scholarly journals Nitrate and Perchlorate removal from groundwater by ion exchange

10.2172/14143 ◽  
1999 ◽  
Author(s):  
S Burge ◽  
R Halden
Keyword(s):  
Ion Exchange ◽  
Perchlorate Removal

Kinetics of nitrate and perchlorate removal and biofilm stratification in an ion exchange membrane bioreactor

2012 ◽  
Vol 46 (14) ◽  
pp. 4556-4568 ◽  
Author(s):  
Ana R. Ricardo ◽  
Gilda Carvalho ◽  
Svetlozar Velizarov ◽  
João G. Crespo ◽  
Maria A.M. Reis
Keyword(s):  
Ion Exchange ◽  
Membrane Bioreactor ◽  
Ion Exchange Membrane ◽  
Perchlorate Removal ◽  
Exchange Membrane ◽  
Kinetics Of

Combining Ion-exchange (IX) technology and biological reduction for perchlorate removal

2002 ◽  
Vol 13 (1) ◽  
pp. 21-38 ◽  
Author(s):  
Jacimaria R. Batista ◽  
Tina M. Gingras ◽  
Adriano R. Vieira
Keyword(s):  
Ion Exchange ◽  
Biological Reduction ◽  
Perchlorate Removal

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

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