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The reduction of aqueous metal species on the surfaces of Fe(II)-containing oxides: The role of surface passivation

January 1, 1998

The reduction of aqueous transition metal species at the surfaces of Fe(II)- containing oxides has important ramifications in predicting the transport behavior in ground water aquifers. Experimental studies using mineral suspensions and electrodes demonstrate that structural Fe(II) heterogeneously reduces aqueous ferric, cupric, vanadate and chromate ions on magnetite and ilmenite surfaces. The rates of metal reduction on natural oxides is strongly dependent on the extent of surface passivation and redox conditions in the weathering environment. Synchrotron studies show that surface oxidation of Fe(II)-containing oxide minerals decreases their capacity for Cr(VI) reduction at hazardous waste disposal sites.

Publication Year 1998
Title The reduction of aqueous metal species on the surfaces of Fe(II)-containing oxides: The role of surface passivation
DOI 10.1021/bk-1998-0715.ch016
Authors A. F. White, M. L. Peterson
Publication Type Article
Publication Subtype Journal Article
Series Title ACS Symposium Series
Index ID 70020170
Record Source USGS Publications Warehouse
USGS Organization National Research Program - Western Branch