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Cabezas A, Azziz G, Bovio-Winkler P, Fuentes L, Braga L, Wenzel J, Sabaris S, Tarlera S, Etchebehere C. Ubiquity and Diversity of Cold Adapted Denitrifying Bacteria Isolated From Diverse Antarctic Ecosystems. Front Microbiol 2022; 13:827228. [PMID: 35923392 PMCID: PMC9339992 DOI: 10.3389/fmicb.2022.827228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 06/17/2022] [Indexed: 11/13/2022] Open
Abstract
Nitrogen cycle has been poorly investigated in Antarctic ecosystems. In particular, how extreme conditions of low temperature, dryness, and high radiation select the microorganisms involved in the cycle is not yet understood. Denitrification is an important step in the nitrogen cycle in which nitrate is reduced stepwise to the gases NO, N2O, and N2. Denitrification is carried out by a wide group of microorganisms spread in the phylogenetic tree. The aim of this work was to isolate and characterize denitrifying bacteria present in different cold environments from Antarctica. Bacterial isolates were obtained from lake, meltwater, sea, glacier ice, ornithogenic soil, and penguin feces samples from King George Island, Fildes peninsula in the Antarctic. Samples were taken during the deicing season in five sampling campaigns. From all the samples we were able to isolate denitrifying strains. A total of 199 bacterial isolates with the capacity to grow in anaerobic mineral media reducing nitrate at 4°C were obtained. The characterization of the isolates by 16S rRNA gene sequence analysis showed a high predominance of the genus Pseudomonas, followed by Janthinobacterium, Flavobacterium, Psychrobacter, and Yersinia. Other minor genera detected were Cryobacterium, Iodobacter, Kaistella, and Carnobacterium. The capacity to denitrify was not previously described for most of the bacteria related to our isolates and in many of them denitrifying genes were not present suggesting the presence of new genes in this extreme environment. Our work demonstrates the ubiquity of denitrification in the Maritime Antarctica and gives important information linking denitrification at cold temperature with taxa in an unequivocal way.
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Affiliation(s)
- Angela Cabezas
- Instituto Tecnológico Regional Centro Sur, Universidad Tecnológica, Durazno, Uruguay
| | - Gastón Azziz
- Laboratorio de Microbiología, Departamento de biología, Facultad de Agronomía, UdelaR, Montevideo, Uruguay
| | - Patricia Bovio-Winkler
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Laura Fuentes
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Lucía Braga
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Jorge Wenzel
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Silvia Sabaris
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Silvana Tarlera
- Laboratorio de Ecología Microbiana Medioambiental, Departamento Biociencias, Facultad de Química, Montevideo, Uruguay
| | - Claudia Etchebehere
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
- *Correspondence: Claudia Etchebehere,
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Kabaivanova L, Hubenov V, Dimitrova L, Simeonov I, Wang H, Petrova P. Archaeal and Bacterial Content in a Two-Stage Anaerobic System for Efficient Energy Production from Agricultural Wastes. Molecules 2022; 27:1512. [PMID: 35268611 PMCID: PMC8911581 DOI: 10.3390/molecules27051512] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 12/22/2022] Open
Abstract
Anaerobic digestion (AD) is a microbially-driven process enabling energy production. Microorganisms are the core of anaerobic digesters and play an important role in the succession of hydrolysis, acidogenesis, acetogenesis, and methanogenesis processes. The diversity of participating microbial communities can provide new information on digester performance for biomass valorization and biofuel production. In this study anaerobic systems were used, operating under mesophilic conditions that realized biodegradation processes of waste wheat straw pretreated with NaOH-a renewable source for hydrogen and methane production. These processes could be managed and optimized for hydrogen and methane separately but combining them in a two-stage system can lead to higher yields and a positive energy balance. The aim of the study was to depict a process of biohydrogen production from lignocellulosic waste followed by a second one leading to the production of biomethane. Archaeal and bacterial consortia in a two-stage system operating with wheat straw were identified for the first time and the role of the most important representatives was elucidated. The mixed cultures were identified by the molecular-biological methods of metagenomics. The results showed that biohydrogen generation is most probably due to the presence of Proteiniphilum saccharofermentans, which was 28.2% to 45.4% of the microbial community in the first and the second bioreactor, respectively. Archaeal representatives belonging to Methanobacterium formicicum (0.71% of the community), Methanosarcina spelaei (0.03%), Methanothrix soehngenii (0.012%), and Methanobacterium beijingense (0.01%) were proven in the methane-generating reactor. The correlation between substrate degradation and biogas accumulation was calculated, together with the profile of fatty acids as intermediates produced during the processes. The hydrogen concentration in the biogas reached 14.43%, and the Methane concentration was 69%. Calculations of the energy yield during the two-stage process showed 1195.89 kWh·t-1 compared to a 361.62 kWh·t-1 cumulative yield of energy carrier for a one-stage process.
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Affiliation(s)
- Lyudmila Kabaivanova
- Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.H.); (L.D.); (I.S.)
| | - Venelin Hubenov
- Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.H.); (L.D.); (I.S.)
| | - Lyudmila Dimitrova
- Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.H.); (L.D.); (I.S.)
| | - Ivan Simeonov
- Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.H.); (L.D.); (I.S.)
| | - Haoping Wang
- French-Chinese Laboratory LaFCAS, School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China;
| | - Penka Petrova
- Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.H.); (L.D.); (I.S.)
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Fuentes L, Palomo-Briones R, de Jesús Montoya-Rosales J, Braga L, Castelló E, Vesga A, Tapia-Venegas E, Razo-Flores E, Ecthebehere C. Knowing the enemy: homoacetogens in hydrogen production reactors. Appl Microbiol Biotechnol 2021; 105:8989-9002. [PMID: 34716461 DOI: 10.1007/s00253-021-11656-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/17/2021] [Accepted: 10/18/2021] [Indexed: 11/29/2022]
Abstract
One of the bottlenecks of the hydrogen production by dark fermentation is the low yields obtained because of the homoacetogenesis persistence, a metabolic pathway where H2 and CO2 are consumed to produce acetate. The central reactions of H2 production and homoacetogenesis are catalyzed by enzyme hydrogenase and the formyltetrahydrofolate synthetase, respectively. In this work, genes encoding for the formyltetrahydrofolate synthetase (fthfs) and hydrogenase (hydA) were used to investigate the diversity of homoacetogens as well as their phylogenetic relationships through quantitative PCR (qPCR) and next-generation amplicon sequencing. A total of 70 samples from 19 different H2-producing bioreactors with different configurations and operating conditions were analyzed. Quantification through qPCR showed that the abundance of fthfs and hydA was strongly associated with the type of substrate, organic loading rate, and H2 production performance. In particular, fthfs sequencing revealed that homoacetogens diversity was low with one or two dominant homoacetogens in each sample. Clostridium carboxivorans was detected in the reactors fed with agave hydrolisates; Acetobacterium woodii dominated in systems fed with glucose; Blautia coccoides and unclassified Sporoanaerobacter species were present in reactors fed with cheese whey; finally, Eubacterium limosum and Selenomonas sp. were co-dominant in reactors fed with glycerol. Altogether, quantification and sequencing analysis revealed that the occurrence of homoacetogenesis could take place due to (1) metabolic changes of H2-producing bacteria towards homoacetogenesis or (2) the displacement of H2-producing bacteria by homoacetogens. Overall, it was demonstrated that the fthfs gene was a suitable marker to investigate homoacetogens in H2-producing reactors. KEY POINTS: • qPCR and sequencing analysis revealed two homoacetogenesis phenomena. • fthfs gene was a suitable marker to investigate homoacetogens in H2 reactors.
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Affiliation(s)
- Laura Fuentes
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica Y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia, 3318, Montevideo, Uruguay
| | - 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, México
| | - José de Jesús Montoya-Rosales
- 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, México
| | - Lucía Braga
- Laboratorio Bioprocesos Ambientales, Facultad de Ingeniería, Instituto de Ingeniería Química, Universidad de La República, Herrera Y Reissig, 565, Montevideo, Uruguay
| | - Elena Castelló
- Laboratorio Bioprocesos Ambientales, Facultad de Ingeniería, Instituto de Ingeniería Química, Universidad de La República, Herrera Y Reissig, 565, Montevideo, Uruguay
| | - Alejandra Vesga
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, 2085, Valparaíso, Av. Brasil, Chile
| | - Estela Tapia-Venegas
- Departamento de Medio Ambiente, Facultad de Ingeniería, Universidad de Playa Ancha Av, Leopoldo Carvallo 270, Valparaíso, Chile
| | - 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, México
| | - Claudia Ecthebehere
- Laboratorio de Ecología Microbiana, Departamento de Bioquímica Y Genómica Microbiana, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia, 3318, Montevideo, Uruguay.
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4
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Han R, Liu L, Meng Y, Han H, Xiong R, Li Y, Chen L. Archaeal and bacterial community structures of rural household biogas digesters with different raw materials in Qinghai Plateau. Biotechnol Lett 2021; 43:1337-1348. [PMID: 33811593 DOI: 10.1007/s10529-021-03105-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/10/2021] [Indexed: 10/21/2022]
Abstract
The present study aims to investigate microbial community structures household biogas digesters with different raw materials in Qinghai Plateau rural. High-throughput 16S rRNA gene sequencing analysis revealed that Firmicutes, Bacteroidetes, and Proteobacteria are the most abundant bacterial phyla (64.08%). Prevotella group 7 was the most abundant genus in digester YL9 and YL10 (69.72% and 26.96%, respectively) using vegetable waste raw materials. Trichococcus exhibited the highest abundance (14.55%) in YL1 digester using sheep and pig manure. Clostridium sensu stricto 1 (13.89%) and Synergistaceae_uncultured (15.52%) comprised the highest abundances in digester YL5 with mixed raw materials (i.e., dairy manure, sheep manure, and human feces). In addition, Proteiniphilum and Pseudomonas exhibited the highest abundances among bacterial genera in YL4 digester using pig manure. Methanomicrobiales was the most dominant archaeal communities, ranging from 13.35% to 81.34% in abundance. Methanocorpusculum exhibited dominant abundances in all digesters using various raw materials. Methanogenium was the most abundant archaeal genera in YL4 and YL6 digesters, which consume pig manure as primary raw material. In addition, Methanosarcina and Methanosaeta exhibited the highest abundances in digester YL1 (55.03%) and YL9 (51.40%), respectively. Moreover, fermentation temperatures and pH both contributed to the archaeal and bacterial community structures in all the investigated digesters. Specially, fermentation temperature showed positive correlation with the abundances of Synergistaceae_uncultured, Methanogenium, and Methanosaeta, and pH was positively correlated with the abundances of Prevotella group 7 and Methanosarcina abundances.
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Affiliation(s)
- Rui Han
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Li Liu
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Yan Meng
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Hairong Han
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Rongbo Xiong
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China
| | - Yi Li
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China.
| | - Laisheng Chen
- Qinghai Key Laboratory of Vegetable Genetics and Physiology, Academy of Agriculture and Forestry, Qinghai University, Ningda Road 253, Xining, 810016, Qinghai, China.
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5
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Fontana A, Soldano M, Bellassi P, Fabbri C, Gallucci F, Morelli L, Cappa F. Dynamics of Clostridium genus and hard-cheese spoiling Clostridium species in anaerobic digesters treating agricultural biomass. AMB Express 2020; 10:102. [PMID: 32488433 PMCID: PMC7266885 DOI: 10.1186/s13568-020-01040-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/26/2020] [Indexed: 11/29/2022] Open
Abstract
Biogas plants are a widespread renewable energy technology. However, the use of digestate for agronomic purposes has often been a matter of concern. It is controversial whether biogas plants might harbor some pathogenic clostridial species, which represent a biological risk. Moreover, the inhabitance of Clostridium hard-cheese spoiling species in anaerobic digesters can be problematic for hard-cheese manufacturing industries, due to the issue of cheese blowing defects. This study investigated the effect of mesophilic anaerobic digestion processes on the Clostridium consortia distribution over time. Specifically, three lab-scale CSTRs treating agricultural biomass were characterized by considering both the whole microbial community and the cultivable clostridial spores. It is assessed an overall reduction of the Clostridium genus during the anaerobic digestion process. Moreover, it was evidenced a slight, but steady decrease of the cultivable clostridial spores, mainly represented by two pathogenic species, C. perfringens and C. bifermentans, and one hard-cheese spoiling species, C. butyricum. Thus, it is revealed an overall reduction of the clostridial population abundance after the mesophilic anaerobic digestion treatment of agricultural biomass.
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Affiliation(s)
- Alessandra Fontana
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122, Piacenza, Italy.
| | - Mariangela Soldano
- Centro Ricerche Produzioni Animali - C.R.P.A. S.p.A., Viale Timavo, 43/2, 42121, Reggio Emilia, Italy
| | - Paolo Bellassi
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122, Piacenza, Italy
| | - Claudio Fabbri
- Centro Ricerche Produzioni Animali - C.R.P.A. S.p.A., Viale Timavo, 43/2, 42121, Reggio Emilia, Italy
| | - Francesco Gallucci
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - CREA, Via della Pascolare, 16, Monterotondo, 00015, Rome, Italy
| | - Lorenzo Morelli
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122, Piacenza, Italy
- Centro Ricerche Biotecnologiche, Università Cattolica del Sacro Cuore, Via Milano, 24, 26100, Cremona, Italy
| | - Fabrizio Cappa
- Department for Sustainable Food Process - DiSTAS, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122, Piacenza, Italy
- Centro Ricerche Biotecnologiche, Università Cattolica del Sacro Cuore, Via Milano, 24, 26100, Cremona, Italy
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Lavergne C, Bovio-Winkler P, Etchebehere C, García-Gen S. Towards centralized biogas plants: Co-digestion of sewage sludge and pig manure maintains process performance and active microbiome diversity. BIORESOURCE TECHNOLOGY 2020; 297:122442. [PMID: 31780241 DOI: 10.1016/j.biortech.2019.122442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
The aim of this study is to assess the performance of anaerobic digestion against co-digestion systems during the start-up stages based on key process parameters and biological indicators. Two parallel experiments treating sewage sludge alone or co-digested with low concentration of pig manure (8% vol., 2-3% in COD basis) were carried out in two lab-scale CSTR at mesophilic conditions. Same inoculant and organic loading rate sequences were applied for two consecutive runs of 79 and 90 days. According to the removal efficiencies achieved, no significant differences were encountered amongst mono-digestion and co-digestion. This observation was reinforced with the analysis of the total/active microbiome, sequencing 16S rRNA genes and transcripts. The addition of a co-substrate at low concentration had a negligible effect on the total/active microbial communities; they evolved following the same pattern. This might be an advantage in order to upgrade existing wastewater treatment plants to become centralized biogas facilities.
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Affiliation(s)
- Céline Lavergne
- Escuela Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2085, 2340950 Valparaíso, Chile
| | - Patricia Bovio-Winkler
- Microbial Ecology Laboratory, Department of Microbial Biochemistry and Genomic, Biological Research Institute "Clemente Estable", Avenida Italia 3318, 11600 Montevideo, Uruguay
| | - Claudia Etchebehere
- Microbial Ecology Laboratory, Department of Microbial Biochemistry and Genomic, Biological Research Institute "Clemente Estable", Avenida Italia 3318, 11600 Montevideo, Uruguay
| | - Santiago García-Gen
- Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Avenida España 1680, 2390123 Valparaíso, Chile.
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Fernandez M, Pereira PP, Agostini E, González PS. How the bacterial community of a tannery effluent responds to bioaugmentation with the consortium SFC 500-1. Impact of environmental variables. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 247:46-56. [PMID: 31229785 DOI: 10.1016/j.jenvman.2019.06.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/17/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Bioaugmentation with the consortium SFC 500-1 is a promising alternative to remediate wastewaters, such as tannery effluents. With the aim of assessing the changes produced in response to bioaugmentation, bacterial 16S rDNA genes were sequenced with Illumina MiSeq Platform. Additionally, bacterial and fungal groups were analyzed through standard culture dependent methods. The impact of diverse physico-chemical and microbiological parameters on the prokaryotic diversity was also evaluated throughout. Bacteroidetes, Firmicutes and Proteobacteria, represented together up to 91% of the total number of sequences obtained from the tannery effluent. Diversity decreased immediately after inoculation, due to an increase in the representation of the taxa to which the added consortium belongs. However, bioaugmentation produced no greater variations since only a 10% of unique operational taxonomic units were found in the inoculated treatment. An increase in the abundance of Myroides and a reduction in the representation of Proteiniclasticum and Halomonas were major observed variations. On the other hand, pH and dissolved oxygen constituted main environmental factors affecting the structure of the prokaryotic communities. In all treatments yeasts increased over time, to the detriment of filamentous fungi. Together, data from this report may contribute to the development of improved bioremediation strategies of industrial wastewaters.
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Affiliation(s)
- Marilina Fernandez
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina; CONICET, UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina.
| | - Paola P Pereira
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina; CONICET, UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina.
| | - Elizabeth Agostini
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina; CONICET, UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina.
| | - Paola S González
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina; CONICET, UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina.
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8
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Fuentes L, Braga L, Castelló E, Etchebehere C. Work scheme to isolate the different micro-organisms found in hydrogen-producing reactors: a study of effectiveness by pyrosequencing analysis. J Appl Microbiol 2018; 125:96-110. [DOI: 10.1111/jam.13763] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/30/2018] [Accepted: 03/05/2018] [Indexed: 01/08/2023]
Affiliation(s)
- L. Fuentes
- Microbial Ecology Laboratory; Microbial Biochemistry and Genomics Department; Biological Research Institute “Clemente Estable”; Montevideo Uruguay
| | - L. Braga
- Microbial Ecology Laboratory; Microbial Biochemistry and Genomics Department; Biological Research Institute “Clemente Estable”; Montevideo Uruguay
- BioProA Laboratory; Faculty of Engineering; University of the Republic; Montevideo Uruguay
| | - E. Castelló
- BioProA Laboratory; Faculty of Engineering; University of the Republic; Montevideo Uruguay
| | - C. Etchebehere
- Microbial Ecology Laboratory; Microbial Biochemistry and Genomics Department; Biological Research Institute “Clemente Estable”; Montevideo Uruguay
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9
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Chiariotti A, Crisà A. Bio-Hydrogen Production From Buffalo Waste With Rumen Inoculum and Metagenomic Characterization of Bacterial and Archaeal Community. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2018. [DOI: 10.3389/fsufs.2018.00013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lovato G, Lazaro C, Zaiat M, Ratusznei S, Rodrigues J. Biohydrogen production by co-digesting whey and glycerin in an AnSBBR: Performance optimization, metabolic pathway kinetic modeling and phylogenetic characterization. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.09.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Microbial fuel cell coupled to biohydrogen reactor: a feasible technology to increase energy yield from cheese whey. Bioprocess Biosyst Eng 2017; 40:807-819. [DOI: 10.1007/s00449-017-1746-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/25/2017] [Indexed: 11/25/2022]
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12
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Lima DMF, Lazaro CZ, Rodrigues JAD, Ratusznei SM, Zaiat M. Optimization performance of an AnSBBR applied to biohydrogen production treating whey. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 169:191-201. [PMID: 26751813 DOI: 10.1016/j.jenvman.2015.12.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/20/2015] [Accepted: 12/24/2015] [Indexed: 06/05/2023]
Abstract
The present study investigated the influence of the influent concentration of substrate, feeding time and temperature on the production of biohydrogen from cheese whey in an AnSBBR with liquid phase recirculation. The highest hydrogen yield (0.80 molH2.molLactose(-1)) and productivity (660 mLH2 L(-1) d(-1)) were achieved for influent concentrations of 5400 mgDQO L(-1). No significant difference was noted in the biological hydrogen production for the feeding time conditions analyzed. The lowest temperature tested (15 °C) promoted the highest hydrogen yield and productivity (1.12 molH2 molLactose(-1) and 1080 mLH2 L(-1) d(-1)), and for the highest temperature (45 °C), hydrogen production did not occur. The indicator values for the hydrogen production obtained with this configuration were higher than those obtained in other studies using traditional configurations such as UASBr and CSTR. A phylogenetic analysis showed that the majority of the analyzed clones were similar to Clostridium. In addition, clones phylogenetically similar to the Lactobacilaceae family, notably Lactobacillus rhamnosus, and clones with similar sequences to Acetobacter indonesiensis were observed in small proportion in the reactor.
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Affiliation(s)
- D M F Lima
- Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos, SP, Brazil
| | - C Z Lazaro
- Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos, SP, Brazil
| | - J A D Rodrigues
- Escola de Engenharia Mauá (EEM), Instituto Mauá de Tecnologia (IMT), Praça Mauá 1, CEP 09.580-900, São Caetano do Sul, SP, Brazil.
| | - S M Ratusznei
- Escola de Engenharia Mauá (EEM), Instituto Mauá de Tecnologia (IMT), Praça Mauá 1, CEP 09.580-900, São Caetano do Sul, SP, Brazil
| | - M Zaiat
- Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos, SP, Brazil
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Méndez-Contreras JM, López-Escobar LA, Martínez-Hernández S, Cantú-Lozano D, Ortiz-Ceballos AI. Rheological behavior of physicochemical sludges during methanogenesis suppression and hydrogen production at different organic loading rates. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2016; 51:515-522. [PMID: 26943338 DOI: 10.1080/10934529.2016.1141617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study investigated the rheological behavior of raw physicochemical sludges and sludges that were digested at different organic loading rates (OLRs) (1, 5, 10 and 15 gVS L(-1) d(-1)) during methanogenesis suppression to produce hydrogen anaerobically. The Herschel-Bulkley model was used to describe the rheology of these sludges with specific properties. The results indicate that the Herschel-Bulkley model adequately described the rheology (τ0 ≠ 0) of this type of fluids (R(2) > 0.98). In addition, the raw physicochemical sludges and those that were digested at different OLRs had dilatant behaviors (n > 1), which increased with increasing OLR. These results identified the apparent viscosity, yield stress, pH and OLR conditions that allow for the production and suppression of methane, as well as the conditions that guarantee the production of hydrogen.
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Affiliation(s)
| | - Luis A López-Escobar
- b Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana Xalapa , Ver. México
| | - Sergio Martínez-Hernández
- b Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana Xalapa , Ver. México
| | - Denis Cantú-Lozano
- a División de Estudios de Posgrado e Investigación, Instituto Tecnológico de Orizaba , Orizaba , Ver. México
| | - Angel I Ortiz-Ceballos
- b Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana Xalapa , Ver. México
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Microbial communities from 20 different hydrogen-producing reactors studied by 454 pyrosequencing. Appl Microbiol Biotechnol 2016; 100:3371-84. [PMID: 26825820 DOI: 10.1007/s00253-016-7325-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/12/2016] [Accepted: 01/14/2016] [Indexed: 01/10/2023]
Abstract
To provide new insight into the dark fermentation process, a multi-lateral study was performed to study the microbiology of 20 different lab-scale bioreactors operated in four different countries (Brazil, Chile, Mexico, and Uruguay). Samples (29) were collected from bioreactors with different configurations, operation conditions, and performances. The microbial communities were analyzed using 16S rRNA genes 454 pyrosequencing. The results showed notably uneven communities with a high predominance of a particular genus. The phylum Firmicutes predominated in most of the samples, but the phyla Thermotogae or Proteobacteria dominated in a few samples. Genera from three physiological groups were detected: high-yield hydrogen producers (Clostridium, Kosmotoga, Enterobacter), fermenters with low-hydrogen yield (mostly from Veillonelaceae), and competitors (Lactobacillus). Inocula, reactor configurations, and substrates influence the microbial communities. This is the first joint effort that evaluates hydrogen-producing reactors and operational conditions from different countries and contributes to understand the dark fermentation process.
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15
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Elsamadony M, Tawfik A. Dry anaerobic co-digestion of organic fraction of municipal waste with paperboard mill sludge and gelatin solid waste for enhancement of hydrogen production. BIORESOURCE TECHNOLOGY 2015; 191:157-165. [PMID: 25989091 DOI: 10.1016/j.biortech.2015.05.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/07/2015] [Accepted: 05/08/2015] [Indexed: 06/04/2023]
Abstract
The aim of this study is to investigate the bio-H2 production via dry anaerobic co-fermentation of organic fraction of municipal solid waste (OFMSW) with protein and calcium-rich substrates such as gelatin solid waste (GSW) and paperboard mill sludge (PMS). Co-fermentation of OFMSW/GSW/PMS significantly enhanced the H2 production (HP) and H2 yield (HY). The maximum HP of 1082.5±91.4 mL and HY of 144.9±9.8 mL/gVSremoved were achieved at a volumetric ratio of 70% OFMSW:20% GSW:10% PMS. COD, carbohydrate, protein and lipids conversion efficiencies were 60.9±4.4%, 71.4±3.5%, 22.6±2.3% and 20.5±1.8% respectively. Co-fermentation process reduced the particle size distribution which is favorably utilized by hydrogen producing bacteria. The mean particle size diameters for feedstock and the digestate were 939.3 and 115.2μm, respectively with reduction value of 8.15-fold in the mixtures. The volumetric H2 production increased from 4.5±0.3 to 7.2±0.6 L(H2)/L(substrate) at increasing Ca(+2) concentrations from 1.8±0.1 to 6.3±0.5 g/L respectively.
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Affiliation(s)
- M Elsamadony
- Environmental Engineering Department, Egypt-Japan University of Science and Technology (E-Just), New Borg El Arab City, 21934 Alexandria, Egypt.
| | - A Tawfik
- Environmental Engineering Department, Egypt-Japan University of Science and Technology (E-Just), New Borg El Arab City, 21934 Alexandria, Egypt
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16
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Desta AF, Assefa F, Leta S, Stomeo F, Wamalwa M, Njahira M, Appolinaire D. Microbial community structure and diversity in an integrated system of anaerobic-aerobic reactors and a constructed wetland for the treatment of tannery wastewater in Modjo, Ethiopia. PLoS One 2014; 9:e115576. [PMID: 25541981 PMCID: PMC4277355 DOI: 10.1371/journal.pone.0115576] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 11/29/2014] [Indexed: 11/18/2022] Open
Abstract
A culture-independent approach was used to elucidate the microbial diversity and structure in the anaerobic-aerobic reactors integrated with a constructed wetland for the treatment of tannery wastewater in Modjo town, Ethiopia. The system has been running with removal efficiencies ranging from 94%-96% for COD, 91%-100% for SO4(2-) and S(2-), 92%-94% for BOD, 56%-82% for total Nitrogen and 2%-90% for NH3-N. 16S rRNA gene clone libraries were constructed and microbial community assemblies were determined by analysis of a total of 801 unique clone sequences from all the sites. Operational Taxonomic Unit (OTU)--based analysis of the sequences revealed highly diverse communities in each of the reactors and the constructed wetland. A total of 32 phylotypes were identified with the dominant members affiliated to Clostridia (33%), Betaproteobacteria (10%), Bacteroidia (10%), Deltaproteobacteria (9%) and Gammaproteobacteria (6%). Sequences affiliated to the class Clostridia were the most abundant across all sites. The 801 sequences were assigned to 255 OTUs, of which 3 OTUs were shared among the clone libraries from all sites. The shared OTUs comprised 80 sequences belonging to Clostridiales Family XIII Incertae Sedis, Bacteroidetes and unclassified bacterial group. Significantly different communities were harbored by the anaerobic, aerobic and rhizosphere sites of the constructed wetland. Numerous representative genera of the dominant bacterial classes obtained from the different sample sites of the integrated system have been implicated in the removal of various carbon- containing pollutants of natural and synthetic origins. To our knowledge, this is the first report of microbial community structure in tannery wastewater treatment plant from Ethiopia.
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Affiliation(s)
- Adey Feleke Desta
- Institute of Biotechnology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Fassil Assefa
- Institute of Biotechnology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Seyoum Leta
- Centre for Environmental Science, College of Natural Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Francesca Stomeo
- Biosciences eastern and central Africa- International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya
| | - Mark Wamalwa
- Biosciences eastern and central Africa- International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya
| | - Moses Njahira
- Biosciences eastern and central Africa- International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya
| | - Djikeng Appolinaire
- Biosciences eastern and central Africa- International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya
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López-Escobar LA, Martínez-Hernández S, Corte-Cano G, Méndez-Contreras JM. Influence of organic loading rate on methane production in a CSTR from physicochemical sludge generated in a poultry slaughterhouse. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2014; 49:1710-1717. [PMID: 25320858 DOI: 10.1080/10934529.2014.951258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The influence of the increase of the organic loading rate (OLR) on methane production in a continuous stirred-tank reactor (CSTR) from physicochemical sludge generated in a poultry slaughterhouse was evaluated. Total solid (TS) to obtain OLR of 1, 5, 10 and 15 g VS L(-1) day(-1), with hydraulic retention times of 29, 6, 6 and 4, respectively, were conditioned. The results showed a decrease in pH levels and an increase in the theoretical volatile fatty acids (VFA). While the yield of methane production decreased from 0.48 to 0.10 LCH4/g VSremoved, respectively, the OLR-10 managed on average 38% removal of volatile solids (VS) and a yield biogas production of 0.81 Lbiogas g(-1) VSremoved and 1.35 L day(-1). This suggests that the OLR increases in an anaerobic system from physicochemical sludge only inhibits the methanogenic metabolism, because there is still substrate consumption and biogas production.
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Affiliation(s)
- Luis A López-Escobar
- a Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana , Xalapa , Veracruz , México
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