skip to main content
Idioma:

Concentration Rebound Following In Situ Chemical Oxidation in Fractured Clay

Mundle, Keely ; Reynolds, David A ; West, Michael R ; Kueper, Bernard H

Ground water, 2007-11, Vol.45 (6), p.692-702 [Periódico revisado por pares]

Malden, USA: Malden, USA : Blackwell Publishing Inc

Texto completo disponível

Citações Citado por
  • Título:
    Concentration Rebound Following In Situ Chemical Oxidation in Fractured Clay
  • Autor: Mundle, Keely ; Reynolds, David A ; West, Michael R ; Kueper, Bernard H
  • Assuntos: Aluminum Silicates - analysis ; Aquifers ; Clay ; Correlation analysis ; Geologic Sediments - analysis ; Geologic Sediments - chemistry ; Groundwater ; Hydrologic analysis ; Hydrologic modeling ; Models, Theoretical ; Oxidation ; Oxidation-Reduction ; Trichloroethylene - analysis ; Trichloroethylene - chemistry ; Water Pollutants, Chemical - analysis
  • É parte de: Ground water, 2007-11, Vol.45 (6), p.692-702
  • Notas: http://dx.doi.org/10.1111/j.1745-6584.2007.00359.x
    ArticleID:GWAT359
    istex:0E4F4FDB283DF5FB5EB31DBF97CD06A2B6147F00
    ark:/67375/WNG-M73N7JLD-K
    ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
    ObjectType-Article-1
    ObjectType-Feature-2
  • Descrição: A two-dimensional, transient-flow, and transport numerical model was developed to simulate in situ chemical oxidation (ISCO) of trichloroethylene and tetrachloroethylene by potassium permanganate in fractured clay. This computer model incorporates dense, nonaqueous phase liquid dissolution, reactive aquifer material, multispecies matrix diffusion, and kinetic formulations for the oxidation reactions. A sensitivity analysis for two types of parameters, hydrogeological and engineering, including matrix porosity, matrix organic carbon, fracture aperture, potassium permanganate dosage, and hydraulic gradient, was conducted. Remediation metrics investigated were the relative rebound concentrations arising from back diffusion and percent mass destroyed. No well-defined correlation was found between the magnitude of rebound concentrations during postremedy monitoring and the amount of contaminant mass destroyed during the application. Results indicate that all investigated parameters affect ISCO remediation in some form. Results indicate that when advective transport through the fracture is dominant relative to diffusive transport into the clay matrix (large System Peclet Number), permanganate is more likely to be flushed out of the system and treatment is not optimal. If the System Peclet Number is too small, indicating that diffusion into the matrix is dominant relative to advection through the fracture, permanganate does not traverse the entire fracture, leading to postremediation concentration rebound. Optimal application of ISCO requires balancing advective transport through the fracture with diffusive transport into the clay matrix.
  • Editor: Malden, USA: Malden, USA : Blackwell Publishing Inc
  • Idioma: Inglês
Links
Voltar para lista de resultados
Ir para página anteriorAnterior Resultado  8 AvançarIr para próxima página

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.