Biodegradation of polycyclic aromatic hydrocarbons in a two-liquid-phase system
- Univ. of Ghent (Belgium). Centre for Environmental Sanitation
- Soils N.V., Zwijndrecht (Belgium)
The use of a two-liquid-phase system consisting of silicone oil and water for biodegrading polycyclic aromatic hydrocarbons (PAHs) was investigated. Biomass determinations indicated that the cells were mainly growing at the silicon oil-water interface. In shaken and aerated systems with PAHs and inoculum, 97% and 80%, respectively, of the total biomass was attached to the silicone phase. PAH concentrations in the silicon phase dropped by a factor 2 to 100 when microorganisms were present. Biodegradation rates in these systems varied from 3.6 to 5 mg PAH-C/L reactor{center_dot}d. In the shaken systems at 28 C, the measured CO{sub 2} production rate was equal to 9.1 mg CO{sub 2}/L reactor{center_dot}d and corresponded to a 50% conversion to CO{sub 2}. In the aerated systems at 10 C, however, only 25% of the PAH-C was converted to CO{sub 2}, resulting in a CO{sub 2} production rate of 0.5 mg CO{sub 2}/L reactor{center_dot}d.
- OSTI ID:
- 490970
- Report Number(s):
- CONF-950483-; ISBN 1-57477-008-X; TRN: IM9729%%221
- Resource Relation:
- Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Bioremediation of recalcitrant organics; Hinchee, R.E.; Anderson, D.B. [eds.] [Battelle Memorial Inst., Columbus, OH (United States)]; Hoeppel, R.E. [ed.] [Naval Facilities Engineering Services Center, Port Hueneme, CA (United States)]; PB: 378 p.; Bioremediation, Volume 3(7)
- Country of Publication:
- United States
- Language:
- English
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