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Dauptain K, Trably E, Santa-Catalina G, Carrere H. Biomass acid pretreatment impacts on metabolic routes and bacterial composition of dark fermentation process. Waste Manag 2024; 181:211-219. [PMID: 38648723 DOI: 10.1016/j.wasman.2024.03.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/11/2024] [Accepted: 03/28/2024] [Indexed: 04/25/2024]
Abstract
Complex organic matter represents a suitable substrate to produce hydrogen through dark fermentation (DF) process. To increase H2 yields, pretreatment technology is often required. The main objective of the present work was to investigate thermo-acid pretreatment impact on sugar solubilization and biotic parameters of DF of sorghum or organic fraction of municipal solid waste (OFMSW). Biochemical hydrogen potential tests were carried out without inoculum using raw or thermo-acid pretreated substrates. Results showed an improvement in sugar solubilization after thermo-acid pretreatments. Pretreatments led to similar DF performances (H2 and total metabolite production) compared to raw biomasses. Nevertheless, they were responsible for bacterial shifts from Enterobacteriales towards Clostridiales and Bacillales as well as metabolic changes from acetate towards butyrate or ethanol. The metabolic changes were attributed to the biomass pretreatment impact on indigenous bacteria as no change in the metabolic profile was observed after performing thermo-acid pretreatments on irradiated OFMSW (inactivated indigenous bacteria and inoculum addition). Consequently, acid pretreatments were inefficient to improve DF performances but led to metabolic and bacterial community changes due to their impact on indigenous bacteria.
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Affiliation(s)
- K Dauptain
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - E Trably
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - G Santa-Catalina
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - H Carrere
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France.
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2
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Mahieux M, Richard C, Aemig Q, Delgenès JP, Juge M, Trably E, Escudié R. Archaeal community composition as key driver of H2 consumption rates at the start-up of the biomethanation process. Sci Total Environ 2024; 931:172922. [PMID: 38701927 DOI: 10.1016/j.scitotenv.2024.172922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/03/2024] [Accepted: 04/29/2024] [Indexed: 05/05/2024]
Abstract
The performance of hydrogen consumption by various inocula derived from mesophilic anaerobic digestion plants was evaluated under ex situ biomethanation. A panel of 11 mesophilic inocula was operated at a concentration of 15 gVS.L-1 at a temperature of 35 °C in batch system with two successive injections of H2:CO2 (4:1 mol:mol). Hydrogen consumption and methane production rates were monitored from 44 h to 72 h. Hydrogen consumption kinetics varies significantly based on the inoculum origin, with no accumulation of volatile fatty acids. Microbial community analyses revealed that microbial indicators such as the increase in Methanosarcina sp. abundance and the increase of the Archaea/Bacteria ratio were associated to high initial hydrogen consumption rates. The improvement in the hydrogen consumption rate between the two injections was correlated with the enrichment in hydrogenotrophic methanogens. This work provides new insights into the early response of microbial communities to hydrogen injection and on the microbial structures that may favor their adaptation to the biomethanation process.
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Affiliation(s)
- M Mahieux
- INRAE, Univ. Montpellier, LBE, 102 Avenue des étangs, F-11100 Narbonne, France; ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France
| | - C Richard
- ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France
| | - Q Aemig
- ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France
| | - J-P Delgenès
- INRAE, Univ. Montpellier, LBE, 102 Avenue des étangs, F-11100 Narbonne, France
| | - M Juge
- ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France
| | - E Trably
- INRAE, Univ. Montpellier, LBE, 102 Avenue des étangs, F-11100 Narbonne, France
| | - R Escudié
- INRAE, Univ. Montpellier, LBE, 102 Avenue des étangs, F-11100 Narbonne, France.
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3
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Xia A, Herrmann C, Reungsang A, Show PL, Trably E, Wu J. Editorial: Proceedings of ABBS-international conference on biohydrogen and bioprocesses 2022 (ABBS 2022). Front Bioeng Biotechnol 2024; 12:1390377. [PMID: 38655390 PMCID: PMC11035866 DOI: 10.3389/fbioe.2024.1390377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 03/25/2024] [Indexed: 04/26/2024] Open
Affiliation(s)
- Ao Xia
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, China
- Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China
| | - Christiane Herrmann
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Alissara Reungsang
- Research Group for Development of Microbial Hydrogen Production Process from Biomass, Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, Thailand
| | - Pau-Loke Show
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Department of Chemical and Environment Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Eric Trably
- INRAE, Université de Montpellier, LBE, Narbonne, France
| | - Junjun Wu
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, China
- Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China
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Roslan E, Magdalena JA, Mohamed H, Akhiar A, Shamsuddin AH, Carrere H, Trably E. Lactic acid fermentation of food waste as storage method prior to biohydrogen production: Effect of storage temperature on biohydrogen potential and microbial communities. Bioresour Technol 2023; 378:128985. [PMID: 37001698 DOI: 10.1016/j.biortech.2023.128985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
This study aims to investigate the impact of utilizing lactic acid fermentation (LAF) as storage method of food waste (FW) prior to dark fermentation (DF). LAF of FW was carried out in batches at six temperatures (4 °C, 10 °C, 23 °C, 35 °C, 45 °C, and 55 °C) for 15 days followed by biological hydrogen potential (BHP) tests. Different storage temperatures resulted in different metabolites distribution, with either lactate or ethanol being dominant (159.2 ± 20.6 mM and 234.4 ± 38.2 mM respectively), but no negative impact on BHP (averaging at 94.6 ± 25.1 mL/gVS). Maximum hydrogen production rate for stored FW improved by at least 57%. Microbial analysis showed dominance of lactic acid bacteria (LAB) namely Lactobacillus sp., Lactococcus sp., Weisella sp., Streptococcus sp. and Bacillus sp. after LAF. Clostridium sp. emerged after DF, co-existing with LAB. Coupling LAF as a storage method was demonstrated as a novel strategy of FW management for DF, for a wide range of temperatures.
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Affiliation(s)
- Eqwan Roslan
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France; Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, 43000 Kajang, Selangor, Malaysia.
| | - Jose Antonio Magdalena
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France; Vicerrectorado de Investigación y Transferencia de la Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Hassan Mohamed
- Institute of Sustainable Energy, Universiti Tenaga Nasional, 43000 Kajang, Selangor, Malaysia; Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, 43000 Kajang, Selangor, Malaysia
| | - Afifi Akhiar
- Institute of Sustainable Energy, Universiti Tenaga Nasional, 43000 Kajang, Selangor, Malaysia; Centre of Excellence for Water Research and Environmental Sustainability Growth (WAREG), Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Abd Halim Shamsuddin
- Institute of Sustainable Energy, Universiti Tenaga Nasional, 43000 Kajang, Selangor, Malaysia
| | - Hélène Carrere
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - Eric Trably
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
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5
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Magdalena JA, Pérez-Bernal MF, Bernet N, Trably E. Sequential dark fermentation and microbial electrolysis cells for hydrogen production: Volatile fatty acids influence and energy considerations. Bioresour Technol 2023; 374:128803. [PMID: 36858124 DOI: 10.1016/j.biortech.2023.128803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
Hydrogen production from food waste by coupling dark fermentation (DF) and microbial electrolysis cells (MEC) was studied. Metabolic patterns in DF, their effects on MECs efficiency, and the energy output of the coupling were investigated. Mesophilic temperature and acidic pH 5.5 resulted in 72 ± 20 mL H2/g CODin and a butyrate-enriched profile (C2/C4, 0.5-0.6) contrasting with an acetate-enriched profile (C2/C4, 1.8-1.9) and 36 ± 10 mL H2/g CODin at pH 7. Assessment in series of the DF effluents in MECs resulted in a higher hydrogen yield (566-733 mL H2/g CODin) and volatile fatty acids (VFAs) removal (84-95%) obtained from pH 7 effluents compared to pH 5.5 effluents (173-186 mL H2/g CODin and 29-59%). Finally, the output energy was lower in DF at pH 7, however, these effluents retrieved the highest energy in the MEC, showing the importance of process pH and VFAs profile to balance the coupling.
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Affiliation(s)
- Jose Antonio Magdalena
- LBE, Univ Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France; Vicerrectorado de Investigación y Transferencia de la Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | | | - Nicolas Bernet
- LBE, Univ Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
| | - Eric Trably
- LBE, Univ Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
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Lacroux J, Llamas M, Dauptain K, Avila R, Steyer JP, van Lis R, Trably E. Dark fermentation and microalgae cultivation coupled systems: Outlook and challenges. Sci Total Environ 2023; 865:161136. [PMID: 36587699 DOI: 10.1016/j.scitotenv.2022.161136] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/30/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
The implementation of a sustainable bio-based economy is considered a top priority today. There is no doubt about the necessity to produce renewable bioenergy and bio-sourced chemicals to replace fossil-derived compounds. Under this scenario, strong efforts have been devoted to efficiently use organic waste as feedstock for biohydrogen production via dark fermentation. However, the technoeconomic viability of this process needs to be enhanced by the valorization of the residual streams generated. The use of dark fermentation effluents as low-cost carbon source for microalgae cultivation arises as an innovative approach for bioproducts generation (e.g., biodiesel, bioactive compounds, pigments) that maximizes the carbon recovery. In a biorefinery context, after value-added product extraction, the spent microalgae biomass can be further valorised as feedstock for biohydrogen production. This integrated process would play a key role in the transition towards a circular economy. This review covers recent advances in microalgal cultivation on dark fermentation effluents (DFE). BioH2 via dark fermentation processes and the involved metabolic pathways are detailed with a special focus on the main aspects affecting the effluent composition. Interesting traits of microalgae and current approaches to solve the challenges associated to the integration of dark fermentation and microalgae cultivation are also discussed.
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Affiliation(s)
- Julien Lacroux
- LBE, Univ Montpellier, INRAE, 102 avenue des Etangs, F-11100 Narbonne, France
| | - Mercedes Llamas
- LBE, Univ Montpellier, INRAE, 102 avenue des Etangs, F-11100 Narbonne, France; Instituto de la Grasa (C.S.I.C.), Campus Universidad Pablo de Olavide, Edificio 46., Ctra. de Utrera km. 1, 41013 Sevilla, Spain
| | - Kevin Dauptain
- LBE, Univ Montpellier, INRAE, 102 avenue des Etangs, F-11100 Narbonne, France
| | - Romina Avila
- Chemical, Biological and Environmental Engineering Department, Escola d'Enginyeria, Universitat Autònoma de Barcelona, Bellaterra, Barcelona E-08193, Spain
| | | | - Robert van Lis
- LBE, Univ Montpellier, INRAE, 102 avenue des Etangs, F-11100 Narbonne, France
| | - Eric Trably
- LBE, Univ Montpellier, INRAE, 102 avenue des Etangs, F-11100 Narbonne, France.
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Raketh M, Kongjan P, Trably E, Samahae N, Jariyaboon R. Effect of organic loading rate and effluent recirculation on biogas production of desulfated skim latex serum using up-flow anaerobic sludge blanket reactor. J Environ Manage 2023; 327:116886. [PMID: 36455441 DOI: 10.1016/j.jenvman.2022.116886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/16/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
High sulfate contents in skim latex serum (SLS) can be reduced by rubber wood ash (RWA). Subsequently, the desulfated skim latex serum (DSLS) can be further anaerobically treated more effectively with the accompanying generated biomethane. In this study, DSLS was treated using an up-flow anaerobic sludge blanket (UASB) reactor operated at 10-day HRT and under mesophilic (37 °C) conditions. The effect of organic loading rates (OLR) at 0.89, 1.79 and 3.57 g-COD/L-reactor∙d on DSLS biodegradability was investigated in Phase I-IV using NaHCO3 as an external buffering agent. Maximum methane production yield of 226.35 mL-CH4/g-CODadded corresponding to 403.25 mL-CH4/L reactor·d was achieved at the suitable OLR of 1.79 g-COD/L-reactor∙d. UASB effluent recirculation which was then applied to replace the NaHCO3. It was found that with 53% effluent recirculation similar to an OLR of 2.01 g-COD/L-reactor∙d, an average of 185.70 mL-CH4/g-CODadded corresponding to 371.40 mL/L reactor·d of methane production was reached. The dominant bacteria in UASB reactor were members of Proteobacteria, Bacteroidota, Firmicutes, and Desulfobacterota phyla. Meanwhile, the archaeal community was majorly dominated by the genera Methanosaeta sp. and Methanomethylovorans sp. The study clearly indicates the capabilities of UASB reactor with effluent recirculation to treat DSLS anaerobically.
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Affiliation(s)
- Marisa Raketh
- Energy Technology Program, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand; Bio-Mass Conversion to Energy and Chemicals (Bio-MEC) Research Unit, Faculty of Science and Technology, Prince of Songkla University (PSU), Pattani, 94000, Thailand
| | - Prawit Kongjan
- Department of Science, Faculty of Science and Technology, Prince of Songkla University (PSU), Pattani, 94000, Thailand; Bio-Mass Conversion to Energy and Chemicals (Bio-MEC) Research Unit, Faculty of Science and Technology, Prince of Songkla University (PSU), Pattani, 94000, Thailand
| | - Eric Trably
- INRAE, Univ Montpellier, LBE, Narbonne, France
| | - Nurta Samahae
- Science Program in Chemistry-Biology, Faculty of Science and Technology, Prince of Songkla University (PSU), Pattani, 94000, Thailand
| | - Rattana Jariyaboon
- Department of Science, Faculty of Science and Technology, Prince of Songkla University (PSU), Pattani, 94000, Thailand; Bio-Mass Conversion to Energy and Chemicals (Bio-MEC) Research Unit, Faculty of Science and Technology, Prince of Songkla University (PSU), Pattani, 94000, Thailand.
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8
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Mohd Roslan ME, Magdalena JA, Mohamed H, Akhiar A, Shamsuddin AH, Carrere H, Trably E. Lactic Acid Fermentation of Food Waste as Storage Method Prior to Biohydrogen Production: Effect of Storage Temperature on Biohydrogen Potential and Microbial Communities.. [DOI: 10.2139/ssrn.4377919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Chenebault C, Moscoviz R, Trably E, Escudié R, Percheron B. Lactic acid production from food waste using a microbial consortium: Focus on key parameters for process upscaling and fermentation residues valorization. Bioresour Technol 2022; 354:127230. [PMID: 35483530 DOI: 10.1016/j.biortech.2022.127230] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
In this study, the production of lactic acid from food waste in industrially relevant conditions was investigated. Laboratory assays were first performed in batch conditions to determine the suitable operational parameters for an efficient lactic acid production. The use of compost as inoculum, the regulation of temperature at 35 °C and pH at 5 enhanced the development of Lactobacillus sp. resulting in the production of 70 g/L of lactic acid with a selectivity of 89% over the other carboxylic acids. Those parameters were then applied at pilot scale in successive fed-batch fermentations. The subsequent high concentration (68 g/L), yield (0.38 g/gTS) and selectivity (77%) in lactic acid demonstrated the applicability of the process. To integrate the process into a complete value chain, fermentation residues were then converted into biogas through anaerobic digestion. Lastly, the experiment was successfully replicated using commercial and municipal waste collected in France.
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Affiliation(s)
| | - Roman Moscoviz
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Eric Trably
- LBE, INRAE, Univ Montpellier, 102 Avenue des Etangs, Narbonne F-11100, France
| | - Renaud Escudié
- LBE, INRAE, Univ Montpellier, 102 Avenue des Etangs, Narbonne F-11100, France
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10
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Braga Nan L, Trably E, Santa-Catalina G, Bernet N, Delgenes JP, Escudie R. Microbial community redundance in biomethanation systems lead to faster recovery of methane production rates after starvation. Sci Total Environ 2022; 804:150073. [PMID: 34517312 DOI: 10.1016/j.scitotenv.2021.150073] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/11/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
The Power-to-Gas concept corresponds to the use of the electric energy surplus to produce H2 by water electrolysis, that can be further converted to methane by biomethanation. However, the fluctuant production of renewable energy sources can lead to discontinuous H2 injections into the reactors, that may interfere with the adaptation of the microbial community to high H2 partial pressures. In this study, the response of the microbial community to H2 and organic feed starvation was evaluated in in-situ and ex-situ biomethanation. The fed-batch reactors were fed with acetate or glucose and H2, and one or four weeks of starvation periods were investigated. Methane productivity was mostly affected by the four-week starvation period. However, both in-situ and ex-situ biomethanation reactors recovered their methane production rate after starvation within approximately one-week of normal operation, while the anaerobic digestion (AD) reactors did not recover their performances even after 3 weeks of normal operation. The recovery failure of the AD reactors was probably related to a slow growth of the syntrophic and methanogen microorganisms, that led to a VFA accumulation. On the contrary, the faster recovery of both biomethanation reactors was related to the replacement of Methanoculleus sp. by Methanobacterium sp., restoring the methane production in the in-situ and ex-situ biomethanation reactors. This study has shown that biomethanation processes can respond favourably to the intermittent H2 addition without compromising their CH4 production performance.
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Affiliation(s)
- L Braga Nan
- INRAE, Univ. Montpellier, LBE, 102 AV. des Etangs, 11100 Narbonne, France
| | - E Trably
- INRAE, Univ. Montpellier, LBE, 102 AV. des Etangs, 11100 Narbonne, France
| | - G Santa-Catalina
- INRAE, Univ. Montpellier, LBE, 102 AV. des Etangs, 11100 Narbonne, France
| | - N Bernet
- INRAE, Univ. Montpellier, LBE, 102 AV. des Etangs, 11100 Narbonne, France
| | - J-P Delgenes
- INRAE, Univ. Montpellier, LBE, 102 AV. des Etangs, 11100 Narbonne, France
| | - R Escudie
- INRAE, Univ. Montpellier, LBE, 102 AV. des Etangs, 11100 Narbonne, France.
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11
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Berthomieu R, Pérez-Bernal MF, Santa-Catalina G, Desmond-Le Quéméner E, Bernet N, Trably E. Mechanisms underlying Clostridium pasteurianum's metabolic shift when grown with Geobacter sulfurreducens. Appl Microbiol Biotechnol 2021; 106:865-876. [PMID: 34939136 DOI: 10.1007/s00253-021-11736-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 12/08/2021] [Accepted: 12/11/2021] [Indexed: 10/19/2022]
Abstract
Recently, a study showed that glycerol fermentation by Clostridium pasteurianum could be metabolically redirected when the electroactive bacterium Geobacter sulfurreducens was added in the culture. It was assumed that this metabolic shift of the fermentative species resulted from an interspecies electron transfer. The aim of this study was to find out the mechanisms used for this interaction and how they affect the metabolism of C. pasteurianum. To get insights into the mechanisms involved, several coculture setups and RNA sequencing with differential expression analysis were performed. As a result, a putative interaction model was proposed: G. sulfurreducens produces cobamide molecules that possibly modify C. pasteurianum metabolic pathway at the key enzyme glycerol dehydratase, and affect its vanadium nitrogenase expression. In addition, the results suggested that G. sulfurreducens' electrons could enter C. pasteurianum through its transmembrane flavin-bound polyferredoxin and cellular cytochrome b5-rubredoxin interplay, putatively reinforcing the metabolic shift. Unravelling the mechanisms behind the interaction between fermentative and electroactive bacteria helps to better understand the role of bacterial interactions in fermentation setups. KEY POINTS: • C. pasteurianum-G. sulfurreducens interaction inducing a metabolic shift is mediated • C. pasteurianum's metabolic shift in coculture might be induced by cobamides • Electrons possibly enter C. pasteurianum through a multiflavin polyferredoxin.
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Affiliation(s)
| | | | | | | | | | - Eric Trably
- INRAE, Univ Montpellier, LBE, Narbonne, France.
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12
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Raketh M, Jariyaboon R, Kongjan P, Trably E, Reungsang A, Sripitak B, Chotisuwan S. Sulfate removal using rubber wood ash to enhance biogas production from sulfate-rich wastewater generated from a concentrated latex factory. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108084] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Lacroux J, Seira J, Trably E, Bernet N, Steyer JP, van Lis R. Mixotrophic Growth of Chlorella sorokiniana on Acetate and Butyrate: Interplay Between Substrate, C:N Ratio and pH. Front Microbiol 2021; 12:703614. [PMID: 34276636 PMCID: PMC8283676 DOI: 10.3389/fmicb.2021.703614] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/11/2021] [Indexed: 11/13/2022] Open
Abstract
Microalgae can be cultivated on waste dark fermentation effluents containing volatile fatty acids (VFA) such as acetate or butyrate. These VFA can however inhibit microalgae growth at concentrations above 0.5-1 gC.L-1. This study used the model strain Chlorella sorokiniana to investigate the effects of acetate or butyrate concentration on biomass growth rates and yields alongside C:N:P ratios and pH control. Decreasing undissociated acid levels by raising the initial pH to 8.0 allowed growth without inhibition up to 5 gC.L-1 VFAs. However, VFA concentration strongly affected biomass yields irrespective of pH control or C:N:P ratios. Biomass yields on 1.0 gC.L-1 acetate were around 1.3-1.5 gC.gC -1 but decreased by 26-48% when increasing initial acetate to 2.0 gC.L-1. This was also observed for butyrate with yields decreasing up to 25%. This decrease in yield in suggested to be due to the prevalence of heterotrophic metabolism at high organic acid concentration, which reduced the amount of carbon fixed by autotrophy. Finally, the effects of C:N:P on biomass, lipids and carbohydrates production dynamics were assessed using a mixture of both substrates. In nutrient replete conditions, C. sorokiniana accumulated up to 20.5% carbohydrates and 16.4% lipids while nutrient limitation triggered carbohydrates accumulation up to 45.3%.
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Affiliation(s)
- Julien Lacroux
- Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Université de Montpellier, Narbonne, France
| | - Jordan Seira
- Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Université de Montpellier, Narbonne, France
| | - Eric Trably
- Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Université de Montpellier, Narbonne, France
| | - Nicolas Bernet
- Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Université de Montpellier, Narbonne, France
| | - Jean-Philippe Steyer
- Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Université de Montpellier, Narbonne, France
| | - Robert van Lis
- Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Université de Montpellier, Narbonne, France
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Dauptain K, Schneider A, Noguer M, Fontanille P, Escudie R, Carrere H, Trably E. Impact of microbial inoculum storage on dark fermentative H 2 production. Bioresour Technol 2021; 319:124234. [PMID: 33254457 DOI: 10.1016/j.biortech.2020.124234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/01/2020] [Accepted: 10/03/2020] [Indexed: 06/12/2023]
Abstract
Complex organic substrates represent an important and relevant feedstock for producing hydrogen by Dark Fermentation (DF). Usually, an external microbial inoculum originated from various natural environments is added to seed the DF reactors. However, H2 yields are significantly impacted by the inoculum origin and the storage conditions as microbial community composition can fluctuate. This study aims to determine how the type and time of inoculum storage can impact the DF performances. Biochemical Hydrogen Potential tests were carried out using three substrates (glucose, the organic fraction of municipal solid waste, and food waste), inocula of three different origins, different storage conditions (freezing or freeze-drying) and duration. As a result, H2 production from glucose with the differently stored inocula was significantly impacted (positively or negatively) and was inoculum-origin-dependent. For complex substrates, hydrogen yields with the stored inocula were not statistically different from the fresh inocula, offering the possibility to store an inoculum.
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Affiliation(s)
- K Dauptain
- LBE, Université de Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
| | - A Schneider
- LBE, Université de Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
| | - M Noguer
- LBE, Université de Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
| | - P Fontanille
- Université de Clermont Auvergne, Institut Pascal, TSA 60026, 63178 Aubière, France
| | - R Escudie
- LBE, Université de Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
| | - H Carrere
- LBE, Université de Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France
| | - E Trably
- LBE, Université de Montpellier, INRAE, 102 avenue des Étangs, 11100 Narbonne, France.
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15
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Paillet F, Barrau C, Escudié R, Bernet N, Trably E. Robust operation through effluent recycling for hydrogen production from the organic fraction of municipal solid waste. Bioresour Technol 2021; 319:124196. [PMID: 33038651 DOI: 10.1016/j.biortech.2020.124196] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/25/2020] [Accepted: 09/26/2020] [Indexed: 06/11/2023]
Abstract
The stability of fermentative hydrogen production from the organic fraction of municipal solid waste (OFMSW) was evaluated in this work using a strategy of effluent recycling. Three pretreatment conditions were applied on the recycled effluent: a) no heat shock treatment, b) one initial heat shock treatment (90 °C, 30 min) and c) systematic heat shock treatment at the beginning of each fermentation. When a systematic heat shock was applied, a maximal hydrogen yield of 17.2 ± 3.8 mLH2/gVS was attained. The hydrogen productivity was improved by 331% reaching a stable value of 1.51 ± 0.29 mLH2/gVS/h, after 8 cycles of effluent recycling. This strategy caused a sharp decrease of diversity with stable co-dominance of hydrogen- and lactate-producing bacteria, ie. Clostridiales and Lactobacillales, respectively. For the other conditions, a sharp decrease of the hydrogen yields was observed showing the importance of applying a heat shock treatment for optimal hydrogen production with effluent recycling.
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Affiliation(s)
- Florian Paillet
- TRIFYL, Route de Sieurac, 81300 Labessiere-Candeil, France; INRAE, Univ Montpellier, LBE, 102 avenue des Etangs, 11100 Narbonne, France
| | - Carole Barrau
- TRIFYL, Route de Sieurac, 81300 Labessiere-Candeil, France
| | - Renaud Escudié
- INRAE, Univ Montpellier, LBE, 102 avenue des Etangs, 11100 Narbonne, France
| | - Nicolas Bernet
- INRAE, Univ Montpellier, LBE, 102 avenue des Etangs, 11100 Narbonne, France
| | - Eric Trably
- INRAE, Univ Montpellier, LBE, 102 avenue des Etangs, 11100 Narbonne, France.
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16
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Dauptain K, Trably E, Santa-Catalina G, Bernet N, Carrere H. Role of indigenous bacteria in dark fermentation of organic substrates. Bioresour Technol 2020; 313:123665. [PMID: 32574750 DOI: 10.1016/j.biortech.2020.123665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Hydrogen production by dark fermentation of complex organic substrates, such as biowaste, can naturally take place with indigenous bacteria or by adding an external microbial inoculum issued from various natural environments. This study aims to determine whether indigenous bacteria associated with thermal pretreatment could impact dark fermentation performances. Biochemical hydrogen potential tests were carried out on seven organic substrates. Results showed a strong influence of the indigenous bacteria which are as effective as thermally pretreated exogenous bacteria to produce H2 and metabolites. High abundance in Clostridiales and/or Enterobacteriales was associated with high H2 yield. This study shows that no inoculum nor pretreatment are required to achieve satisfactory dark fermentation performances from organic waste.
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Affiliation(s)
- K Dauptain
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - E Trably
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France.
| | - G Santa-Catalina
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - N Bernet
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
| | - H Carrere
- INRAE, Université de Montpellier, LBE, 102 avenue des Étangs, 11100 Narbonne, France
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17
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Braga Nan L, Trably E, Santa-Catalina G, Bernet N, Delgenès JP, Escudié R. Biomethanation processes: new insights on the effect of a high H 2 partial pressure on microbial communities. Biotechnol Biofuels 2020; 13:141. [PMID: 32793302 PMCID: PMC7419211 DOI: 10.1186/s13068-020-01776-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Biomethanation is a promising solution to upgrade the CH4 content in biogas. This process consists in the injection of H2 into an anaerobic digester, using the capacity of indigenous hydrogenotrophic methanogens for converting the injected H2 and the CO2 generated from the anaerobic digestion process into CH4. However, the injection of H2 could cause process disturbances by impacting the microbial communities of the anaerobic digester. Better understanding on how the indigenous microbial community can adapt to high H2 partial pressures is therefore required. RESULTS Seven microbial inocula issued from industrial bioprocesses treating different types of waste were exposed to a high H2 partial pressure in semi-continuous reactors. After 12 days of operation, even though both CH4 and volatile fatty acids (VFA) were produced as end products, one of them was the main product. Acetate was the most abundant VFA, representing up to 94% of the total VFA production. VFA accumulation strongly anti-correlated with CH4 production according to the source of inoculum. Three clusters of inocula were distinguished: (1) inocula leading to CH4 production, (2) inocula leading to the production of methane and VFA in a low proportion, and (3) inocula leading to the accumulation of mostly VFA, mainly acetate. Interestingly, VFA accumulation was highly correlated to a low proportion of archaea in the inocula, a higher amount of homoacetogens than hydrogenotrophic methanogens and, the absence or the very low abundance in members from the Methanosarcinales order. The best methanogenic performances were obtained when hydrogenotrophic methanogens and Methanosarcina sp. co-dominated all along the operation. CONCLUSIONS New insights on the microbial community response to high H2 partial pressure are provided in this work. H2 injection in semi-continuous reactors showed a significant impact on microbial communities and their associated metabolic patterns. Hydrogenotrophic methanogens, Methanobacterium sp. or Methanoculleus sp. were highly selected in the reactors, but the presence of co-dominant Methanosarcinales related species were required to produce higher amounts of CH4 than VFA.
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Affiliation(s)
- Lucia Braga Nan
- INRAE, Univ Montpellier, LBE, 102 Avenue des Etangs, 11100 Narbonne, France
| | - Eric Trably
- INRAE, Univ Montpellier, LBE, 102 Avenue des Etangs, 11100 Narbonne, France
| | | | - Nicolas Bernet
- INRAE, Univ Montpellier, LBE, 102 Avenue des Etangs, 11100 Narbonne, France
| | | | - Renaud Escudié
- INRAE, Univ Montpellier, LBE, 102 Avenue des Etangs, 11100 Narbonne, France
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18
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Lacroux J, Trably E, Bernet N, Steyer JP, van Lis R. Mixotrophic growth of microalgae on volatile fatty acids is determined by their undissociated form. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101870] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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19
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Moscoviz R, Quéméner EDL, Trably E, Bernet N, Hamelin J. Novel Outlook in Microbial Ecology: Nonmutualistic Interspecies Electron Transfer. Trends Microbiol 2020; 28:245-253. [PMID: 32155432 DOI: 10.1016/j.tim.2020.01.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/16/2020] [Accepted: 01/21/2020] [Indexed: 02/06/2023]
Abstract
Recent advances in microbial electrochemical technologies have revealed the existence of numerous and highly diverse microorganisms able to exchange electrons with electrodes. This diversity could reflect the capacity of microorganisms to release and/or retrieve electrons with each other in natural environments. So far, this interspecies electron transfer has been studied with a special focus on syntrophy and was successfully demonstrated for several couples of species. In this article we argue that electron exchange between microbes exists beyond syntrophy or mutualism and could also promote competitive and even parasitic behaviour. Based on three interesting case studies identified from the literature, we also highlight that such nonmutualistic interactions could be widespread and of particular significance for the survival of pathogens or the shaping of complex microbial communities.
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Affiliation(s)
- Roman Moscoviz
- SUEZ, Centre International de Recherche Sur l'Eau et l'Environnement (CIRSEE), Le Pecq, France.
| | | | - Eric Trably
- INRAE, Université Montpellier, LBE, Narbonne, France
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20
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Carrillo-Reyes J, Buitrón G, Moreno-Andrade I, Tapia-Rodríguez AC, Palomo-Briones R, Razo-Flores E, Aguilar-Juárez O, Arreola-Vargas J, Bernet N, Braga AFM, Braga L, Castelló E, Chatellard L, Etchebehere C, Fuentes L, León-Becerril E, Méndez-Acosta HO, Ruiz-Filippi G, Tapia-Venegas E, Trably E, Wenzel J, Zaiat M. Standardized protocol for determination of biohydrogen potential. MethodsX 2020; 7:100754. [PMID: 32021817 PMCID: PMC6993000 DOI: 10.1016/j.mex.2019.11.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/29/2019] [Indexed: 12/05/2022] Open
Abstract
Biohydrogen production potential (BHP) depends on several factors like inoculum source, substrate, pH, among many others. Batch assays are the most common strategy to evaluate such parameters, where the comparison is a challenging task due to the different procedures used. The present method introduces the first internationally validated protocol, evaluated by 8 independent laboratories from 5 different countries, to assess the biohydrogen potential. As quality criteria, a coefficient of variation of the cumulative hydrogen production (Hmax) was defined to be <15 %. Two options to run BHP batch tests were proposed; a manual protocol with periodic measurements of biogas production, needing conventional laboratory materials and analytical equipment for biogas characterization; and an automatic protocol, which is run in a device developed for online measurements of low biogas production. The detailed procedures for both protocol options are presented, as well as data validating them. The validation showed acceptable repeatability and reproducibility, measured as intra- and inter-laboratory coefficient of variation, which can be reduced up to 9 %.
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Affiliation(s)
- Julián Carrillo-Reyes
- Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Queretaro, 76230, Mexico
| | - Germán Buitrón
- Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Queretaro, 76230, Mexico
| | - Iván Moreno-Andrade
- Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Queretaro, 76230, Mexico
| | - Aida Cecilia Tapia-Rodríguez
- División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica A.C., Camino a la Presa San José No. 2055, Col. Lomas 4a Sección, C.P. 78216, San Luis Potosí, SLP, Mexico
| | - Rodolfo Palomo-Briones
- División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica A.C., Camino a la Presa San José No. 2055, Col. Lomas 4a Sección, C.P. 78216, San Luis Potosí, SLP, Mexico
| | - Elías Razo-Flores
- División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica A.C., Camino a la Presa San José No. 2055, Col. Lomas 4a Sección, C.P. 78216, San Luis Potosí, SLP, Mexico
| | - Oscar Aguilar-Juárez
- Department of Environmental Technology, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de la Normal, C.P. 44270, Guadalajara, Jalisco, Mexico
| | - Jorge Arreola-Vargas
- División de Procesos Industriales, Universidad Tecnológica de Jalisco, Luis J. Jiménez No. 577, 1o de Mayo, C.P. 44979, Guadalajara, Jalisco, Mexico
| | | | - Adriana Ferreira Maluf Braga
- Biological Process Laboratory, São Carlos School of Engineering, University of São Paulo (LPB/EESC/USP), Av. João Dagnone 1100, São Carlos, São Paulo, 13563-120, Brazil
| | - Lucia Braga
- Laboratorio BioProA, Facultad de Ingeniería, Universidad de la República de Uruguay, Av. Julio Herrera y Reissig 565, Montevideo, Uruguay
| | - Elena Castelló
- Laboratorio BioProA, Facultad de Ingeniería, Universidad de la República de Uruguay, Av. Julio Herrera y Reissig 565, Montevideo, Uruguay
| | | | - Claudia Etchebehere
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo, Uruguay
| | - Laura Fuentes
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo, Uruguay
| | - Elizabeth León-Becerril
- Department of Environmental Technology, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C., Av. Normalistas 800, Col. Colinas de la Normal, C.P. 44270, Guadalajara, Jalisco, Mexico
| | - Hugo Oscar Méndez-Acosta
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Blvd. M. García Barragan 1451, C.P. 44430, Guadalajara, Jalisco, Mexico
| | - Gonzalo Ruiz-Filippi
- Escuela de Ingeniería Bioquímica, Facultad de Ingeniería, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso, Chile
| | - Estela Tapia-Venegas
- Escuela de Ingeniería Bioquímica, Facultad de Ingeniería, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso, Chile
| | - Eric Trably
- INRAE, Univ. Montpellier, LBE, Narbonne, France
| | - Jorge Wenzel
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo, Uruguay
| | - Marcelo Zaiat
- Biological Process Laboratory, São Carlos School of Engineering, University of São Paulo (LPB/EESC/USP), Av. João Dagnone 1100, São Carlos, São Paulo, 13563-120, Brazil
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21
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Okonkwo O, Escudie R, Bernet N, Mangayil R, Lakaniemi AM, Trably E. Bioaugmentation enhances dark fermentative hydrogen production in cultures exposed to short-term temperature fluctuations. Appl Microbiol Biotechnol 2019; 104:439-449. [PMID: 31754763 PMCID: PMC6942602 DOI: 10.1007/s00253-019-10203-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/27/2019] [Accepted: 10/19/2019] [Indexed: 01/20/2023]
Abstract
Hydrogen-producing mixed cultures were subjected to a 48-h downward or upward temperature fluctuation from 55 to 35 or 75 °C. Hydrogen production was monitored during the fluctuations and for three consecutive batch cultivations at 55 °C to evaluate the impact of temperature fluctuations and bioaugmentation with synthetic mixed culture of known H2 producers either during or after the fluctuation. Without augmentation, H2 production was significantly reduced during the downward temperature fluctuation and no H2 was produced during the upward fluctuation. H2 production improved significantly during temperature fluctuation when bioaugmentation was applied to cultures exposed to downward or upward temperatures. However, when bioaugmentation was applied after the fluctuation, i.e., when the cultures were returned to 55 °C, the H2 yields obtained were between 1.6 and 5% higher than when bioaugmentation was applied during the fluctuation. Thus, the results indicate the usefulness of bioaugmentation in process recovery, especially if bioaugmentation time is optimised.
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Affiliation(s)
| | | | | | - Rahul Mangayil
- Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
| | - Aino-Maija Lakaniemi
- Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
| | - Eric Trably
- LBE, Univ Montpellier, INRA, Narbonne, France
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22
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Pastor-Poquet V, Papirio S, Harmand J, Steyer JP, Trably E, Escudié R, Esposito G. Assessing practical identifiability during calibration and cross-validation of a structured model for high-solids anaerobic digestion. Water Res 2019; 164:114932. [PMID: 31400592 DOI: 10.1016/j.watres.2019.114932] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 07/11/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
High-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW) is operated at a total solid (TS) content ≥ 10% to enhance the waste treatment economy, though it might be associated to free ammonia (NH3) inhibition. This study aimed to calibrate and cross-validate a HS-AD model for homogenized reactors in order to assess the effects of high NH3 levels in HS-AD of OFMSW, but also to evaluate the suitability of the reversible non-competitive inhibition function to reproduce the effect of NH3 on the main acetogenic and methanogenic populations. The practical identifiability of structural/biochemical parameters (i.e. 35) and initial conditions (i.e. 32) was evaluated using batch experiments at different TS and/or inoculum-to-substrate ratios. Variance-based global sensitivity analysis and approximate Bayesian computation were used for parameter optimization. The experimental data in this study permitted to estimate up to 8 biochemical parameters, whereas the rest of parameters and biomass contents were poorly identifiable. The study also showed the relatively high levels of NH3 (i.e. up to 2.3 g N/L) and ionic strength (i.e. up to 0.9 M) when increasing TS in HS-AD of OFMSW. However, the NH3 non-competitive function was unable to capture the acetogenic/methanogenic inhibition. Therefore, the calibration emphasized the need for target-oriented experimental data to enhance the practical identifiability and the predictive capabilities of structured HS-AD models, but also the need for further testing the NH3 inhibition function used in these simulations.
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Affiliation(s)
- Vicente Pastor-Poquet
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043, Cassino, FR, Italy; LBE, Univ. Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France.
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, via Claudio 21, 80125, Napoli, Italy
| | - Jérôme Harmand
- LBE, Univ. Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France
| | | | - Eric Trably
- LBE, Univ. Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France
| | - Renaud Escudié
- LBE, Univ. Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, via Claudio 21, 80125, Napoli, Italy
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23
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Santiago SG, Trably E, Latrille E, Buitrón G, Moreno-Andrade I. The hydraulic retention time influences the abundance of Enterobacter, Clostridium and Lactobacillus during the hydrogen production from food waste. Lett Appl Microbiol 2019; 69:138-147. [PMID: 31219171 DOI: 10.1111/lam.13191] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 06/03/2019] [Accepted: 06/12/2019] [Indexed: 11/26/2022]
Abstract
The influence of hydraulic retention time (HRT) on the microbial communities was evaluated in an anaerobic sequencing batch reactor (AnSBR) using organic waste from a restaurant as the substrate. The relationship among Lactobacillus, Clostridium and Bacillus as key micro-organisms on hydrogen production from organic solid waste was studied. The effect of the HRT (8-48 h) on the hydrogen production and the microbial community was evaluated. Quantitative PCR was applied to determine the abundance of bacteria (in particular, Enterobacter, Clostridium and Lactobacillus genera). An AnSBR fermentative reactor was operated for 111 cycles, with carbohydrate and organic matter removal efficiencies of 80 ± 15·42% and 22·1 ± 4·49% respectively. The highest percentage of hydrogen in the biogas (23·2 ± 11·1 %), and the specific production rate (0·42 ± 0·16 mmol H2 gVSadded -1 d-1 ) were obtained at an HRT of 48 h. The decrease in the HRT generated an increase in the hydrogen production rate but decreasing the content of the hydrogen in the gas. HRT significantly influence the abundance of Enterobacter, Clostridium and Lactobacillus during the hydrogen production from food waste leading the hydrogen production as well as the metabolic pathways. The microbial analysis revealed a direct relationship between the HRT and the presence of fermentative bacteria (Enterobacter, Clostridium and Lactobacillus genera). Clostridium sp. predominated at an HRT of 48 h, while Enterobacter and Lactobacillus predominated at HRTs between 8 and 24 h. SIGNIFICANCE AND IMPACT OF THE STUDY: Significance and Impact of the Study: It was demonstrated that hydrogen production using food waste was influenced by the hydraulic retention time (HRT), and closely related to changes in microbial communities together with differences in metabolic patterns (e.g. volatile fatty acids, lactate, etc.). The decrease in the HRT led to the dominance of lactic acid bacteria within the microbial community whereas the increase in HRT favoured the emergence of Clostridium bacteria and the increase in acetic and butyric acids. Statistical data analysis revealed a direct relationship existing between the HRT and the microbial community composition in fermentative bacteria. This study provides new insight into the relationship between the bioprocess operation and the microbial community to understand better and control the biohydrogen production.
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Affiliation(s)
- S G Santiago
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Querétaro, México
| | - E Trably
- LBE, Univ Montpellier, INRA, Narbonne, France
| | - E Latrille
- LBE, Univ Montpellier, INRA, Narbonne, France
| | - G Buitrón
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Querétaro, México
| | - I Moreno-Andrade
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Querétaro, México
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24
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Pastor-Poquet V, Papirio S, Steyer JP, Trably E, Escudié R, Esposito G. Modelling non-ideal bio-physical-chemical effects on high-solids anaerobic digestion of the organic fraction of municipal solid waste. J Environ Manage 2019; 238:408-419. [PMID: 30870673 DOI: 10.1016/j.jenvman.2019.03.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/16/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
This study evaluates the main effects of including 'non-ideal' bio-physical-chemical corrections in high-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW), at total solid (TS) between 10 and 40%. As a novel approach, a simple 'non-ideal' module, accounting for the effects of ionic strength (I) on the main acid-base equilibriums, was coupled to a HS-AD model, to jointly evaluate the effects of 'non-ideality' and the TS content dynamics on the HS-AD bio-physical-chemistry. 'Non-ideality' influenced the pH, concentration of inhibitors (i.e. NH3), and liquid-gas transfer (i.e. CO2), particularly at higher TS (i.e. ≥ 20%). Meanwhile, fitting the experimental data for batch assays at 15% TS showed that HS-AD of OFMSW might be operated at I ≥ 0.5 M. Therefore, all HS-AD simulations should account for 'non-ideal' corrections, when assessing the main inhibitory mechanisms (i.e. NH3 buildup and acidification) potentially occurring in HS-AD of OFMSW.
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Affiliation(s)
- Vicente Pastor-Poquet
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043, Cassino, FR, Italy; LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France.
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, via Claudio 21, 80125, Napoli, Italy
| | | | - Eric Trably
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France
| | - Renaud Escudié
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France
| | - Giovanni Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043, Cassino, FR, Italy
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Koók L, Quéméner EDL, Bakonyi P, Zitka J, Trably E, Tóth G, Pavlovec L, Pientka Z, Bernet N, Bélafi-Bakó K, Nemestóthy N. Behavior of two-chamber microbial electrochemical systems started-up with different ion-exchange membrane separators. Bioresour Technol 2019; 278:279-286. [PMID: 30708331 DOI: 10.1016/j.biortech.2019.01.097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 06/09/2023]
Abstract
In this study, microbial fuel cells (MFCs) - operated with novel cation- and anion-exchange membranes, in particular AN-VPA 60 (CEM) and PSEBS DABCO (AEM) - were assessed comparatively with Nafion proton exchange membrane (PEM). The process characterization involved versatile electrochemical (polarization, electrochemical impedance spectroscopy - EIS, cyclic voltammetry - CV) and biological (microbial structure analysis) methods in order to reveal the influence of membrane-type during start-up. In fact, the use of AEM led to 2-5 times higher energy yields than CEM and PEM and the lowest MFC internal resistance (148 ± 17 Ω) by the end of start-up. Regardless of the membrane-type, Geobacter was dominantly enriched on all anodes. Besides, CV and EIS measurements implied higher anode surface coverage of redox compounds for MFCs and lower membrane resistance with AEM, respectively. As a result, AEM based on PSEBS DABCO could be found as a promising material to substitute Nafion.
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Affiliation(s)
- László Koók
- Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200 Veszprém, Hungary
| | | | - Péter Bakonyi
- Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200 Veszprém, Hungary
| | - Jan Zitka
- Institute of Macromolecular Chemistry, AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Eric Trably
- LBE, Univ Montpellier, INRA, Narbonne, France
| | - Gábor Tóth
- Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200 Veszprém, Hungary
| | - Lukas Pavlovec
- Institute of Macromolecular Chemistry, AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Zbynek Pientka
- Institute of Macromolecular Chemistry, AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | | | - Katalin Bélafi-Bakó
- Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200 Veszprém, Hungary.
| | - Nándor Nemestóthy
- Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200 Veszprém, Hungary
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Cazier EA, Trably E, Steyer JP, Escudie R. Reversibility of hydrolysis inhibition at high hydrogen partial pressure in dry anaerobic digestion processes fed with wheat straw and inoculated with anaerobic granular sludge. Waste Manag 2019; 85:498-505. [PMID: 30803605 DOI: 10.1016/j.wasman.2019.01.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 01/11/2019] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
In dry anaerobic digestion (AD), methanogenic performances are lowered by high solid contents. Low performances are often caused by a decrease of the gas-liquid transfer kinetics leading to local accumulation of inhibitory by-products. Hydrogen was previously identified as an inhibitor of hydrolytic and acetogenic microbial activities in dry AD. CO2 is also generated but its impact on the microbial activity remains unknown. In this study, the reversibility of dry AD inhibition at high H2 partial pressure (PH2 of 1 bar) was investigated by adding CO2 (400 mbars) after 11 and 18 days of methanogenesis inhibition, in an AD process operated at 25% TS, using wheat straw as substrate and inoculated with anaerobic granular sludge. As soon as CO2 was added, the methanogenic activity rapidly recovered within 3 days, from 0.41 ± 0.1 to 3.77 ± 0.8 and then 2.25 ± 0.3, likely through the hydrogenotrophic pathway followed by the acetoclastic pathway, respectively. This result was confirmed by the high abundance of Methanomicrobiales (83%) and the emergence of Methanosarcinales sp (up to 17%) within the methanogenic community. Furthermore, the recovery kinetics were impacted by the duration of the inhibition period suggesting a different impact of the high PH2 on hydrogenotrophic and acetoclastic methanogens.
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Affiliation(s)
- Elisabeth A Cazier
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - Eric Trably
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
| | | | - Renaud Escudie
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France
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Pastor-Poquet V, Papirio S, Trably E, Rintala J, Escudié R, Esposito G. Semi-continuous mono-digestion of OFMSW and Co-digestion of OFMSW with beech sawdust: Assessment of the maximum operational total solid content. J Environ Manage 2019; 231:1293-1302. [PMID: 30297222 DOI: 10.1016/j.jenvman.2018.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 09/07/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
In this study, mono-digestion of the organic fraction of municipal solid waste (OFMSW) and co-digestion of OFMSW with beech sawdust, simulating green waste, were used to investigate the maximum operational total solid (TS) content in semi-continuous high-solids anaerobic digestion (HS-AD). To alleviate substrate overloading in HS-AD, the effluent mass was relatively reduced compared to the influent mass, extending the mass retention time. To this aim, the reactor mass was daily evaluated, permitting to assess the reactor content removal by biogas production. During mono-digestion of OFMSW, the NH3 inhibition and the rapid TS removal prevented to maintain HS-AD conditions (i.e. TS ≥ 10%), without exacerbating the risk of reactor acidification. In contrast, the inclusion of sawdust in OFMSW permitted to operate HS-AD up to 30% TS, before acidification occurred. Therefore, including a lignocellulosic substrate in OFMSW can prevent acidification and stabilize HS-AD at very high TS contents (i.e. 20-30%).
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Affiliation(s)
- Vicente Pastor-Poquet
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043 Cassino, FR, Italy; LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France; Department of Chemistry and Bioengineering, Tampere University of Technology, Korkeakoulunkatu 10, FI-33720 Tampere, Finland.
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, via Claudio 21, 80125 Napoli, Italy
| | - Eric Trably
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France
| | - Jukka Rintala
- Department of Chemistry and Bioengineering, Tampere University of Technology, Korkeakoulunkatu 10, FI-33720 Tampere, Finland
| | - Renaud Escudié
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100, Narbonne, France
| | - Giovanni Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043 Cassino, FR, Italy
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Marone A, Trably E, Carrère H, Prompsy P, Guillon F, Joseph-Aimé M, Barakat A, Fayoud N, Bernet N, Escudié R. Enhancement of corn stover conversion to carboxylates by extrusion and biotic triggers in solid-state fermentation. Appl Microbiol Biotechnol 2018; 103:489-503. [PMID: 30406449 DOI: 10.1007/s00253-018-9463-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 10/02/2018] [Accepted: 10/08/2018] [Indexed: 11/24/2022]
Abstract
Solid-state fermentation is a potential technology for developing lignocellulosic biomass-based biorefineries. This work dealt with solid-state fermentation for carboxylates production from corn stover, as building blocks for a lignocellulosic feedstock-based biorefinery. The effect of extrusion pretreatment, together with the action of a microbial consortia and hydrolytic enzymes as biotic triggers, was investigated on corn stover conversion, microbial metabolic pathways, and populations. The extrusion caused changes in the physical and morphological characteristics, without altering the biochemical composition of the corn stover. Extrusion also led to remarkable differences in the composition of the indigenous microbial population of the substrate. Consequently, it affected the structure of community developed after fermentation and the substrate conversion yield, which increased by 118% (from 23 ± 4 gCOD/kgVSi obtained with raw substrate to 51 ± 1 gCOD/kgVSi with extruded corn stover) with regard to self-fermentation experiments. The use of activated sludge as inoculum further increased the total substrate conversion into carboxylates, up to 60 ± 2 gCOD/kgVSi, and shaped the microbial communities (mainly composed of bacteria from the Clostridia and Bacteroidia classes) with subsequent homogenization of the fermentation pathways. The addition of hydrolytic enzymes into the reactors further increased the corn stover conversion, leading to a maximum yield of 142 ± 1 gCOD/kgVSi. Thus, extrusion pretreatment combined with the use of an inoculum and enzyme addition increased by 506% corn stover conversion into carboxylates. Beside biomass pretreatment, the results of this study indicated that biotic factor greatly impacted solid-state fermentation by shaping the microbial communities and related metabolic pathways.
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Affiliation(s)
- Antonella Marone
- LBE, INRA, Univ Montpellier, 102 Avenue des Etangs, F-11100, Narbonne, France.,GENOCOV, Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Eric Trably
- LBE, INRA, Univ Montpellier, 102 Avenue des Etangs, F-11100, Narbonne, France.
| | - Hélène Carrère
- LBE, INRA, Univ Montpellier, 102 Avenue des Etangs, F-11100, Narbonne, France
| | - Pacôme Prompsy
- LBE, INRA, Univ Montpellier, 102 Avenue des Etangs, F-11100, Narbonne, France
| | | | | | - Abdellatif Barakat
- UMR, IATE, CIRAD, Montpellier SupAgro, INRA, Université de Montpellier, 34060, Montpellier, France
| | - Nour Fayoud
- UMR, IATE, CIRAD, Montpellier SupAgro, INRA, Université de Montpellier, 34060, Montpellier, France.,Mohammed VI Polytechnic University, Ben Guerir, Morocco
| | - Nicolas Bernet
- LBE, INRA, Univ Montpellier, 102 Avenue des Etangs, F-11100, Narbonne, France
| | - Renaud Escudié
- LBE, INRA, Univ Montpellier, 102 Avenue des Etangs, F-11100, Narbonne, France
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Pastor-Poquet V, Papirio S, Steyer JP, Trably E, Escudié R, Esposito G. High-solids anaerobic digestion model for homogenized reactors. Water Res 2018; 142:501-511. [PMID: 29929103 DOI: 10.1016/j.watres.2018.06.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/22/2018] [Accepted: 06/07/2018] [Indexed: 06/08/2023]
Abstract
During high-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW), an important total solid (TS) removal occurs, leading to the modification of the reactor content mass/volume, in contrast to 'wet' anaerobic digestion (AD). Therefore, HS-AD mathematical simulations need to be approached differently than 'wet' AD simulations. This study aimed to develop a modelling tool based on the anaerobic digestion model 1 (ADM1) capable of simulating the TS and the reactor mass/volume dynamics in HS-AD of OFMSW. Four hypotheses were used, including the effects of apparent concentrations at high TS. The model simulated adequately HS-AD of OFMSW in batch and continuous mode, particularly the evolution of TS, reactor mass, ammonia and volatile fatty acids. By adequately simulating the reactor content mass/volume and the TS, the HS-AD model might bring further insight about potentially inhibitory mechanisms (i.e. NH3 buildup and/or acidification) occurring in HS-AD of OFMSW.
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Affiliation(s)
- Vicente Pastor-Poquet
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043 Cassino (FR), Italy; LBE, Univ Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France.
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125 Napoli, Italy
| | | | - Eric Trably
- LBE, Univ Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France
| | - Renaud Escudié
- LBE, Univ Montpellier, INRA, 102 Avenue des Etangs, 11100, Narbonne, France
| | - Giovanni Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043 Cassino (FR), Italy
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Capson-Tojo G, Moscoviz R, Ruiz D, Santa-Catalina G, Trably E, Rouez M, Crest M, Steyer JP, Bernet N, Delgenès JP, Escudié R. Addition of granular activated carbon and trace elements to favor volatile fatty acid consumption during anaerobic digestion of food waste. Bioresour Technol 2018; 260:157-168. [PMID: 29625288 DOI: 10.1016/j.biortech.2018.03.097] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
The effect of supplementing granular activated carbon and trace elements on the anaerobic digestion performance of consecutive batch reactors treating food waste was investigated. The results from the first batch suggest that addition of activated carbon favored biomass acclimation, improving acetic acid consumption and enhancing methane production. Adding trace elements allowed a faster consumption of propionic acid. A second batch proved that a synergy existed when activated carbon and trace elements were supplemented simultaneously. The degradation kinetics of propionate oxidation were particularly improved, reducing significantly the batch duration and improving the average methane productivities. Addition of activated carbon favored the growth of archaea and syntrophic bacteria, suggesting that interactions between these microorganisms were enhanced. Interestingly, microbial analyses showed that hydrogenotrophic methanogens were predominant. This study shows for the first time that addition of granular activated carbon and trace elements may be a feasible solution to stabilize food waste anaerobic digestion.
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Affiliation(s)
- Gabriel Capson-Tojo
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France; Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Roman Moscoviz
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France
| | - Diane Ruiz
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France
| | | | - Eric Trably
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France
| | - Maxime Rouez
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Marion Crest
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | | | - Nicolas Bernet
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France
| | | | - Renaud Escudié
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France.
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31
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Capson-Tojo G, Trably E, Rouez M, Crest M, Bernet N, Steyer JP, Delgenès JP, Escudié R. Methanosarcina plays a main role during methanogenesis of high-solids food waste and cardboard. Waste Manag 2018; 76:423-430. [PMID: 29636217 DOI: 10.1016/j.wasman.2018.04.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/02/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
Anaerobic digestion of food waste is a complex process often hindered by high concentrations of volatile fatty acids and ammonia. Methanogenic archaea are more sensitive to these inhibitors than bacteria and thus the structure of their community is critical to avoid reactor acidification. In this study, the performances of three different inocula were compared using batch digestion tests of food waste and cardboard mixtures. Particular attention was paid to the archaeal communities in the inocula and after digestion. While the tests started with inocula rich in Methanosarcina led to efficient methane production, VFAs accumulated in the reactors where inocula initially were poor in this archaea and no methane was produced. In addition, higher substrate loads were tolerated when greater proportions of Methanosarcina were initially present in the inoculum. Independently of the inoculum origin, Methanosarcina were the dominant methanogens in the digestates from the experiments that efficiently produced methane. These results suggest that the initial archaeal composition of the inoculum is crucial during reactor start-up to achieve stable anaerobic digestion at high concentrations of ammonia and organic acids.
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Affiliation(s)
- Gabriel Capson-Tojo
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France; Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Eric Trably
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - Maxime Rouez
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Marion Crest
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Nicolas Bernet
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | | | | | - Renaud Escudié
- LBE, Univ Montpellier, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
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Parthiba Karthikeyan O, Trably E, Mehariya S, Bernet N, Wong JWC, Carrere H. Pretreatment of food waste for methane and hydrogen recovery: A review. Bioresour Technol 2018; 249:1025-1039. [PMID: 29111164 DOI: 10.1016/j.biortech.2017.09.105] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/11/2017] [Accepted: 09/15/2017] [Indexed: 05/16/2023]
Abstract
Food waste (FW) management by biological process is more attractive and eco-friendly approach than thermo-chemical conversion or landfilling. However, FW composition and physico-chemical and biological characteristics affect the overall biological process in terms of product yield and degradation rate. To overcome this major bottle-neck, the pretreatment of FW is proposed. Therefore this review aims to provide a comprehensive summary of the importance of pretreatment of FW with respect to FW management by anaerobic digestion (AD) and dark fermentation (DF). It also reviews the existing knowledge gaps and future research perspectives for better integration of FW pretreatments for AD and DF, which should include (i) the preservation of carbon mass through freeze and thaw, or drying; and (ii) improve the carbon accessibility through particle size reduction and thermal pretreatments for high-rate bioenergy recovery.
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Affiliation(s)
- Obulisamy Parthiba Karthikeyan
- Institute of Bioresource and Agriculture, Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Eric Trably
- LBE, INRA, Univ Montpellier, Narbonne, France
| | - Sanjeet Mehariya
- Institute of Bioresource and Agriculture, Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | | | - Jonathan W C Wong
- Institute of Bioresource and Agriculture, Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China.
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33
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Palomo-Briones R, Trably E, López-Lozano NE, Celis LB, Méndez-Acosta HO, Bernet N, Razo-Flores E. Hydrogen metabolic patterns driven by Clostridium-Streptococcus community shifts in a continuous stirred tank reactor. Appl Microbiol Biotechnol 2018; 102:2465-2475. [DOI: 10.1007/s00253-018-8737-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 01/08/2023]
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34
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Carmona-Martínez AA, Lacroix R, Trably E, Da Silva S, Bernet N. On the actual anode area that contributes to the current density produced by electroactive biofilms. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.10.200] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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35
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Ghimire A, Trably E, Frunzo L, Pirozzi F, Lens PNL, Esposito G, Cazier EA, Escudié R. Effect of total solids content on biohydrogen production and lactic acid accumulation during dark fermentation of organic waste biomass. Bioresour Technol 2018; 248:180-186. [PMID: 28764910 DOI: 10.1016/j.biortech.2017.07.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 05/24/2023]
Abstract
Production of biohydrogen and related metabolic by-products was investigated in Solid State Dark Fermentation (SSDF) of food waste (FW) and wheat straw (WS). The effect of the total solids (TS) content and H2 partial pressure (ppH2), two of the main operating factors of SSDF, were investigated. Batch tests with FW at 10, 15, 20, 25 and 30% TS showed considerable effects of the TS on metabolites distribution. H2 production was strongly inhibited for TS contents higher than 15% with a concomitant accumulation of lactic acid and a decrease in substrate conversion. Varying the ppH2 had no significant effect on the conversion products and overall degradation of FW and WS, suggesting that ppH2 was not the main limiting factor in SSDF. This study showed that the conversion of complex substrates by SSDF depends on the substrate type and is limited by the TS content.
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Affiliation(s)
- Anish Ghimire
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043 Cassino, FR, Italy; Nepal Engineering College, NEC- Center for Postgraduate Studies, G.P.O. Box: 10210, Kathmandu, Nepal(1).
| | - Eric Trably
- LBE, INRA, Univ Montpellier, 11100 Narbonne, France
| | - Luigi Frunzo
- Department of Mathematics and Applications Renato Caccioppoli, University of Naples Federico II, via Cintia, Monte S. Angelo, I-80126 Naples, Italy
| | - Francesco Pirozzi
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125 Naples, Italy
| | - Piet N L Lens
- UNESCO-IHE Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands
| | - Giovanni Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, 03043 Cassino, FR, Italy
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Hillion ML, Moscoviz R, Trably E, Leblanc Y, Bernet N, Torrijos M, Escudié R. Co-ensiling as a new technique for long-term storage of agro-industrial waste with low sugar content prior to anaerobic digestion. Waste Manag 2018; 71:147-155. [PMID: 29102356 DOI: 10.1016/j.wasman.2017.10.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/12/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
Biodegradable wastes produced seasonally need an upstream storage, because of the requirement for a constant feeding of anaerobic digesters. In the present article, the potential of co-ensiling biodegradable agro-industrial waste (sugar beet leaves) and lignocellulosic agricultural residue (wheat straw) to obtain a mixture with low soluble sugar content was evaluated for long-term storage prior to anaerobic digestion. The aim is to store agro-industrial waste while pretreating lignocellulosic biomass. The dynamics of co-ensiling was evaluated in vacuum-packed bags at lab-scale during 180 days. Characterization of the reaction by-products and microbial communities showed a succession of metabolic pathways. Even though the low initial sugars content was not sufficient to lower the pH under 4.5 and avoid undesirable fermentations, the methane potential was not substantially impacted all along the experiment. No lignocellulosic damages were observed during the silage process. Overall, it was shown that co-ensiling was effective to store highly fermentable fresh waste evenly with low sugar content and offers new promising possibilities for constant long-term supply of industrial anaerobic digesters.
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Affiliation(s)
- Marie-Lou Hillion
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France; Vol-V Biomasse, 45 impasse du Petit Pont, 76230 Isneauville, France
| | - Roman Moscoviz
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - Eric Trably
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - Yoann Leblanc
- Vol-V Biomasse, 45 impasse du Petit Pont, 76230 Isneauville, France
| | - Nicolas Bernet
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | | | - Renaud Escudié
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
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37
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Mota VT, Ferraz Júnior ADN, Trably E, Zaiat M. Biohydrogen production at pH below 3.0: Is it possible? Water Res 2018; 128:350-361. [PMID: 29121503 DOI: 10.1016/j.watres.2017.10.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 09/13/2017] [Accepted: 10/28/2017] [Indexed: 06/07/2023]
Abstract
Biological hydrogen production was investigated in continuous acidogenic reactors fed with sucrose at 30 °C without pH control. In the first experimental phase, three reactors were compared: a structured fixed-bed (FB), a granular UASB (UG) and a flocculent UASB (UF-1). They were run at 3.3 h HRT and 33 gCOD L-1d-1 OLR. Hydrogen production occurred throughout the experimental period with an average effluent pH of only 2.8. The FB, UG and UF-1 reactors presented volumetric hydrogen production rates (VHPR) of 95 ± 69, 45 ± 37 and 54 ± 32 mLH2 L-1h-1, respectively; and H2 yields (HY) of 1.5 ± 0.8, 0.8 ± 0.6 and 1.2 ± 0.7 molH2 mol-1 sucroseconsumed, respectively. The UF-1 reactor showed intermediate VHPR and HY, but no declining trend, contrary to what was observed in the FB reactor. Thus, aiming at continuous and long-term H2 production, a flocculent UASB was applied in the second experimental phase. In this phase, the HRT of the acidogenic reactor, which was named UF-2, was raised to 4.6 h, resulting in an OLR of 25 gCOD L-1d-1. The VHPR and the HY increased considerably to 175 ± 44 mLH2 L-1h-1 and 3.4 ± 0.7 molH2 mol-1 sucroseconsumed, respectively. These improvements were accompanied by greater sucrose removal, higher suspended biomass concentration, less production of lactate and more of acetate, and high ethanol concentration. Contradicting the current published literature data that reports strong inhibition of H2 production by dark fermentation at pH less than 4.0, the UF-2 reactor presented stable, long-term H2 production with satisfactory yields at pH 2.7 on average. 16 S rDNA sequencing revealed that two sequences assigned as Ethanoligenens and Clostridium accounted for over 70% of the microbiota in all the reactors. The non-necessity of adding alkalizing agents and the successful H2 production under very acid conditions, demonstrated in this study, open a new field of investigation in biological hydrogen production by dark fermentation towards a more sustainable and feasible technology.
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Affiliation(s)
- V T Mota
- LPB, Department of Hydraulics and Sanitary Engineering, São Carlos School of Engineering, University of São Paulo (USP), Avenida João Dagnone, 1100, São Carlos, SP, 13563-120, Brazil.
| | - A D N Ferraz Júnior
- CTBE, CNPEM, Rua Giuseppe Máximo Scolfaro 10000, Campinas, SP, 13083-970, Brazil
| | - E Trably
- LBE, INRA, Univ Montpellier, 11100, Narbonne, France
| | - M Zaiat
- LPB, Department of Hydraulics and Sanitary Engineering, São Carlos School of Engineering, University of São Paulo (USP), Avenida João Dagnone, 1100, São Carlos, SP, 13563-120, Brazil
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38
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Yun YM, Lee MK, Im SW, Marone A, Trably E, Shin SR, Kim MG, Cho SK, Kim DH. Biohydrogen production from food waste: Current status, limitations, and future perspectives. Bioresour Technol 2018; 248:79-87. [PMID: 28684176 DOI: 10.1016/j.biortech.2017.06.107] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Among the various biological routes for H2 production, dark fermentation is considered the most practically applicable owing to its capability to degrade organic wastes and high H2 production rate. Food waste (FW) has high carbohydrate content and easily hydrolysable in nature, exhibiting higher H2 production potential than that of other organic wastes. In this review article, first, the current status of H2 production from FW by dark fermentation and the strategies applied for enhanced performance are briefly summarized. Then, the technical and economic limitations of dark fermentation of FW are thoroughly discussed. Economic assessment revealed that the economic feasibility of H2 production from FW by dark fermentation is questionable. Current efforts to further increase H2 yield and waste removal efficiency are also introduced. Finally, future perspectives along with possible routes converting dark fermentation effluent to valuable fuels and chemicals are discussed.
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Affiliation(s)
- Yeo-Myeong Yun
- Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Mo-Kwon Lee
- Department of Civil Engineering, Inha University, 100 Inharo, Nam-gu, Incheon 402-751, Republic of Korea
| | - Seong-Won Im
- Department of Civil Engineering, Inha University, 100 Inharo, Nam-gu, Incheon 402-751, Republic of Korea
| | - Antonella Marone
- INRA, UR0050 Laboratoire de Biotechnologie de l'Environnement, F-11100 Narbonne, France
| | - Eric Trably
- INRA, UR0050 Laboratoire de Biotechnologie de l'Environnement, F-11100 Narbonne, France
| | - Sang-Ryong Shin
- Department of Civil Engineering, Inha University, 100 Inharo, Nam-gu, Incheon 402-751, Republic of Korea
| | - Min-Gyun Kim
- Department of Civil Engineering, Inha University, 100 Inharo, Nam-gu, Incheon 402-751, Republic of Korea
| | - Si-Kyung Cho
- Department of Biological and Environmental Science, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyang, Gyeonggi-do, Republic of Korea
| | - Dong-Hoon Kim
- Department of Civil Engineering, Inha University, 100 Inharo, Nam-gu, Incheon 402-751, Republic of Korea.
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Sivagurunathan P, Kuppam C, Mudhoo A, Saratale GD, Kadier A, Zhen G, Chatellard L, Trably E, Kumar G. A comprehensive review on two-stage integrative schemes for the valorization of dark fermentative effluents. Crit Rev Biotechnol 2017; 38:868-882. [DOI: 10.1080/07388551.2017.1416578] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | - Chandrasekhar Kuppam
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Reduit, Republic of Mauritius
| | - Ganesh D. Saratale
- Department of Food Science & Biotechnology, Dongguk University- Seoul, Ilsandong-gu, Goyang-si, Gyonggido, Republic of Korea
| | - Abudukeremu Kadier
- Department of Chemical and Process Engineering, Faculty of Engineering & Built Environment, National University of Malaysia (UKM), Selangor, Malaysia
| | - Guangyin Zhen
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, PR China
| | | | | | - Gopalakrishnan Kumar
- Green Processing, Bioremediation and Alternative Energies Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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40
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Kronenberg M, Trably E, Bernet N, Patureau D. Biodegradation of polycyclic aromatic hydrocarbons: Using microbial bioelectrochemical systems to overcome an impasse. Environ Pollut 2017; 231:509-523. [PMID: 28841503 DOI: 10.1016/j.envpol.2017.08.048] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/09/2017] [Accepted: 08/11/2017] [Indexed: 05/22/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are hardly biodegradable carcinogenic organic compounds. Bioremediation is a commonly used method for treating PAH contaminated environments such as soils, sediment, water bodies and wastewater. However, bioremediation has various drawbacks including the low abundance, diversity and activity of indigenous hydrocarbon degrading bacteria, their slow growth rates and especially a limited bioavailability of PAHs in the aqueous phase. Addition of nutrients, electron acceptors or co-substrates to enhance indigenous microbial activity is costly and added chemicals often diffuse away from the target compound, thus pointing out an impasse for the bioremediation of PAHs. A promising solution is the adoption of bioelectrochemical systems. They guarantee a permanent electron supply and withdrawal for microorganisms, thereby circumventing the traditional shortcomings of bioremediation. These systems combine biological treatment with electrochemical oxidation/reduction by supplying an anode and a cathode that serve as an electron exchange facility for the biocatalyst. Here, recent achievements in polycyclic aromatic hydrocarbon removal using bioelectrochemical systems have been reviewed. This also concerns PAH precursors: total petroleum hydrocarbons and diesel. Removal performances of PAH biodegradation in bioelectrochemical systems are discussed, focussing on configurational parameters such as anode and cathode designs as well as environmental parameters like porosity, salinity, adsorption and conductivity of soil and sediment that affect PAH biodegradation in BESs. The still scarcely available information on microbiological aspects of bioelectrochemical PAH removal is summarised here. This comprehensive review offers a better understanding of the parameters that affect the removal of PAHs within bioelectrochemical systems. In addition, future experimental setups are proposed in order to study syntrophic relationships between PAH degraders and exoelectrogens. This synopsis can help as guide for researchers in their choices for future experimental designs aiming at increasing the power densities and PAH biodegradation rates using microbial bioelectrochemistry.
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Affiliation(s)
| | - Eric Trably
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - Nicolas Bernet
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
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41
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Capson-Tojo G, Rouez M, Crest M, Trably E, Steyer JP, Bernet N, Delgenès JP, Escudié R. Kinetic study of dry anaerobic co-digestion of food waste and cardboard for methane production. Waste Manag 2017; 69:470-479. [PMID: 28888806 DOI: 10.1016/j.wasman.2017.09.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 08/29/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
Dry anaerobic digestion is a promising option for food waste treatment and valorization. However, accumulation of ammonia and volatile fatty acids often occurs, leading to inefficient processes and digestion failure. Co-digestion with cardboard may be a solution to overcome this problem. The effect of the initial substrate to inoculum ratio (0.25 to 1gVS·gVS-1) and the initial total solids contents (20-30%) on the kinetics and performance of dry food waste mono-digestion and co-digestion with cardboard was investigated in batch tests. All the conditions produced methane efficiently (71-93% of the biochemical methane potential). However, due to lack of methanogenic activity, volatile fatty acids accumulated at the beginning of the digestion and lag phases in the methane production were observed. At increasing substrate to inoculum ratios, the initial acid accumulation was more pronounced and lower cumulative methane yields were obtained. Higher amounts of soluble organic matter remained undegraded at higher substrate loads. Although causing slightly longer lag phases, high initial total solids contents did not jeopardize the methane yields. Cardboard addition reduced acid accumulation and the decline in the yields at increasing substrate loads. However, cardboard addition also caused higher concentrations of propionic acid, which appeared as the most last acid to be degraded. Nevertheless, dry co-digestion of food waste and cardboard in urban areas is demonstrated asan interesting feasible valorization option.
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Affiliation(s)
- Gabriel Capson-Tojo
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France; Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Maxime Rouez
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Marion Crest
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Eric Trably
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France
| | | | - Nicolas Bernet
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France
| | | | - Renaud Escudié
- LBE, INRA, Univ. Montpellier, 102 avenue des Etangs, 11100 Narbonne, France.
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42
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Eskicioglu C, Monlau F, Barakat A, Ferrer I, Kaparaju P, Trably E, Carrère H. Assessment of hydrothermal pretreatment of various lignocellulosic biomass with CO 2 catalyst for enhanced methane and hydrogen production. Water Res 2017; 120:32-42. [PMID: 28478293 DOI: 10.1016/j.watres.2017.04.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/31/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Hydrothermal pretreatment of five lignocellulosic substrates (i.e. wheat straw, rice straw, biomass sorghum, corn stover and Douglas fir bark) were conducted in the presence of CO2 as a catalyst. To maximize disintegration and conversion into bioenergy (methane and hydrogen), pretreatment temperatures and subsequent pressures varied with a range of 26-175 °C, and 25-102 bars, respectively. Among lignin, cellulose and hemicelluloses, hydrothermal pretreatment caused the highest reduction (23-42%) in hemicelluloses while delignification was limited to only 0-12%. These reductions in structural integrity resulted in 20-30% faster hydrolysis rates during anaerobic digestion for the pretreated substrates of straws, sorghum, and corn stover while Douglas fir bark yielded 172% faster hydrolysis/digestion due to its highly refractory nature in the control. Furans and phenolic compounds formed in the pretreated hydrolyzates were below the inhibitory levels for methane and hydrogen production which had a range of 98-340 ml CH4/g volatile solids (VS) and 5-26 ml H2/g VS, respectively. Results indicated that hydrothermal pretreatment is able to accelerate the rate of biodegradation without generating high levels of inhibitory compounds while showing no discernible effect on ultimate biodegradation.
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Affiliation(s)
- Cigdem Eskicioglu
- UBC Bioreactor Technology Group, School of Engineering, The University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada; LBE, INRA, 11100, Narbonne, France.
| | - Florian Monlau
- IATE, CIRAD, Montpellier SupAgro, INRA, Université de Montpelier, 34060, Montpellier, France
| | - Abdellatif Barakat
- IATE, CIRAD, Montpellier SupAgro, INRA, Université de Montpelier, 34060, Montpellier, France; Materials Science and Nano-engineering Department, Mohamed 6 Polytechnic University, Lot 660, Hay Moulay Rachid, 43150, Benguerir, Morocco
| | - Ivet Ferrer
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya Barcelona Tech, c/Jordi Girona 1-3, Building D1, E-08034, Barcelona, Spain
| | - Prasad Kaparaju
- LBE, INRA, 11100, Narbonne, France; Griffith School of Engineering, Nathan Campus, Griffith University, 170 Kessels Road, QLD 4111, Australia
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43
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Moscoviz R, Trably E, Bernet N. Electro-fermentation triggering population selection in mixed-culture glycerol fermentation. Microb Biotechnol 2017; 11:74-83. [PMID: 28695687 PMCID: PMC5743810 DOI: 10.1111/1751-7915.12747] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 04/04/2017] [Accepted: 05/22/2017] [Indexed: 02/06/2023] Open
Abstract
Electro‐fermentation is a new technique that could be used to influence the global metabolism in mixed‐culture fermentation. In this study, a mixed‐culture cathodic electro‐fermentation of glycerol was investigated. Both microbial community structure and metabolic patterns were altered when compared to standard fermentation. This microbial population shift was more significant when the working electrodes were pre‐colonized by Geobacter sulfurreducens, before electro‐fermentation. The electro‐fermenting microbial community was more efficient for producing 1,3‐propanediol with an improved yield of 10% when compared with fermentation controls. Such improvement did not require high energy and total electron input represented < 1% of the total electron equivalents provided only by glycerol. A linear model was developed to estimate the individual metabolic pattern of each operational taxonomic unit. Application of this model compared to the experimental results suggests that the changes in global metabolism were supported by bacterial population selection rather than individual metabolism shift. This study shows for the first time that both fermentation pattern and bacterial community composition can be influenced by electro‐fermentation conditions.
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Affiliation(s)
- Roman Moscoviz
- LBE, INRA, 102 Avenue des étangs, 11100, Narbonne, France
| | - Eric Trably
- LBE, INRA, 102 Avenue des étangs, 11100, Narbonne, France
| | - Nicolas Bernet
- LBE, INRA, 102 Avenue des étangs, 11100, Narbonne, France
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44
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Capson-Tojo G, Trably E, Rouez M, Crest M, Steyer JP, Delgenès JP, Escudié R. Dry anaerobic digestion of food waste and cardboard at different substrate loads, solid contents and co-digestion proportions. Bioresour Technol 2017; 233:166-175. [PMID: 28282607 DOI: 10.1016/j.biortech.2017.02.126] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/24/2017] [Accepted: 02/25/2017] [Indexed: 06/06/2023]
Abstract
The increasing food waste production calls for developing efficient technologies for its treatment. Anaerobic processes provide an effective waste valorization. The influence of the initial substrate load on the performance of batch dry anaerobic co-digestion reactors treating food waste and cardboard was investigated. The load was varied by modifying the substrate to inoculum ratio (S/X), the total solids content and the co-digestion proportions. The results showed that the S/X was a crucial parameter. Within the tested values (0.25, 1 and 4gVS·gVS-1), only the reactors working at 0.25 produced methane. Methanosarcina was the main archaea, indicating its importance for efficient methanogenesis. Acidogenic fermentation was predominant at higher S/X, producing hydrogen and other metabolites. Higher substrate conversions (≤48%) and hydrogen yields (≤62mL·gVS-1) were achieved at low loads. This study suggests that different value-added compounds can be produced in dry conditions, with the initial substrate load as easy-to-control operational parameter.
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Affiliation(s)
- Gabriel Capson-Tojo
- LBE, INRA, 102 Avenue des Etangs, 11100 Narbonne, France; Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Eric Trably
- LBE, INRA, 102 Avenue des Etangs, 11100 Narbonne, France
| | - Maxime Rouez
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | - Marion Crest
- Suez, CIRSEE, 38 rue du Président Wilson, 78230 Le Pecq, France
| | | | | | - Renaud Escudié
- LBE, INRA, 102 Avenue des Etangs, 11100 Narbonne, France.
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45
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Moscoviz R, de Fouchécour F, Santa-Catalina G, Bernet N, Trably E. Cooperative growth of Geobacter sulfurreducens and Clostridium pasteurianum with subsequent metabolic shift in glycerol fermentation. Sci Rep 2017; 7:44334. [PMID: 28287150 PMCID: PMC5347079 DOI: 10.1038/srep44334] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/26/2017] [Indexed: 02/03/2023] Open
Abstract
Interspecies electron transfer is a common way to couple metabolic energy balances between different species in mixed culture consortia. Direct interspecies electron transfer (DIET) mechanism has been recently characterised with Geobacter species which couple the electron balance with other species through physical contacts. Using this mechanism could be an efficient and cost-effective way to directly control redox balances in co-culture fermentation. The present study deals with a co-culture of Geobacter sulfurreducens and Clostridium pasteurianum during glycerol fermentation. As a result, it was shown that Geobacter sulfurreducens was able to grow using Clostridium pasteurianum as sole electron acceptor. C. pasteurianum metabolic pattern was significantly altered towards improved 1,3-propanediol and butyrate production (+37% and +38% resp.) at the expense of butanol and ethanol production (−16% and −20% resp.). This metabolic shift was clearly induced by a small electron uptake that represented less than 0.6% of the electrons consumed by C. pasteurianum. A non-linear relationship was found between G. sulfurreducens growth (i.e the electrons transferred between the two species) and the changes in C. pasteurianum metabolite distribution. This study opens up new possibilities for controlling and increasing specificity in mixed culture fermentation.
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Affiliation(s)
- Roman Moscoviz
- LBE, INRA, 102 Avenue des étangs, 11100 Narbonne, France
| | | | | | - Nicolas Bernet
- LBE, INRA, 102 Avenue des étangs, 11100 Narbonne, France
| | - Eric Trably
- LBE, INRA, 102 Avenue des étangs, 11100 Narbonne, France
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46
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Cabrol L, Marone A, Tapia-Venegas E, Steyer JP, Ruiz-Filippi G, Trably E. Microbial ecology of fermentative hydrogen producing bioprocesses: useful insights for driving the ecosystem function. FEMS Microbiol Rev 2017; 41:158-181. [DOI: 10.1093/femsre/fuw043] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2016] [Indexed: 11/13/2022] Open
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47
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Chatellard L, Trably E, Carrère H. The type of carbohydrates specifically selects microbial community structures and fermentation patterns. Bioresour Technol 2016; 221:541-549. [PMID: 27686722 DOI: 10.1016/j.biortech.2016.09.084] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/16/2016] [Accepted: 09/17/2016] [Indexed: 05/24/2023]
Abstract
The impact on dark fermentation of seven carbohydrates as model substrates of lignocellulosic fractions (glucose, cellobiose, microcrystalline cellulose, arabinose, xylose, xylan and wheat straw) was investigated. Metabolic patterns and bacterial communities were characterized at the end of batch tests inoculated with manure digestate. It was found that hydrogen production was linked to the sugar type (pentose or hexose) and the degree of polymerisation. Hexoses produced less hydrogen, with a specific selection of lactate-producing bacterial community structures. Maximal hydrogen production was five times higher on pentose-based substrates, with specific bacterial community structures producing acetate and butyrate as main metabolites. Low hydrogen amounts accumulated from complex sugars (cellulose, xylan and wheat straw). A relatively high proportion of the reads was affiliated to Ruminococcaceae suggesting an efficient hydrolytic activity. Knowing that the bacterial community structure is very specific to a particular substrate offers new possibilities to design more efficient H2-producing biological systems.
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Affiliation(s)
| | - Eric Trably
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
| | - Hélène Carrère
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
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48
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49
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Moscoviz R, Toledo-Alarcón J, Trably E, Bernet N. Electro-Fermentation: How To Drive Fermentation Using Electrochemical Systems. Trends Biotechnol 2016; 34:856-865. [DOI: 10.1016/j.tibtech.2016.04.009] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/15/2016] [Accepted: 04/19/2016] [Indexed: 10/21/2022]
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50
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Marone A, Carmona-Martínez AA, Sire Y, Meudec E, Steyer JP, Bernet N, Trably E. Bioelectrochemical treatment of table olive brine processing wastewater for biogas production and phenolic compounds removal. Water Res 2016; 100:316-325. [PMID: 27208920 DOI: 10.1016/j.watres.2016.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 04/25/2016] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
Industry of table olives is widely distributed over the Mediterranean countries and generates large volumes of processing wastewaters (TOPWs). TOPWs contain high levels of organic matter, salt, and phenolic compounds that are recalcitrant to microbial degradation. This work aims to evaluate the potential of bioelectrochemical systems to simultaneously treat real TOPWs and recover energy. The experiments were performed in potentiostatically-controlled single-chamber systems fed with real TOPW and using a moderate halophilic consortium as biocatalyst. In conventional anaerobic digestion (AD) treatment, ie. where no potential was applied, no CH4 was produced. In comparison, Bio-Electrochemical Systems (BES) showed a maximum CH4 yield of 701 ± 13 NmL CH4·LTOPW(-1) under a current density of 7.1 ± 0.4 A m(-2) and with a coulombic efficiency of 30%. Interestingly, up to 80% of the phenolic compounds found in the raw TOPW (i.e. hydroxytyrosol and tyrosol) were removed. A new theoretical degradation pathway was proposed after identification of the metabolic by-products. Consistently, microbial community analysis at the anode revealed a clear and specific enrichment in anode-respiring bacteria (ARB) from the genera Desulfuromonas and Geoalkalibacter, supporting the key role of these electroactive microorganisms. As a conclusion, bioelectrochemical systems represent a promising bioprocess alternative for the treatment and energy recovery of recalcitrant TOPWs.
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Affiliation(s)
- A Marone
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France
| | | | - Y Sire
- INRA, UE999 Unité Expérimentale de Pech-Rouge, 11430, Gruissan, France
| | - E Meudec
- INRA, UMR1083 Sciences pour l'œnologie, Plateforme Polyphénols, Montpellier, France
| | - J P Steyer
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France
| | - N Bernet
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France.
| | - E Trably
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France
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