Soil biodegradation of propylene glycol based aircraft deicing fluids
The discharge of untreated aircraft deicing fluid (ADF) wastes to surface water and stormwater collection systems is largely prohibited in the US, and many airports are searching for alternative methods for managing ADF wastes. A series of soil pan studies were conducted to examine soil biodegradation as a treatment for managing ADF wastes on site. The soil pan studies were designed to evaluate system operating conditions and surface application rates required to enhance biotreatment kinetics and propylene glycol removal. Results indicate that biodegradation of propylene glycol in soil followed first-order kinetics. Soil aeration, lime amendment, and sludge amendment increased the base level'' first-order loss coefficient by as much as a factor of 4. Degradation of propylene glycol to practical quantitation levels was observed in soils receiving ADF solutions of 5, 10, and 20% by weight at corresponding initial propylene glycol concentrations of 7016, 14,032, and 28,064 mg/kg. Biodegradation was severely inhibited when a 40% by weight ADF solution was applied to the soil. A reduced lag phase and increased rate of propylene glycol degradation occurred when ADF solutions in the range of 5 to 10% by weight were reapplied to soils.
- OSTI ID:
- 6428651
- Journal Information:
- Water Environment Research, Journal Name: Water Environment Research Vol. 71:4; ISSN 1061-4303; ISSN WAERED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALCOHOLS
BIODEGRADATION
CHEMICAL REACTIONS
DECOMPOSITION
ENVIRONMENTAL TRANSPORT
GLYCOLS
HYDROXY COMPOUNDS
MANAGEMENT
MASS TRANSFER
ORGANIC COMPOUNDS
POLLUTION
PROCESSING
RUNOFF
SOILS
SURFACE WATERS
WASTE MANAGEMENT
WASTE PROCESSING