X-ray powder diffraction, scanning electron microscopy and energy dispersive spectroscopy studies of soil containing chromium immobilized by microwave treatment
Department of Chemical Engineering, Chemistry and Environmental Science
Master of Science
Schuring, John R.
Cheng, Su Ling
Scanning electron microscopes
The orientation of soil contaminants such as chromium is altered during microwave heating. The SEM and EDS were utilized in the study. The nature of the orientation is related to the heating time. This results in immobilizing the contaminant in leaching tests. The non-leachibility was related to the reactivity of the chromium salt with the soil hematite phase (Fe2O3) during the microwaving. This was proved By the X-ray diffraction analysis. The spectrums obtained from 30 and 60 minutes microwaved samples were identical in the crystal phases and were significantly different from the contaminated unheated sample.
njit-etd1990-012 (236 pages ~ 38,519 KB pdf)
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Created April 7, 2004