Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator
The present experimental study aimed to investigate the performance and characteristics of the dissolved oxygen in water aeration under the variations of the gap between the air nozzle and the outlet of new developed swirl flow type of the microbubble generator (MBG). The present experimental invest...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2022
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| Online Access: | https://repository.ugm.ac.id/278873/1/Hydrodynamic%20characteristics%20of%20the%20microbubble%20dissolution%20in%20liquid%20using%20the%20swirl%20flow%20type%20of%20microbubble%20generator.pdf |
| _version_ | 1797037376050036736 |
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| author | Mawarni, Drajat Indah Juwana, Wibawa Endra Yuana, Kumara Ari Budhijanto, Wiratni Deendarlianto, Deendarlianto Indarto, Indarto |
| author_facet | Mawarni, Drajat Indah Juwana, Wibawa Endra Yuana, Kumara Ari Budhijanto, Wiratni Deendarlianto, Deendarlianto Indarto, Indarto |
| author_sort | Mawarni, Drajat Indah |
| collection | UGM |
| description | The present experimental study aimed to investigate the performance and characteristics of the dissolved oxygen in water aeration under the variations of the gap between the air nozzle and the outlet of new developed swirl flow type of the microbubble generator (MBG). The present experimental investigation, the flow rates of both of air (QG) and the water (QL) were determined in the range of (0.1–0.8) l/min and (20–50) l/min, respectively. The shadow photographic technique was used to extract the results of a high-speed camera of microbubbles images to find the bubbles size and their distribution. The dynamic physical absorption model was used to measure the coefficient of the oxygen volumetric mass transfer (KLa). The results show that the microbubbles size (diameter average davg and peak PDF curve) produced by the swirl MBG type was smaller and more uniform than that of produced by orifice MBG type. Next, the characteristics of the microbubbles were investigated by the combinations of QG, QL and the gap between the air nozzle and the outlet of the microbubble generator. Here, it is noticed that the higher the gas flow rate, the higher the average diameter of the bubble. The higher the liquid flow rate, the lower the average diameter of the bubble. Furthermore, the QL increases with KLa. Finally, the empirical correlations to predict the KLa, davg and the log-normal distribution of the bubble diameter were proposed. |
| first_indexed | 2024-03-14T00:02:23Z |
| format | Article |
| id | oai:generic.eprints.org:278873 |
| institution | Universiti Gadjah Mada |
| language | English |
| last_indexed | 2024-03-14T00:02:23Z |
| publishDate | 2022 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | oai:generic.eprints.org:2788732023-10-18T05:16:03Z https://repository.ugm.ac.id/278873/ Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator Mawarni, Drajat Indah Juwana, Wibawa Endra Yuana, Kumara Ari Budhijanto, Wiratni Deendarlianto, Deendarlianto Indarto, Indarto Engineering Industrial Engineering The present experimental study aimed to investigate the performance and characteristics of the dissolved oxygen in water aeration under the variations of the gap between the air nozzle and the outlet of new developed swirl flow type of the microbubble generator (MBG). The present experimental investigation, the flow rates of both of air (QG) and the water (QL) were determined in the range of (0.1–0.8) l/min and (20–50) l/min, respectively. The shadow photographic technique was used to extract the results of a high-speed camera of microbubbles images to find the bubbles size and their distribution. The dynamic physical absorption model was used to measure the coefficient of the oxygen volumetric mass transfer (KLa). The results show that the microbubbles size (diameter average davg and peak PDF curve) produced by the swirl MBG type was smaller and more uniform than that of produced by orifice MBG type. Next, the characteristics of the microbubbles were investigated by the combinations of QG, QL and the gap between the air nozzle and the outlet of the microbubble generator. Here, it is noticed that the higher the gas flow rate, the higher the average diameter of the bubble. The higher the liquid flow rate, the lower the average diameter of the bubble. Furthermore, the QL increases with KLa. Finally, the empirical correlations to predict the KLa, davg and the log-normal distribution of the bubble diameter were proposed. Elsevier Ltd 2022-08 Article PeerReviewed application/pdf en https://repository.ugm.ac.id/278873/1/Hydrodynamic%20characteristics%20of%20the%20microbubble%20dissolution%20in%20liquid%20using%20the%20swirl%20flow%20type%20of%20microbubble%20generator.pdf Mawarni, Drajat Indah and Juwana, Wibawa Endra and Yuana, Kumara Ari and Budhijanto, Wiratni and Deendarlianto, Deendarlianto and Indarto, Indarto (2022) Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator. Journal of Water Process Engineering, 48. pp. 1-12. ISSN 22147144 https://www.sciencedirect.com/science/article/pii/S2214714422002902?via%3Dihub https://doi.org/10.1016/j.jwpe.2022.102846 |
| spellingShingle | Engineering Industrial Engineering Mawarni, Drajat Indah Juwana, Wibawa Endra Yuana, Kumara Ari Budhijanto, Wiratni Deendarlianto, Deendarlianto Indarto, Indarto Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| title | Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| title_full | Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| title_fullStr | Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| title_full_unstemmed | Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| title_short | Hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| title_sort | hydrodynamic characteristics of the microbubble dissolution in liquid using the swirl flow type of microbubble generator |
| topic | Engineering Industrial Engineering |
| url | https://repository.ugm.ac.id/278873/1/Hydrodynamic%20characteristics%20of%20the%20microbubble%20dissolution%20in%20liquid%20using%20the%20swirl%20flow%20type%20of%20microbubble%20generator.pdf |
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