Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor
This research was conducted to calculate the mass transfer coefficient value for ozonation reaction of κ-carrageenan solution in the bubble column reactor. Ozone gas was produced using ozone generator type corona discharge. In this study, operating conditions were regulated at ozone gas flow rate 2-...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Diponegoro University
2019-03-01
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| Series: | Reaktor |
| Online Access: | https://ejournal.undip.ac.id/index.php/reaktor/article/view/16112 |
| _version_ | 1818999612277522432 |
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| author | Aji Prasetyaningrum Dyah Arum Kusumaningtyas Purbo Suseno Ratnawati Ratnawati |
| author_facet | Aji Prasetyaningrum Dyah Arum Kusumaningtyas Purbo Suseno Ratnawati Ratnawati |
| author_sort | Aji Prasetyaningrum |
| collection | DOAJ |
| description | This research was conducted to calculate the mass transfer coefficient value for ozonation reaction of κ-carrageenan solution in the bubble column reactor. Ozone gas was produced using ozone generator type corona discharge. In this study, operating conditions were regulated at ozone gas flow rate 2- 5 L min-1, pH 4-10, and temperature 29 ± 1 oC. Samples were tested every 5 minutes to determine the dissolved ozone concentration. The results showed that dissolved ozone concentrations increased with increasing ozonation time and ozone gas flow rate. However, a very high gas flow rate can increase turbulence so that the mass transfer coefficient (kLa) value decreased. In alkaline conditions, the formation of free radicals (HO*) increases so that the amount of dissolved ozone decreases. The kLa value of ozone gas in κ-carrageenan solution is slightly lower than the kLa value of the ozone gas in the water. The results of this study indicate that (kLa) ozone gas in water is 0.131 / minute while the value (kLa) in κ-carrageenan solution is 0.128 / minute.
Keywords: ozone; mass transfer; pH; flowrate |
| first_indexed | 2024-12-20T22:20:11Z |
| format | Article |
| id | doaj.art-2e917d012e1f488890553f086eba93cc |
| institution | Directory Open Access Journal |
| issn | 0852-0798 2407-5973 |
| language | English |
| last_indexed | 2024-12-20T22:20:11Z |
| publishDate | 2019-03-01 |
| publisher | Diponegoro University |
| record_format | Article |
| series | Reaktor |
| spelling | doaj.art-2e917d012e1f488890553f086eba93cc2022-12-21T19:24:58ZengDiponegoro UniversityReaktor0852-07982407-59732019-03-01180417718210.14710/reaktor.18.04.177-18214373Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column ReactorAji Prasetyaningrum0Dyah Arum Kusumaningtyas1Purbo Suseno2Ratnawati Ratnawati3Diponegoro UniversityDiponegoro UniversityDiponegoro UniversityDiponegoro UniversityThis research was conducted to calculate the mass transfer coefficient value for ozonation reaction of κ-carrageenan solution in the bubble column reactor. Ozone gas was produced using ozone generator type corona discharge. In this study, operating conditions were regulated at ozone gas flow rate 2- 5 L min-1, pH 4-10, and temperature 29 ± 1 oC. Samples were tested every 5 minutes to determine the dissolved ozone concentration. The results showed that dissolved ozone concentrations increased with increasing ozonation time and ozone gas flow rate. However, a very high gas flow rate can increase turbulence so that the mass transfer coefficient (kLa) value decreased. In alkaline conditions, the formation of free radicals (HO*) increases so that the amount of dissolved ozone decreases. The kLa value of ozone gas in κ-carrageenan solution is slightly lower than the kLa value of the ozone gas in the water. The results of this study indicate that (kLa) ozone gas in water is 0.131 / minute while the value (kLa) in κ-carrageenan solution is 0.128 / minute. Keywords: ozone; mass transfer; pH; flowratehttps://ejournal.undip.ac.id/index.php/reaktor/article/view/16112 |
| spellingShingle | Aji Prasetyaningrum Dyah Arum Kusumaningtyas Purbo Suseno Ratnawati Ratnawati Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor Reaktor |
| title | Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor |
| title_full | Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor |
| title_fullStr | Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor |
| title_full_unstemmed | Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor |
| title_short | Effect of pH and Gas Flow Rate on Ozone Mass Transfer of Κ-Carrageenan Solution in Bubble Column Reactor |
| title_sort | effect of ph and gas flow rate on ozone mass transfer of κ carrageenan solution in bubble column reactor |
| url | https://ejournal.undip.ac.id/index.php/reaktor/article/view/16112 |
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