Publikation:
Influence of flow rate and particle size on local equilibrium in column percolation tests using crushed masonry

Kurzanzeige
dc.contributor.authorBandow, Nicole
dc.contributor.authorFinkel, Michael
dc.contributor.authorGrathwohl, Peter
dc.date.accessioned2024-06-16T14:22:21Z
dc.date.available2024-06-16T14:22:21Z
dc.date.issued2019
dc.description.abstractColumn leaching tests are frequently used and accepted for investigation of release of hazardous substances from solid materials. Independent of differences due to the field of application or national regulations, column tests assume that local equilibrium is established in the experiment which facilitates transfer of results to field conditions. In the process of harmonization and standardization within Europe the question on the influence of flow rate and grain size distribution on the local equilibrium was raised. Thus, a set of experiments using two different masonry materials with varying grain size distribution and flow rate were conducted including stop/flow experiments. Results are compared to a numerical model which takes intraparticle pore diffusion-controlled release of Mo and V into the percolating water into account. Due to the relatively high intraparticle porosity of the materials (24-29%) data and model indicate that initially equilibrium-state conditions prevail followed by rapidly decreasing concentrations. The model fits data for Mo and V reasonably well; however, after the initial decline of concentrations (at L/S>2) extended tailing is observed especially of elements occurring as oxides, which is not captured by the model. © 2020 Springer Nature Switzerland AGen
dc.format.extent1 Onlineressource (pages 642-651)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-1353
dc.identifier.urihttps://openumwelt.de/handle/123456789/4564
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectAuslaugung
dc.subjectPorosität
dc.subjectVanadium
dc.subjectMolybdän
dc.titleInfluence of flow rate and particle size on local equilibrium in column percolation tests using crushed masonry
dc.title.alternativeInfluence of flow rate and particle size on local equilibrium in column percolation tests using crushed masonry
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleJournal of material cycles and waste management
local.bibliographicCitation.originalDOI10.1007/s10163-019-00827-3
local.bibliographicCitation.volume21 (2019)
local.collectionAufsätze
local.contributor.authorId(DE-588)1014105374
local.contributor.authorId02067948
local.contributor.authorId00277474
local.identifier.catalogId02473387
local.ingest.leader05368naa a2200000uu 4500
local.jointTitleINFLUENCE OF FLOW RATE AND PARTICLE SIZE ON LOCAL EQUILIBRIUM IN COLUMN PERCOLATION TESTS USING CRUSHED MASONRY
local.reviewtrue
local.sourcecatalog
local.staffPublicationtrue
relation.isAuthorOfPublication2138bee3-11c7-4526-b185-417996179163
relation.isAuthorOfPublication.latestForDiscovery2138bee3-11c7-4526-b185-417996179163
Dateien
Sammlungen
Aufsätze