Intensification of the ozone-water mass transfer in an oscillatory flow reactor with innovative design of periodic constrictions: Optimization and application in ozonation water treatment
| Autor: | António Ferreira, Cátia A.L. Graça, Rita Bravo Lima, Adrián M.T. Silva, M. Fernando R. Pereira |
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| Rok vydání: | 2020 |
| Předmět: |
Mass transfer coefficient
Water mass Ozone Materials science General Chemical Engineering 02 engineering and technology General Chemistry Mechanics 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Volumetric flow rate chemistry.chemical_compound chemistry Mass transfer Environmental Chemistry Water treatment 0210 nano-technology Oscillation amplitude Oscillatory flow |
| Zdroj: | Chemical Engineering Journal. 389:124412 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2020.124412 |
| Popis: | Ozone-water mass transfer was investigated in continuous mode using a macroscale oscillatory flow reactor provided with smooth periodic constrictions (OFR-SPC). The effects of oscillation amplitude (x0) and frequency (f) on the mass transfer coefficient (kLa) were assessed through a Doehlert experimental design. Different gas and liquid flow rates were also studied. The results show that kLa increases with f (up to 4 Hz), x0 (up to 15 mm), and the gas flow rate (up to 150 Ncm3 min−1). No significant changes in kLa were observed over a wide range of liquid flow rates (up to 180 mL min−1) and for Re0 |
| Databáze: | OpenAIRE |
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