Fiscal Year 2019 Filtration of Hanford Tank AP-107 Supernatant

Technical Report · Mon Aug 19 04:00:00 EDT 2019

DOI:https://doi.org/10.2172/1560138· OSTI ID:1560138

Geeting, John G.H. ^[1]; Allred, Jarrod R. ^[1]; Rovira, Amy M. ^[1]; Peterson, Reid A. ^[1]

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1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Bench-scale filtration testing of 9 liters of 241-AP-107 supernatant was conducted using two different filters in the hot cells of the Radiochemical Processing Laboratory at Pacific Northwest National Laboratory. The following filters were tested: (1) Mott inline filter Model 6480 (media grade 5) (also known as the backpulsed dead-end filter, BDEF) (2) Mott 70-mm disc filter (media grade 5) (also known as the dead-end filter, DEF) The BDEF was used to filter approximately 7 liters of AP-107 at a targeted flux of 0.065 gpm/ft² and exhibited no measurable pressure increase during filtration. The BDEF was backpulsed after 17.5 hours of filtration and no solids were observed in the backpulse concentrate. The DEF was used to filter 2 liters of AP-107 feed and no increase in filter resistance was measured and no solids were observed on the filter at the conclusion of filtration. Results are in contrast to similar filtration testing of 241-AP-107 supernatant received in fiscal year 2018, where solids were observed and collected and caused a measurable increase in filtration resistance.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1560138
• Report Number(s): PNNL--28780; RPT-DFTP-015
• Country of Publication: United States
• Language: English

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