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Monosodium Titanate Particle Characterization
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Book Synopsis Monosodium Titanate Particle Characterization by :
Download or read book Monosodium Titanate Particle Characterization written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A characterization study was performed on monosodium titanate (MST) particles to determine the effect of high shear forces expected from the In-Tank Precipitation (ITP) process pumps on the particle size distribution. The particles were characterized using particle size analysis and scanning electron microscopy (SEM). No significant changes in particle size distributions were observed between as-received MST and after 2--4 hours of shearing. Both as-received and sheared MST particles contained a large percentage of porosity with pore sizes on the order of 500 to 2,000 Angstroms. Because of the large percentage of porosity, the overall surface area of the MST is dominated by the internal surfaces. The uranium and plutonium species present in the waste solution will have access to both interior and exterior surfaces. Therefore, uranium and plutonium loading should not be a strong function of MST particle size.
Book Synopsis Analysis of Harrell Monosodium Titanate Lot #081811 by :
Download or read book Analysis of Harrell Monosodium Titanate Lot #081811 written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Monosodium titanate (MST) for use in the Actinide Removal Process (ARP) must be qualified and verified in advance. A single qualification sample for each batch of material is sent to SRNL for analysis, as well as a statistical sampling of verification samples. The Harrell Industries Lot No.081811 qualification and 12 verification samples met all the requirements in the specification, with the possible exception of the geometric standard deviation for particle size. Two subsamples from the qualification sample were analyzed, giving results of 3.82 and 3.28, respectively, for the geometric standard deviation. The specification is ≤3.5. The results for both samples met the remaining particle size specifications, i.e.
Book Synopsis Filterability of Monosodium Titanate Supplied by Blue Grass Chemical Specialties by :
Download or read book Filterability of Monosodium Titanate Supplied by Blue Grass Chemical Specialties written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design specification for monosodium titanate (MST) requires that less than 1 per cent of the particles are larger than 35 micron and that less than 1 per cent of the particles are smaller than 1 micron. Blue Grass Chemical Specialties produced two batches of MST for the Defense Waste Processing Facility (DWPF) that do not meet the particle size specification. The material has more than 1 per cent of the particles smaller than 1 micron. This increase in the fraction of particles less than 1 micron could adversely affect filtration within the Actinide Removal Project (ARP). The authors conducted dead-end filtration testing with 0.45 micron polymeric filter media, 0.5 micron Mott sintered stainless steel filter media, and 0.1 micron Mott sintered stainless steel filter media. The authors make the following recommendations for MST particle size. If a 0.5 micron Mott filter is used for the ARP process, the existing particle size specification (less than 1 per cent of particles less than 1 micron and less than 1 per cent of particles greater than 35 micron) should be maintained. If a 0.1 micron Mott filter is used for the ARP process and the existing particle size specification is not met, DWPF personnel should arrange for filter tests, such as those described in this report, to be performed to evaluate the filterability of the MST. DWPF personnel should consider revising the particle size specification, because technology improvements allow better resolution of particles less than 1 micron. The limited data collected during this testing is not sufficient to change the particle size specification. Limited additional testing similar to that performed here would provide sufficient technical bases.
Book Synopsis DEVELOPMENT OF MONOSODIUM TITANATE (MST) PURCHASE SPECIFICATIONS. by : D. Hobbs
Download or read book DEVELOPMENT OF MONOSODIUM TITANATE (MST) PURCHASE SPECIFICATIONS. written by D. Hobbs and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Savannah River National Laboratory (SRNL) evaluated the previous monosodium titanate (MST) purchase specifications for particle size and strontium decontamination factor. Based on the measured particle size and filtration performance characteristics of several MST samples with simulated waste solutions and various filter membranes we recommend changing the particle size specification as follows. The recommended specification varies with the size and manufacturer of the filter membrane as shown below. We recommend that future batches of MST received at SRS be tested for particle size and filtration performance. This will increase the available database and provide increased confidence that particle size parameters are an accurate prediction of filtration performance. Testing demonstrated the feasibility of a non-radiochemical method for evaluating strontium removal performance of MST samples. Using this analytical methodology we recommend that the purchase specification include the requirement that the MST exhibits a strontium DF factor of>1.79 upon contact with a simulated waste solution with composition as reported for simulated waste solution SWS-7-2005-1 in Table 1 and containing 5.2 to 5.7 mg L{sup -1} strontium with 0.1 g L{sup -1} of the MST. We also recommend performing additional tests with these simulants and MST samples and, if available, new MST samples, to determine the reproducibility and increase the available database for the measurements by the ICP-ES instrument. These measurements will provide increased confidence that the non-radiological method provides a reliable method for evaluating the strontium and actinide removal performance for MST samples.
Book Synopsis TESTING AND CHARACTERIZATION OF ENGINEERED FORMS OF MONOSODIUM TITANATE (MST). by :
Download or read book TESTING AND CHARACTERIZATION OF ENGINEERED FORMS OF MONOSODIUM TITANATE (MST). written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineered forms of MST and mMST were prepared at ORNL using an internal gelation process. Samples of these two materials were characterized at SRNL to examine particle size and morphology, peroxide content, tapped densities, and Na, Ti, and C content. Batch contact tests were also performed to examine the performance of the materials. The {sup E}mMST material was found to contain less than 10% of the peroxide found in a freshly prepared batch of mMST. This was also evidenced in batch contact testing with both simulated and actual waste, where little difference in performance was seen between the two engineered materials, {sup E}MST and {sup E}mMST. Based on these results, attempts were made to increase the peroxide content of the materials by post-treatment with hydrogen peroxide. The peroxide treatment resulted in a slight (≈10%) increase in peroxide content; however, the peroxide:Ti molar ratio was still much lower (≈0.1 X) than what is seen in a freshly prepared batch of mMST. Testing with simulated waste showed the performance of the peroxide treated materials was improved. Batch contact tests were also performed with an earlier (2003) prepared lot of {sup E}MST to examine the effect of ionic strength on the performance of the material. In general the results showed a decrease in removal performance with increasing ionic strength, which is consistent with previous testing with MST. A Sr loading isotherm was also determined, and the {sup E}MST material was found to reach a Sr loading as high as 13.2 wt % after 100 days of contact at a phase ratio of 20000 mL/g. At the typical MST phase ratio of 2500 mL/g (0.4 g/L), a Sr loading of 2.64 wt % was reached after 506 hours of contact. Samples of {sup E}MST and the post-peroxide treated {sup E}mMST were also tested in a column configuration using simulated waste solution. The breakthrough curves along with analysis of the sorbent beds at the conclusion of the experiments showed that the peroxide treated {sup E}mMST has a higher Sr and Np capacity, but that both materials have similar Pu capacities. The {sup E}MST removed a larger percentage of U than the peroxide treated {sup E}mMST, which is consistent with previous testing which showed that mMST has little affinity for U under these conditions.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Analysis of Harrell Monosodium Titanate Lot #050411 by :
Download or read book Analysis of Harrell Monosodium Titanate Lot #050411 written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phase I Technical Report for the Engineering of Monosodium Titanate by : CHARLES. NASH
Download or read book Phase I Technical Report for the Engineering of Monosodium Titanate written by CHARLES. NASH and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monosodium titanate (MST) is an inorganic adsorbent that effectively removes strontium, plutonium, uranium, and other trace elements from alkaline salt supernate. Current plans use the MST in batch contact processes to treat Savannah River Site (SRS) waste solutions that require 90Sr and actinide removal to meet low level disposal criteria. More effective use of MST may be realized if the MST could be engineered into a form suitable for a continuous treatment process such as an adsorption column. The main benefits of column operation are (1) enhanced loading due to equilibration with feed adsorbate levels versus product levels, and (2) a small footprint relative to that of a batch contact tank. The current baseline MST material features particles of nominally 0.5-35 micron in size, which are much too fine for use in an adsorption column. An extensive review of the literature and consultation with technical experts identified candidate methods to produce engineered forms of MST. From this list a review team selected five candidate methods for further study. Laboratory syntheses at Savannah River National Laboratory (SRNL) and offsite produced representative samples for characterization and performance testing. Testing identified two suitable methods. The two methods include internal gelation, which is patented technology of Oak Ridge National Laboratory, and internal hydrolysis, a method in which the MST is produced within a porous substrate. A commercial sodium titanate, SrTreat(R), produced by Fortum Engineering (Finland), demonstrated good performance as well although plutonium removal kinetics appeared much slower than observed for the other engineered MST materials.
Download or read book Radioactive Waste Management written by and published by . This book was released on 1981 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1995 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Issues in Nanotechnology and Micotechnology—Materials and Molecular Research: 2013 Edition by :
Download or read book Issues in Nanotechnology and Micotechnology—Materials and Molecular Research: 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Nanotechnology and Micotechnology—Materials and Molecular Research: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Nanotechnology. The editors have built Issues in Nanotechnology and Micotechnology—Materials and Molecular Research: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Nanotechnology in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Nanotechnology and Micotechnology—Materials and Molecular Research: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Book Synopsis Advances in Materials Science for Environmental and Nuclear Technology II by : S. K. Sundaram
Download or read book Advances in Materials Science for Environmental and Nuclear Technology II written by S. K. Sundaram and published by John Wiley & Sons. This book was released on 2011-07-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 29 papers from the Clean Energy: Fuel Cells, Batteries, Renewables; Green Technologies for Materials Manufacturing and Processing II; and Materials Solutions for the Nuclear Renaissance symposia held during the 2010 Materials Science and Technology (MS&T'10) meeting, October 17-21, 2010, Houston, Texas. Topics include Batteries; Corrosion and Materials Degradation; Fuel Cells & Electrochemistry; Fossil Energy Materials; Solar Energy; Waste Minimization; Green Manufacturing and Materials Processing; Immobilization of Nuclear Wastes; Irradiation and Corrosion Effects; and Materials Performance in Extreme Environments.
Book Synopsis Phase IV Simulant Testing of Monosodium Titanate Adsorption Kinetics by :
Download or read book Phase IV Simulant Testing of Monosodium Titanate Adsorption Kinetics written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Salt Disposition Systems Engineering Team identified the adsorption kinetics of actinides and strontium onto monosodium titanate (MST) as a technical risk in several of the processing alternatives selected for additional evaluation in Phase III of their effort.
Book Synopsis Characterization of Manganese Doped Bismuth Sodium Titanate by : Geoffrey W. Freeman
Download or read book Characterization of Manganese Doped Bismuth Sodium Titanate written by Geoffrey W. Freeman and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Engineering Monosodium Titanate for Adsorption Column Processes by : CHARLES. NASH
Download or read book Engineering Monosodium Titanate for Adsorption Column Processes written by CHARLES. NASH and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monosodium titanate (MST) is an inorganic adsorbent powder that effectively removes strontium, plutonium, neptunium, and other trace elements from alkaline high-level waste (HLW) supernate. This work tested one commercial titanate and four general methods to engineer MST into particles large enough to use in adsorption columns. The most successful of the engineered products selected from batch contact and chemical stability testing succeeded in treating 2900 bed volumes (BV) of simulated salt waste containing dissolved plutonium and strontium. There was no detectable strontium breakthrough and only 6 per cent plutonium breakthrough--well within the processing goal--at the end of the demonstration which operated at 5.3 BV/hour. Additional column tests at nominally 15 BV/hr demonstrated similar removal performance. Batch testing of adsorbents used both actual Savannah River Site (SRS) tank supernate as well as simulated salt solutions spiked with strontium, neptunium, and plutonium. In tank waste tests, internal gelation beads produced by the Oak Ridge National Laboratory (ORNL) demonstrated a batch distribution coefficient of 35,000 +/- 4,000 mL/g for plutonium at a phase ratio of 1970 mL/g. In the same batch the sorbent demonstrated a batch distribution coefficient of 99,000 +/- 7,500 mL/g for strontium. These results indicate that this material should be able to process thousands of bed volumes of SRS salt waste before column breakthrough.
Book Synopsis Biofabrication for Orthopedics by : Wenguo Cui
Download or read book Biofabrication for Orthopedics written by Wenguo Cui and published by John Wiley & Sons. This book was released on 2022-10-03 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biofabrication for Orthopedics A comprehensive overview of biofabrication techniques for orthopedics and their novel applications With an ever-increasing global population and the rise in the occurrence of orthopedic diseases amongst an aging population, it is essential for technological advances to meet this growing medical need. Orthopedic biofabrication is a cutting-edge field that seeks to produce novel clinical solutions to this mounting problem, through the incorporation of revolutionary technologies that have the potential to not only transform healthcare, but also provide highly automated and personalized patient solutions. With the advances in the discipline, there is a significant growing interest in biofabrication for orthopedics in research activity geared towards routine clinical use. Ideal for a broad readership amongst medical practitioners and scientists, Biofabrication for Orthopedics summarizes all aspects of the topic: detailed information on the technology, along with advanced developments, research progress, and future perspectives on biofabrication for orthopaedics—particularly on the potential applications for tissue engineering technologies. In doing so, the book describes the various biomaterials—natural and synthetic—use for orthopedics and discusses the many ways in which these materials can be used in all parts of the body. As such, it offers detailed information on a wide range of applications in the fields of biology and clinical and industrial manufacturing. Biofabrication for Orthopedics readers will also find: Insights into the applications of biofabrication technologies in various bodily functions Thorough discussion of different biofabrication techniques used in creating orthopedic products, like stereolithography, cell sheet and organ bioprinting, electrospinning, and microfluidics Discussion of a wide range of diverse functions, such as bone implants, skin regeneration, vascularization, meniscus remodeling, and more Biofabrication for Orthopedics is a useful reference for those in a variety of research fields like medical-related practitioners and scientists, materials science, medicine, and manufacturing, as well as the libraries who support them.
