Publication Details
Category Text Publication
Reference Category Journals
DOI 10.1007/s00767-007-0046-5
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Title (Primary) PAK-Freisetzung aus verfestigten Recyclingbauprodukten und mineralischen Abfällen (Release of PAHs from solidified recycled construction materials and solid waste)
Author Henzler, R.; Grathwohl, P.
Source Titel Grundwasser
Year 2007
Department GWS
Volume 12
Issue 4
Page From 292
Page To 300
Language 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.
Persistent UFZ Identifier 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