Alternative Aircraft Anti-Icing Formulations with Reduced Aquatic Toxicity and Biochemical Oxygen Demand (2010) / Chapter Skim
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Pages 89-92
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From page 89... ...
6-1 SECTION 6 DEGRADATION PATHWAYS FOR DOWNSELECTED DEICER COMPONENTS Although each candidate component was carefully screened for environmental impact, it is possible that their degradation products could have significant effects. For example, nonylphenol ethoxylate surfactants have a much lower environmental impact than does nonylphenol, one of their degradation products.
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From page 90... ...
ALTERNATIVE AIRCRAFT ANTI-ICING FORMULATIONS 6-2 The aldehyde is then converted to a carboxylate: HO-CH2-CH2-O-CH2-C(O-) =O These two reaction steps are repeated for DEG's remaining hydroxide to produce a dicarboxylate: O=(-O)
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From page 91... ...
SECTION 6 -- 5BDEGRADATION PATHWAYS FOR DOWN-SELECTED DEICER COMPONENTS 6-3 TABLE 6-1. Toxicity of Tergitol L-64 degradation products.
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From page 92... ...
ALTERNATIVE AIRCRAFT ANTI-ICING FORMULATIONS 6-4 TABLE 6-2. Toxicity of TEA and its degradation products.
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