Migration of pollutant inorganic through composite liners / Migração de poluentes inorgânicos em liners compostos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This research analyzes the behavior of two sets of liners subjected to the percolation of KCLsolution. Samples of compacted soil from Corumbataí Formation, combined with a geosynthetic clay liner (GCL) of brazilian manufacture were used. Column percolation tests were used in two specimens, in the settings: compacted soil above the GCL and compacted soil below the GCL. These tests allowed the determination of hydraulic conductivity and transport parameters of the materials under study. Thus, the behavior of these composite liners was compared with the results obtained by Musso (2008), which tested the independent configuration. After the start of percolation of the KCLsolution the hydraulic conductivity (K) of the two settings showed an increase. However, this increase in Kdid not affect the hydraulic performance of materials, and the hydraulic conductivity was observed with values of about 10 POT.-11m/s. The retardation factor of the configuration in which the GCL is above the layer of compacted soil was larger in relation to the other configuration analyzed. Overall, it was considered that this configuration showed better performance as composite liner. Comparing the results with those presented by Musso (2008), the hydraulic conductivity didnt differ, and the composite liners had higher retardation factors than the liner of compacted soil alone.

ASSUNTO(S)

colum test liner composto geosynthetic clay liner (gcl) transporte de poluentes solo compactado transport of pollutant composite liners ensaios de coluna geocomposto bentonítico compacted soil

ACESSO AO ARTIGO

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