PEP Run Report for Integrated Test A, Caustic Leaching in UFP-VSL-T01A, Oxidative Leaching in UFP-VSL-T02A

Guzman-Leong, Consuelo E.; Bredt, Ofelia P.; Burns, Carolyn A.; Daniel, Richard C.; Su, Yin‐Fong; Geeting, John Gh; Golovich, Elizabeth C.; Josephson, Gary B.; Kurath, Dean E.; Sevigny, Gary J.; Smith, Dennese M.; Valdez, Patrick Lj; Yokuda, Satoru T.; Young, Jon I.

doi:10.2172/969739

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Testing was conducted to evaluate the caustic leaching process; observations relative to risk of plugging provided secondary -or opportunistic --data. 21,22,23,24 The simulant used in this testing contained boehmite, gibbsite, chromium oxyhydroxide, sodium oxalate, filtration simulant, and supernate. This simulant was selected to investigate caustic leaching, oxidative leaching, and washing.…”

Section: Pep Testsmentioning

confidence: 99%

SRNL Review And Assessment Of WTP UFP-02 Sparger Design And Testing

Duignan¹,

Fink²,

Steimke³

2014

View full text Add to dashboard Cite

show abstract

Section: Pep Testsmentioning

confidence: 99%

SRNL Review And Assessment Of WTP UFP-02 Sparger Design And Testing

Duignan¹,

Fink²,

Steimke³

2014

View full text Add to dashboard Cite

show abstract

“…Tests used as-prepared PEP simulant slurry developed for Integrated Tests A and B (see Guzman-Leong et al 2009;Geeting et al 2009;). Tests studied long-time fouling dynamics and flux decline by filtering the as-prepared PEP simulant slurry in continuous-recycle filtration (where all permeate collected was immediately and continuously returned to the slurry reservoir) at ~5-wt% undissolved solids (UDS) and at various AV and TMP setpoint combinations.…”

Section: Series 1 Testing: Long-term Fouling Testsmentioning

confidence: 99%

“…As stated in the introduction to this section, all Series 1 filtration tests employed an as-prepared PEP simulant slurry developed for Integrated Tests A and B (see Guzman-Leong et al 2009;Geeting et al 2009;). Supporting documentation for the production and procurement of this simulant can be found in Scheele et al (2009).…”

Section: Waste Simulantmentioning

confidence: 99%

Filtration Understanding: FY10 Testing Results and Filtration Model Update

Daniel¹,

Billing²,

Burns³

et al. 2011

Self Cite

View full text Add to dashboard Cite

SummaryThis document completes the requirements of Milestone 2-4, Final Report of FY10 Testing, discussed in the scope of work outlined in the EM31 task plan WP-2.3.6-2010-1. The focus of task WP-2.3.6 is to improve the U.S. Department of Energy's (DOE's) understanding of filtration operations for high-level waste (HLW) to improve filtration and cleaning efficiencies, thereby increasing process throughput and reducing the Na demand (through acid neutralization). Developing cleaning/backpulsing requirements will produce much more efficient operations for both the Hanford Tank Waste Treatment and Immobilization Plant (WTP) and the Savannah River Site (SRS), thereby significantly increasing throughput by limiting cleaning cycles. Indeed, current program results derived from Pacific Northwest National Laboratory (PNNL) studies indicate that a ~35% increase in filter throughput can be achieved by optimization of backpulse frequency alone. In this report, the results of FY10 testing conducted under EM31 task plan WP-2.3.6-2010-1 are presented and discussed. The scope of this work is to develop the understanding of filter fouling to allow developing this cleaning/backpulsing strategy.The overall approach to this task is:  Review previous cross-flow testing at SRS, PNNL, and other peer review journals to direct testing activities for this task. Develop a predictive model that reflects the important physical mechanisms of fouling and cleaning for use in determining effective filter cleaning strategies for a variety of feeds. Develop simulants that can result in significant irreversible fouling, but also are representative of the types of materials that are present in HLW. Test these simulants in bench-scale equipment to identify the cleaning requirements for these feeds. Develop a cleaning strategy to optimize throughput while minimizing added Na. Validate the model and operational strategy with actual waste samples as appropriate.The FY10 work discussed in the current report focused on tests that would improve understanding of filter fouling dynamics to allow development of improved filtration models. To this end, three filtration test programs were conducted to provide insight into dynamics of filter fouling and the efficacy of flux recovery operations, including both backpulsing of the filter and chemical cleaning regimens. The three testing programs were: Series 1, Long Term Fouling Tests -examined flux decline when filtering the Pretreatment Engineering Platform (PEP) waste simulant slurry for long periods of time without backpulsing. Previous filtration testing has only studied filter flux dynamics over relatively brief periods of operation (4-12 hours) with respect to expected filtration operation times at WTP (on the order of 100 hours). The aim of Series 1 testing was to answer this need. Series 2, Component Fouling Tests -determined the filtration behavior of the major components that comprise the PEP simulant. By examining each solid component separately, the nature of particle-particle and particle me...

show abstract