Reduction of NaCl content in aqueous diallyldimethylammonium chloride solution through supercritical fluids extraction

摘要

This work investigated how to reduce NaCl in aqueous DMDAC solution when individually using supercritical CO2 and N2O as the extractants. After supercritical N2O extraction at 333 K and 30.7 MPa, the NaCl content in the bottom of the vessel could decrease to 0.3%. However, the quantity of DMDAC also lost 14.0% in the bottom. The ability of removing NaCl using N2O is much better than that using CO2. [References: 8]