Dehydration of a Dilute Acetic Acid-Water Mixture via Batch Heteroazeotropic Distillation

Hao Gao, Fei Zhao, Lingyan Zhu, Fan Yang, Yaqian Wang, Dongbing Li

Research output: Journal PublicationArticlepeer-review

6 Citations (Scopus)


Dehydration via batch heteroazeotropic distillation emerges as a promising technology for the recovery of acetic acid (HAc) from dilute aqueous solutions. In this preliminary work, this process was studied with the aid of Aspen Batch Modeler®, using an acetic acid aqueous solution as the model feed instead of wood vinegar from biorefineries and n-butyl acetate as the azeotropic entrainer. The non-random two liquids (NRTL)-virial Hayden-O'Connell model (HOC) model was chosen to calculate the thermodynamic properties. The response surface methodology with Box-Behnken design was successfully applied to obtain optimum process conditions, providing a dehydrated HAc product from the pot with high purity and recovery.

Original languageEnglish
Pages (from-to)477-487
Number of pages11
JournalChemical Engineering and Technology
Issue number3
Publication statusPublished - Mar 2021
Externally publishedYes


  • Batch heteroazeotropic distillation
  • Box-Behnken design
  • Dilute acetic acid
  • Process simulations
  • n-Butyl acetate

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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