KUMPIENE, Jurate; ORE, Solvita; RENELLA, Giancarlo; MENCH, Michel; MAURICE, Christian

doi:10.1016/j.envpol.2006.01.010

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Licencia de uso del documento

KUMPIENE, Jurate
Division of Waste Science and Technology

ORE, Solvita
Division of Waste Science and Technology

RENELLA, Giancarlo
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]

Idioma

Communication dans un congrès

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8th International Conference on the Biogeochemistry of Trace Elements, 2005-04-07, Adelaide. 2006

Resumen en inglés

Stabilization of soil contaminated with trace elements is a remediation practice that does not reduce the total content of contaminants, but lowers the amounts of mobile and bioavailable fractions. This study evaluated the efficiency of Fe0 to reduce the mobility and bioavailability of Cr, Cu, As and Zn in a chromated copper arsenate (CCA)-contaminated soil using chemical, biochemical and biotoxicity tests. Contaminated soil was stabilized with 1% iron grit. This treatment decreased As and Cr concentrations in leachates (by 98% and 45%, respectively), in soil pore water (by 99% and 94%, respectively) and in plant shoots (by 84% and 95%, respectively). The stabilization technique also restored most of analyzed soil enzyme activities and reduced microbial toxicity, as evaluated by the BioTox™ test. After stabilization, exchangeable and bioaccessible fractions of Cu remained high, causing some residual toxicity in the treated soil< Leer menos

Palabras clave

CCA

Palabras clave en inglés

LEACHING

SEQUENTIAL EXTRACTION

TOXICITY

CHROMATED COPPER ARSENATE

SOIL ENZYME ACTIVITY

METHODOLOGIE