TY - JOUR AU - Biswas, R. K. AU - Ali, M. R. AU - Habib, M. A. AU - Salam, S. M. A. AU - Karmakar, A. K. AU - Ullah, M. H. PY - 2010/12/20 Y2 - 2024/03/29 TI - Solvent Extraction of Fe(III) from Aqueous Chloride Solution by Cyanex 301 Dissolved in Kerosene JF - Journal of Scientific Research JA - J. Sci. Res. VL - 3 IS - 1 SE - Section B: Chemical and Biological Sciences DO - 10.3329/jsr.v3i1.6263 UR - https://banglajol.info/index.php/JSR/article/view/6263 SP - 97 AB - <p>The title system has been investigated over a wide range of aqueous acidity. The equilibration time is 1 h. The extraction ratio (<em>D</em>) is independent of [Fe(III)] provided equilibrium [HCl] and [HA] are kept constant. At a constant equilibrium extractant concentration, the [HCl] dependences are -1.6, ~0 and -3 in the [HCl] regions of &gt;3, 2-0.5 and &lt;0.3 M; respectively; whilst at constant [HCl], the [HA] dependence is 3.0. On the other hand, [Cl<sup>-</sup>] dependence varies within -0.5 to -3 at constant [HCl] of 0.3 M; whereas its values are ~ -1 and ~ 0.63 at constant [HCl] of 3 and 1 M, respectively. Based on these results the extraction mechanisms have been suggested to be + 3 HA<sub>(o)</sub> ? FeA<sub>3(o)</sub> + n Cl<sup>-</sup> + 3 H<sup>+</sup> in the low [HCl] region, &nbsp; &nbsp;+ 3 HA<sub>(o)</sub> + n Cl<sup>-</sup> ? FeCl<sub>3</sub>.3HA<sub>(o)</sub> in the intermediate [HCl] region and HFeCl<sub>4</sub> + 3 HA<sub>(o)</sub> ? FeCl<sub>3</sub>.3HA<sub>(o)</sub> + HCl in the high [HCl] region under investigation. The <em>K<sub>ex</sub></em> &nbsp;and &Delta;<em>H</em> values have been evaluated. Loading capacity is 5.5 g Fe(III)/100 g Cyanex 301. The stripping can be made effective by a mixture of 6 M H<sub>2</sub>SO<sub>4</sub> and 1 M Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub>.</p><p><em>Keywords</em>:&nbsp; Extraction equilibrium; Fe(III) extraction; Cyanex 301; chloride medium.</p><p>&copy; 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.</p><p>doi:10.3329/jsr.v3i1.6263&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; J. Sci. Res. <strong>3 </strong>(1), 97-109 (2011)</p> ER -