Fourteen Chemical Processing Cell (CPC) simulations were performed with nonradioactive sludge simulants at the Aiken County Technology Laboratory in Aiken, SC. Four of these experiments were performed with Tank 51 sludge simulant. The remaining ten were performed with Tank 40 sludge simulant. The purpose of these experiments was to elucidate the chemistry and characteristics of Sludge Batch (SB) 10 as anticipated in the Defense Waste Processing Facility (DWPF). Experiments were performed at acid stoichiometries between 76% and 138% of the Koopman Minimum Acid requirement (85% -144% of the Hsu acid requirement) and at REDuction/OXidation (REDOX) targets between 0.1 and 0.3. Testing examined the impact of coupled operations and sludge-only operations during Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) processing at both design basis and nominal boilup rates. Revision viii
Savannah River National Laboratory (SRNL) has completed a work scope in support of the Savannah River Remediation (SRR) Nitric-Glycolic flowsheet. Glycolic acid will replace formic acid as a reducing agent in the pre-processing of High-Level Waste sludge performed at the Defense Waste Processing Facility (DWPF). Glycolic acid will perform the same function as formic acid, namely reduction of mercury and adjustment of feed rheology and melter oxidation/reduction potential, while significantly reducing the potential for hydrogen generation in DWPF processing. Development testing has demonstrated glycolic acid virtually eliminates hydrogen production in the pre-processing steps.The Nitric-Glycolic flowsheet significantly improves DWPF's ability to address Savannah River Site's key challenge -the incorporation of effluent received from the Salt Waste Processing Facility (SWPF). SWPF will deliver significant effluent volume to DWPF, resulting in a concurrent increase in DWPF effluent returned to the Concentration, Storage and Transfer Facilities (CSTF). This work scope demonstrates that glycolate can be destroyed under the Nitric-Glycolic flowsheet prior to returning the DWPF recycle stream to CSTF.
A special thanks to Alex Nikolov and Darsh Wasan of the Illinois Institute of Technology for their expertise in foam and antifoamers, in helping us to develop the research program, to evaluate the results and to identify candidates for testing, and especially for introducing us to Kalman Koczo of Momentive Performance Materials who supplied us with the Momentive™ Y-17112. A special thanks to Gita Golcar for her identification of most of the antifoam candidates that we tested, including Evonik Surfynol ® MD20. We had great support from Meagan Kinard, Katherine Miles, Austin Coleman, and Daniel Jones in helping us to set up, develop R&D directions, perform the experiments, and so much more in finishing these tasks. Thanks to Mark Fowley and Andy Foreman for designing and installing the portable table that the RC1 equipment is assembled onto. Thanks to Christopher Verst for calculating radiation dose approximations and operating the J.L Shepherd Model 484 Co-60 gamma irradiator. Thanks to Mason Clark of DWPF Engineering for his support in the planning and execution of this testing. We had great support from our interns, Jackie Do from the University of Georgia and Maggie Hansen from Clemson University. Jackie and Maggie did a great job in helping prepare the equipment, procedures, R&D directions, and iControl software for the antifoam experiments.
A special thanks to Alex Nikolov and Darsh Wasan of the Illinois Institute of Technology for their expertise in foam and antifoamers, in helping us to develop the research program, to evaluate the results and to identify candidates for testing, and especially for introducing us to Kalman Koczo of Momentive Performance Materials who supplied us with the Momentive™ Y-17112. A special thanks to Gita Golcar for her identification of most of the antifoam candidates that we tested, including Evonik Surfynol ® MD20. We had great support from Meagan Kinard, Katherine Miles, Austin Coleman, and Daniel Jones in helping us to set up, develop R&D directions, perform the experiments, and so much more in finishing these tasks. Thanks to Mark Fowley and Andy Foreman for designing and installing the portable table that the RC1 equipment is assembled onto. Thanks to Christopher Verst for calculating radiation dose approximations and operating the J.L Shepherd Model 484 Co-60 gamma irradiator. Thanks to Mason Clark of DWPF Engineering for his support in the planning and execution of this testing. We had great support from our interns, Jackie Do from the University of Georgia and Maggie Hansen from Clemson University. Jackie and Maggie did a great job in helping prepare the equipment, procedures, R&D directions, and iControl software for the antifoam experiments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.