High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation
Two well-studied strategies to enhance syngas fermentation are elevated headspace pressure, increasing gas-liquid (GL) mass transfer, and moving bed biofilms (MBB) to overcome kinetic growth limitation. A combination of these two methods has not received much attention. This study evaluates the inte...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
AIDIC Servizi S.r.l.
2021-06-01
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| Series: | Chemical Engineering Transactions |
| Online Access: | https://www.cetjournal.it/index.php/cet/article/view/11674 |
| _version_ | 1818588845752451072 |
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| author | Vasan Sivalingam Carlos Dinamarca |
| author_facet | Vasan Sivalingam Carlos Dinamarca |
| author_sort | Vasan Sivalingam |
| collection | DOAJ |
| description | Two well-studied strategies to enhance syngas fermentation are elevated headspace pressure, increasing gas-liquid (GL) mass transfer, and moving bed biofilms (MBB) to overcome kinetic growth limitation. A combination of these two methods has not received much attention. This study evaluates the integration of these two strategies in one single reactor. The hydrogen (H2) GL mass transfer is the primary bottleneck in syngas fermentation due to the lowest solubility among syngas components. The syngas composition is mimicked here as a mixture of H2 gas and sodium bicarbonate (NaHCO3) salt. Initially, fermentation is performed at 15 bar H2 headspace pressure in the suspended culture, then the experiment is repeated with MBB integration, and the performance is critically evaluated. The study with integrated biofilm shows a 33 % improvement in H2 gas uptake rate (200 mmol/L·day) and 48 % enhancement in acetate synthesis rate (37.4 mmol/L· day). This study concludes that MBB could successfully be integrated into an elevated pressure syngas fermenter, enhancing the fermentation process efficiency. |
| first_indexed | 2024-12-16T09:31:14Z |
| format | Article |
| id | doaj.art-7a6b1132f6524ecfabef3ad134acbb48 |
| institution | Directory Open Access Journal |
| issn | 2283-9216 |
| language | English |
| last_indexed | 2024-12-16T09:31:14Z |
| publishDate | 2021-06-01 |
| publisher | AIDIC Servizi S.r.l. |
| record_format | Article |
| series | Chemical Engineering Transactions |
| spelling | doaj.art-7a6b1132f6524ecfabef3ad134acbb482022-12-21T22:36:31ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162021-06-018610.3303/CET2186248High Pressure Moving Bed Biofilm Reactor for Syngas FermentationVasan SivalingamCarlos DinamarcaTwo well-studied strategies to enhance syngas fermentation are elevated headspace pressure, increasing gas-liquid (GL) mass transfer, and moving bed biofilms (MBB) to overcome kinetic growth limitation. A combination of these two methods has not received much attention. This study evaluates the integration of these two strategies in one single reactor. The hydrogen (H2) GL mass transfer is the primary bottleneck in syngas fermentation due to the lowest solubility among syngas components. The syngas composition is mimicked here as a mixture of H2 gas and sodium bicarbonate (NaHCO3) salt. Initially, fermentation is performed at 15 bar H2 headspace pressure in the suspended culture, then the experiment is repeated with MBB integration, and the performance is critically evaluated. The study with integrated biofilm shows a 33 % improvement in H2 gas uptake rate (200 mmol/L·day) and 48 % enhancement in acetate synthesis rate (37.4 mmol/L· day). This study concludes that MBB could successfully be integrated into an elevated pressure syngas fermenter, enhancing the fermentation process efficiency.https://www.cetjournal.it/index.php/cet/article/view/11674 |
| spellingShingle | Vasan Sivalingam Carlos Dinamarca High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation Chemical Engineering Transactions |
| title | High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation |
| title_full | High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation |
| title_fullStr | High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation |
| title_full_unstemmed | High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation |
| title_short | High Pressure Moving Bed Biofilm Reactor for Syngas Fermentation |
| title_sort | high pressure moving bed biofilm reactor for syngas fermentation |
| url | https://www.cetjournal.it/index.php/cet/article/view/11674 |
| work_keys_str_mv | AT vasansivalingam highpressuremovingbedbiofilmreactorforsyngasfermentation AT carlosdinamarca highpressuremovingbedbiofilmreactorforsyngasfermentation |