The importance of abiotic mechanisms to bioavailability in slurry reactor treatment
Conference
·
OSTI ID:210551
- Environmental Protection Agency, Cincinnati, OH (United States)
Bench-scale slurry bioreactor treatability studies were conducted to assess operating factors leading to foam formation and identify the most advantageous means to deal with foaming. A soil from a site contaminated with polycyclic aromatic hydrocarbons was used in six reactors loaded at 30% solids. Two reactors were permitted to develop foam, two reactors contained a defoamer, and two reactors used formaldehyde to suppress biological activity. The study showed little foam formation, in contrast to a previous treatability study. Decreased form formation in this study may have been due to a coarser soil and a decreased air flow rate. In addition, the bench-scale study may exaggerate the abiotic fate mechanisms due to high surface to volume ratio considerations. The concentration effects associated with foam formation indicate that foam removal may be desirable to optimize slurry reactor performance.
- OSTI ID:
- 210551
- Report Number(s):
- CONF-9509139--
- Country of Publication:
- United States
- Language:
- English
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