Reactive extraction of succinic acid using supercritical carbon dioxide

ABSTRACT

Reactive extraction using supercritical carbon dioxide (scCO₂) and tri-n-octylamine (TOA) was evaluated as a separation method of succinic acid from an aqueous solution. The reactive extraction of succinic acid was performed at varying initial acid concentrations in aqueous solution (0.07–0.45 mol∙dm⁻³), temperature (35–65°C) and pressure (8–16 MPa). The succinic acid separation was conducted in both batch mode and semi-continuous mode. The highest reactive extraction efficiency of approx. 62% was obtained for the process conducted in semi-continuous mode at 35°C and 16 MPa for the initial acid concentrations in aqueous phase of 0.39 mol∙dm⁻³.

KEYWORDS:

• Reactive extraction
• Succinic acid
• Supercritical carbon dioxide
• Tri-n-octylamine

Funding

This project was funded by the National Science Center (Poland) granted on the basis of decision no. DEC-2013/09/N/ST8/04336.

Additional information

Funding

This project was funded by the National Science Center (Poland) granted on the basis of decision no. DEC-2013/09/N/ST8/04336.