Artículos de revistas
EX-SITU BIOREMEDIATION OF BRAZILIAN SOIL CONTAMINATED WITH PLASTICIZERS PROCESS WASTES
Fecha
2012Registro en:
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING, SAO PAULO, v. 29, n. 1, supl., Part 2, pp. 77-86, JAN-MAR, 2012
0104-6632
10.1590/S0104-66322012000100009
Autor
Ferreira, I. D.
Morita, D. M.
Institución
Resumen
The aim of this research was to evaluate the bioremediation of a soil contaminated with wastes from a plasticizers industry, located in Sao 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.