Ex-situ bioremediation of Brazilian soil contaminated with plasticizers process wastes

Autor(es)

Ferreira, I. D. ^[1] ; Morita, D. M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Hydraul & Environm Engn Dept, Polytech Sch, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Chemical Engineering; v. 29, n. 1, p. 77-86, JAN-MAR 2012.
• Citações Web of Science: 13

Resumo

The aim of this research was to evaluate the bioremediation of a soil contaminated with wastes from a plasticizers industry, located in São Paulo, Brazil. A 100-kg soil sample containing alcohols, adipates and phthalates was treated in an aerobic slurry-phase reactor using indigenous and acclimated microorganisms from the sludge of a wastewater treatment plant of the plasticizers industry (11gVSS kg-1 dry soil), during 120 days. The soil pH and temperature were not corrected during bioremediation; soil humidity was corrected weekly to maintain 40%. The biodegradation of the pollutants followed first-order kinetics; the removal efficiencies were above 61% and, among the analyzed plasticizers, adipate was removed to below the detection limit. Biological molecular analysis during bioremediation revealed a significant change in the dominant populations initially present in the reactor. (AU)

• Processo FAPESP: 06/50487-0 - Biorremediação de solo tropical contaminado com resíduos da produção de plastificantes
• Beneficiário: Dione Mari Morita
• Modalidade de apoio: Auxílio à Pesquisa - Regular