Low temperature biodegradation of airport de-icing fluids.

Revitt, D. Mike and Worrall, P. (2003) Low temperature biodegradation of airport de-icing fluids. Water Science and Technology, 48 (9). pp. 103-111. ISSN 0273-1223

Full text is not in this repository.

This item is available in the Library Catalogue

Abstract

The biodegradabilities of glycol- and acetate-based aircraft de-icing fluids on airport surfaces have been investigated at three temperatures between 0°C and 10°C. The aqueous solubilities of these substances can result in high BOD loadings in runoff and pose serious toxicity problems in receiving waters. The measured surface biodegradation rates for de-icing products based on ethylene/diethylene glycol (Konsin), propylene glycol (Kilfrost) and potassium acetate (Clearway) at 4°C were 0.082, 0.073 and 0.033 day-1. The resulting reductions in the potential BOD loadings, of a single application of a typical mixture of these products, over a 5 day biodegradation period are predicted to be 32.9%, 30.2% and 21.4%, respectively at 8°C, 4°C and 1°C. For consecutive daily applications, the comparable cumulative reductions over 5 days are 20.8%, 18.9% and 13.3%. The subsequent savings in the amount of treatment required for airport runoff prior to safe discharge to receiving waters are discussed and hence the relevance of surface biodegradation processes to the design of stormwater treatment systems involving the wash-off of biodegradable pollutants following retention on urban surfaces.

Item Type:Article
Research Areas:Middlesex University Schools and Centres > School of Science and Technology > Natural Sciences
Citations on ISI Web of Science:8
ID Code:3832
Useful Links:
Deposited On:25 Jan 2010 10:59
Last Modified:24 Nov 2014 13:38

Repository staff only: item control page

Full text downloads (NB count will be zero if no full text documents are attached to the record)

Downloads per month over the past year