Hydrodynamic dispersion of sodium by equilibrium and non-equilibrium methods through undisturbed sandy soil columns from the Adamantina Formation

Autores

  • Vanessaq Almeida de Godoy Universidade de São Paulo Autor http://orcid.org/0000-0002-2594-7351
  • Gian Franco Napa-Garcia Instituto Tecnológico Vale Autor
  • Lázaro Valentin Zuquette Universidade de São Paulo Autor

DOI:

https://doi.org/10.4025/actascitechnol.v41i1.35419

Palavras-chave:

dual-porosity, soil physical characteristics, conceptual model.

Resumo

 

Column tests using undisturbed samples of residual sandy soil from the Adamantina Formation (K) were performed to determine the sodium hydrodynamic coefficient by equilibrium and non-equilibrium methods. Analyzing the porosity and soil characteristics, as well as the breakthrough curves, it was possible to note a typical non-equilibrium transport behavior, related to the soil dual-porosity, particularly at early and late time behavior in the breakthrough curve tails. The experimental data were best fitted to the non-equilibrium method than to the equilibrium one, and the sum of the square errors was up to five-fold lower. The conceptual model analysis of the methods led to observations on the limitations of each method and a careful analysis of the obtained values, which are also related to the soil characteristics.

 

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Publicado

2019-05-02

Edição

Seção

Engenharia Civil

Como Citar

Hydrodynamic dispersion of sodium by equilibrium and non-equilibrium methods through undisturbed sandy soil columns from the Adamantina Formation. (2019). Acta Scientiarum. Technology, 41(1), e35419. https://doi.org/10.4025/actascitechnol.v41i1.35419

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