Abstract
This chapter describes the research that was undertaken to ascertain the ability of energy dispersive X-ray fluorescence (EDXRF) analysis to determine trace element content of solvent refined coal (SRC). Rapid simultaneous quantitative analysis of a large number of elements is possible with EDXRF. In this research, around 17–20 elements were quantitatively analyzed in both raw feed coal and product SRC from the Wilsonville SRC Pilot Plant, Wilsonville, Alabama. It has been known that EDXRF is capable of analyzing coal and SRCs for elemental content. These analyses provide simultaneous results for several important elements, namely, sulfur, iron, and calcium, in addition to percent ash and liquefaction yield. These analyses presently take well over 2 hr per sample to complete, but by using EDXRF, this time can be reduced to about 1 hr per sample. EDXRF has an added feature in that it may be automated, leading to even shorter analysis times per sample. Thus, EDXRF can be concluded to be an effective tool that can provide very accurate and rapid analyses of trace elements in coals and SRC product.
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