Document Type
Thesis
Date of Award
1-31-1991
Degree Name
Master of Science in Environmental Science - (M.S.)
Department
Chemical Engineering, Chemistry and Environmental Science
First Advisor
Joseph W. Bozzelli
Second Advisor
Richard B. Trattner
Third Advisor
Barbara B. Kebbekus
Abstract
The purpose of this research was to determine the feasibility of removing organic contaminants from sand by thermal desorption. A continuous feed rotary kiln was designed and constructed to study the thermal desorption behavior of organic contaminant from sand with respect to temperature and residence time, and to develop a mathematical model that will describe this desorption behavior. The model will allow prediction of the desorption rate of an organic contaminant in larger scale rotary kiln desorption system over temperature at a known set of residence time.
In this experiment, sand was uniformly contaminated with a known amount of organic compound and fed into a rotary kiln operating at a predetermined temperature and residence time with a constant purge gas flow. The analysis of the contaminated sand and the desorbed sand were both extracted with solvent and analyzed for contaminated level by a Gas Chromatograph (GC) equipped with a flame ionization detector (FID).
Each investigation was done at different temperatures, and, from these experiments an engineering equation was developed where the resistance time needed for removal can be predicted for any given temperature of system operation. The result showed that the rate of desorption from sand of 1-dodecene increased with increases in temperature as shown in the following mathematical relationship :
In (Ci/Co) = - k * T + Di
Recommended Citation
Chern, Hsien-Tsung, "Thermal desorption of organic contaminant from sand using a continuous feed rotary kiln" (1991). Theses. 2464.
https://digitalcommons.njit.edu/theses/2464
