Process using rare earths to remove oxyanions from aqueous streams

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PROCESS USING RARE EARTHS TO REMOVE OXYANIONS FROM AQUEOUS STREAMS ABSTRACT OF THE DISCLOSURE 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 (i) 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 I00 grams or (2) an aqueous solution of one or more soluble rare earth compounds.