Synergistic effects of HEHEHP and HDEHP for vanadium (IV) extraction in sulfuric acid.

Novel mechanisms for synergistic extraction of vanadium (IV) by HEHEHP and HDEHP.

Thermodynamic parameters of different vanadium extraction system.

Fourier transform infrared (FT-IR) spectroscopy shows that there is an association reaction between HEHEHP and D2EHPA during the synergistic extraction process.

This extraction system improves the back-extraction performance of the extractant thereby reducing the consumption of H₂SO₄ observably.