scholarly journals Removal Efficiency of Radioactive Cesium and Iodine Ions by a Flow-Type Apparatus Designed for Electrochemically Reduced Water Production

PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e102218 ◽  
Author(s):  
Takeki Hamasaki ◽  
Noboru Nakamichi ◽  
Kiichiro Teruya ◽  
Sanetaka Shirahata
Keyword(s):  
Removal Efficiency ◽  
Radioactive Cesium ◽  
Water Production ◽  
Flow Type ◽  
Reduced Water ◽  
Type Apparatus

Reduced Water Production and Increased Oil Production Using Smart Completions and MPFM "Case Study"

2007 ◽  
Author(s):  
Mohammad S. Al-Shenqiti ◽  
Alaa A. Dashash ◽  
Ibrahim H. Al-Arnaout ◽  
Saad M. Al-Driweesh ◽  
Zaki Bakhteyar
Keyword(s):  
Oil Production ◽  
Water Production ◽  
Reduced Water

Flow-type apparatus for studying thermotolerance of hyperthermophiles under conditions simulating hydrothermal vent circulation

2005 ◽  
Vol 52 (6) ◽  
pp. 1085-1092 ◽  
Author(s):  
Shigenobu Mitsuzawa ◽  
Shigeru Deguchi ◽  
Ken Takai ◽  
Kaoru Tsujii ◽  
Koki Horikoshi
Keyword(s):  
Hydrothermal Vent ◽  
Flow Type ◽  
Type Apparatus

scholarly journals Measurement of vapor-liquid equilibria at elevated temperatures and pressures using a flow type apparatus.

1986 ◽  
Vol 19 (5) ◽  
pp. 386-391 ◽  
Author(s):  
HIROSHI INOMATA ◽  
KAZUHIRO TUCHIYA ◽  
KUNIO ARAI ◽  
SHOZABURO SAITO
Keyword(s):  
Elevated Temperatures ◽  
Flow Type ◽  
Vapor Liquid Equilibria ◽  
Type Apparatus ◽  
Vapor Liquid

THE SILVER CATALYZED OXIDATION OF ETHYLENE: II. KINETICS OF C2H4 OXIDATION

1954 ◽  
Vol 32 (4) ◽  
pp. 415-431 ◽  
Author(s):  
A. Orzechowski ◽  
K. E. MacCormack
Keyword(s):  
Total Pressure ◽  
Present Series ◽  
Initial Reaction ◽  
Flow Rates ◽  
Flow Type ◽  
Partial Pressures ◽  
C2h4 Oxidation ◽  
Kinetics Of ◽  
Catalyzed Oxidation ◽  
Type Apparatus

A flow-type apparatus is described and results given for the investigation of the kinetics of the silver catalyzed oxidation of C2H4 by oxygen. Using N2 as diluent, the concentrations of both O2 and C2H4 were varied independently from 9.9 to 79.0% and 2.35 to 9.40% respectively, whilst maintaining a total pressure of 1 atmosphere. Flow rates were varied to give a range of contact times varying from 0.05 to 1 sec. Measurements were made at 234 °C and 274 °C and the data used to estimate initial reaction velocities for both EtO and CO2 formation as a function of O2 and C2H4 partial pressures. These rates were fitted successfully to equations deduced theoretically in Part IV of the present series.

scholarly journals Development of Flow Type Cesium Removing Device Using Fluorinated Solvent

2021 ◽  
Vol 333 ◽  
pp. 04011
Author(s):  
Motoshi Suzuki ◽  
Hideo Tajima ◽  
Aoi Kikuchi ◽  
Youji Taguchi ◽  
Shou-ichi Nanba
Keyword(s):  
Aqueous Solution ◽  
Removal Rate ◽  
Radioactive Cesium ◽  
Static Mixer ◽  
Cesium Removal ◽  
Flow Type ◽  
Type Device ◽  
Extraction Test ◽  
Optimum Extraction ◽  
Extraction Experiment

In order to simultaneously achieve separation and volume reduction of radioactive cesium in the aqueous solution, we proposed a solvent extraction using a fluorinated solvent which is a nonflammable liquid having a low boiling point and is easy to distill for regeneration. Firstly optimum conditions for single extraction were determined in a batch operation. The extraction experiment was carried out by changing the pH of 5 mg/L non-radioactive cesium aqueous solution using bis(2-ethylhexyl)phosphoric acid (D2EHPA) as an extractant. The higher the pH of the aqueous phase and the D2EHPA concentration, the better the removal rate. The highest removal rate was about 60% under the pH=13. From the experimental results, the optimum extraction condition was determined as pH=13 and [D2EHPA]=0.15 mol/L. Next multiple extraction test was carried out under this condition, and 90% cesium removal could be achieved in 3 times extraction. Finally, the flow type device using a static mixer for mixing and extracting parts was proposed and then the cesium removal test was performed. The cesium removal performance of this device was equivalent to the batch system.

Removal of radioactive cesium from liquid waste by zeolite

2021 ◽  
Vol 2 (2) ◽  
pp. 39-47
Author(s):  
Aamir Abdullah Mohammed ◽  
Hayder Saleem Hussein ◽  
Salam Khudhair Abdullah
Keyword(s):  
Removal Efficiency ◽  
Langmuir Isotherm ◽  
Room Temperature ◽  
Mixing Time ◽  
Liquid Waste ◽  
Langmuir Model ◽  
Isotherm Models ◽  
Radioactive Cesium ◽  
Freundlich Model ◽  
Cesium 137

A radioactive fluid waste polluted with cesium-137 from Al-Tuwaitha site -south of Baghdad-Iraq is used in this paper. Commercial zeolite is used as a sorbent material in the present work for the removal of radioactive cesium-137. The removal efficiency for radioactive liquid was 96.43 % with 2 h mixing time, 0.04 g sorbent mass and pH=6.8 and at room temperature. The Freundlich and Langmuir isotherm models were found to represent the experimental results well and these results are more consistent with Freundlich model than Langmuir model.

Solubility of Rhodamine B in Supercritical Carbon Dioxide Fluids with or without Cosolvent

2011 ◽  
Vol 332-334 ◽  
pp. 146-151
Author(s):  
Chuan Zhao ◽  
Jun Bo Wang ◽  
Isao Tabata ◽  
Teruo Hori
Keyword(s):  
Experimental Data ◽  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Rhodamine B ◽  
Pressure Range ◽  
Fixed Temperature ◽  
Flow Type ◽  
Type Apparatus ◽  
Supercritical Carbon

In this study, the measurement and correlation of the solubility of the rhodamine B in supercritical carbon dioxide (scCO2) with or without a cosolvent were determined. The results were obtained using a flow-type apparatus, at 308.15 and 318.15 K, in a pressure range 8.0 - 24.0 MPa. The results show that, at a fixed temperature, the solubility of the dye in scCO2 fluids increases with increasing pressure. In the presence of 5 mol% methanol as a cosolvent, the solubility of dyes increased significantly. The experimental data correlated with the Chrastil and Sovova equations.

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