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Separation of Indium from Acid Sulfate‐Containing Solutions by Ion Exchange with Impregnated Resins
Author(s) -
Vostal Radek,
Pavón Sandra,
Kaiser Doreen,
Bertau Martin
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202100106
Subject(s) - indium , elution , ion exchange resin , chemistry , ion exchange , selectivity , sulfate , inorganic chemistry , nuclear chemistry , ion , chromatography , catalysis , organic chemistry
Indium separation using ion exchange resins from acidic polymetallic and very diluted solutions are investigated. Since the selectivity of commercial ion exchange resins have proven to be too low for an effective separation from solutions with high content of other metals, Lewatit® TP 208 was impregnated with common extractants to enhance its properties. By resin impregnation with D2EHPA and Cyanex 272, not only the selective indium recovery was reached but also the resin capacity was increased approx. two times. The best loading and elution performance were shown by Cyanex 272‐impregnated Lewatit® TP 208, increasing the indium purity in the eluate from 0.75 % to 85 %.