Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter
Organic wastes are considered the most significant components of urban solid waste, negatively affecting the environment. It is essential to use renewable resources to minimize environmental risks. Composting is one of the most sustainable methods for managing organic waste and involves transforming...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-10-01
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| Series: | Frontiers in Sustainable Food Systems |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fsufs.2022.960196/full |
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| author | Suelen S. Gaspar Suelen S. Gaspar Lucas L. R. Assis Carla A. Carvalho Victor Hugo Buttrós Victor Hugo Buttrós Gustavo Magno dos Reis Ferreira Gustavo Magno dos Reis Ferreira Rosane F. Schwan Moacir Pasqual Filipe Almendagna Rodrigues Everlon Cid Rigobelo Rafael Peron Castro Joyce Dória |
| author_facet | Suelen S. Gaspar Suelen S. Gaspar Lucas L. R. Assis Carla A. Carvalho Victor Hugo Buttrós Victor Hugo Buttrós Gustavo Magno dos Reis Ferreira Gustavo Magno dos Reis Ferreira Rosane F. Schwan Moacir Pasqual Filipe Almendagna Rodrigues Everlon Cid Rigobelo Rafael Peron Castro Joyce Dória |
| author_sort | Suelen S. Gaspar |
| collection | DOAJ |
| description | Organic wastes are considered the most significant components of urban solid waste, negatively affecting the environment. It is essential to use renewable resources to minimize environmental risks. Composting is one of the most sustainable methods for managing organic waste and involves transforming organic matter into a stable and nutrient-enriched biofertilizer, through the succession of microbial populations into a stabilized product. This work aimed to evaluate the efficiency of the new type of composter and the microbial and physiochemical dynamics during composting aiming to accelerate the degradation of organic waste and produce high-quality compost. Two inoculants were evaluated: (1) efficient microorganisms (EM); (2) commercial inoculum (CI), which were compared to a control treatment, without inoculation. Composting was performed by mixing organic waste from gardening with residues from the University's Restaurant (C/N ratio 30:1). The composting process was carried out in a 1 m3 composter with controlled temperature and aeration. The thermophilic phase for all treatments was reached on the second day. Mature compost was obtained after an average of 120 days, and composting in all treatments showed an increase in the availability of P and micronutrients. The new composter helped to accelerate the decomposition of residues, through the maintenance of adequate oxygen content and temperature control inside the cells, providing high metabolic activity of microorganisms, contributing to an increase in physicochemical characteristics, also reducing the composting time in both treatments. During composting, the bacteria and actinobacteria populations were higher than yeasts and filamentous fungi. The inoculated treatments presented advantages showing more significant mineralization of P-available and micronutrients such as Mn and Zn in terms of the quality of the final product in comparison to the control treatment. Finally, the new composter and the addition of inoculants contributed significantly to the efficiency of the process of composting organic waste. |
| first_indexed | 2024-04-13T18:53:16Z |
| format | Article |
| id | doaj.art-078900cd1b114c00adf849b4576b8855 |
| institution | Directory Open Access Journal |
| issn | 2571-581X |
| language | English |
| last_indexed | 2024-04-13T18:53:16Z |
| publishDate | 2022-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Sustainable Food Systems |
| spelling | doaj.art-078900cd1b114c00adf849b4576b88552022-12-22T02:34:20ZengFrontiers Media S.A.Frontiers in Sustainable Food Systems2571-581X2022-10-01610.3389/fsufs.2022.960196960196Dynamics of microbiota and physicochemical characterization of food waste in a new type of composterSuelen S. Gaspar0Suelen S. Gaspar1Lucas L. R. Assis2Carla A. Carvalho3Victor Hugo Buttrós4Victor Hugo Buttrós5Gustavo Magno dos Reis Ferreira6Gustavo Magno dos Reis Ferreira7Rosane F. Schwan8Moacir Pasqual9Filipe Almendagna Rodrigues10Everlon Cid Rigobelo11Rafael Peron Castro12Joyce Dória13Unit of Microbiology, Department of Biology, Federal University of Lavras, Lavras, BrazilCenter for Agricultural and Agro-Food Biotechnology of Alentejo (CEBAL), Beja, PortugalUnit of Microbiology, Department of Soil Science, Federal University of Lavras, Lavras, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilUnit of Microbiology, Department of Biology, Federal University of Lavras, Lavras, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilInstitute of Natural Resources, Federal University of Itajubá, Itajubá, BrazilUnit of Microbiology, Department of Biology, Federal University of Lavras, Lavras, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilDepartment of Agriculture, São Paulo State University, Jaboticabal, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilUnit of Tissue Culture, Department of Agriculture, Federal University of Lavras, Lavras, BrazilOrganic wastes are considered the most significant components of urban solid waste, negatively affecting the environment. It is essential to use renewable resources to minimize environmental risks. Composting is one of the most sustainable methods for managing organic waste and involves transforming organic matter into a stable and nutrient-enriched biofertilizer, through the succession of microbial populations into a stabilized product. This work aimed to evaluate the efficiency of the new type of composter and the microbial and physiochemical dynamics during composting aiming to accelerate the degradation of organic waste and produce high-quality compost. Two inoculants were evaluated: (1) efficient microorganisms (EM); (2) commercial inoculum (CI), which were compared to a control treatment, without inoculation. Composting was performed by mixing organic waste from gardening with residues from the University's Restaurant (C/N ratio 30:1). The composting process was carried out in a 1 m3 composter with controlled temperature and aeration. The thermophilic phase for all treatments was reached on the second day. Mature compost was obtained after an average of 120 days, and composting in all treatments showed an increase in the availability of P and micronutrients. The new composter helped to accelerate the decomposition of residues, through the maintenance of adequate oxygen content and temperature control inside the cells, providing high metabolic activity of microorganisms, contributing to an increase in physicochemical characteristics, also reducing the composting time in both treatments. During composting, the bacteria and actinobacteria populations were higher than yeasts and filamentous fungi. The inoculated treatments presented advantages showing more significant mineralization of P-available and micronutrients such as Mn and Zn in terms of the quality of the final product in comparison to the control treatment. Finally, the new composter and the addition of inoculants contributed significantly to the efficiency of the process of composting organic waste.https://www.frontiersin.org/articles/10.3389/fsufs.2022.960196/fullcompostinginoculantsmicroorganismsorganic mattersustainable methods |
| spellingShingle | Suelen S. Gaspar Suelen S. Gaspar Lucas L. R. Assis Carla A. Carvalho Victor Hugo Buttrós Victor Hugo Buttrós Gustavo Magno dos Reis Ferreira Gustavo Magno dos Reis Ferreira Rosane F. Schwan Moacir Pasqual Filipe Almendagna Rodrigues Everlon Cid Rigobelo Rafael Peron Castro Joyce Dória Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter Frontiers in Sustainable Food Systems composting inoculants microorganisms organic matter sustainable methods |
| title | Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter |
| title_full | Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter |
| title_fullStr | Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter |
| title_full_unstemmed | Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter |
| title_short | Dynamics of microbiota and physicochemical characterization of food waste in a new type of composter |
| title_sort | dynamics of microbiota and physicochemical characterization of food waste in a new type of composter |
| topic | composting inoculants microorganisms organic matter sustainable methods |
| url | https://www.frontiersin.org/articles/10.3389/fsufs.2022.960196/full |
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