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+.

scholarly journals Cation-Exchange Properties of Aluminium(III) Phosphate

1996 ◽  
Vol 13 (4) ◽  
pp. 261-279 ◽  
Author(s):  
S. Mustafa ◽  
A. Naeem ◽  
N. Rehana ◽  
H.Y. Samad
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Thermodynamic Parameters ◽  
Metal Ion ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Ion Sorption ◽  
Metal Ion Uptake ◽  
Titration Data ◽  
Exchange Properties

Potentiometric titrations of aluminium(III) phosphate have been performed in the presence of aqueous electrolyte solutions containing Cu2+, Zn2+, Ni2+ and K+ ions as a function of the concentration of the latter, the pH and the temperature. The sorption of Zn2+ ions has also been studied and the data for metal ion sorption shown to correlate with the Potentiometric titration data, indicating that the process responsible for metal ion uptake is ion exchange. The pKa value of the exchanger and its thermodynamic parameters have been evaluated.

scholarly journals Chelation Ion Exchange Properties of 2, 4-Dihydroxyacetophenone-Biuret-Formaldehyde Terpolymer Resin

2009 ◽  
Vol 6 (3) ◽  
pp. 835-843 ◽  
Author(s):  
Sanjiokumar S. Rahangdale ◽  
Anil B. Zade ◽  
Wasudeo B. Gurnule
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Metal Ion ◽  
Spectral Studies ◽  
Molar Ratios ◽  
Wide Ph Range ◽  
Metal Ion Uptake ◽  
Uv Visible ◽  
Ph Range ◽  
Exchange Properties

The terpolymer resin 2, 4-HABF has been synthesized by the condensation of 2, 4-dihydroxyacetophenone (2, 4-HA) and biuret (B) with formaldehyde (F) in 1:1:2 molar ratios in presence of 2 M hydrochloric acid as catalyst. UV-Visible, IR and proton NMR spectral studies have been carried out to elucidate the structure of the resin. A terpolymer (2, 4-HABF) proved to be a selective chelating ion exchange polymer for certain metals. Chelating ion-exchange properties of this polymer were studied for Fe3+, Cu2+, Ni2+, Co2+, Zn2+, Cd2+and Pb2+ions. A batch equilibrium method was employed in the study of the selectivity of metal ion uptake involving the measurement of the distribution of a given metal ion between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The polymer showed highest selectivity for Fe3+, Cu2+ions than for Ni2+, Co2+, Zn2+, Cd2+, and Pb2+ions. Study of distribution ratio as a formation of pH indicates that the amount of metal ion taken by resin is increases with the increasing pH of the medium.

scholarly journals Ion Exchange Study of Some New Copolymer Resins Derived from 8-Hydroxyquinoline-5-sulphonic Acid, Biuret and Formaldehyde

2011 ◽  
Vol 8 (3) ◽  
pp. 1186-1199
Author(s):  
P. A. Dhakite ◽  
W. B. Gurnule
Keyword(s):  
Ion Exchange ◽  
Metal Ion ◽  
Sulphonic Acid ◽  
Rechargeable Battery ◽  
Battery Cell ◽  
Exchange Study ◽  
Plastic Materials ◽  
Wide Ph Range ◽  
Ph Range ◽  
Exchange Properties

Copolymer resins (8-HQSABF) were synthesized by the condensation of 8-hydroxyquinoline-5-sulphonic acid and biuret with formaldehyde in the presence of hydrochloric acid as catalyst, proved to be selective chelation ion exchange copolymer resins for certain metals. Chelation ion exchange properties to these polymers were studied for Cu2+, Cd2+, Co2+and Zn2+ions. A batch equilibrium method was employed in the study of the selectivity of the distribution of a given metal ions between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in a media of various ions strengths. The polymer showed a higher selectivity for Cu2+ions than for Cd2+, Co2+and Zn2+ions. Hence on the basis of above studies these copolymer may be used as semiconductors, surface coating, ion-exchangers, materials for rechargeable battery cell in various electronic industries, plastic materials, elastomers and in boiler plants

scholarly journals Ion Exchange Properties of a Terpolymer Resin Derived from 2, 4-Dihydroxybenzaldehyde, Oxamide and Formaldehyde

2009 ◽  
Vol 6 (3) ◽  
pp. 639-650 ◽  
Author(s):  
M. V. Tarase ◽  
W. B. Gurnule ◽  
A. B. Zade
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Metal Ions ◽  
Metal Ion ◽  
Polymer Sample ◽  
Equilibrium Method ◽  
Wide Ph Range ◽  
Ph Range ◽  
Exchange Properties

Terpolymer resins (2,4-DHBOF) were synthesized by the condensation of 2,4-dihydroxybenzaldehyde and oxamide with formaldehyde in the presence of hydrochloric acid as catalyst, proved to be selective chelation ion exchange terpolymer resins for certain metals. Chelation ion exchange properties of these polymers were studied for Fe+3, Cu+2, Hg+2, Cd+2, Co+2, Zn+2, Ni+2and Pb+2ions. A batch equilibrium method was employed in the study of the selectivity of the distribution of a given metal ions between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in a media of various ionic strengths. The polymer showed a higher selectivity for Fe+3, Cd+2and Co+2ions than for Cu+2, Hg+2, Zn+2, Ni+2and Pb+2ions.

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.

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