Production of Nickel Metal Powder from a Spent Etching Solution by Solvent Extraction and Chemical Reduction
Nickel metal powder with 99% purity was obtained from a spent FeCl3 etching solution by employing solvent extraction and chemical reduction. Iron and nickel was separated from the spent etching solution by solvent extraction with Alamine336. Iron in the spent etching solution was extracted into the organic phase, while nickel remained in the aqueous solution together with a small amount of iron. After eliminating iron in the aqueous solution by precipitation, nickel metal powder was obtained by chemical reduction with hydrazine at reaction temperature of 100 °C and at solution pH of 10.5. Chemical reduction at this specified condition led to nanosized spherical black nickel metal powder with 99% purity.
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Document Type: Research Article
Publication date: 2011-02-01
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