Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| Titel (primär) | Experimental and theoretical investigations of oxygen release by a trapped gas phase |
| Autor | Beckmann, A.; Eisermann, D.; Geistlinger, H.; Krauss, G.; Lazik, D.; Mayer, U. |
| Quelle | Acta Universitatis Carolinae - Geologica |
| Erscheinungsjahr | 2002 |
| Department | HDG; GWS; BOPHY |
| Band/Volume | 46 |
| Heft | 2/3 |
| Seite von | 458 |
| Seite bis | 461 |
| Sprache | englisch |
| Abstract | Oxygen sparging, air sparging and biosparging are based on phase-transfer reactions between multicomponent phases; they use the ability of the aquifer to capture gas phases of significant quantity (- 10% of the pore space). The oxygen-releasing process is governed by phase-transfer kinetics. The characteristics (Henry coefficients, rate constants) and the governing equations of the kinetic model for a multi-component trapped gas phase are presented. First, the hydraulic impact is studied by the IDOXWALL model: variable gas volume, implicit treatment of the gas saturation and operator splitting method. Second, the quasi-exact solution is compared with the multi-component reactive transport model, MIN3P (global implicit method, explicit treatment of the gas saturation), and shows reasonable agreement, especially for larger times (t > I day). Within a 2D-MIN3P simulation we studied the hydraulic and geochemical impact: bypassing the contaminants due to aquifer clogging by gas bubble entrapment and precipitation of hydroxide mineral phases. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5503 |
| Beckmann, A., Eisermann, D., Geistlinger, H., Krauss, G., Lazik, D., Mayer, U. (2002): Experimental and theoretical investigations of oxygen release by a trapped gas phase Acta Universitatis Carolinae - Geologica 46 (2/3), 458 - 461 |
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