Third International Symposium On Environmental and Water ResourcesEngineering
2-3 June 2015, Tehran, Iran
A comparative study of liquid-liquid extraction of
phosphoric acid against distillation process
Sina Shekarsaraee
Department of Chemistry, Faculty of Science, University of Guilan, P.O. Box: 41335-19141, Rasht, Iran
Abstract
Liquid-liquid extraction (LLE) is one of the most important industrial process that
consumes lower energy than distillation process. It decreases loss of fossil fuels
and greenhouse gases production. In the present work, LLE of phosphoric acid
(PA) from its aqueous solution was studied using a safe organic solvent. n-Octyl
acetate was the organic extractor. the solvent has low vapor pressure and density
besides high boiling point that makes it a proper solvent to extract PA from its
solution. The results of LLE experiments was finally compared with those witch
obtained from distillation process. Distillation process was designed and simulated
by Aspen Plus 11.1. Use of this powerful software causes frugality in time and
money and provides the possibility of investigation of different conditions and
estimation of costs. The results show that LLE process could have important role
in reduction of costs and global warming and protection of natural resourses.
Key words: LLE, Phosphoric Acid, Distillation, Aspen.
*Assictant Professor of physical Chemistry