摘要 |
Oxyanions of various contaminant elements, such as chromium, antimony, molybdenum, tungsten, vanadium and uranium, are removed from water and other aqueous feeds by treating the feed with (1) a sorbent comprising one or more rare earth compounds, usually mixed or supported on particulate solids having a cation exchange capacity less than 20 milliequivalents per 100 grams or (2) an aqueous solution of one or more soluble rare earth compounds. |
申请人 |
CHEVRON MINING INC.;MCNEW, EDWARD, B.;WITHAM, RICHARD, D.;BURBA, JOHN, L. III |
发明人 |
MCNEW, EDWARD, B.;WITHAM, RICHARD, D.;BURBA, JOHN, L. III |