The aim of this study was to develop five empirical and three mass-transfer based models for fitting the SFE process. Additionally, the determination of the effect of SFE parameters (pressure, temperature, CO flow rate and mean particle size) on kinetic curves and model parameters was investigated. Among the selected models, all empirical and mass-transfer models provided adequate fit with experimental data. However, mass-transfer model VIII has proved to fit the experimental results accordingly and has shown that the most influential parameters were pressure and CO flow rate. The pressure and CO flow rate exhibited positive effect, while the temperature had rather negative impact on Y. In addition, the initial slopes of Model VIII were calculated in order to increase the efficiency and reduce unnecessary process costs.

中文翻译：

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通过超临界流体萃取对野生百里香 (Thymus serpyllum L.) 草药粉末进行增值 – 实验和建模

本研究的目的是开发五个经验模型和三个基于传质的模型来拟合 SFE 过程。此外，还研究了 SFE 参数（压力、温度、CO 流量和平均粒径）对动力学曲线和模型参数的影响。在选定的模型中，所有经验模型和传质模型都与实验数据充分吻合。然而，传质模型 VIII 已被证明与实验结果相符，并表明最有影响力的参数是压力和 CO 流量。压力和CO流量表现出积极的影响，而温度对Y有相当负面的影响。此外，计算模型VIII的初始斜率以提高效率并减少不必要的过程成本。