scholarly journals Crystalline silicotitanates--new ion exchanger for selective removal of cesium and strontium from radwastes

1996 ◽  
Author(s):  
R.G. Dosch ◽  
E.A. Klavetter ◽  
H.P. Stephens ◽  
N.E. Brown ◽  
R.G. Anthony
Keyword(s):  
Selective Removal ◽  
Ion Exchanger

Selective Removal of Perfluorobutyric Acid Using an Electroactive Ion Exchanger Based on Polypyrrole@Iron Oxide on Carbon Cloth

2021 ◽  
Author(s):  
Chenxi Huyan ◽  
Shichao Ding ◽  
Zhaoyuan Lyu ◽  
Mark H. Engelhard ◽  
Yuhao Tian ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Selective Removal ◽  
Ion Exchanger ◽  
Carbon Cloth

Selective removal of fluoride ions from water by the aluminium form of the aminomethylphosphonic acid-type ion exchanger

1994 ◽  
Vol 23 (1) ◽  
pp. 23-32 ◽  
Author(s):  
K.M. Popat ◽  
P.S. Anand ◽  
B.D. Dasare
Keyword(s):  
Selective Removal ◽  
Ion Exchanger ◽  
Fluoride Ions ◽  
Acid Type ◽  
Aminomethylphosphonic Acid

Ten Years’ Successful Operation of Nuclide Removal System in Loviisa NPP, Finland

2001 ◽  
Author(s):  
Esko H. Tusa ◽  
Asko Paavola ◽  
Risto Harjula ◽  
Jukka Lehto
Keyword(s):  
Ion Exchange ◽  
Waste Management ◽  
Reduction Factor ◽  
Selective Removal ◽  
Volume Reduction ◽  
Ion Exchanger ◽  
Successful Operation ◽  
The Past ◽  
Exchange Material ◽  
Removal System

Abstract During the past ten years, selective removal of radionuclides from evaporator concentrates has been an essential part of waste management at the Loviisa NPP in Finland. Over 900 m3 of evaporator concentrates have been purified with 112 liters of highly selective ion exchange material. The volume reduction factor, comparing the volume of the original liquid to the volume of ion exchanger, is over 8,000. More importantly, comparing the volumes for final repository, the volume reduction factor for final repository is 1,550. This volume reduction, added to the avoidance of cementation of the original concentrates, results in very important economic savings.

Improving method reliability through selective removal of glycerolipid and chlorophyll interferences

Planta Medica ◽  
2013 ◽  
Vol 79 (13) ◽  
Author(s):  
S Bijttebier ◽  
E D'Hondt ◽  
S Apers ◽  
N Hermans ◽  
S Voorspoels
Keyword(s):  
Selective Removal

TLC quantification of methylparaben on an inorganic ion-exchanger in the presence of other food additives

2007 ◽  
Vol 20 (2) ◽  
pp. 141-143 ◽  
Author(s):  
Afshin Mirzaie ◽  
Ahmad Jamshidi ◽  
Syed Husain
Keyword(s):  
Food Additives ◽  
Ion Exchanger ◽  
Inorganic Ion Exchanger ◽  
Inorganic Ion

Selective removal of steel by a laser slotting process

1995 ◽  
Author(s):  
W. O’Neill ◽  
M. Voglsanger ◽  
A. Elboughey ◽  
W.M. Steen
Keyword(s):  
Selective Removal

Maize Stalk as Natural Ion Exchanger for Hazardous Pollutants

2017 ◽  
Vol 68 (8) ◽  
pp. 1726-1731
Author(s):  
Nicoleta Mirela Marin ◽  
Luoana Florentina Pascu ◽  
Ioana Stanculescu ◽  
Ovidiu Iordache ◽  
Denisa Jianu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Kinetic Models ◽  
High Selectivity ◽  
Ion Exchanger ◽  
Exchange Equilibrium ◽  
Waste Waters ◽  
Cationic Species ◽  
Hazardous Pollutants ◽  
Tailing Ponds

This paper recommends maize stalk as a cheap natural ion exchanger. Ion exchange equilibrium was studied using thermodynamic and kinetic models. The results showed a high selectivity towards cationic species of antimony (III), molybdenum (VI), lead (II) and arsenium (III). Waste waters and sediments from tailing ponds samples were analysed.

Multipurpose filters with ion-exchanger for the equalization of ammonia peaks

1995 ◽  
Vol 32 (7) ◽  
pp. 199-206 ◽  
Author(s):  
Martin Oldenburg ◽  
Ivan Sekoulov
Keyword(s):  
Operation Time ◽  
Ion Exchanger ◽  
Filter Medium ◽  
Nitrification Rate ◽  
Ion Exchangers ◽  
Flow Rates ◽  
Hydraulic Loading ◽  
Influent Concentration

In this study the use of zeolites as ion-exchangers for equalization of ammonia peak loadings in aerated biological activated filters was investigated. For this use zeolites were mixed with a filter medium and the nitrifying filter was loaded with ammonia peaks for two hours at different flow rates. It could be demonstrated that during the phase of higher inflow concentrations the zeolite was collecting ammonia. When the influent concentration decreased ammonia was desorbed from the zeolite and could be nitrified by the bacteria growing on the filter medium. It was shown that additional zeolites can equalize variations of ammonia, especially in filter units which are working at a high nitrification rate and which are very sensitive to varying influent conditions. During the operation time of the filter no separation of the zeolite by higher hydraulic loading or by backwashing could be recognized. So the upgrading of nitrifying filters with zeolite represents an additional security for effluents containing oscillating ammonia concentrations.

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