E3S Web Conf.
Volume 18, 2017Mineral Engineering Conference MEC2017
|Number of page(s)||5|
|Published online||04 October 2017|
Studies of the aromatic β-diketones as extractant of copper ions
Faculty of Chemical Technology and Engineering, UTP University of Sciences and Technology, Seminaryjna 3, PL-85326 Bydgoszcz, Poland
* e-mail: Katarzyna.Witt@utp.edu.pl
Benzoylacetone 2, dibenzoylmethane 3and acetylacetone 1were studied as extractants of copper ions by liquid-liquid partition and spectrophotometric methods. Extraction ability increase in order 1< 2< 3. The values of pH1/2, corresponding to 50% of the extraction of copper, are equal to 10.75, 10.08 and 9.85 for 1, 2, 3, respectively. The extraction process is the most effective when 3was used as extractant, the maximum amount of copper ions passed to the organic phase is 50% and 99% for 1and 3, respectively. The spectra have shown that in the aqueous and in the organic phase β-diketone form two chelated complexes [CuL]+ and [CuL2]. Partition ratios (P2) of [CuL2] complexes have very high values, much higher than P1. That complexes determine the efficiency of extraction process of Cu(II) ions, what confirm the electron absorption spectra.
© The Authors, published by EDP Sciences, 2017
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