Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/107029
Type: Artigo de evento
Title: Transport Of Heavy Metals In A Fractured Porous Block: Experiments And A 3-d Model
Author: Himmelsbach T.
Wendland E.
Abstract: Exploited coal seams are used to deposit industrial residues from thermal energy and waste incineration plants in North Rhine Westfalia, Germany. Use of such an underground repository requires proof that dissolved contaminants cannot reach the biosphere. Numerical models may be used as tool to predict the local and temporal migration of pollutants. In order to investigate the migration of heavy metals in a porous sandstone block containing a single fracture, two tracer experiments were performed under precisely defined hydraulic flow conditions. In the experiments, pyranine, cadmium and lead were applied, and the hydrochemical conditions corresponded to a depth of 1000 m below ground surface. The fracture was considered as a two dimensional parallel plate conduit and the rock matrix was treated as a three dimensional porous medium. Together with rock properties determined in the laboratory, the modelling yielded a good agreement between measured and simulated breakthrough curves by calibrating the fracture aperture and longitudinal dispersion.Exploited coal seams are used to deposit industrial residues from thermal energy and waste incineration plants in North Rhine Westfalia, Germany. Use of such an underground repository requires proof that dissolved contaminants cannot reach the biosphere. Numerical models may be used as tool to predict the local and temporal migration of pollutants. In order to investigate the migration of heavy metals in a porous sandstone block containing a single fracture, two tracer experiments were performed under precisely defined hydraulic flow conditions. In the experiments, pyranine, cadmium and lead were applied, and the hydrochemical conditions corresponded to a depth of 1000 m below ground surface. The fracture was considered as a two dimensional parallel plate conduit and the rock matrix was treated as a three dimensional porous medium. Together with rock properties determined in the laboratory, the modelling yielded a good agreement between measured and simulated breakthrough curves by calibrating the fracture aperture and longitudinal dispersion.
Editor: IAHS, Houston, TX, United States
Rights: fechado
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0034124438&partnerID=40&md5=78dcd826186287673522dba0b91a5cb2
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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