Thesis
Development of a novel environmentally friendly starch-based aircraft deicer
Washington State University
Master of Science (MS), Washington State University
2010
Handle:
https://hdl.handle.net/2376/100664
Abstract
Aircraft deicing currently relies upon glycol-based deicers which exert significant biochemical oxygen demand and toxicity to receiving waters. A product derived from oxidized corn and potato starch was investigated as an alternative to glycol-based deicers. Freezing point depression ranged from 19.7 to 28 ̊C and viscosities similar to those of commercially available deicing products were obtained when oxidized starch formulations were post-treated with granular activated carbon. The product exhibited a five day biological oxygen demand between 20% and 50% that of glycol-based deicers. However, the LC50 to Ceriodaphnia dubia was 2.73 g/L which is greater than glycolbased deicers (18.3 g/L for propylene glycol and 34.4 g/L for ethylene glycol). Corrosion testing indicated compatibility with aerospace materials in most cases. Organic acids were identified by gas chromatography/mass spectrometry as the primary constituents in the pretreated starch solution and their sodium salts are likely responsible for freezing point depression. The results represent an important step towards development of more environmentally benign deicing products.
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Details
- Title
- Development of a novel environmentally friendly starch-based aircraft deicer
- Creators
- Joseph Matthew Plahuta
- Contributors
- Richard J. Watts (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; Pullman, Wash. :
- Identifiers
- 99900525055801842
- Language
- English
- Resource Type
- Thesis