Extraction process design for the separation of aromatic and aliphatic hydrocarbons using organic solvent, ionic liquid or their mixture: a comparative study

  • M. Addouni
  • H. BenyounesEmail author
  • S. JinEmail author
  • B. Haddou
  • W. Shen
Original Paper


The goal of the present work is focused on the design of a liquid–liquid extraction process using organic solvent, ion liquids (IL), as well as their mixture. For this purpose, the sulfolane/[bmim][SCN] system was investigated. Benzene–heptane binary mixture has been selected as a case study representing aromatic and aliphatic hydrocarbon families, respectively. A comparative study among three proposed extraction processes employing the traditional organic solvent sulfolane, [bmim][SCN] and the system of sulfolane/[bmim][SCN] has been provided to determine the optimal process for benzene extraction. For feed containing less than 50 wt% of benzene, it was recommended to use a mixed solvent containing 60 wt% of [bmim][SCN].


Ionic liquid Aromatic hydrocarbon UNIQUAC model Liquid–liquid extraction 



We acknowledge the financial support provided by the National Natural Science Foundation of China (nos. 21878028, 21606026); the Fundamental Research Funds for the Central Universities (nos. 106112017CDJQJ228809, 2018CDYJSY0055); the Chongqing Research Program of Basic Research and Frontier Technology (no. CSTC2016JCYJA0474); and Hundred Talents Program at Chongqing University. Helpful comments and suggestions from the reviewers and editor are also gratefully acknowledged.


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Copyright information

© Associação Brasileira de Engenharia Química 2020

Authors and Affiliations

  1. 1.U.S.T. Oran Laboratory of Physical Chemistry of Materials, Catalysis and EnvironmentOranAlgeria
  2. 2.School of Chemistry and Chemical EngineeringChongqing UniversityChongqingPeople’s Republic of China

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