Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid
Objectives. The work set out to develop a bioreactor that incorporates a carbon dioxide removal unit within the apparatus gas phase, which is capable of operating without the need for supplementary compression apparatus. As part of testing the developed equipment in order to ascertain its capacity f...
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| Format: | Article |
| Language: | Russian |
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MIREA - Russian Technological University
2025-01-01
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| Series: | Тонкие химические технологии |
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| Online Access: | https://www.finechem-mirea.ru/jour/article/view/2193 |
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| author | V. M. Kochetkov I. S. Gaganov D. V. Tolkin V. V. Kochetkov P. A. Nynkov |
| author_facet | V. M. Kochetkov I. S. Gaganov D. V. Tolkin V. V. Kochetkov P. A. Nynkov |
| author_sort | V. M. Kochetkov |
| collection | DOAJ |
| description | Objectives. The work set out to develop a bioreactor that incorporates a carbon dioxide removal unit within the apparatus gas phase, which is capable of operating without the need for supplementary compression apparatus. As part of testing the developed equipment in order to ascertain its capacity for enhanced biomass production, the principal fermentation system parameters that facilitate the optimal bioreactor productivity in conditions of carbon dioxide removal from the apparatus gas phase were identified.Methods. A series of tests were conducted on the fermentation unit with the objective of controlling the oxygen and carbon dioxide content in the gas phase of the bioreactor. This was achieved using an in-line gas analyzer fitted with electrochemical sensors. The oxygen and carbon dioxide content in the gas phase was determined by means of gas chromatography. The oxygen and natural gas flow rates were determined using a thermal electronic flow controller equipped with thermoresistive elements. The oxygen content of the cultural liquid was determined by means of an optical oxygen sensor with integrated transducer. The pH level in the bioreactor was monitored and maintained using an electrochemical pH sensor.Results. The efficacy of the newly devised jet-type bioreactor design, which permits the incorporation of a carbon dioxide removal unit into the fermentation system without requiring supplementary compression apparatus, was evaluated through experimentation. The system was tested with the carbon dioxide removal unit included in the design, resulting in a 64% increase in bioreactor productivity and a 18% reduction in oxygen consumption as a component of the gas supply.Conclusions. The operational parameters of a technological bioreactor that facilitate a stable continuous process of bacterial cultivation were identified. |
| format | Article |
| id | doaj-art-4cb40c66520c47d0b3bd401b9540f9b3 |
| institution | DOAJ |
| issn | 2410-6593 2686-7575 |
| language | Russian |
| publishDate | 2025-01-01 |
| publisher | MIREA - Russian Technological University |
| record_format | Article |
| series | Тонкие химические технологии |
| spelling | doaj-art-4cb40c66520c47d0b3bd401b9540f9b32025-08-20T02:59:45ZrusMIREA - Russian Technological UniversityТонкие химические технологии2410-65932686-75752025-01-0119650851610.32362/2410-6593-2024-19-6-508-5161785Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquidV. M. Kochetkov0I. S. Gaganov1D. V. Tolkin2V. V. Kochetkov3P. A. Nynkov4GiprobiosintezGiprobiosintezGiprobiosintezGiprobiosintezGiprobiosintezObjectives. The work set out to develop a bioreactor that incorporates a carbon dioxide removal unit within the apparatus gas phase, which is capable of operating without the need for supplementary compression apparatus. As part of testing the developed equipment in order to ascertain its capacity for enhanced biomass production, the principal fermentation system parameters that facilitate the optimal bioreactor productivity in conditions of carbon dioxide removal from the apparatus gas phase were identified.Methods. A series of tests were conducted on the fermentation unit with the objective of controlling the oxygen and carbon dioxide content in the gas phase of the bioreactor. This was achieved using an in-line gas analyzer fitted with electrochemical sensors. The oxygen and carbon dioxide content in the gas phase was determined by means of gas chromatography. The oxygen and natural gas flow rates were determined using a thermal electronic flow controller equipped with thermoresistive elements. The oxygen content of the cultural liquid was determined by means of an optical oxygen sensor with integrated transducer. The pH level in the bioreactor was monitored and maintained using an electrochemical pH sensor.Results. The efficacy of the newly devised jet-type bioreactor design, which permits the incorporation of a carbon dioxide removal unit into the fermentation system without requiring supplementary compression apparatus, was evaluated through experimentation. The system was tested with the carbon dioxide removal unit included in the design, resulting in a 64% increase in bioreactor productivity and a 18% reduction in oxygen consumption as a component of the gas supply.Conclusions. The operational parameters of a technological bioreactor that facilitate a stable continuous process of bacterial cultivation were identified.https://www.finechem-mirea.ru/jour/article/view/2193bioreactorfermenterfermentationbiomassproteincarbon dioxideejectormethane-oxidizing bacteria<i>methylococcus capsulatus</i> |
| spellingShingle | V. M. Kochetkov I. S. Gaganov D. V. Tolkin V. V. Kochetkov P. A. Nynkov Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid Тонкие химические технологии bioreactor fermenter fermentation biomass protein carbon dioxide ejector methane-oxidizing bacteria <i>methylococcus capsulatus</i> |
| title | Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid |
| title_full | Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid |
| title_fullStr | Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid |
| title_full_unstemmed | Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid |
| title_short | Increasing the efficiency of bioreactor operation for cultivation of methane-oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid |
| title_sort | increasing the efficiency of bioreactor operation for cultivation of methane oxidizing bacteria under conditions of decreasing carbon dioxide concentration in the cultural liquid |
| topic | bioreactor fermenter fermentation biomass protein carbon dioxide ejector methane-oxidizing bacteria <i>methylococcus capsulatus</i> |
| url | https://www.finechem-mirea.ru/jour/article/view/2193 |
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