ALTERNATIVE FOR PHENOL BIODEGRADATION IN OIL CONTAMINATED WASTEWATERS USING AN ADAPTED BACTERIAL BIOFILM LAYER
Journal Title: UNKNOWN - Year 2008, Vol 20, Issue 1
Abstract
The project studied the biodegradation potential of phenols in an industrial wastewater from an oil field in the province of Santander, Colombia. An elevated potential was established, according to three important factors: the great abundance of microorganisms found in the wastewater and sludge samples collected, the bacterial adaptation to high phenol concentrations (10 mg/l) and the elevated elimination efficiencies (up to 86%) obtained in the laboratory tests. The laboratory scale treatment system, which consisted of fixed-bed bioreactors with adapted bacterial biofilm, was optimized using a 22 factorial experimental design. The selected variables, studied in their maximum and minimum level were: HRT (hydraulic retention time) and the presence or absence of GAC (granular activated carbon) layer. The response variable was phenol concentration. The optimum treatment conditions for low and high phenol concentrations (2.14 y 9.30 mg/l), were obtained with the presence of GAC and 18 hours of HRT. The best result for the intermediate phenol concentration (6.13 mg/l) was obtained with a 24 hour HRT and the presence of GAC. Nevertheless, the presence of the GAC layer was not significantly important in terms of phenol removal. Moreover, the increase of HRT from 18 to 24 hours, showed no significant improvement in phenol removal.
Authors and Affiliations
Luz A. P. Jacome
Keywords
Related Articles
- EP ID EP29990
- DOI -
- Views 279
- Downloads 1
UNCERTANITIES AND RISK IN GEOLOGICAL ACTIVITIES AND NEW WAYS OF THEIR HANDLING
The authors rewiev the main types of uncertainties occuring in connection with geological investigations. The general concept of handling these uncertainties are outlined. The particular features of scalar, spatial and s...
COMPOSITION AND PROVENANCE OF GRÖDEN SANDSTONE FROM THE VELEBIT MTS.
Six samples of Gröden sandstones (Middle Permian) were analysed: Five of them were from Pikovac Creek valley (in the vicinity of Brušane village at Velebit Mts., Croatia) and one was from the locus typicus Gröden/Val Gar...
Sadašnje spoznaje o ispitivanju vlačne čvrstoće stijena uporabom brazilskoga testa
Vlačna čvrstoća u mehanici stijena svojstvo je koje se znatno češće određuje indirektno (neizravno) nego direktno (izravno). U ovome radu prikazan je povijesni pregled razvoja indirektne metode ispitivanja zvane brazils...
POSSIBILITIES OF THE EFFICIENT SOLID-LIQUlD SEPARATION IN THE HYDROCYCLONE OF 25 mm DIAMETER
The hydrocyclone, of 25 mm diameter has been tested on the laboratory hydrocyclonic device. There have been varied the values of relationship between Du/Do the concentration of feed suspension and the greatness of pressu...
FORMATE-BASED FLUIDS: FORMULATION AND APPLICATION
Formate-based fluids has been successfully used in over hunders HPHT well operations since they introduced in field practice. They have many advantages when compared with conventional HPHT drilling and completion fluids...