Date of Award

3-1999

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Systems Engineering and Management

First Advisor

Charles A. Bleckmann, PhD

Abstract

The air transportation industry requires deicing/anti-icing (ADAF) fluids to maintain flight operations in cold weather conditions. Additives to the ADAF aid in the performance of these agents. Approximately 52M liters of concentrated aircraft deicing fluid are used in North America per year in an attempt to correct this safety problem. Among the additives to ADAF are corrosion inhibitors flame retardants, wetting agents, and thickening agents. Some of these agents are known to be toxic to microorganisms. Identification of the transport processes of these agents in the environment is a necessary first step to understanding how to remediate ADAF. Methyl-Benzotriazole (MeBT) is a corrosion inhibitor/flame retardant toxic additive in ADAF. This study investigates the sorption characteristics of MeBT in various soils. Three soil types were used to evaluate the sorption characteristics of MeBT at 1000 mg/L, 100 mg/L, and a mixture of MeBT and propylene glycol (PG). A High Pressure Liquid Chromatograph (HPLC) was used to conduct the recovery experimentation after the samples had reached equilibrium. Resulting sorption coefficients revealed that MeBT did not sorb well to any of the soils types used. The organic carbon content affects the sorption coefficient by slightly raising the sorbed amount of MeBT.

AFIT Designator

AFIT-GEE-ENV-99M-11

DTIC Accession Number

ADA374457

Comments

The author's Vita page is omitted.

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