Synthesis and characterization of an N-(2-hydroxyethyl)-ethylenediaminetriacetic acid resin

Thesis/Dissertation · Sat Oct 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5344853· OSTI ID:5344853

Lai, Yuet Fan ^[1]

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1. Iowa State Univ., Ames, IA (United States)

A chelating ion-exchange resin with N-(2-hydroxyethyl)ethylene-diaminetriacetic acid (HEDTA) used as the ligand chemically bonded to XAD-4 by an ester linkage, HEDTA-4, was synthesized. It is stable under normal experimental conditions with the liquid chromatograph. The structure of the resin was confirmed by an infrared spectrum, and by potentiometric titrations. The capacity of the resin was also obtained by potentiometric titration and by a nitrogen analysis. The resin was used to pack a column of 5 mm internal diameter and 5 cm long. The effect of pH on the retention of different metal ions on the resin was studied. It was found that the resin was most selective for chromium(III), copper(II), lead(II), mercury(II), uranium(VI), zirconium(IV) and zinc(II) at a pH of less than 3. Furthermore, the resin proves to be functioning with a chelating mechanism rather than ion-exchange, and it can concentrate trace metal ions in the presence of a large excess of calcium and magnesium. This makes the resin potentially useful for purifying and analyzing drinking water.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5344853
• Report Number(s): IS-T--770
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
CHEMICAL PREPARATION
CHROMIUM
COPPER
ELEMENTS
ION EXCHANGE
ION EXCHANGE MATERIALS
LEAD
MERCURY
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
SORPTIVE PROPERTIES
SYNTHESIS
TRANSITION ELEMENTS
URANIUM
ZINC
ZIRCONIUM