Development of Environmentally Benign and Reduced Corrosion Runway Deicing Fluid
Final rept. Jul 2006-Dec 2008
BATTELLE MEMORIAL INST COLUMBUS OH
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Six runway deicing fluids RDFs were certified under AMS 1435 and met or exceeded other key deicing performance and materials compatibility criteria. Simultaneous property improvements and RDF cost reduction was due to the use of low-cost, bio-based ingredients. A major concern with potassium acetate KAc and other organic-salt RDFs is their aggressive attack on carbon brakes, due to catalytic oxidation, cadmium-plated parts, and some other materials. Battelle-RDFs are dramatically better than KAc RDFs with respect to compatibility with carbon brakes, cadmium-plated parts, and cast magnesium alloys. Battelle-RDFs were typically 75 less reactive to carbon, thus projected to improve brake life from one year to about four years. Battelle-RDFs have less than half the toxicity of currently used RDFs due to elimination of toxic corrosion inhibitors. A cost-benefit analysis of preferred Battelle-RDFs showed that they were not only cheaper than RDFs based on KAc or KAcpropylene glycol, bust also reduced aircraftairport maintenance costs. The combined annual savings for US application alone was projected to be 20M to 55M.
- Terminal Flight Facilities
- Environmental Health and Safety