Role of fly ash in catalytic oxidation of sulfur(IV) slurries

Journal Article · Tue Dec 01 00:00:00 EST 1981 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es00094a013· OSTI ID:1134586

Cohen, Sidney; Chang, Shih Ger.; Markowitz, Samuel S.; Novakov, Tihomir

The rate of catalytic oxidation of S(IV) in aqueous fly ash slurries has been examined by monitoring loss of SO{sub 3}{sup 2-} and O{sub 2}, and SO{sub 4}{sup 2-} formation. Evidence from both filtering and extraction studies indicates that dissolved iron which has been leached from the ash is the chief catalyst. This homogeneous reaction dominates any catalytic effect of the ash surface.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Environmental Energy Technologies Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 1134586
• Report Number(s): LBL-11944
• Journal Information: Environmental Science and Technology, Vol. 15, Issue 12; ISSN 0013-936X
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY