Chemical coal beneficiation with aqueous hydrogen peroxide/sulfuric acid solutions

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:5263960

Vasilakos, N P; Clinton, C S

The removal of sulfur and ash from coal treated with aqueous hydrogen peroxide/sulfuric acid solutions at ambient temperature was studied under a variety of experimental conditions. Almost complete elimination of the sulfate and the pyritic sulfur was observed in most cases, as well as substantial reduction in the ash content. The rest of the organic coal matrix was not affected to any significant extent, indicating a high selectivity of the H/sub 2/O/sub 2//H/sub 2/SO/sub 4/ system towards sulfur oxidation. An optimal H/sub 2/SO/sub 4/ concentration level was established, beyond which sulfuric acid was found to have an adverse effect on the oxidation of pyrite by hydrogen peroxide. The oxidative desulfurization of model organosulfur compounds, such as t-butyl sulfide, phenyl sulfide and dibenzothiophene, by the H/sub 2/O/sub 2//H/sub 2/SO/sub 4/ system was also investigated.

• Research Organization: Univ. of Texas, Austin
• OSTI ID: 5263960
• Report Number(s): CONF-830814-Vol.3
• Journal Information: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 28:4; ISSN ACFPA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
ASHES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL PREPARATION
DEASHING
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
INORGANIC ACIDS
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
REMOVAL
RESIDUES
SULFUR
SULFURIC ACID