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This report documents liquid low-level waste (LLLW) generation from 1986 through mid-1990. The report was written and submitted in draft form in 1990; however, it was not published in final form. Information contained within the report is accurate for the time it was written; however, several changes have been incurred in the LLLW system since that time. The report has not been updated to reflect these changes but is submitted as is to serve as a companion to report ORNI.Ff'MJ12638,

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Natural chabazite zeolite was selected as the baseline treatment technology for the removal of fission products, namely ? 3 r and 137Cs, from near-neutral-pH process wastewater and groundwater. The sorbent IONSW IE-9 1 1, a crystalline silicotitanate manufactured by UOP, was recently tested in this capacity and found to compare extremely well against the baseline material. This paper presents and compares the results of similar batch and column tests performed using both materials, and summarizes the physical and chemical characteristics of the sorbents.