Model Of Extraction Process Research Articles

A computer program for the dynamic simulation of a semi-batch supercritical fluid extraction process

The mathematical model of a semi-batch supercritical fluid extraction process has been derived; its implementation is divided into two distinct stages. Firstly, the differential equations that represent the dynamic behavior of the process are derived. Secondly, a thermodynamic model suitable for representation of phase behavior is selected and the algebraic equations and the parameters which describe the process are identified. The proposed algorithm is used to simulate the fractionation of ethanol from a water mixture using carbon dioxide, and the supercritical extraction of citral from lemon oil with carbon dioxide. The program is applicable to the simulation of extraction from liquids and, with some modifications, from solids.

Development of a plasmatron ion source for an electromagnetic isotope separator

A plasmatron ion source with slit geometry for the Seibersdorf electromagnetic isotope separator has been developed; in its present state this ion source delivers well focused noble gas ion beam in the mA-range at the collector. The influence of the various parameters of this special ion source on the properties of the extracted ion beam is discussed and a comparison with a simple extraction process model has been made.