Preferably, pressure waves are applied to {TAIL ~ the supercritical CO2} to enhance {HEAD ~ the solvent exchange} 
Preferably , pressure waves are applied to { TAIL ~ the supercritical CO2 } to enhance { HEAD ~ the solvent exchange }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD