Removal of polychlorinated phenols in sequential anaerobic-aerobic biofilm reactors packed with tire chips
Scrap vehicle tire chips were used as packing material for sequential anaerobic-aerobic biofilm reactors to remove persistent chlorinated hydrocarbons. Adsorption capacity of scrap tires was greater under acidic conditions than under basic conditions. However, it was only approximately 0.04 to 0.3% of that of activated carbon. The amount of biomass that attached to the surface of scrap tires was 3.16 and 3.72 mg volatile suspended solids/cm{sup 2} after 14 and 37 days, respectively. Two laboratory-scale, down-flow anaerobic-aerobic biofilm reactors packed with tire chips were operated to remove 2,4-dichlorophenol (DCP) and 4-chlorophenol (CP). More than 98% of DCP was dehalogenated to CP in the anaerobic reactor, 70 to 98% of which was subsequently degraded in the aerobic reactor. Scrap tires did not cause any operational problems when used as biofilter media.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 354319
- Journal Information:
- Water Environment Research, Vol. 71, Issue 3; Other Information: PBD: May-Jun 1999
- Country of Publication:
- United States
- Language:
- English
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