 33 days. The simulated granules exhibit experimental observations of radial stratification: a central dead core surrounded by methanogens then encased in acidogens. Practical application of the granulation model was assessed on the anaerobic digestion of low-strength wastewater by measuring the changes in methane yield as experimental configuration parameters were systematically searched. CONCLUSIONS In the model, the emergence of multicellular organization of anaerobic granules from randomly mixed population of methanogens and acidogens was observed and validated. The model of anaerobic de novo granulation can be used to predict the morphology of the anaerobic granules in a alternative substrates of interest and to estimate methane potential of the resulting microbial consortia. The study demonstrates a successful integration of a systems biology approach to model multicellular systems with the engineering of an efficient anaerobic digestion system.
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Affiliation(s)
- Anna Doloman
- Department of Biological Engineering, Utah State University, Old Main Hill 4105, Logan, 84322-4105, UT, USA
| | - Honey Varghese
- Department of Computer Science, Utah State University, Old Main Hill 420, Logan, 84322-4205, UT, USA
| | - Charles D Miller
- Department of Biological Engineering, Utah State University, Old Main Hill 4105, Logan, 84322-4105, UT, USA
| | - Nicholas S Flann
- Department of Computer Science, Utah State University, Old Main Hill 420, Logan, 84322-4205, UT, USA.
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15
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Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Influence of total solids concentration on the anaerobic co-digestion of sugar beet by-products and livestock manures. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:438-445. [PMID: 28196757 DOI: 10.1016/j.scitotenv.2017.01.178] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 01/25/2017] [Accepted: 01/26/2017] [Indexed: 06/06/2023]
Abstract
A series of batch anaerobic digestion assays were implemented to determine the influence of total solids concentration on the anaerobic digestion of sugar beet by-products and their co-digestion with two kind of livestock manures (pig and cow manures). The two total solid concentrations studied were 8% and 5%. Total solids contents above 8% were not evaluated because of the inappropriate rheological behaviour of sugar beet by-products at these concentrations. The best total solid content tested corresponded to 8%, achieving specific methane yields of 464.3 and 451.4mL/g VSadded for co-digestion with pig manure and cow manure respectively. These data were 1.5 times higher than that obtained for reactors operating with 5% total solids content. For individual digestion of sugar beet by-products, final methane yields operating at 8% were also higher than those measured at 5% total solids concentration. However, in these tests, a large delay in the start of biogas production was registered due to the inhibition caused by the accumulation of volatile fatty acids. No significant differences in the organic matter removal efficiencies were observed for the two total solids contents studied.
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Affiliation(s)
- K Aboudi
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
| | - C J Álvarez-Gallego
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| | - L I Romero-García
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
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16
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Three-stage anaerobic co-digestion of food waste and horse manure. Sci Rep 2017; 7:1269. [PMID: 28455509 PMCID: PMC5430929 DOI: 10.1038/s41598-017-01408-w] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 03/28/2017] [Indexed: 11/09/2022] Open
Abstract
A novel compact three-stage anaerobic digester (HM3) was developed to combine the advantages of high solids anaerobic digestion (AD) and wet AD for co-digestion of food waste and horse manure. By having three separate chambers in the three-stage anaerobic digester, three different functional zones were created for high-solids hydrolysis, acidogenesis and wet methanogenesis. The results showed that the functionalized partitioning in HM3 significantly accelerated the solubilization of solid organic matters and the formation of volatile fatty acids, resulting in an increase of 11~23% in methane yield. VS reduction in the HM3 presents the highest rate of 71% compared to the controls. Pyrosequencing analysis indicated that different microbial communities in terms of hydrolyzing bacteria, acidogenic bacteria and methanogenic archaea were selectively enriched in the three separate chambers of the HM3. Moreover, the abundance of the methanogenic archaea was increased by 0.8~1.28 times compared to controls.
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17
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Lima DMF, Rodrigues JAD, Boe K, Alvarado-Morales M, Ellegaard L, Angelidaki I. ANAEROBIC MODELING FOR IMPROVING SYNERGY AND ROBUSTNESS OF A MANURE CO-DIGESTION PROCESS. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2016. [DOI: 10.1590/0104-6632.20160334s20150314] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - K. Boe
- Technical University of Denmark, Denmark
| | | | - L. Ellegaard
- Burmeister & Wain Scandinavian Contractor A/S, Denmark
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18
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Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Evaluation of methane generation and process stability from anaerobic co-digestion of sugar beet by-product and cow manure. J Biosci Bioeng 2016; 121:566-72. [DOI: 10.1016/j.jbiosc.2015.10.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/18/2015] [Accepted: 10/05/2015] [Indexed: 11/28/2022]
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19
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Enrichment of Methanosaetaceae on carbon felt and biochar during anaerobic digestion of a potassium-rich molasses stream. Appl Microbiol Biotechnol 2016; 100:5177-87. [DOI: 10.1007/s00253-016-7503-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 01/30/2023]
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20
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Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Biomethanization of sugar beet byproduct by semi-continuous single digestion and co-digestion with cow manure. BIORESOURCE TECHNOLOGY 2016; 200:311-319. [PMID: 26512853 DOI: 10.1016/j.biortech.2015.10.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/06/2015] [Accepted: 10/07/2015] [Indexed: 06/05/2023]
Abstract
Dried pellet of exhausted sugar beet cossettes were digested alone and combined with cow manure as co-substrate in a mesophilic semi-continuous anaerobic system. In single digestion assay, the stable biogas production and stable reactor operation was observed at the hydraulic retention time (HRT) of 20days (OLR: 3.26gVS/Lreactord) which was the minimum HRT tolerated by the system. However, co-digestion with cow manure allowed to decrease the HRT until 15days (OLR: 4.97gVS/Lreactord) with 32% higher biogas generation and efficient reactor operation. Propionic acid was the predominant VFA observed during single digestion assay failure, while acetic acid accumulation was observed in the co-digestion assay. In both single and co-digestion assays, the recovery of digesters was possible by ceasing the feeding and re-inoculation with a well-adapted inoculum.
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Affiliation(s)
- Kaoutar Aboudi
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
| | - Carlos José Álvarez-Gallego
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| | - Luis Isidoro Romero-García
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
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21
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Zhou S, Zhang J, Zou G, Riya S, Hosomi M. Mass and Energy Balances of Dry Thermophilic Anaerobic Digestion Treating Swine Manure Mixed with Rice Straw. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2015; 2015:895015. [PMID: 26609436 PMCID: PMC4644824 DOI: 10.1155/2015/895015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 10/03/2015] [Accepted: 10/12/2015] [Indexed: 11/18/2022]
Abstract
To evaluate the feasibility of swine manure treatment by a proposed Dry Thermophilic Anaerobic Digestion (DT-AD) system, we evaluated the methane yield of swine manure treated using a DT-AD method with rice straw under different C/N ratios and solid retention time (SRT) and calculated the mass and energy balances when the DT-AD system is used for swine manure treatment from a model farm with 1000 pigs and the digested residue is used for forage rice production. A traditional swine manure treatment Oxidation Ditch system was used as the study control. The results suggest that methane yield using the proposed DT-AD system increased with a higher C/N ratio and shorter SRT. Correspondently, for the DT-AD system running with SRT of 80 days, the net energy yields for all treatments were negative, due to low biogas production and high heat loss of digestion tank. However, the biogas yield increased when the SRT was shortened to 40 days, and the generated energy was greater than consumed energy when C/N ratio was 20 : 1 and 30 : 1. The results suggest that with the correct optimization of C/N ratio and SRT, the proposed DT-AD system, followed by using digestate for forage rice production, can attain energy self-sufficiency.
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Affiliation(s)
- Sheng Zhou
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Jining Zhang
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Guoyan Zou
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
- Shanghai Co-Elite Agricultural Sci-Tech (Group) Co., Ltd., Shanghai 201403, China
| | - Shohei Riya
- Institute of Engineering, Tokyo University of Agriculture & Technology, Tokyo 184-8588, Japan
| | - Masaaki Hosomi
- Institute of Engineering, Tokyo University of Agriculture & Technology, Tokyo 184-8588, Japan
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22
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Borowski S, Kucner M. Co-digestion of sewage sludge and dewatered residues from enzymatic hydrolysis of sugar beet pulp. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2015; 65:1354-1364. [PMID: 26378477 DOI: 10.1080/10962247.2015.1093564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
UNLABELLED Sugar beet pulp residues (SBPR) from hydrolysis and dewatering of beet pulp were co-digested with municipal sewage sludge (MSS). The highest biogas yields of nearly 512 dm(3)/kg VSfed (volatile solids fed) were achieved for SBPR, treated both as the monosubstrate and as a mixture with MSS (1 : 1 by weight). Simultaneously, the highest methane production of 348 dm(3) CH4/kg VSfed was determined when the sewage sludge was co-digested with 35% SBPR. The analysis of digestate showed that neither ammonia nor volatile fatty acids destabilized the biogas production. IMPLICATIONS Processing of sugar beet pulp into bioethanol via enzymatic hydrolysis and microbial fermentation has become increasingly attractive. However, in this process, only the liquid fraction derived from hydrolysis is subjected into alcoholic fermentation, whereas the remaining solid fraction needs to be utilized. This study demonstrated that sugar beet pulp residues after bioethanol production can successfully be co-digested with sewage sludge to increase biogas productivity of anaerobic digesters located at wastewater treatment plants.
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Affiliation(s)
- Sebastian Borowski
- a Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Łódź , Poland
| | - Marcin Kucner
- a Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Łódź , Poland
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23
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Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Semi-continuous anaerobic co-digestion of sugar beet byproduct and pig manure: Effect of the organic loading rate (OLR) on process performance. BIORESOURCE TECHNOLOGY 2015. [PMID: 26210141 DOI: 10.1016/j.biortech.2015.07.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Anaerobic co-digestion of dried pellet of exhausted sugar beet cossettes (ESBC-DP) with pig manure (PM) was investigated in a semi-continuous stirred tank reactor (SSTR) under mesophilic conditions. Seven hydraulic retention times (HRT) from 20 to 5 days were tested with the aim to evaluate the methane productivities and volatile solids (VS) removal. The corresponding organic loading rates (OLR) ranged from 4.2 to 12.8 gVS/L(reactor) d. The findings revealed that highest system efficiency was achieved at an OLR of 11.2 gVS/L(reactor) d (6 days-HRT) with a methane production rate (MPR) and volatile solids (VS) reduction of 2.91 LCH4/L(reactor) d and 57.5%, respectively. The HRT of 5 days was found critical for the studied process, which leads to volatile fatty acids (VFA) accumulation and sharp drop in pH. However, the increase of HRT permits the recovery of system.
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Affiliation(s)
- Kaoutar Aboudi
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
| | - Carlos José Álvarez-Gallego
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| | - Luis Isidoro Romero-García
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
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24
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Moraes BS, Triolo JM, Lecona VP, Zaiat M, Sommer SG. Biogas production within the bioethanol production chain: Use of co-substrates for anaerobic digestion of sugar beet vinasse. BIORESOURCE TECHNOLOGY 2015; 190:227-234. [PMID: 25958146 DOI: 10.1016/j.biortech.2015.04.089] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 06/04/2023]
Abstract
Bioethanol production generates large amounts of vinasse, which is suitable for biogas production. In this study, the anaerobic digestion of sugar beet vinasse was optimised using continuous stirred-tank reactors (CSTR) supplemented either with lime fertiliser or with 3% cow manure. In both reactors, the C/N ratio was adjusted by adding straw. The biochemical methane potential (BMP) of vinasse was 267.4±4.5LCH4kgVS(-1). Due to the low content of macro- and micronutrients and low C/N ratio of vinasse, biogas production failed when vinasse alone was fed to the reactor. When co-substrate was added, biogas production achieved very close to the BMP of vinasse, being 235.7±32.2LCH4kgVS(-1) from the fertiliser supplied reactor and 265.2±26.8LCH4kgVS(-1) in manure supplied reactor at steady state. Anaerobic digestion was the most stable when cow manure was supplied to digestion of vinasse.
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Affiliation(s)
- B S Moraes
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Center for Research in Energy and Materials (CNPEM), Rua Giuseppe Máximo Scolfaro, 10000, Polo II de Alta Tecnologia, P.O. Box 6170, Campinas, São Paulo 13083 - 970, Brazil.
| | - J M Triolo
- Department of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - V P Lecona
- Department of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - M Zaiat
- Biological Processes Laboratory (LPB), Center for Research, Development and Innovation in Environmental Engineering (CPDI-EA), São Carlos Engineering School (EESC), University of São Paulo (USP), Av. João Dagnone, 1100, Santa Angelina, São Carlos, São Paulo 13563 - 120, Brazil
| | - S G Sommer
- Department of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
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25
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Borowski S, Kubacki P. Co-digestion of pig slaughterhouse waste with sewage sludge. WASTE MANAGEMENT (NEW YORK, N.Y.) 2015; 40:119-126. [PMID: 25840737 DOI: 10.1016/j.wasman.2015.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/04/2015] [Accepted: 03/14/2015] [Indexed: 06/04/2023]
Abstract
Slaughterhouse wastes (SHW) are potentially very attractive substrates for biogas production. However, mono-digestion of these wastes creates great technological problems associated with the inhibitory effects of ammonia and fatty acids on methanogens as well as with the foaming in the digesters. In the following study, the co-digestion of slaughterhouse wastes with sewage sludge (SS) was undertaken. Batch and semi-continuous experiments were performed at 35°C with municipal sewage sludge and pig SHW composed of meat tissue, intestines, bristles and post-flotation sludge. In batch assays, meat tissue and intestinal wastes gave the highest methane productions of 976 and 826 dm(3)/kg VS, respectively, whereas the methane yield from the sludge was only 370 dm(3)/kg VS. The co-digestion of sewage sludge with 50% SHW (weight basis) provided the methane yield exceeding 600 dm(3)/kg VS, which was more than twice as high as the methane production from sewage sludge alone. However, when the loading rate exceeded 4 kg VS/m(3) d, a slight inhibition of methanogenesis was observed, without affecting the digester stability. The experiments showed that the co-digestion of sewage sludge with large amount of slaughterhouse wastes is feasible, and the enhanced methane production does not affect the digester stability.
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Affiliation(s)
- Sebastian Borowski
- Lodz University of Technology, Institute of Fermentation Technology and Microbiology, Wólczańska 171/173, 90-924 Łódź, Poland.
| | - Przemysław Kubacki
- Lodz University of Technology, Faculty of Process and Environmental Engineering, Wólczańska 213, 90-924 Łódź, Poland.
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26
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Fotidis IA, Wang H, Fiedel NR, Luo G, Karakashev DB, Angelidaki I. Bioaugmentation as a solution to increase methane production from an ammonia-rich substrate. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:7669-76. [PMID: 24873631 DOI: 10.1021/es5017075] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Ammonia-rich substrates inhibit the anaerobic digestion (AD) process and constitute the main reason for low energy recovery in full-scale reactors. It is estimated that many full-scale AD reactors are operating in ammonia induced "inhibited steady-state" with significant losses of the potential biogas production yield. To date there are not any reliable methods to alleviate the ammonia toxicity effect or to efficiently digest ammonia-rich waste. In the current study, bioaugmentation as a possible method to alleviate ammonia toxicity effect in a mesophilic continuously stirred-tank reactor (CSTR) operating under "inhibited steady state" was tested. A fast growing hydrogenotrophic methanogen (i.e., Methanoculleus bourgensis MS2(T)) was bioaugmented in the CSTR reactor at high ammonia levels (5 g NH4(+)-N L(-1)). A second CSTR reactor was used as control with no bioaugmentation. The results derived from this study clearly demonstrated a 31.3% increase in methane production yield in the CSTR reactor, at steady-state, after bioaugmentation. Additionally, high-throughput 16S rRNA gene sequencing analysis showed a 5-fold increase in relative abundance of Methanoculleus spp. after bioaugmentation. On the contrary to all methods used today to alleviate ammonia toxicity effect, the tested bioaugmentation process performed without interrupting the continuous operation of the reactor and without replacing the ammonia-rich feedstock.
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Affiliation(s)
- Ioannis A Fotidis
- Department of Environmental Engineering, Technical University of Denmark , Building 113, DK-2800 Kgs. Lyngby, Denmark
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27
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Serrano A, Siles JA, Chica AF, Martin MA. Improvement of mesophilic anaerobic co-digestion of agri-food waste by addition of glycerol. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2014; 140:76-82. [PMID: 24726968 DOI: 10.1016/j.jenvman.2014.02.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 02/17/2014] [Accepted: 02/21/2014] [Indexed: 06/03/2023]
Abstract
Anaerobic co-digestion is a promising alternative to manage agri-food waste rather than landfilling, composting or incineration. But improvement of methane yield and biodegradability is often required to optimize its economic viability. Biomethanization of agri-food solid waste presents the disadvantage of a slow hydrolytic phase, which might be enhanced by adding a readily digestible substrate such as glycerol. In this study, strawberry extrudate, fish waste and crude glycerol derived from biodiesel manufacturing are mixed at a proportion of 54:5:41, in VS (VS, total volatile solids), respectively. The mesophilic anaerobic co-digestion at lab-scale of the mixture was stable at loads lower than 1.85 g VS/L, reaching a methane yield coefficient of 308 L CH4/kg VS (0 °C, 1 atm) and a biodegradability of 96.7%, in VS. Moreover, the treatment capacity of strawberry and fish waste was increased 16% at adding the crude glycerol. An economic assessment was also carried out in order to evaluate the applicability of the proposed process. Even in a pessimistic scenario, the net balance was found to be positive. The glycerol adding implied a net saving in a range from 25.5 to 42.1 €/t if compared to landfill disposal.
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Affiliation(s)
- Antonio Serrano
- Department of Inorganic Chemistry and Chemical Engineering, University of Cordoba, Campus Universitario de Rabanales, Edificio Marie Curie (C-3), Ctra. N-IV, km 396, 14071 Cordoba, Spain
| | - Jose A Siles
- Department of Inorganic Chemistry and Chemical Engineering, University of Cordoba, Campus Universitario de Rabanales, Edificio Marie Curie (C-3), Ctra. N-IV, km 396, 14071 Cordoba, Spain
| | - Arturo F Chica
- Department of Inorganic Chemistry and Chemical Engineering, University of Cordoba, Campus Universitario de Rabanales, Edificio Marie Curie (C-3), Ctra. N-IV, km 396, 14071 Cordoba, Spain
| | - M Angeles Martin
- Department of Inorganic Chemistry and Chemical Engineering, University of Cordoba, Campus Universitario de Rabanales, Edificio Marie Curie (C-3), Ctra. N-IV, km 396, 14071 Cordoba, Spain.
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28
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Belhadj S, Joute Y, El Bari H, Serrano A, Gil A, Siles JÁ, Chica AF, Martín MÁ. Evaluation of the Anaerobic Co-Digestion of Sewage Sludge and Tomato Waste at Mesophilic Temperature. Appl Biochem Biotechnol 2014; 172:3862-74. [DOI: 10.1007/s12010-014-0790-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
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29
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Martín MA, Fernández R, Serrano A, Siles JA. Semi-continuous anaerobic co-digestion of orange peel waste and residual glycerol derived from biodiesel manufacturing. WASTE MANAGEMENT (NEW YORK, N.Y.) 2013; 33:1633-1639. [PMID: 23680268 DOI: 10.1016/j.wasman.2013.03.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 03/08/2013] [Accepted: 03/29/2013] [Indexed: 06/02/2023]
Abstract
The manufacturing of orange juice generates high volumes of orange peel waste which should not be deposited in landfill according to current recommendations. Furthermore, glycerol is a compound co-generated in biodiesel manufacturing, but the volume generated is higher than the current demand for pure glycerol. The anaerobic co-digestion of orange peel waste with residual glycerol could reduce the inhibitory effect of some compounds and provide a correct nutrient balance. Under mesophilic temperature and semi-continuous conditions, a mixture of orange peel waste-residual glycerol of 1:1 (in COD) operated favorably for organic loads up to 2.10 g VS/L. At higher organic loads, the accumulation of volatile fatty acids (VFA) and a decrease in the pH caused process destabilization. The methane yield coefficient was quite constant, with a mean value of 330±51 mL(STP)/g VSadded, while the organic loading rate (OLR) reached a mean value of 1.91±0.37 kgVS/m3 d (17.59±2.78 kgmixture/m3 d) and the hydraulic retention time (HRT) varied in a range of 8.5-30.0 d.
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Affiliation(s)
- M A Martín
- Inorganic Chemistry and Chemical Engineering Department, University of Cordoba, Spain
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30
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Guo X, Zeng L, Jin X. Advanced regeneration and fixed-bed study of ammonium and potassium removal from anaerobic digested wastewater by natural zeolite. J Environ Sci (China) 2013; 25:954-961. [PMID: 24218825 DOI: 10.1016/s1001-0742(12)60115-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Highly efficient regeneration of natural zeolite was developed in conjunction with the removal of high concentrations of ammonia and potassium from the reverse osmosis effluent of anaerobic-digested wastewater by fixed-bed ion exchange. The elution and uptake behavior of ammonium and potassium in the fixed bed were studied. Both batch desorption tests and on-column regeneration were conducted to develop an optimum regeneration condition compatible with the wastewater requirements. The effectiveness of ammonium elution increased with increasing alkaline concentration. The increase of salt dose significantly enhanced the ammonium maximum in the elution solution. Complete ammonium elution was achieved in 6 bed volumes (BV) when the alkaline and salt concentrations were respectively 0.1 mol/L and 18.6 g/L at a flow rate of 2.5-3.0 BV/hr. Due to the higher affinity of potassium with natural clinoptilolite, complete potassium elution was not achieved in all cases.
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Affiliation(s)
- Xuejun Guo
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
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Guo X, Jin X. Treatment of Anaerobically Digested Cattle Manure Wastewater by Tubular Ultrafiltration Membrane. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2012.725447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Dai X, Duan N, Dong B, Dai L. High-solids anaerobic co-digestion of sewage sludge and food waste in comparison with mono digestions: stability and performance. WASTE MANAGEMENT (NEW YORK, N.Y.) 2013; 33:308-316. [PMID: 23177568 DOI: 10.1016/j.wasman.2012.10.018] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 09/27/2012] [Accepted: 10/21/2012] [Indexed: 05/25/2023]
Abstract
System stability and performance of high-solids anaerobic co-digestion of dewatered sludge (DS) and food waste (FW) in comparison with mono digestions were investigated. System stability was improved in co-digestion systems with co-substrate acting as a diluting agent to toxic chemicals like ammonia or Na(+). For high-solids digestion of DS, the addition of FW not only improved system stability but also greatly enhanced volumetric biogas production. For high-solids digestion of FW, the addition of DS could reduce Na(+) concentration and help maintain satisfactory stability during the conversion of FW into biogas. System performances of co-digestion systems were mainly determined by the mixing ratios of DS and FW. Biogas production and volatile solids (VSs) reduction in digestion of the co-mixture of DS and FW increased linearly with higher ratios of FW. A kinetic model, which aimed to forecast the performance of co-digestion and to assist reactor design, was developed from long-term semi-continuous experiments. Maximum VS reduction for DS and FW was estimated to be 44.3% and 90.3%, respectively, and first order constant k was found to be 0.17d(-1) and 0.50 d(-1), respectively. Experimental data of co-digestion were in good conformity to the predictions of the model.
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Affiliation(s)
- Xiaohu Dai
- National Engineering Research Center for Urban Pollution Control, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
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Castrillón L, Fernández-Nava Y, Ormaechea P, Marañón E. Methane production from cattle manure supplemented with crude glycerin from the biodiesel industry in CSTR and IBR. BIORESOURCE TECHNOLOGY 2013; 127:312-317. [PMID: 23131654 DOI: 10.1016/j.biortech.2012.09.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/17/2012] [Accepted: 09/22/2012] [Indexed: 06/01/2023]
Abstract
The aim of the present research work was to optimise biogas production from cattle manure by adding crude glycerin from the biodiesel industry. For this purpose, 6%v/v crude glycerin (the optimum amount according to previous research) was added to ground manure and the mixture was sonicated to enhance biodegradability prior to anaerobic co-digestion at 55 °C. Two different reactors were used: continuously stirred (CSTR) and induced bed (IBR). The methanol and pure glycerin contents of the crude glycerin used in this study were 5.6% and 49.4% (w/w), respectively. The best results when operating in CSTR were obtained for an organic loading rate (OLR) of 5.4 kg COD/m(3) day, obtaining 53.2m(3) biogas/t wet waste and 80.7% COD removal. When operating in IBR, the best results were obtained for an OLR of 6.44 kg COD/m(3)day, obtaining 89.6% COD removal and a biogas production of 56.5m(3)/t wet waste.
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Affiliation(s)
- L Castrillón
- Chemical Engineering and Environmental Technology Department, University Technology Institute of Asturias, University of Oviedo, Campus of Gijón, 33203 Gijón, Spain.
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Inyang M, Gao B, Yao Y, Xue Y, Zimmerman AR, Pullammanappallil P, Cao X. Removal of heavy metals from aqueous solution by biochars derived from anaerobically digested biomass. BIORESOURCE TECHNOLOGY 2012; 110:50-6. [PMID: 22325901 DOI: 10.1016/j.biortech.2012.01.072] [Citation(s) in RCA: 320] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 01/11/2012] [Accepted: 01/15/2012] [Indexed: 05/24/2023]
Abstract
This study examined the ability of two biochars converted from anaerobically digested biomass to sorb heavy metals using a range of laboratory sorption and characterization experiments. Initial evaluation of DAWC (digested dairy waste biochar) and DWSBC (digested whole sugar beet biochar) showed that both biochars were effective in removing a mixture of four heavy metals (Pb(2 +), Cu(2+), Ni(2+), and Cd(2+)) from aqueous solutions. Compared to DAWC, DWSBC demonstrated a better ability to remove Ni and Cd. Further investigations of lead sorption by the two biochars indicated that the removal was mainly through a surface precipitation mechanism, which was confirmed by batch sorption experiments, mathematical modeling, and examinations of lead-laden biochars samples using SEM-EDS, XRD, and FTIR. The lead sorption capacity of the two biochars was close to or higher than 200mmol/kg, which is comparable to that of commercial activated carbons.
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Affiliation(s)
- Mandu Inyang
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
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Frigon JC, Roy C, Guiot SR. Anaerobic co-digestion of dairy manure with mulched switchgrass for improvement of the methane yield. Bioprocess Biosyst Eng 2011; 35:341-9. [PMID: 21779889 DOI: 10.1007/s00449-011-0572-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 07/03/2011] [Indexed: 11/29/2022]
Abstract
The owners of farm-scale anaerobic digesters are relying on off-farm wastes or energy crops as a co-digestion feedstock with animal manure in order to increase their production of methane and thus revenues. Switchgrass represents an interesting feedstock for Canadian digesters owners as it is a high-yielding low-maintenance perennial crop, well adapted to northern climate. Methane potential assays in batch tests showed methane production of 19.4 ± 3.6, 28.3 ± 1.7, 37.3 ± 7.1 and 45.7 ± 0.8 L kg(-1), for raw manure, blended manure, manure and mulched switchgrass, manure and pretreated switchgrass, respectively. Two 6-L lab-scale anaerobic digesters were operated for 130 days in order to assess the benefit of co-digesting switchgrass with bovine manure (digester #2), at a 20% wet mass fraction, compared with a manure-only operation (digester #1) The digesters were operated at an hydraulic retention time of 37 ± 6 days and at loads of 2.4 ± 0.6 and 2.6 ± 0.6 kg total volatile solids (TVS) L(-1) day(-1) for digesters #1 (D1) and #2 (D2), respectively. The TVS degradation reached 25 and 39%, which resulted in a methane production of 1.18 ± 0.18 and 2.19 ± 0.31 L day(-1) for D1 and D2, respectively. The addition of 20% on a wet mass ratio of switchgrass to a manure digester increased its methane production by 86%. The co-digestion of switchgrass in a 500 m(3) manure digester could yield up to 10.2 GJ day(-1) of purified methane or 1.1 MWh day(-1) of electricity.
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