Permeable Barrier Materials for Strontium Immobilization: - UFA Determination of Hydraulic Conductivity. - Column Sorption Experiments
Abstract
Selected materials were tested to emulate a permeable barrier and to examine the: (1) capture efficiency of these materials relating to the immobilization of strontium-90 and hexavalent chromium in Hanford groundwater, and (2) hydraulic conductivity of the barrier material relative to the surrounding area. The emplacement method investigated was a permeable reactive barrier to treat contaminated groundwater as it passes through a barrier. The hydraulic conductivity function was measured for each material, and retardation column experiments were performed for each material. Measurements determining the hydraulic conductivity at unsaturated through saturated water content were executed using the Unsaturated Flow Apparatus (UFA). The materials tested were North Carolina phosphate rock (NC apatite); reagent grade hydroxyapatite; bone char; a clean, processed quartz sand; Soda Springs phosphate rock; and fish debris. Ash Meadows clinoptilolite was also tested since it is currently being considered for use as a permeable barrier at N-Springs.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1996
- Accession Number
- ADA349316
Entities
People
- J. Conca
- T. E. Moody