Experimental Study and Modeling of Essential Oil Extraction from Plants by Hydrodistillation

Abstract

Hydrodistillation of essential oils from leaves of myrtle, rosemary, and sour orange was experimentally studied and the extraction process was modeled. A mass balance was carried out over an assumed flat leave particle and the use of Fick's second law of diffusion led to the mass transfer equation. Its resolution required adequate boundary and initial conditions. The model considered the effect of the main processing parameters on the overall essential oil extraction efficiency as well as the determination of the optimum conditions. To assess the reliability of the model, yield curves for all studied conditions and variation of the oil composition with time were compared with the experimentally obtained results for each plant leave. The agreement seems to be reasonable, although some refining of the model is necessary by taking into account both the diffusion and reaction contributions.

Estimation of mass transfer coefficients of the extraction process of essential oil from orange peel using microwave assisted extraction

“…2). These results confirm that reducing the particle size of the sample facilitates diffusion (and extraction) of the EO, because it permits increasing surface contact to occur between the plant material and the solvent, therefore facilitating essential oil extraction processes (Haj Ammar et al, 2013). However, the values of k s obtained are low compared with the values obtained by Farhat et al (2009) for the diffusion of lavender flowers EO during microwave steam diffusion (MSD).…”

RETRACTED: Comparison of conventional and microwave-assisted distillation of essential oil from Pogostemon cablin leaves: Analysis and modelling of heat and mass transfer

“…The values for k 2 were determined and are also presented in Table 3; it can be seen that the constant associated to the diffusion controlled period obtained for extraction of EOs with conventional HD were lower than the obtained in extraction of EOs with microwaves (MAHD and SFME). These results confirm that microwave heating facilitates diffusion (and extraction) of the EO, because it permits increasing heating rate to occur between the plant material and the solvent (water), therefore facilitating EO extraction processes (Haj Ammar et al, 2013). Further, when extraction of EOs with SFME is used, the constant associated to the diffusion controlled period obtained for extraction of EOs were H.S.…”

Research Progress on Monitoring and Separating Suspension Particles for Lubricating Oil

“…According to the different purification methods, the traditional method of purifying oil is mainly divided into physical methods, chemical methods, and conjunction methods [46]. The physical methods mainly include sedimentation [47], filtration [48], distillation [49], and centrifugation [50]. The chemical method is mainly sulfuric acid-bearing clay refining technology [51].…”