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- W2026267333 abstract "An experimental procedure is presented for the separation of Cr(VI) and Cr(III) from aqueous solutions, natural water and leather tanning waste using powdered active charcoal (PACh) as an adsorbent and oleic acid (HOL) as a surfactant. Several parameters (namely: the initial concentrations of surfactant and active charcoal, pH value, ionic strength, shaking time, temperature and foreign ions) that influence the separation process were studied. Good results were obtained, according to which more than 98% of Cr(VI) at pH 2.0 or Cr(III) at pH 7.5 were removed. The selective separation of Cr(VI) from Cr(III) was also examined, since the system Cr(III)/Cr(VI) is toxic, and occurs in industrial effluents and some surface waters. The procedure may find analytical applications for speciation studies. Moreover, a flotation mechanism is suggested." @default.
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- W2026267333 date "2001-07-01" @default.
- W2026267333 modified "2023-09-23" @default.
- W2026267333 title "Flotation-Separation of Chromium(VI) and Chromium(III) from Water and Leathers Tanning Waste Using Active Charcoal and Oleic Acid Surfactant" @default.
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- W2026267333 doi "https://doi.org/10.1246/bcsj.74.1273" @default.
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