Jantunen, Niklas; Virolainen, Sami; Latostenmaa, Petri; Salminen, Justin; Haapalainen, Mika; Sainio, Tuomo published the artcile< Removal and recovery of arsenic from concentrated sulfuric acid by solvent extraction>, Name: 2-Ethylhexan-1-ol, the main research area is arsenic sulfuric acid tributyl phosphate phase equilibrium solvent extraction.
Arsenic-contaminated sulfuric acid solutions are produced in large quantities as byproduct during pyrometallurgical processing of sulfide minerals. Options for re-using such acid solutions are increased if the arsenic is removed and recovered as a product. The performances of tri-Bu phosphate and a mixture of 6 wt-% 1,2-octanediol in 2-ethylhexanol were studied in liquid-liquid extraction of arsenic from an industrial solution containing 10.4 M H2SO4. It was found that, due to the complex phase equilibrium, a process design based on conventional batch equilibrium data did not describe the countercurrent processes accurately. A countercurrent flowsheet utilizing undiluted tri-Bu phosphate was investigated by pseudo-countercurrent extractions 83.7% extraction of arsenic and 31.4% coextn. of H2SO4 was obtained in three-stage countercurrent extraction operated at a solvent-to-feed ratio of 0.79. Two-stage countercurrent scrubbing with pure water at O/A = 4.03 back-extracted 83.6% of H2SO4 and 24.9% of arsenic. 100% and 89.7% back-extraction was achieved in four-stage stripping at O/A = 2.01 for H2SO4 and arsenic, resp. The effects of varying the flowsheet and operating parameters on separation efficiency are discussed.
Hydrometallurgy published new progress about Phase equilibrium Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Name: 2-Ethylhexan-1-ol.
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