Ethane as an alternative solvent for supercritical extraction of orange peel oils

摘要: Abstract The objective of this study was to investigate the superiority ethane in comparison CO2 as a supercritical extraction solvent for deterpenating citrus oils. A rigorous computer code developed that optimized column operating conditions minimize recirculation. SRK equation state used thermodynamic model after globally optimizing its adjustable binary interaction parameters combination different literature data sets consisting isothermal P–x, y, ternary constant composition P–T, and isobaric x–y data. An investigation effects process variables on degree revealed complicated interconnected relations among efficiencies. However, since deterpenation, particular, benefits from higher solubility more than selectivity, increases temperature, pressure, solvent-to-feed ratio, reflux rate all seem favor separation. To compare performance carbon dioxide orange oil selectivities separation between terpene aroma fractions were calculated compared two solvents. Compared CO2, is better constituents. This results decreased solvent/feed mass ratio when processes are at same reduced pressure. these not only over CO2. As critical pressure lower, absolute pressures columns can be lower.