Acetic acid can be readily separated from water by using azeotropic distillation. Acetic acid is difficult to separate from water by conventional distillation or rectification because of the close proximity of their boiling points.

Thank you for your suggestion sir Prem Baboo

YOu can think of a liquid liquid extraction using an adequate solvant

or extractive distillation .

The two methods are frequently used instead of distillation when mixtures containe very close boiling point components .

Dear Narayanan Subramanian

I fully agree with Nawal Azrou , you can try a LL-extraction as the first step. Please refer to the picture attached as example. As you can see from the second picture you will need to use an entrainer for the extractive distillation. The examples are based or the following work:

Vitasari, C.R., Meindersma, G.W., de Haan, A.B. 2015. Conceptual process design of an integrated bio-based acetic acid, glycolaldehyde, and acetol production in a pyrolysis oil-based biorefinery. Chemical Engineering Research and Design, 95, 133-143.

Regards,

J.L

Presumably, the use of integrated processes such as extractive distillation or azeotropic distillation can help here.