scholarly journals Laboratory-Scale Bismuth Phosphate Extraction Process Simulation To Track Fate of Fission Products

2007 ◽  
Author(s):  
R. JEFFREY Serne ◽  
Michael J. Lindberg ◽  
Thomas E. Jones ◽  
Herbert T. Schaef ◽  
Kenneth M. Krupka
Keyword(s):  
Process Simulation ◽  
Fission Products ◽  
Extraction Process ◽  
Laboratory Scale ◽  
Bismuth Phosphate

Effect of process water chemistry and particulate mineralogy on model oilsands separation using a warm slurry extraction process simulation

Fuel ◽  
2008 ◽  
Vol 87 (7) ◽  
pp. 1394-1412 ◽  
Author(s):  
S. Wik ◽  
B.D. Sparks ◽  
S. Ng ◽  
Y. Tu ◽  
Z. Li ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Process Simulation ◽  
Extraction Process ◽  
Process Water

Characterization of a Laboratory-Scale Container for Freezing Protein Solutions with Detailed Evaluation of a Freezing Process Simulation

2014 ◽  
Vol 103 (2) ◽  
pp. 417-426 ◽  
Author(s):  
Ulrich Roessl ◽  
Dalibor Jajcevic ◽  
Stefan Leitgeb ◽  
Johannes G. Khinast ◽  
Bernd Nidetzky
Keyword(s):  
Process Simulation ◽  
Laboratory Scale ◽  
Protein Solutions ◽  
Freezing Process ◽  
Detailed Evaluation

Effect of bitumen composition and process water chemistry on model oilsands separation using a warm slurry extraction process simulation

Fuel ◽  
2008 ◽  
Vol 87 (7) ◽  
pp. 1413-1421 ◽  
Author(s):  
S. Wik ◽  
B.D. Sparks ◽  
S. Ng ◽  
Y. Tu ◽  
Z. Li ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Process Simulation ◽  
Extraction Process ◽  
Process Water

scholarly journals Spray drying of pectin obtained from Citrus Sinensis waste

2019 ◽  
Vol 10 (1) ◽  
pp. 4825-4829
Keyword(s):  
Experimental Design ◽  
Extraction Process ◽  
Laboratory Scale ◽  
Acid Extraction ◽  
Drying Process ◽  
Temperature Ratio ◽  
Plant Resources ◽  
Gelling Properties ◽  
Citrus Waste ◽  
High Degree

Polysaccharides are high molecular weight polymers that have functional groups, which can be used as sites to derivate or bind specific ligands. Pectin is a polysaccharide that is obtained from plant resources mainly from citrus plants. It is a widely used product in the food and in the pharmaceutical industry for its thickener, stabilizing and gelling properties. The objective of this work was to establish a pectin drying process obtained by acid hydrolysis from citrus waste by spray dry. An acid extraction process with the dry and ground plant material was used. The influence of the inlet and outlet temperatures on the yield and drying speed was evaluated by an experimental design 32 replicated at the central point. With the best variant, five batches were developed at laboratory scale and one batch at bank scale, evaluating the obtained material by infrared spectroscopy and scanning electron microscopy. The results of experimental design showed that the temperature does not influence significantly the yield, but it does affect the speed of the drying. An input-output temperature ratio of 200/80 ºC was established as the best drying variant. The batches prepared on a laboratory scale showed a yield higher than 85.0% and a drying speed higher than 0.7 L / h. The yield of the batch on a bank scale was 90%. The degree of esterification was 63.5%, indicative of a high degree of methoxylation pectins. The results show that the drying process is adequate to obtain pharmaceutical grade pectin.

The Application Research of Concentration & Denitration Technology in Advanced Reprocessing Process

2012 ◽  
Vol 560-561 ◽  
pp. 637-643
Author(s):  
Yong Li ◽  
Xue Gang Liu ◽  
Jin Chen
Keyword(s):  
Nitric Acid ◽  
Nuclear Power ◽  
Liquid Waste ◽  
Fission Products ◽  
Extraction Process ◽  
Purex Process ◽  
Current Status ◽  
Spent Fuel ◽  
High Level Liquid Waste ◽  
High Level

The proper management of spent fuel arising from nuclear power production is a key issue for the sustainable development of nuclear energy. While conventional reprocessing process, PUREX process, was successful to recover uranium and plutonium, in recent years some countries have turned to focus on advanced reprocessing process, which features of partitioning of minor actinides (MA) and long-lived fission products(LLFP). Most advanced reprocessing processes under development involve new extractants and additional extraction cycles. In China, TRPO extraction process has been developed to partition MA/LLFP from high-level liquid waste(HLLW) since early 1980’s. In parallel to R&D work on separation technologies, studies on concentration & denitration process have been evolved to prepare feed solutions to suit qualifications of extraction. Industrially, concentration & denitration is the internationally recognized standard to treat HLLW released from PUREX before vitrification. It enables to minimize the volume of interim storage, to restrain the corrosion of storage tank, to recover nitric acid in HLLW and to reduce the required evaporation duty of the vitrification process. Generally, the constitution of concentrated HLLW has little impact on the following vitrification process. But when concentration & denitration acts as pretreatment process of partitioning, the composition of actinides, fission products, and nitric acid in concentrated HLLW solution plays significant role in extraction process. A series of technical issues relevant to the connection between concentration ﹠denitration and extractions should be solved. This paper describes current status of concentration & denitration technology utilized in industry and under reprocessing plants. The specific separation requirements in advanced reprocessing process and challenges to apply concentration & denitration process are addressed. Besides, concentration & denitration process was tested in laboratory to adjust feed solutions for TRPO and Cyanex301 partitioning. Results demonstrate its promising prospect in advanced reprocessing process.

The Use of Simulation in Laboratory Scale in the Field of Process Simulation

2007 ◽  
Vol 78 (10-11) ◽  
pp. 756-761
Author(s):  
Rolf Großterlinden ◽  
Andreas Offergeld ◽  
Dieter Tesch ◽  
Liuyi Zhang
Keyword(s):  
Process Simulation ◽  
Laboratory Scale

Feasibility of immobilizing fluorinated pyrochemical reprocessing salts in a glass-ceramic matrix

2004 ◽  
Vol 848 ◽  
Author(s):  
Agnès Grandjean
Keyword(s):  
Glass Ceramic ◽  
Raw Materials ◽  
Chemical Properties ◽  
Fission Products ◽  
Ceramic Matrix ◽  
Extraction Process ◽  
Spent Fuel ◽  
Molten Fluoride ◽  
Materials Used ◽  
Physical And Chemical

ABSTRACTSpent fuel reprocessing by an innovative reductive extraction process in a molten fluoride medium (LiF/AlF3) is now being evaluated; in this hypothesis, all the unrecoverable fission products would be conditioned as fluorides. A preliminary study was undertaken to assess the feasibility of incorporating these fluorides by melting in a glass-ceramic matrix. The containment matrix for the fluorinated waste stream was selected after examining the consequences of fluorinated compounds on the vitreous state and on the physical and chemical properties of the melt and the solidified glass. The presence of fluorinated compounds in the raw materials used to produce the vitreous material raises the problem of the volatility of some fluorides, of their solubility in the melt, and of possible crystallization of the material.

3D reconstruction of coal pore network and its application in CO2-ECBM process simulation at laboratory scale

2021 ◽  
Author(s):  
Huihuang Fang ◽  
Hongjie Xu ◽  
Shuxun Sang ◽  
Shiqi Liu ◽  
Shuailiang Song ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Process Simulation ◽  
Pore Network ◽  
Laboratory Scale
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