THERMODYNAMIC-TOPOLOGICAL ANALYSIS OF THE PHASE DIAGRAM STRUCTURE OF A FIVE-COMPONENT SYSTEM AND SEPARATION SCHEME SYNTHESIS FOR A MIXTURE OF ORGANIC PRODUCTS

Cocoyam (Xanthosoma sagittifolium (L.) Schott) is a tropical plant of the family of Araceas. Nigeria, China and Ghana are the countries that currently own most of the world production of this plant. In Colombia, there are not extensive crops of this plant, but it is used for animal feeding mainly. The plant has an aerial part with a high content of protein (leaves) and a tuber with an average starch content about 25% w/w. Compared to others starchy raw materials, this is a high value. Due to this fact this first-generation starchy material could be considered as a possible feedstock for the production of ethanol. Process design must ensure that the most advanced concepts are applied at the design and processing stage for every raw material to ensure efficient and more sustainable processes. For this reason, thermodynamic-topological analysis was used for the design of the stage of the produced ethanol purification. This work presents the process of ethanol production using cocoyam tuber. The software Aspen Plus v8.6 (Aspen Technology, Inc., USA) was used for the techno-economic assessment, and the Waste Reduction Algorithm (WAR) of the Environmental Protection Agency of the EE.UU. (EPA) was used to measure the environmental performance. The obtained production cost was 1,6 USD per kilogram, and the environmental impact was very low. This is an excellent incentive to promote the application of this feedstock to obtain a feasible alternative for the production of ethanol. Additionally, the use of thermodynamic-topological analysis in the design stage of the purification stage of the process proved to be very useful and easily applied.

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LATTICE MODEL OF ADSORPTION OF MULTISITE TRIANGLES WITH ATTRACTIVE VERTEXES: PARAMETRIZATION FOR 1, 3, 5-TRIS(PYRIDYL)BENZENE AND CU ON OXIDATED TITANIUM CARBIDE SURFACE

Applied Mathematics and Fundamental Informatics ◽

10.25206/2311-4908-2020-7-4-4-11 ◽

2020 ◽

Vol 7 (4) ◽

pp. 004-011

Author(s):

O. S. Solovyeva ◽

◽

V. A. Gorbunov ◽

A. V. Myshlyavtsev ◽

◽

...

Keyword(s):

Phase Diagram ◽

Monte Carlo Simulation ◽

Monte Carlo ◽

Ground State ◽

Lattice Model ◽

Adsorption Layer ◽

Ground State Phase Diagram ◽

Component System ◽

Simple Lattice ◽

Metal Organic

In this paper, a simple lattice model of the metal-organic adsorption layer of 1,3,5- tris(pyridyl)benzene and copper on the surface of Ti2CO2 was proposed. In this model, the selfassembly of the organometallic layer is considered as a one-component system that implicitly includes metal adatoms. The ground state phase diagram is calculated. A Monte Carlo simulation is performed using the Metropolis algorithm and the parallel temperature technique. The isotherm of the metal-organic is calculated at T = 300 K. All the results indicate the possibility of the formation of stable metal-organic phases on the Ti2CO2 surface.

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Phase diagram and physical properties of the sodium niobate-lithium niobate-cadmium niobate three-component system

Technical Physics ◽

10.1134/1.1340880 ◽

2001 ◽

Vol 46 (1) ◽

pp. 24-28

Author(s):

L. A. Reznichenko ◽

O. N. Razumovskaya ◽

L. A. Shilkina ◽

A. Ya. Dantsiger ◽

S. I. Dudkina ◽

...

Keyword(s):

Phase Diagram ◽

Lithium Niobate ◽

Physical Properties ◽

Sodium Niobate ◽

Component System ◽

Niobate Lithium

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Geometric Relation of Equilibrium Phase in Multi-Component System Phase Diagram

Contributed Papers from MS&T17 ◽

10.7449/2017/mst_2017_1339_1345 ◽

2017 ◽

Author(s):

C. Liu ◽

J. Qiu ◽

L. Sun ◽

M. Jiang

Keyword(s):

Phase Diagram ◽

Equilibrium Phase ◽

Component System ◽

Geometric Relation ◽

System Phase Diagram ◽

Multi Component System ◽

System Phase

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Phase Diagram of a Lattice Model for Ternary Mixtures of Water, Oil, and Surfactants

MRS Proceedings ◽

10.1557/proc-248-23 ◽

1991 ◽

Vol 248 ◽

Cited By ~ 1

Author(s):

Mohamed Laradji ◽

Hong Guo ◽

Martin Grant ◽

Martin J. Zuchkermann

Keyword(s):

Phase Diagram ◽

Monte Carlo ◽

Phase Behavior ◽

Lattice Model ◽

Large Scale ◽

Ternary Mixtures ◽

Rich Phase ◽

Component System ◽

Chemical Potentials ◽

Wide Range

AbstractLarge scale Monte-Carlo simulations have been performed on a lattice model for a three component system of water, oil, and surfactants to obtain the phase equilibria and scattering behavior for a wide range of temperatures and chemical potentials. We observed that this model has a rich phase behavior, namely a water-oil phase coexistence, a microemulsion phase, a lamellar phase, and a square phase. This phase diagram is consistent with experiments, and is in qualitative agreement with a model of Gompper and Schick [ Phys. Rev. Lett. 62, 1647 (1989)].

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PHASE EQUILIBRIA IN SYSTEM K,Са//SO4,HCO3,F-H2O AT 25 °C

IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA ◽

10.6060/tcct.20186103.5667 ◽

2018 ◽

Vol 61 (3) ◽

pp. 26

Author(s):

I. Jabborov ◽

L. Soliev ◽

I. Nizomov ◽

J. Musodzonova

Keyword(s):

Phase Diagram ◽

Phase Equilibria ◽

Reciprocal System ◽

Component Composition ◽

Scientific Data ◽

Translation Method ◽

Phase Rule ◽

Component System ◽

Component Systems ◽

Phase Complex

The article describes a study on the identification of possible phase equilibria in mutual geometrical images of five-component system of water and salt from sulfates, bicarbonates, potassium and calcium fluoride at 25 °C, followed by the construction of its phase diagram complex. Knowledge of the laws governing the structure of the phase complex of this system is necessary not only to obtain new scientific data as reference material, but also to contribute to the creation of optimal conditions for the utilization of liquid wastes of aluminum industrial production containing the system of salts that make up this system. To solve the problem, we used the translation method, which is based on the position according to which the dimension of the geometric images of the diagram of the original (private) system increases by one by adding a subsequent component, due to its concentration, i.e. are transformed. Since the investigated five-component system consists of five particular four-component systems, the addition of the fifth component to any of them is accompanied by transformations of the geometric images of all five four-component systems. Transformed geometric images according to their topological properties are broadcasted to the level of a five-component composition. At the level of the five-component composition, the transformed geometric images, in accordance with the Gibbs phase rule, intersect each other forming geometric images of a given level of componentness. Investigation of phase equilibria five-component water-salt reciprocal system of sulfates, bicarbonates, potassium and calcium fluorides and construction of its phase diagram with complex translation method (at 0°C) showed that it is characterized by fifteen divariant fields, thirteen monovariant curves, and four invariant points. On the basis of the obtained data, the complete closed phase diagram of the investigated system was constructed for the first time and, for the convenience of its reading, it is fragmented by the regions of divariant equilibria.Forcitation:Jabborov I., Soliev L., Nizomov I., Musodzonova J. Phase equilibria in system K,Са//SO4,HCO3,F-H2O at 25 °C. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 3. P. 26-30

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RESEARCH OF VARIOUS ISO-MANIFOLDS IN FOUR COMPONENT SYSTEMS CONTAINING BIAZEOTROPIC BINARY CONSTITUENTS

Тонкие химические технологии ◽

10.32362/2410-6593-2018-13-1-45-54 ◽

2018 ◽

Vol 13 (1) ◽

pp. 45-54 ◽

Cited By ~ 1

Author(s):

F. N. Bedretdinov ◽

T. V. Chelyuskina

Keyword(s):

Propionic Acid ◽

Butyric Acid ◽

Topological Analysis ◽

Mutual Arrangement ◽

Extractive Agent ◽

Butyl Butyrate ◽

Extractive Rectification ◽

Component Systems ◽

Commercially Important ◽

Thermodynamic Topological Analysis

In the present work, an analysis of the mutual arrangement of a number of iso-manifolds in the concentration tetrahedron formed by the components of the separated mixture and an additional substance, an extractive agent, was carried out to estimate the possibility of separating three-component mixtures containing biazeotropic constituents by extractive rectification. The objects of research were four-component systems formed by ternary constituents (butyl propionate (BP) - propionic acid (PA) - butyl butyrate (BB), butyl propionate - propionic acid - butyric acid (BA), butyl butyrate - butyric acid -butyl propionate, butyl butyrate - butyric acid -propionic acid) of the commercially important BP-PA-BB-BA system, and the extractive agent sulfolane. Using the results of the computational experiment based on mathematical model NRTL-HOC we obtained complete data on the vapor-liquid equilibrium in binary, three- and four-component systems. The structures of liquid-vapor phase diagrams were obtained, and thermodynamic-topological analysis of all four-component systems was carried out. The mutual arrangement in the concentration tetrahedron of manifolds of relative volatility (equal to 1) of the components, reflecting the evolution of pseudo-azeotropes in sections with a constant concentration of the extractive agent; pseudo-ideal manifolds along which the activity coefficients of the components of the base (separated) mixture are equal to each other; isothermo-isobaric manifolds generated by Bancroft points in binary azeotropic constituents were determined. We established that it is possible to separate the studied three-component mixtures by extractive rectification using sulfolane.

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