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The Studying of Washing of Arsenic and Sulfur from Coals Having Different Ranges of Arsenic Contents
Author(s) -
Wang Mingshi,
Song Dangyu,
Zheng Baoshan,
Finkelman R.B.
Publication year - 2008
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1454.018
Subject(s) - arsenic , sulfur , chemistry , environmental chemistry , coal , organic chemistry
To study the effectiveness of washing in removal of arsenic and sulfur from coals with different ranges of arsenic concentration, coal was divided into three groups on the basis of arsenic content: 0–5.5 mg/kg, 5.5 mg/kg–8.00 mg/kg, and over 8.00 mg/kg. The result shows that the arsenic in coals with higher arsenic content occurs mainly in an inorganic state and can be relatively easily removed. Arsenic removal is very difficult and less complete when the arsenic content is lower than 5.5 mg/kg because most of this arsenic is in an organic state. There is no relationship between washing rate of total sulfur and arsenic content, but the relationship between the washing rate of total sulfur and percent of organic sulfur is very strong.