Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/86702C48-87CE-4344-AC4A-7ADE710FB328 | - |
| Αναγνωριστικό | https://doi.org/ 10.1029/2000WR900082 | - |
| Γλώσσα | en | - |
| Μέγεθος | 10 pages | en |
| Τίτλος | Dissolution of a well-defined trichloroethylene pool in saturated porous media: Experimental design and aquifer characterization | en |
| Δημιουργός | Chrysikopoulos Constantinos | en |
| Δημιουργός | Χρυσικοπουλος Κωνσταντινος | el |
| Συντελεστής [Συνεργάτης Συγγραφέας] | Thomas C. Harmon | en |
| Συντελεστής [Συνεργάτης Συγγραφέας] | Kenneth Y. Lee | en |
| Εκδότης | University of California Press | en |
| Περιγραφή | A three-dimensional, bench-scale model aquifer was constructed to study the dissolution of a TCE pool. The aquifer consisted of medium-sized sand packing conveying steady, unidirectional flow. A key aspect of the experimental design was a mechanism by which a TCE pool of an ideal (circular) geometry was placed and maintained in direct contact with the bottom of the porous medium. The aqueous plume emanating from this pool was monitored at several downgradient sampling stations and analyzed using the analytical solution derived by Chrysikopoulos [1995]. All transport parameters required by this solution, with the exception of the average mass transfer coefficient (k*) for the pool, were estimated independently. Of special note are the dispersion parameters, which were estimated independently by fitting the results of a bromide tracer test with a newly derived analytical solution describing the transport of a conservative tracer in a homogeneous aquifer of finite thickness. | en |
| Περίληψη | A unique three-dimensional bench-scale model aquifer is designed and constructed to carry out dense nonaqueous phase liquid (DNAPL) pool dissolution experiments. The model aquifer consists of a rectangular glass tank with internal dimensions 150.0 cm length, 21.6 cm width, and 40.0 cm height. The formation of a welldefined circular pool with a perfectly flat pool-water interface is obtained by a bottom plate with a precise cutout to contain the DNAPL. The aquifer is packed with a wellcharacterized relatively uniform sand. A conservative tracer is employed for the determination of the longitudinal and transverse aquifer dispersivities. The dissolution studies are conducted using a circular trichloroethylene (TCE) pool. The sorption characteristics of TCE onto the aquifer sand are independently determined from a flowthrough column experiment. Steady state dissolved TCE concentrations at specific downstream locations within the aquifer are collected under three different interstitial velocities. An appropriate overall mass transfer coefficient is determined from each data set. The data collected in this study are useful for the validation of numerical and analytical DNAPL pool dissolution models. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2015-09-20 | - |
| Ημερομηνία Δημοσίευσης | 2000 | - |
| Θεματική Κατηγορία | TCE Pool Dissolution Experiments | en |
| Θεματική Κατηγορία | Column Experiment | en |
| Θεματική Κατηγορία | Tracer Experiment | en |
| Θεματική Κατηγορία | Experimental Design | en |
| Βιβλιογραφική Αναφορά | Constantinos V. Chrysikopoulos,Kenneth Y. Lee ,Thomas C. Harmon , "Dissolution of a well-defined trichloroethylene pool in saturated porous media: Experimental design and aquifer characterization" , Water Resources Research. 2000, 36(7):1687-1696 | en |
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