Anais do XXXIV Congresso Brasileiro de Ciência do Solo

PHYTOREMEDIATION OF SOILS CONTAMINATED BY ORGANIC SOLVENTS USING PINUS TAEDA AND EUCALYPTUS UROGRANDIS TREES (GREENHOUSE STUDY)

DIEGO BARCELLOS⁽¹⁾; LAWRENCE MORRIS⁽²⁾; TIAGO MOURA⁽³⁾; LUCAS A. SILVA⁽⁴⁾; AARON THOMPSON⁽¹⁾;
1 - UNIVERSITY OF GEORGIA (EUA); 2 - UNIVERSITY OF GEORGIA; 3 - NEWFIELDS COMPANY; 4 - UNIVERSIDADE FEDERAL DE VIÇOSA;

Phytoremediation is an emerging cost-effect remediation technology. We are assessing the potential of trees to phytoremediate the soils on an industrial site in southern Brazil, contaminated by chlorobenzene/benzene. The objectives of this study are to evaluate the survivorship of plants under pollutant exposure, and to assess the change in pollutant concentration when exposed to plants grown in the greenhouse. First, we exposed Pinus taeda to a range of contaminant concentrations, and no mortality was observed for any treatment. Second, we conducted a greenhouse experiment using Eucalyptus, Pinus, and a non-planted control placed on pots containing washed sand. A solution containing benzene/chlorobenzene were added to each pot, the leachate was collected daily, and then analyzed on GC/MS equipment. Preliminary results suggest that plants increase degradation of these contaminants. We will next evaluate the use of Eucalyptus to phytoremediate these pollutants at the Site in Brazil.

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