scholarly journals Storage and Aging Effects on Spherical Resorcinol-Formaldehyde Resin Ion Exchange Performance

2007 ◽  
Author(s):  
Sandra K Fiskum ◽  
Stuart T Arm ◽  
Matthew K Edwards ◽  
Marilyn J Steele ◽  
Kathie K Thomas
Keyword(s):  
Ion Exchange ◽  
Formaldehyde Resin ◽  
Aging Effects ◽  
Resorcinol Formaldehyde ◽  
Exchange Performance

Small- to large-scale comparisons of cesium ion exchange performance with spherical resorcinol formaldehyde resin

2019 ◽  
Vol 54 (12) ◽  
pp. 1922-1931 ◽  
Author(s):  
Sandra K. Fiskum ◽  
Reid A. Peterson ◽  
Heather A. Colburn ◽  
Margaret R. Smoot ◽  
Matthew R. Landon ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Large Scale ◽  
Formaldehyde Resin ◽  
Resorcinol Formaldehyde ◽  
Exchange Performance ◽  
Cesium Ion

Deactivation of Spent Ion-exchange Resins Contaminated by Cesium and Cobalt Radionuclides

2019 ◽  
Vol 23 (4) ◽  
pp. 20-24
Author(s):  
M.S. Palamarchuk ◽  
E.A. Tokar ◽  
M.V. Tutov ◽  
A.M. Yegorin
Keyword(s):  
Iron Oxide ◽  
Ion Exchange ◽  
Liquid Radioactive Waste ◽  
Formaldehyde Resin ◽  
Ion Exchange Resins ◽  
Resorcinol Formaldehyde ◽  
Circulating Water ◽  
Cesium Radionuclides ◽  
Edta Complexes ◽  
Exchange Resins

Simulation of iron oxide (magnetite and maghemite) and aluminosilicate (sillimanite and cyanite) deposits formed on the surface of spent ionexchange resins in the process of decontamination of liquid radioactive waste contaminated by cesium and cobalt radionuclides has been performed. A method of deep deactivation of spent ion-exchange resins contaminated by aluminosilicate and iron oxide deposits using alkaline and acidic solutions containing Zn-EDTA complexes has been suggested. The method of two-stage concentrating of cesium radionuclides using selective sorption materials (resorcinol-formaldehyde resin and Thermoxid-35 ferrocyanide sorbent) has been improved. The method advantage consists in using a solution containing EDTA complexes for elution of cesium radionuclides from the resorcinol-formaldehyde resin with their transition onto Thermoxid-35. High stability of the resorcinol-formaldehyde resin and Thermoxid-35 in the course of concentrating has been demonstrated. A scheme of deactivation of spent ion-exchange resins, which enables one to decrease the volume of secondary wastes due to utilization of a circulating water supply, has been suggested.

scholarly journals Cesium Ion Exchange Using Spherical Resorcinol-Formaldehyde Resin in Support of Waste Qualification Testing for LAWPS

2017 ◽  
Author(s):  
Sandra K. Fiskum ◽  
Margaret R. Smoot ◽  
Reid A. Peterson ◽  
Heather A. Colburn ◽  
Jarrod R. Allred
Keyword(s):  
Ion Exchange ◽  
Formaldehyde Resin ◽  
Resorcinol Formaldehyde ◽  
Cesium Ion ◽  
Qualification Testing

scholarly journals Multi-Cycle Cesium Ion Exchange Testing Using Spherical Resorcinol-Formaldehyde Resin with Diluted Hanford Tank Waste 241-AP-105

2018 ◽  
Author(s):  
Sandra K. Fiskum ◽  
Jarrod R. Allred ◽  
Heather A. Colburn ◽  
Amy M. Rovira ◽  
Margaret R. Smoot ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Formaldehyde Resin ◽  
Resorcinol Formaldehyde ◽  
Cesium Ion ◽  
Tank Waste

scholarly journals Ion Exchange Properties of Resins Derived fromp-Hydroxybenzaldehyde, Resorcinol and Formaldehyde

2010 ◽  
Vol 7 (1) ◽  
pp. 287-294 ◽  
Author(s):  
V. V. Hiwase ◽  
A. B. Kalambe ◽  
K. M. Khedkar ◽  
S. D. Deosarkar
Keyword(s):  
Ion Exchange ◽  
Metal Ion ◽  
High Selectivity ◽  
Formaldehyde Resin ◽  
Resorcinol Formaldehyde ◽  
Monomer Composition ◽  
Exchange Study ◽  
Metal Ion Uptake ◽  
Physicochemical Methods ◽  
Exchange Properties

The terpolymeric resins were prepared by base catalyzed polycondensation ofp-hydroxybenzaldehyde, resorcinol and formaldehyde. Resin obtained by molar monomer composition,p-hydroxybenzaldehyde: resorcinol: formaldehyde as 1:1:3 was abbreviated as PHBRF-I and that prepared by 1:2:4 composition was abbreviated as PHBRF-II. These resins were characterized by physicochemical methods such as elemental analysis, UV-Vis, IR and NMR. ion-exchange study was carried out with Cu2+, Zn2+, Ni2+, Co2+, Pb2+& Cd2+by batch equilibrium method. The rate of metal ion uptake by PHBRF-II terpolymeric resin was higher than that of PHBRF-I. Effect of pH and electrolytes under specified condition were also studied. The terpolymeric resins show high selectivity for Cu2+, Zn2+and Co2+as compared to Ni2+, Pb2+, and Cd2+.

A Resorcinol-Formaldehyde Resin as an Embedding Material for Electron Microscopy of Membranes

1969 ◽  
Vol 27 ◽  
pp. 328-329 ◽  
Author(s):  
J. G. Robertson ◽  
D. F. Parsons
Keyword(s):  
Electron Microscopy ◽  
Osmium Tetroxide ◽  
Neutral Lipids ◽  
Lipid Extraction ◽  
Water Soluble ◽  
Formaldehyde Resin ◽  
Electron Microscope Autoradiography ◽  
Resorcinol Formaldehyde ◽  
Major Disadvantage ◽  
Cell Organization

The extraction of lipids from tissues during fixation and embedding for electron microscopy is widely recognized as a source of possible artifact, especially at the membrane level of cell organization. Lipid extraction is also a major disadvantage in electron microscope autoradiography of radioactive lipids, as in studies of the uptake of radioactive fatty acids by intestinal slices. Retention of lipids by fixation with osmium tetroxide is generally limited to glycolipids, phospholipids and highly unsaturated neutral lipids. Saturated neutral lipids and sterols tend to be easily extracted by organic dehydrating reagents prior to embedding. Retention of the more saturated lipids in embedded tissue might be achieved by developing new cross-linking reagents, by the use of highly water soluble embedding materials or by working at very low temperatures.

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