Mass Transfer in the Solid-Liquid System: Mechanism and Kinetics of the Extraction Process

Abstract

The mechanism and kinetics of the target components extraction from mineral raw materials (sulfur from sulfur ore by tetrachlorethylene, Al 2 O 3 from bauxite specs by NaOH, copper from ore and malachite by hydrochloric acid), as well as vegetable oils (from amaranth, amaranth hybrid and сamelina by organic solvents) have been studied. Experimental studies to confirm the diffusive nature of the target components extraction from mineral sources have been conducted. Diffusion coefficients for mineral samples have been obtained. It has been established that the target component extraction from the plant raw material occurs by the internal diffusion transfer of the component to the surface of the phase contact and the external diffusion from the surface to the liquid volume. Kinetic and diffusion coefficients for the samples of vegetable raw materials were determined.

Research of the soybean oil extraction using polar solvents

“…The extraction method is widely used in world industry due to the high efficiency of extraction of oils not only from raw materials with a high content of the target component but also those where the concentration of the latter does not exceed 5% [2,4].…”

Mathematical Simulation of Nanofiltration Process: State of Art Review

“…In chemical technology, the mixture separation including water treatment processes plays an extremely important role [1][2][3][4] . In recent decades the application of nanofiltration process is significantly increasing.…”

Synthesis of Copolymer from 1,3,5-Trioxane and -Caprolactone Catalysed by Treated Bentonite as Eco-Catalyst

“…The most available and renewable raw materials for the production of higher fatty acids and their salts are vegetable oils and by-products of their production. [31][32][33][34][35] Taking into account that Ukraine is one of the world's leading producers of sunflower oil, tens of thousands of tons of oily spent adsorbent, which belongs to hazard class IV, 36 are obtained only at the purification stage. That is why the creation of technologies for processing and using by-products and wastes from the main stages of sunflower oil production is a topical issue.…”