Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties
The present work addresses the correlation of bisphenol A (BPA) degradation by hydrodynamic cavitation with the fluid mechanical properties of the cavitating jet in the reactor. The effects of inlet pressure and two orifices were investigated. The fluid mechanics conditions during the reaction were...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-02-01
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| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417722000438 |
| _version_ | 1818296566348251136 |
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| author | Manuel Deggelmann Julius-Alexander Nöpel Frank Rüdiger Dirk Paustian Patrick Braeutigam |
| author_facet | Manuel Deggelmann Julius-Alexander Nöpel Frank Rüdiger Dirk Paustian Patrick Braeutigam |
| author_sort | Manuel Deggelmann |
| collection | DOAJ |
| description | The present work addresses the correlation of bisphenol A (BPA) degradation by hydrodynamic cavitation with the fluid mechanical properties of the cavitating jet in the reactor. The effects of inlet pressure and two orifices were investigated. The fluid mechanics conditions during the reaction were evaluated by optical measurements to determine the jet length, bubble volume, number of bubbles, and bubble size distribution. In addition, chemiluminescence of luminol is used to localize chemically active bubbles due to the generation of hydroxyl radicals in the reactor chamber. The correlation between the rate constants of BPA degradation and the mechanical properties of the liquid is discussed. Here, linear dependencies between the degradation of BPA and the volume expansion of the bubble volume and chemiluminescence are found, allowing prediction of the rate constants and the hydroxyl radicals generated. BPA degradation of 50% was achieved in 30 min with the 1.7 mm nozzle at 25 bar. However, the 1 mm nozzle has been demonstrated to be more energetically efficient, achieving 10% degradation with 30% less power per 100 passes. There is a tendency for the number of small bubbles in the reactor to increase with smaller nozzle and increasing pressure difference. |
| first_indexed | 2024-12-13T04:05:34Z |
| format | Article |
| id | doaj.art-cf263c0d345b4680b93a7401d05d1c92 |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-12-13T04:05:34Z |
| publishDate | 2022-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-cf263c0d345b4680b93a7401d05d1c922022-12-22T00:00:12ZengElsevierUltrasonics Sonochemistry1350-41772022-02-0183105950Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical propertiesManuel Deggelmann0Julius-Alexander Nöpel1Frank Rüdiger2Dirk Paustian3Patrick Braeutigam4Institute of Technical and Environmental Chemistry, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; Center for Energy and Environmental Chemistry (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, GermanyInstitute of Fluid Mechanics, Faculty of Mechanical Science and Engineering, Technische Universität Dresden, George-Baehr-Str. 3c, 01069 Dresden, GermanyInstitute of Fluid Mechanics, Faculty of Mechanical Science and Engineering, Technische Universität Dresden, George-Baehr-Str. 3c, 01069 Dresden, GermanyInstitute of Technical and Environmental Chemistry, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; Center for Energy and Environmental Chemistry (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, GermanyInstitute of Technical and Environmental Chemistry, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; Center for Energy and Environmental Chemistry (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; Fraunhofer IKTS, Fraunhofer Institute for Ceramic Technologies and Systems, Michael-Faraday-Straße 1, 07629 Hermsdorf, Germany; Corresponding author at: Institute of Technical and Environmental Chemistry, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany.The present work addresses the correlation of bisphenol A (BPA) degradation by hydrodynamic cavitation with the fluid mechanical properties of the cavitating jet in the reactor. The effects of inlet pressure and two orifices were investigated. The fluid mechanics conditions during the reaction were evaluated by optical measurements to determine the jet length, bubble volume, number of bubbles, and bubble size distribution. In addition, chemiluminescence of luminol is used to localize chemically active bubbles due to the generation of hydroxyl radicals in the reactor chamber. The correlation between the rate constants of BPA degradation and the mechanical properties of the liquid is discussed. Here, linear dependencies between the degradation of BPA and the volume expansion of the bubble volume and chemiluminescence are found, allowing prediction of the rate constants and the hydroxyl radicals generated. BPA degradation of 50% was achieved in 30 min with the 1.7 mm nozzle at 25 bar. However, the 1 mm nozzle has been demonstrated to be more energetically efficient, achieving 10% degradation with 30% less power per 100 passes. There is a tendency for the number of small bubbles in the reactor to increase with smaller nozzle and increasing pressure difference.http://www.sciencedirect.com/science/article/pii/S1350417722000438Hydrodynamic cavitationBisphenol AMicropollutantsFluid mechanical propertiesOptical measurementsChemiluminescence |
| spellingShingle | Manuel Deggelmann Julius-Alexander Nöpel Frank Rüdiger Dirk Paustian Patrick Braeutigam Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties Ultrasonics Sonochemistry Hydrodynamic cavitation Bisphenol A Micropollutants Fluid mechanical properties Optical measurements Chemiluminescence |
| title | Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties |
| title_full | Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties |
| title_fullStr | Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties |
| title_full_unstemmed | Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties |
| title_short | Hydrodynamic cavitation for micropollutant degradation in water – Correlation of bisphenol A degradation with fluid mechanical properties |
| title_sort | hydrodynamic cavitation for micropollutant degradation in water correlation of bisphenol a degradation with fluid mechanical properties |
| topic | Hydrodynamic cavitation Bisphenol A Micropollutants Fluid mechanical properties Optical measurements Chemiluminescence |
| url | http://www.sciencedirect.com/science/article/pii/S1350417722000438 |
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