scholarly journals A CHEMICAL ENGINEERING DEVELOPMENT PROGRAM-AN INVESTIGATION OF THE KINETIC MECHANISMS OF URANYL SALT ION EXCHANGE

1958 ◽  
Author(s):  
S.H. Jury
Keyword(s):  
Ion Exchange ◽  
Chemical Engineering ◽  
Development Program ◽  
Engineering Development ◽  
Kinetic Mechanisms ◽  
Uranyl Salt

Research progress in materials-oriented chemical engineering in China

2019 ◽  
Vol 35 (8) ◽  
pp. 917-927 ◽  
Author(s):  
Hao Jiang ◽  
Yongsheng Han ◽  
Qiang Zhang ◽  
Jiexin Wang ◽  
Yiqun Fan ◽  
...  
Keyword(s):  
Chemical Engineering ◽  
Materials Science ◽  
Industrial Applications ◽  
Advanced Materials ◽  
Research Progress ◽  
Material Research ◽  
Engineering Science ◽  
New Materials ◽  
Engineering Development ◽  
Recent Advances

Abstract Materials-oriented chemical engineering involves the intersection of materials science and chemical engineering. Development of materials-oriented chemical engineering not only contributes to material research and industrialization techniques but also opens new avenues for chemical engineering science. This review details the major achievements of materials-oriented chemical engineering fields in China, including preparation strategies for advanced materials based on the principles of chemical engineering as well as innovative separation and reaction techniques determined by new materials. Representative industrial applications are also illustrated, highlighting recent advances in the field of materials-oriented chemical engineering technologies. In addition, we also look at the ongoing trends in materials-oriented chemical engineering in China.

The Canadian Container Development Program For Fuel Isolation

1982 ◽  
Vol 15 ◽  
Author(s):  
K. Nuttall ◽  
J.L. Crosthwaite ◽  
P. Mckay ◽  
P.M. Mathew ◽  
B. Teper ◽  
...  
Keyword(s):  
Development Program ◽  
Materials Selection ◽  
Metal Shell ◽  
Corrosion Resistant ◽  
Engineering Development ◽  
Radionuclide Release ◽  
Irradiated Fuel

ABSTRACTProgress in the Canadian program to develop durable containment systems for the direct disposal of irradiated fuel in a deep geologic vault is described. Possible containment lifetimes, and the factors that influence container design and materials selection, are discussed. Most effort is currently directed toward developing containers with a design lifetime of about 500 years, using a corrosion-resistant metal shell to provide the primary barrier to radionuclide release. The design details for various containers are described, together with the fabrication and testing programs that are in progress or planned. The container materials programs consist of both generic research, to enable predictions of container performance to be made, and engineering development, to evaluate methods of container fabrication and inspection.

Hydrodynamics and mass transfer investigations in a biphasic plasma reactor

2021 ◽  
Vol 19 (4) ◽  
pp. 369-381
Author(s):  
Mohammed Fouad Ferhat ◽  
Mouffok Redouane Ghezzar ◽  
Ahmed Addou
Keyword(s):  
Mass Transfer ◽  
Chemical Engineering ◽  
Removal Rate ◽  
Plasma Reactor ◽  
Radical Mechanism ◽  
Spray Tower ◽  
Degradation Rates ◽  
Kinetic Mechanisms ◽  
Low Mass ◽  
Plasma Reactions

Abstract This work aims to investigate the radical mechanism responsible for the degradation of a highly soluble pollutant in water. The AG25 dye was chosen as substrate and the GAD-Spray as biphasic reactor to treat it remotely. The study is conducted through experiments and simulations using Comsol Multiphysics-chemical engineering module. The Hydrodynamics coupled with the plasma-reaction has demonstrated that a low mass transfer in the droplet favorites the removal of the pollutant. It indicates that the plasma-reactions take place at the stagnant liquid film are far from the bulk of the droplet. Numerical modeling fitted by the conversion rate of the reagent has shown that the peroxynitrous acid HOONO (PON) is responsible for the degradation of AG25 in water. Consequently, and according different kinetic mechanisms, a radical mechanism has been predicted based on this deduction. The removal and the degradation rates were of 88 and 83% respectively during 90 min after the plasma exposure. The results of simulations showed a significant agreement between the calculated and the real removal rate of AG25. Through this study, it can be confirmed that GAD-spray-tower plasma reactor is efficient to eliminate and degrade remotely a very soluble pollutant through the HOONO (PON) plasma long-lived species.

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