Removal of Cu{sup 2+}, Cd{sup 2+} and Mn(VII) from dilute, aqueous solutions by oxidized bituminous coal
- Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering
The ability of oxidized Upper Freeport bituminous coal to adsorb Cu{sup 2+}, Cd{sup 2+} and MN(VII) from very dilute aqueous solutions has been studied. Low-rank coal is known to adsorb heavy metal ions from dilute, aqueous solutions, probably by ion exchange and/or chelation by acidic functional groups on the coal surface. However, it would be advantageous to use higher rank coals for water treatment. Coal samples were oxidized thermally or by 30% H{sub 2}O{sub 2} to increase the surface concentration of phenolic and carboxylic groups, then portions were shaken with Cu{sup 2+} and Cd{sup 2+} solutions. Acidic KMnO{sub 4} was also used to oxidize coal, with concurrent sorption of the resulting MN(IV) and Mn(II). The effect of oxidation treatment, metal ion concentration, and solution pH on metal uptake kinetics was investigated. Potential applications for treating effluents, especially those containing oxidizing ions, are discussed, along with possible flowsheet options.
- DOE Contract Number:
- FG22-90PC90287
- OSTI ID:
- 72824
- Report Number(s):
- CONF-950201-; ISBN 0-87339-287-6; TRN: IM9530%%316
- Resource Relation:
- Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Las Vegas, NV (United States), 12-16 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Treatment and minimization of heavy metal-containing wastes 1995; Hager, J.P.; Mishra, B. [eds.] [Colorado School of Mines, Golden, CO (United States)]; Davidson, C.F. [ed.] [Bureau of Mines, Salt Lake City, UT (United States)]; Litz, J.L. [ed.] [IC Technologies, Wheat Ridge, CO (United States)]; PB: 272 p.
- Country of Publication:
- United States
- Language:
- English
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