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Removal of Carcinogenic Polycyclic Arenes from Aromatic Softener Oils by Extraction with Dimethyl Sulfoxide and N-Pyrrolidone–Ethylene Glycol Mixed Extractant

  • Sorption and Ion Exchange Processes
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Abstract

Comparative experimental data on the four-step countercurrent extraction treatment of a mixture of naphthene vacuum gas oil and residual extract with dimethyl sulfoxide and with a 90 : 10 (wt %) mixture of N-methylpyrrolidone with ethylene glycol are presented. The mixed extractant based on N-methylpyrrolidone, compared to dimethyl sulfoxide, ensures more exhaustive removal of eight carcinogenic polycyclic arenes, including benzo[a]pyrene, from aromatic softener oil at a lower extractant to feed ratio.

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Notes

  1. Directive 2005/69/EC of the European Parliament and of the Council of November 16, 2005.

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Authors and Affiliations

  1. St. Petersburg State Institute of Technology (Technical University), 190013, St. Petersburg, Russia

    A. A. Gaile, V. N. Klement’ev & A. R. Vorob’eva

  2. Orgkhim Managing Company, 603950, Nizhny Novgorod, Russia

    A. A. Shchepalov

Authors
  1. A. A. Gaile
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  2. V. N. Klement’ev
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  3. A. A. Shchepalov
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  4. A. R. Vorob’eva
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Correspondence to A. A. Gaile.

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Gaile, A.A., Klement’ev, V.N., Shchepalov, A.A. et al. Removal of Carcinogenic Polycyclic Arenes from Aromatic Softener Oils by Extraction with Dimethyl Sulfoxide and N-Pyrrolidone–Ethylene Glycol Mixed Extractant. Russ J Appl Chem 93, 1049–1053 (2020). https://doi.org/10.1134/S1070427220070150

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  • DOI: https://doi.org/10.1134/S1070427220070150

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