thumbnail

Abundance and modes of occurrence of mercury in some low-sulfur coals from China

International Journal of Coal Geology

By:
, ,
DOI: 10.1016/j.coal.2007.05.002

Links

Abstract

Mercury (Hg) is one of the hazardous trace elements in coal. Mercury in coal is almost totally emitted into the atmosphere during coal combustion. Especially for utilities burning low-sulfur coals that do not require scrubbers, Hg reduction will be neglected. Hg abundances of 52 low-sulfur coal samples from different coalfields in six provinces of China were determined by a flow injection mercury system (FIMS). The results show that Hg abundances in selected low-sulfur coals range from 0.03??ppm to 0.79??ppm, with an arithmetic mean of 0.24??ppm, which is higher than that of average Chinese coals (0.19??ppm). Correlation analysis and sequential extraction procedures are performed to study possible modes of occurrence of Hg in low-sulfur coals. Modes of occurrence of Hg are variable in low-sulfur coals, and the sulfide-bound and organic-bound Hg may be the dominant forms. In addition, the silicate-bound Hg may be the main form in some of these coals because of magmatic intrusion. ?? 2007 Elsevier B.V. All rights reserved.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Abundance and modes of occurrence of mercury in some low-sulfur coals from China
Series title:
International Journal of Coal Geology
DOI:
10.1016/j.coal.2007.05.002
Volume
73
Issue:
1
Year Published:
2008
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
International Journal of Coal Geology
First page:
19
Last page:
26
Number of Pages:
8