Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1007/s00767-007-0046-5 |
| Volltext | Shareable Link |
| Titel (primär) | PAK-Freisetzung aus verfestigten Recyclingbauprodukten und mineralischen Abfällen (Release of PAHs from solidified recycled construction materials and solid waste) |
| Autor | Henzler, R.; Grathwohl, P. |
| Quelle | Grundwasser |
| Erscheinungsjahr | 2007 |
| Department | GWS |
| Band/Volume | 12 |
| Heft | 4 |
| Seite von | 292 |
| Seite bis | 300 |
| Sprache | deutsch |
| Keywords | PAH; sorption; diffusion; leaching test; risk assessment |
| Abstract | Diffusive contaminant fluxes from subsurface construction materials as well as from solidified waste and recycled materials (e.g. demolition waste) can lead to significant long-term input of contaminants into seepage water or groundwater. Demolition waste, sandy soil material and asphalt granulates were solidified and investigated in a modified tank diffusion test to determine the PAH fluxes (F) under maximum concentration gradients. Using a parameter fitting routine, the apparent diffusion coefficients (D-a) were determined. Fluxes (F) were determined at different temperatures and evaluated using the Arrhenius relationship to determine the activation energy (Delta E-a). A temperature decrease of 10 degrees C typically decreases the contaminant fluxes by 50%. D-a and Delta E-a are constants for given contaminant loadings and can be determined easily with the modified batch diffusion experiment. D-a and Delta E-a allow the calculation of contaminant releases for real case sub! surface structures at given temperatures. Average concentrations in groundwater depend on time period, flow velocity, and averaged water volume. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1866 |
| Henzler, R., Grathwohl, P. (2007): PAK-Freisetzung aus verfestigten Recyclingbauprodukten und mineralischen Abfällen (Release of PAHs from solidified recycled construction materials and solid waste) Grundwasser 12 (4), 292 - 300 10.1007/s00767-007-0046-5 |
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