TRANSPORTE ELETROCINÉTICO DE GASOLINA E ÓLEO ATRAVÉS DE UM SOLO RESIDUAL GNÁISSICO E BORRA DE PETRÓLEO DA BACIA DE CAMPOS / ELECTROKINETIC TRANSPORT OF GASOLINE AND OIL THROUGH A GNAISSIC RESIDUAL SOIL AND OIL GOUND FROM CAMPOS BASIN

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

This study assesses the use of electrokinetics as an innovative technique for remediation of fine-grained soils. It relies on the application of an electrical potential through a soil mass, producing a series of coupled flows, including fluid flow -electroosmosis- and migration of ions. The first stage of the experimental program encompassed a series of tests with samples of residual soil contaminated with gasoline and crude oil. The results showed that the presence of these compounds did not affect the electroosmotic behavior, and there was observed no changes on the pH and electric conductivity of neither the electrolytes solution nor the soil itself.When oil contaminated samples are of concern, it was noticed a clear electroosmotic flow towards the anode. This pattern was also observed, but at a reduced level, on the tests on the gasoline contaminated samples.The second stage of the experimental program consisted on a series of tests with oil ground from Campos Basin aiming on dewatering and de-oiling. The results were satisfying, in all sample there was a noticeable reduction on the water and oil contents. Tests results also showed a zinc contamination on the sample caused by electrolysis on the brass electrodes.

ASSUNTO(S)

gasolina metals eletrocinese remediation eletrolise metais eletrode eletrolise eletrodos remediacao petroleum waste borra de petroleo corrosion crude oil electrokinetic gasoline corrosao oleo cru

ACESSO AO ARTIGO

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