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Nitric acid was employed to strip silver from loaded 5,8-diethyl-7-hydroxy-dodecan-6-oxime (LIX63) in the recovery of silver from a leaching solution of a spent Ag/α-Al2O3 catalyst. The loaded LIX63 was obtained by contacting the real leaching solution with 0.5 mol/dm3 LIX63 diluted in kerosene. In order to produce silver powder by reduction, the HNO3 in the stripping solution was recovered by extraction with tri 2-ethylhexyl amine (TEHA) followed by stripping with distilled water. Silver powder was obtained by reduction with 0.1 mol/dm3 L-ascorbic acid. A owsheet was proposed to recover Ag from the leaching solution of the spent Ag/α-Al2O3 catalyst by solvent extraction and reduction with minimum waste emissions. [doi:10.2320/matertrans.M2017019]

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Recovery of Silver from the Nitrate Leaching Solution of a Spent Ag/α-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Catalyst by Solvent Extraction and Reduction