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Portugaliae Electrochimica Acta

Print version ISSN 0872-1904

Port. Electrochim. Acta vol.22 no.4 Coimbra  2004

 

Integral Analysis of the Process of Electro-Remediation of Andisols Polluted by Heavy Metals

 

M.V. Vázquez,a,* F. Hernández-Luis,b M. Lemus,b C.D. Arbeloc

 

a)Instituto de Química (Electrochemical Group), Faculty of Exact and Natural Sciences, Universidad de Antioquia, A.A.1226, Medellín, Colombia.

b)Department of Physical Chemistry, Universidad de la Laguna, Tenerife, España.

c)Department of Soil Science and Geology, Universidad de La Laguna, Tenerife, España.

 

Received 25 March 2004; accepted 15 June 2004

 

 

Abstract

An integral analysis was carried out on the results obtained in laboratory experiments on electro-remediation of soils using two heavy metal-contaminated volcanic soils from the region of Antioquia, Colombia. Measurements of pH, conductivity, and pollutant concentration were made on each soil. The results were related to the structural characteristics of the soils employed in the experiments. Under the present experimental conditions it was shown that the soil with the lower concentration of organic matter had a lower pH regulatory capacity, that treatment without using wash solutions was more efficient for the mobilization of the metals, and that the particular characteristics of each soil conditioned the efficiency of the treatment.

 

Keywords: andisols, soil pollution, electro-remediation, heavy metals, regulatory capacity.

 

Análisis Integral del Proceso de Electro-Remediación de Andisoles Contaminados con Metales Pesados

Resumen

Se realizó un análisis integral de los resultados obtenidos en experimentos de electro-remediación en laboratorio para dos suelos volcánicos de la región de Antioquia (Colombia), contaminados con metales pesados.

Para los estudios se analizaron conjuntamente medidas de pH, conductividad y concentración de contaminantes. Los resultados fueron relacionados con las características estructurales de los suelos empleados en los experimentos. Se comprobó que, para las condiciones experimentales empleadas, el suelo con menor contenido de materia orgánica, presenta una menor capacidad reguladora de pH, que el tratamiento sin emplear soluciones de lavado presenta mayor eficiencia para la movilización de los metales y que las características de los suelos son las que condicionan la eficacia tratamiento.

Palabras clave: andisoles, contaminación de suelos, electro-remediación, metales pesados, capacidad reguladora.

 

 

Texto completo disponível apenas em PDF.

Full text only available in PDF format.

 

 

References

1. H.E. Allen, C.P. Huang, G.W. Bailey, A.R. Bowers, “Metal Speciation and Contamination of Soil”, Lewis Publishers, CRC Press, 1995.        [ Links ]

2. M.V. Vázquez, D.A. Tobón, Afinidad 58 (2001) 437.        [ Links ]

3 M.M. Page, C.L. Page, J. Environm. Eng. (2002) 208.        [ Links ]

4. M.V. Vázquez, D.A. Tobón, F.L. Gutiérrez, Afinidad 59 (2002) 601–604.         [ Links ]

5. M.V. Vázquez, F. Hernández-Luis, Innovación 15 (2003) 45.        [ Links ]

6. S. Chinthamreddy, K. Reddy, J. Soil Contamination 8 (1999) 197.        [ Links ]

7. S. Pamukcu, A. Weeks, J. Wittle, J. Hazardous Mater. 55 (1997) 305.        [ Links ]

8. K. Reddy, S. Chinthamreddy, Waste Management 19 (1999) 269.        [ Links ]

9. K. Reddy, S. Chinthamreddy, A. Al-Hamdan, Remediation (2001) 85.        [ Links ]

10. K. Reddy, M. Donahue, R. Saichek, R. Sasaoca, J. Air Waste Manag. Assoc. 99 (1999) 823.        [ Links ]

11. K. Reddy, U. Parupudi, S. Devulapalli, C. Xu, J. Hazardous Mater. 55 (1997) 135.        [ Links ]

12 K. Reddy, A.B. Shirani, Geotech. Geolog. Eng. 15 (1997) 3.        [ Links ]

 

* Corresponding author. E-mail address: mvazquez@matematicas.udea.edu.co.

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