Health & Environmental Research Online (HERO)


Print Feedback Export to File
8733085 
Journal Article 
Production of CO2 in crude oil bioremediation in clay soil 
Baptista, SJ; Cammarota, MC; De Carvalho Freire, DD 
2005 
Yes 
Brazilian Archives of Biology and Technology
ISSN: 1516-8913
EISSN: 1678-4324 
48 
SPEC. ISS. 
249-255 
English 
WOS:000231310000032 
The aim of the present work was to evaluate the biodegradation of petroleum hydrocarbons in clay soil a 45-days experiment. The experiment was conducted using an aerobic fixed bed reactor, containing 300g of contaminated soil at room temperature with an air rate of 6 L/h. The growth medium was supplemented with 2.5% (w/w) (NH4)2SO4 and 0.035% (w/w) KH 2PO4. Biodegradation of the crude oil in the contaminated clay soil was monitored by measuring CO2 production and removal of organic matter (OM), oil and grease (OandG), and total petroleum hydrocarbons (TPH), measured before and after the 45-days experiment, together with total heterotrophic and hydrocarbon-degrading bacterial count. The best removals of OM (50%), OandG (37%) and TPH (45%) were obtained in the bioreactors in which the highest CO2 production was achieved. 
Biostimulation; Clay soil; Crude oil