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El-Kady MM, Ansari I, Arora C, Rai N, Soni S, Kumar Verma D, Singh P, El Din Mahmoud A. Nanomaterials: A Comprehensive Review of Applications, Toxicity, Impact, and Fate to Environment. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Ottoni JR, Bernal SPF, Marteres TJ, Luiz FN, Dos Santos VP, Mari ÂG, Somer JG, de Oliveira VM, Passarini MRZ. Cultured and uncultured microbial community associated with biogas production in anaerobic digestion processes. Arch Microbiol 2022; 204:340. [PMID: 35590017 DOI: 10.1007/s00203-022-02819-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/07/2022] [Accepted: 02/25/2022] [Indexed: 11/02/2022]
Abstract
The search for sustainable development has increased interest in the improvement of technologies that use renewable energy sources. One of the alternatives in the production of renewable energy comes from the use of waste including urban solids, animal excrement from livestock, and biomass residues from agro-industrial plants. These materials may be used in the production of biogas, making its production highly sustainable and environmentally friendly. The present study aimed to evaluate the cultivated and uncultivated microbial community from a substrate (starter) used as an adapter for biogas production in anaerobic digestion processes. 16S rDNA metabarcoding revealed the domain of bacteria belonging to the phyla Firmicutes, Bacteroidota, Chloroflexi and Synergistota. The methanogenic group was represented by the phyla Halobacterota and Euryarchaeota. Through 16S rRNA sequencing of isolates recovered from the starter culture, the genera Rhodococcus (Actinobacteria phylum), Vagococcus, Lysinibacillus, Niallia, Priestia, Robertmurraya, Proteiniclasticum (Firmicutes phylum), and Luteimonas (Proteobacteria phylum) were identified, genera that were not observed in the metabarcoding data. The volatile solids, volatile organic acids, and total inorganic carbon reached 659.10 g kg-1, 717.70 g kg-1, 70,005.0 g kg-1, respectively. The cultured groups are involved in the metabolism of sugars and other compounds derived from lignocellulosic material, as well as in anaerobic methane production processes. The results demonstrate that culture-dependent approaches, such as isolation and sequencing, and culture-independent studies, such as the Metabarcoding approach, are complementary methodologies that, when integrated provide robust and comprehensive information about the microbial communities involved in processes of the production of biogas in anaerobic digestion processes.
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Affiliation(s)
- Júlia Ronzella Ottoni
- Laboratório de Biotecnologia Ambiental, Universidade Federal da Integração Latino-Americana - Unila., Jd Universitário, Av. Tarquínio Joslin dos Santos, 1000, Foz do Iguaçu, PR, 85870-650, Brazil
| | - Suzan Prado Fernandes Bernal
- Laboratório de Biotecnologia Ambiental, Universidade Federal da Integração Latino-Americana - Unila., Jd Universitário, Av. Tarquínio Joslin dos Santos, 1000, Foz do Iguaçu, PR, 85870-650, Brazil
| | - Tiago Joelzer Marteres
- Centro Internacional de Energias Renováveis - Biogás (CIBiogás-ER), Av. Tancredo Neves, 6731, Itaipu, Foz do Iguaçu, PR, Brazil
| | - Franciele Natividade Luiz
- Centro Internacional de Energias Renováveis - Biogás (CIBiogás-ER), Av. Tancredo Neves, 6731, Itaipu, Foz do Iguaçu, PR, Brazil
| | - Viviane Piccin Dos Santos
- CPQBA/UNICAMP - Divisão de Recursos Microbianos, Campinas, Av. Alexandre Cazelatto, 999. Betel, Paulínia, SP, Brazil
| | - Ângelo Gabriel Mari
- Centro Internacional de Energias Renováveis - Biogás (CIBiogás-ER), Av. Tancredo Neves, 6731, Itaipu, Foz do Iguaçu, PR, Brazil
| | - Juliana Gaio Somer
- Centro Internacional de Energias Renováveis - Biogás (CIBiogás-ER), Av. Tancredo Neves, 6731, Itaipu, Foz do Iguaçu, PR, Brazil
| | - Valéria Maia de Oliveira
- CPQBA/UNICAMP - Divisão de Recursos Microbianos, Campinas, Av. Alexandre Cazelatto, 999. Betel, Paulínia, SP, Brazil
| | - Michel Rodrigo Zambrano Passarini
- Laboratório de Biotecnologia Ambiental, Universidade Federal da Integração Latino-Americana - Unila., Jd Universitário, Av. Tarquínio Joslin dos Santos, 1000, Foz do Iguaçu, PR, 85870-650, Brazil.
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Prolonged acetogenic phase and biological succession during anaerobic digestion using swine manure. Folia Microbiol (Praha) 2022; 67:733-745. [PMID: 35460047 DOI: 10.1007/s12223-021-00937-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 11/28/2021] [Indexed: 11/04/2022]
Abstract
In recent years, global warming and the limitation of fossil fuels have been causing the governments of different countries to think about the search for more sustainable fuel sources. Biomethane (CH4) has gained increasing attention in recent years as an alternative option for a sustainable source of energy. Biogas is generated during the anaerobic digestion of organic materials by the metabolism of complex microbial communities in the substrates that make up this digestion. The microbial community evaluation using 16S rDNA metabarcoding in a bench covered pond bioreactor using swine effluent revealed the dominant bacteria belonging to Firmicutes, Proteobacteria, and Bacteroidetes phyla. The methanogenic group was represented by the Euryarchaeota phylum. It was possible to observe that the relative frequency of the methanogenic archaea community decreased with the anaerobic digestion, indicating a biological succession stage. On the other hand, there was a predominant acetogenic diversity in this final stage. These data showed stabilization of biomethane production, although the microbial community of methanogens has drastically reduced in the late process.
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Ohnmacht B, Lemmer A, Oechsner H, Kress P. Demand-oriented biogas production and biogas storage in digestate by flexibly feeding a full-scale biogas plant. BIORESOURCE TECHNOLOGY 2021; 332:125099. [PMID: 33862386 DOI: 10.1016/j.biortech.2021.125099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/24/2021] [Accepted: 03/26/2021] [Indexed: 06/12/2023]
Abstract
This work studied the demand-oriented biogas production and the biogas storage in digestate by flexibly feeding a full-scale research biogas plant. The investigated continuous stirred tank reactor (CSTR) was equipped with a fast-moving submersible motor mixer and a slow-moving inclined shaft agitator. A model for the biogas storage in digestate was introduced and tested in full scale using temporally highly resolved volume flow measurements. An increase in mixing time led to a faster biogas production: A two to five hours reduction of the time to reach the maximum biogas production after feeding occurred in our experiments. However, no influence of the rheology and of the mixing regime on the methane yield could be derived from the measurements. Further, a 30% reduction of the stored biogas in the digestate occurred when the viscosity was lowered by 66%. This knowledge can be used to enhance the existing biogas formation models.
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Affiliation(s)
- Benjamin Ohnmacht
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstr. 9, Stuttgart 70599, Germany.
| | - Andreas Lemmer
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstr. 9, Stuttgart 70599, Germany
| | - Hans Oechsner
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstr. 9, Stuttgart 70599, Germany
| | - Philipp Kress
- University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstr. 9, Stuttgart 70599, Germany
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Dehhaghi M, Tabatabaei M, Aghbashlo M, Kazemi Shariat Panahi H, Nizami AS. A state-of-the-art review on the application of nanomaterials for enhancing biogas production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 251:109597. [PMID: 31563049 DOI: 10.1016/j.jenvman.2019.109597] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 09/06/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
Anaerobic digestion (AD) of organic wastes is among the most promising approaches used for the simultaneous treatment of various waste streams, environment conservation, and renewable bioenergy generation (biomethane). Among the latest innovations investigated to enhance the overall performance of this process both qualitatively and quantitatively, the application of some nanoparticles (NPs) has attracted a great deal of attention. Typically, the NPs of potential benefit to the AD process could be divided into three groups: (i) zero-valent iron (ZVI) NPs, (ii) metallic and metal oxides NPs, and (iii) carbon-based NPs. The present review focuses on the latest findings reported on the application of these NPs in AD process and presents their various mechanisms of action leading to higher or lower biogas production rates. Among the NPs studies, ZVI NPs could be regarded as the most promising nanomaterials for enhancing biogas production through stabilizing the AD process as well as by stimulating the growth of beneficial microorganisms to the AD process and the enzymes involved. Future research should focus on various attributes of NPs when used as additives in biogas production, including facilitating mixing and pumping operations, enriching the population and diversity of beneficial microorganisms for AD, improving biogas release, and inducing the production and activity of AD-related enzymes. The higher volume of methane-enriched biogas would be translated into higher returns on investment and could therefore, result in further growth of the biogas production industry. Nevertheless, efforts should be devoted to decreasing the price of NPs so that the enhanced biogas and methane production (by over 90%, compared to control) would be more economically justified, facilitating the large-scale application of these compounds. In addition to economic considerations, environmental issues are also regarded as major constraints which should be addressed prior to widespread implementation of NP-augmented AD processes. More specifically, the fate of NPs augmented in AD process should be scrutinized to ensure maximal beneficial impacts while adverse environmental/health consequences are minimized.
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Affiliation(s)
- Mona Dehhaghi
- Department of Microbial Biotechnology, School of Biology and Centre of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran; Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia
| | - Meisam Tabatabaei
- Faculty of Plantation and Agrotechnology, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor, Malaysia; Microbial Biotechnology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran; Biofuel Research Team (BRTeam), Karaj, Iran.
| | - Mortaza Aghbashlo
- Department of Mechanical Engineering of Agricultural Machinery, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
| | - Hamed Kazemi Shariat Panahi
- Department of Microbial Biotechnology, School of Biology and Centre of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran; Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia
| | - Abdul-Sattar Nizami
- Center of Excellence in Environmental Studies, King Abdulaziz University, Saudi Arabia
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