Eryngium caucasicum Trautv. (Apiaceae) is a perennial herbaceous plant with about one meter height, an endemic species that has been distributed in the northern parts of Iran. The plant leaves are normally used in medicine and food industries in Iran.The plant has several medicinal properties including enforcing generative power, diuretic, lenitive and appetizer. In this research differents par...

Background and objectives: It is necessary to specify the best conditions of essential oils production to get more major compound(s) and higher yield oil. The fennel oil is useful in pharmaceutical industry as flavor. The main component of fennel oil is anethole (55-75%). The objective of this work was to identify the effect of  particle size, pH of water, method of distillatio...

The method of false nearest neighbors (FNN) is presented here as a tool for analyzing the \dimensionali-ty" of a nonlinear input/output system directly from data. A unique feature of this method is that no speciic model structure is assumed, the dimensional determination is made directly from topological considerations. An extension to the FNN algorithm is given to consider the problem of infer...

The minimum energy requirements of six different heat-integrated multi-effect and three non-integrated distillation arrangements for separating a ternary mixture have been considered. The focus of the paper is on a heat-integrated complex distillation configuration; called a multi-effect prefractionator arrangement. The comparison of the different arrangements is based on the minimum vapour flo...

The effectiveness of an extractive distillation process relies on the choice of the extractive solvent. The conventional methodology to select solvents is based on Group Contribution Methods. Ionic liquids have shown several advantages over conventional solvents used in extractive distillation and liquid-liquid extraction processes. However, there is no existing methodology to select ILs as sol...

Abstract This paper presents the nonlinear dynamic analysis of an ideal two-reactant-two product reactive distillation. The impact of disturbance magnitudes and directions on openloop stability of the system is studied. An analysis of the physicochemical phenomena present in reactive distillation processes that, under certain operational conditions, causes special types of nonlinear behavior is...

background and objectives: red beet extract concentrate can be used as a natural colorant in food products; however, destructive effects of thermal methods to produce juice concentrate decrease nutritional value in the final product. materials and methods: in this study, red beet extract was concentrated using osmotic distillation method, and the best pretreatment was evaluated to increase the ...

Non-pinched, minimum energy solutions are important class of distillation designs that offer the potential advantage of a better trade-off between capital investment and operating costs. In this paper, two important tasks associated with non-pinched distillation designs are studied. Thus the novel contributions of this work to the literature are (1) A comprehensive methodology for finding non-p...

The simulation and steady state operation of a vapor recompression pilot plant distillation column is studied in order to improve the thermal efficiency. A binary system of ethanol-water mixture is used. The simulation is carried through ASPEN PLUS version 9.3-1. Energy reduction of 89.26% is obtained comparing to the conventional distillation and the thermodynamic efficiency is improved from 1...