Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion
Biodegradable organic waste offers significant opportunities for resource recovery within the frame of the circular economy. In this work, the effects of carbon-encapsulated iron nanoparticles and ozone pre-treatments in the mesophilic methanogenic stage of a temperature-phased an-aerobic digestion...
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MDPI AG
2024-10-01
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| Series: | Applied Sciences |
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| author | Encarnación Díaz Domínguez María Eugenia Ibañez López Jacek Mąkinia Francisco Jesús Fernández-Morales José Luis García Morales |
| author_facet | Encarnación Díaz Domínguez María Eugenia Ibañez López Jacek Mąkinia Francisco Jesús Fernández-Morales José Luis García Morales |
| author_sort | Encarnación Díaz Domínguez |
| collection | DOAJ |
| description | Biodegradable organic waste offers significant opportunities for resource recovery within the frame of the circular economy. In this work, the effects of carbon-encapsulated iron nanoparticles and ozone pre-treatments in the mesophilic methanogenic stage of a temperature-phased an-aerobic digestion have been studied using biochemical methanogenic potential (BMP) tests and modeling simulation. To do that, digestates from a pre-treated thermophilic acidogenic reactor that co-digested sludge and wine vinasse were used. The addition of nanoparticles favored the removal of particulate matter, which increased by 9% and 6% in terms of total solids and volatile solids, respectively. When combined with ozone pre-treatment, these increases were 27% and 24%, respectively, demonstrating enhanced AD efficiency. The dose of iron nanoparticles encapsulated in carbon did not result in a statistically significant increase in methane production when sludge and vinasse were used as feedstock. The combination of nanoparticles with the ozone pre-treatment significantly improved the methanogenic phase of the second stage, increasing the methane production yield by 22% and reducing the lag phase from 10 days to 3 days, according to the modified Gompertz model. |
| format | Article |
| id | doaj-art-4e5422ec65f04b01a57b3cdad043ddef |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-4e5422ec65f04b01a57b3cdad043ddef2025-08-20T02:11:11ZengMDPI AGApplied Sciences2076-34172024-10-011420950410.3390/app14209504Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic DigestionEncarnación Díaz Domínguez0María Eugenia Ibañez López1Jacek Mąkinia2Francisco Jesús Fernández-Morales3José Luis García Morales4Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, IVAGRO-Wine and Agrifood Research Institute, University of Cadiz, 11510 Cadiz, SpainDepartment of Environmental Technologies, Faculty of Marine and Environmental Sciences, IVAGRO-Wine and Agrifood Research Institute, University of Cadiz, 11510 Cadiz, SpainFaculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, PolandDepartment of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela S/N, 13071 Ciudad Real, SpainDepartment of Environmental Technologies, Faculty of Marine and Environmental Sciences, IVAGRO-Wine and Agrifood Research Institute, University of Cadiz, 11510 Cadiz, SpainBiodegradable organic waste offers significant opportunities for resource recovery within the frame of the circular economy. In this work, the effects of carbon-encapsulated iron nanoparticles and ozone pre-treatments in the mesophilic methanogenic stage of a temperature-phased an-aerobic digestion have been studied using biochemical methanogenic potential (BMP) tests and modeling simulation. To do that, digestates from a pre-treated thermophilic acidogenic reactor that co-digested sludge and wine vinasse were used. The addition of nanoparticles favored the removal of particulate matter, which increased by 9% and 6% in terms of total solids and volatile solids, respectively. When combined with ozone pre-treatment, these increases were 27% and 24%, respectively, demonstrating enhanced AD efficiency. The dose of iron nanoparticles encapsulated in carbon did not result in a statistically significant increase in methane production when sludge and vinasse were used as feedstock. The combination of nanoparticles with the ozone pre-treatment significantly improved the methanogenic phase of the second stage, increasing the methane production yield by 22% and reducing the lag phase from 10 days to 3 days, according to the modified Gompertz model.https://www.mdpi.com/2076-3417/14/20/9504TPADBMPmesophiliczero-valent ironozonation |
| spellingShingle | Encarnación Díaz Domínguez María Eugenia Ibañez López Jacek Mąkinia Francisco Jesús Fernández-Morales José Luis García Morales Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion Applied Sciences TPAD BMP mesophilic zero-valent iron ozonation |
| title | Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion |
| title_full | Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion |
| title_fullStr | Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion |
| title_full_unstemmed | Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion |
| title_short | Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion |
| title_sort | impact of nanoparticle addition and ozone pre treatment on mesophilic methanogenesis in temperature phased anaerobic digestion |
| topic | TPAD BMP mesophilic zero-valent iron ozonation |
| url | https://www.mdpi.com/2076-3417/14/20/9504 |
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