Resumen
This paper presents a study in which it is tested the effectiveness of zero-valent iron for arsenic remediation of a soil treatment leachate, experimental approach considers to investigate Fe° permeable reactive barrier performance for the treatment of arsenic polluted soil obtained from a mining area in central Mexico. By applying electro-remotion using a series of continuous-flow columns, allowed to obtain experimental data for critical parameters optimization to electro remediate the polluted soil, as electroosmotic flow occurs across the columns. A flow-through electrochemical reactor with major capacity was used to scale up the treatment. This experimental disposition was used with a soil sample in which porosity was enhanced by the presence of glass-fiber (relation of 1:1). Application of a 45 mA current during 7 h in an electrochemical treatment allowed obtaining arsenic removal efficiencies around 94 % at pH 7 and close to 41 % at pH 11. Polarography results indicates there is a strong interaction of Fe(OH)3(s) - AsO43- in specific conditions, which results the highest electroremotion of As(III) at neutral pH.
Idioma original | Inglés estadounidense |
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Páginas (desde-hasta) | 548-560 |
Número de páginas | 13 |
Publicación | International Journal of Electrochemical Science |
Volumen | 6 |
N.º | 3 |
Estado | Publicada - mar. 2011 |
Publicado de forma externa | Sí |
Áreas temáticas de ASJC Scopus
- Electroquímica