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Removal of Polychlorinated Phenols in Sequential Anaerobic–Aerobic Biofilm Reactors Packed with Tire Chips
Author(s) -
Shin HangSik,
Yoo KyuSeon,
Park Jae K.
Publication year - 1999
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143097x122211
Subject(s) - scrap , anaerobic exercise , chemistry , waste management , biofilter , bioreactor , pulp and paper industry , biodegradation , packed bed , biofilm , volatile suspended solids , wastewater , chemical oxygen demand , chromatography , organic chemistry , bacteria , physiology , engineering , biology , genetics
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 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.