RT journal article
T1 Combined strategy for the precipitation of heavy metals and biodegradation of petroleum in industrial wastewaters
A1 Pérez, Rosa María
A1 Cabrera Revuelta, Gema
A1 Gómez Montes de Oca, José Manuel
A1 Cantero Moreno, Domingo
A2 Ingeniería Química y Tecnología de Alimentos
K1 Pseudomonas aeruginosa
K1 Desulfovibrio sp
K1 Biodegradation
K1 Heavy metal
K1 Petroleum
AB The precipitation of chromium(III), copper(II), manganese(II) and zinc(II) by biogenic hydrogen sulfidegenerated by sulfate-reducing bacteria, Desulfovibrio sp., and the degradation of total petroleum hydrocarbons(TPH) in the presence of heavy metal by Pseudomonas aeruginosa AT18 have been carried out. Ananaerobic stirred tank reactor was used to generate hydrogen sulfide with Desulfovibrio sp. culture andthe precipitation of more than 95% of each metal was achieved in 24 h (metal solutions contained: 60,49, 50 and 80mgL−1 of chromium, copper, manganese and zinc sulfates). A stirred tank reactor with P.aeruginosa AT18, in the presence of the heavy metal solution and 2% (v/v) of petroleum, led to the degradationof 60% of the total petroleum hydrocarbons and the removal of Cr(III) 99%, Cu(II) 93%, Zn(II) 46%and Mn(II) 88% in the medium through biosorption phenomena. These results enabled the developmentof an integrated system in which the two processes were combined. The overall aim of the study wasachieved, with 84% of TPH degraded and all of the metals completely removed. Work is currently underwayaimed at improving this system (decrease in operation time, culture of P. aeruginosa in anaerobicconditions) in an effort to apply this process in the bioremediation of natural media contaminated withheavy metals and petroleum.
PB Elsevier
SN 0304-3894
YR 2010
FD 2010-01-01T00:00:00Z
LK http://hdl.handle.net/10498/16311
UL http://hdl.handle.net/10498/16311
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026