Sorption influence of chromium, cadmium, nickel and lead in monospecie and multispecie solution in a residual soil from Southern Brazil

Gláucia Carine dos Santos, Eduardo Pavan Korf, Karla Salvagni Heineck, Rafael de Souza Tímbola, Antonio Thomé

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Laboratory Testing

ABSTRACT: The presence of inorganic contaminants in soil has been the subject of many researches, especially when considering the risks that contaminants may cause in the quality of surface water and groundwater. Among these inorganic contaminants there are the toxic metals, which are present in various chemical forms that exhibit different physical and chemical behavior. The aim of this study is to evaluate the sorption influence of different toxic metals present in monospecie and multispecie solutions in a basalt residual soil from southern Brazil. The undeformed specimens were molded and column test were carried out. The tests were performed with solutions percolation containing 5 mg/L of toxic metals Cr3+, Cd2+, Ni2+ and Pb2+, in monospecie and multispecie solution. The total metals concentration was 20 mg/L in multispecie solution. The specimens were divided into five layers and subjected to the 3050B-EPA method for metals extraction. It was possible to find the values of sorption present in each layer subjected to this method. The higher retention capacity in tests submitted to monospecie and multispecie solutions was observed for chromium and the lowest retention capacity was observed for cadmium in monospecie solution and nickel for the multispecies solution. The selectivity sequence for multispecie solution was: Cr>Cd>Pb>Ni.

RESUMEN: La presencia de contaminantes inorgánicos en el suelo ha sido objeto de mucha investigación, especialmente al considerar los riesgos que los contaminantes pueden causar en la calidad de las aguas superficiales y subterráneas. Entre estos contaminantes inorgánicos son los metales tóxicos, los cuales están presentes en diversas formas químicas que presentan diferentes comportamientos físicos y químicos. El objetivo de este estudio es evaluar la influencia de la sorción de diferentes metales tóxicos presentes en soluciones monospecie o multispecie en un suelo residual de basalto del sur de Brasil. Espécimen sin deformar fueron moldados y ensayo de la columna fue ejecutado. Los ensayos se realizaron con la percolación de soluciones que contienen 5 mg/L de los metales tóxicos Cr3+, Cd2+, Ni2+ e Pb2+, en soluciones monospecie y multispecie. La concentración total de metales fue de 20 mg/L en la solución multispecie. Los espécimenes fueron divididos en cinco capas y sometido al método 3050B-EPA para la extracción de los metales. Es posible encontrar los valores de la sorción en cada capa sometida a este método. La capacidad de retención más alta en los ensayos sometidos a soluciones monospecie y multispecie se observó para el cromo y la capacidad de retención más baja se observó para el cadmio en solución monoespecie y níquel para la solución multispecie. La secuencia de selectividad para solución multispecie fue: Cr>Cd>Pb>Ni.

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Cite this article:
Gláucia Carine dos Santos; Eduardo Pavan Korf; Karla Salvagni Heineck; Rafael de Souza Tímbola; Antonio Thomé (2011) Sorption influence of chromium, cadmium, nickel and lead in monospecie and multispecie solution in a residual soil from Southern Brazil in GEO2011. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO11Paper357,author = Gláucia Carine dos Santos; Eduardo Pavan Korf; Karla Salvagni Heineck; Rafael de Souza Tímbola; Antonio Thomé ,title = Sorption influence of chromium, cadmium, nickel and lead in monospecie and multispecie solution in a residual soil from Southern Brazil ,year = 2011}