extraction process entrainers

Separation of acetonitrile + isopropanol azeotropic ...

Jun 23, 2020· Three ionic liquids, including 1-ethyl-3-methylimidazolium acetate ([EMIM][Ac]), 1-butyl -3-methylimidazolium acetate ([BMIM][Ac]) and 1-hexyl -3-meth…

Supercritical Extraction Processes

I 63 '0 E 0 0 I I E 0 GB Report No. 197 SUPERCRITICAL FLUID PROCESSING by WING SIEN FONG July 1989 A private report by the PROCESS ECONOMICS PROGRAM

SEPARATION OF ETHANOL AND WATER BY EXTRACTIVE …

ethanol produced by such a process can be used only as gasohol and for this particular process the amount of solvent is high and can only be applied with a petroleum refinery (Chianese and Zinnamosca, 1990). Extractive distillation is a partial vaporization process, in the presence of a non-volatile and high

Optimization of the Sulfolane Extraction Plant Based on ...

Oct 05, 2002· The sulfolane extraction process is widely used in benzene−toluene−xylene (BTX) plants to separate aromatics from hydrotreated feedstocks. Operation of the sulfolane process affects essentially the overall efficiency of BTX plants. In this paper a model and optimization system for the sulfolane extraction plant was developed based on simulation.

Design and Optimization of Acetic Acid Dehydration Processes

This process design is considered to be comparatively effective because of the lower total energy requirement needed in the process . The choice of extraction solvent severely affects the efficiency of the extraction process. Kürüm et al. (1995)[4] evaluated 34 types of possible entrainers …

Extraction of strawberry leaves with supercritical carbon ...

Extraction of strawberry leaves with supercritical carbon dioxide and entrainers: Antioxidant capacity, total phenolic content, and inhibitory effect on uric acid production of the extract

Ionic-Liquid-Mediated Extraction and Separation Processes ...

Ionic liquids (ILs) have been proposed as promising media for the extraction and separation of bioactive compounds from the most diverse origins. This critical review offers a compilation on the main results achieved by the use of ionic-liquid-based processes in the extraction and separation/purification of a large range of bioactive compounds (including small organic extractable compounds ...

Separation of azeotropic mixtures using hyperbranched ...

Separation of azeotropic mixtures using hyperbranched polymers or ionic liquids ... viscosity, and thermal stability can be customized, they appear superior to many conventional entrainers and extraction solvents. For the ethanol ... Evaluation of a new THF–water separation process indicates the competitiveness of the suggested process and a ...

Systematic design of an extractive distillation for ...

A systematic approach to design of two‐column extractive distillation for separating azeotropes with heavy entrainers has been proposed. A thermodynamic feasibility analysis for azeotropes with potential heavy entrainers was first conducted. Then, five important properties are …

Extraction of pesticides from contaminated soil using ...

@article{osti_6830276, title = {Extraction of pesticides from contaminated soil using supercritical carbon dioxide}, author = {Hunter, G.B.}, abstractNote = {The demand for processes to clean up contaminated soils without generating additional contaminants, such as hazardous solvents, is increasing. One approach to minimizing this problem is to use supercritical fluids like light …

Special Issue "Advances in Supercritical Fluid Extraction"

The term 'supercritical fluid extraction' is generally applied to the use of supercritical carbon dioxide, neat or with entrainers (co-solvents). However, this term should also include other fluids, namely supercritical water, methanol, or ethanol, among a few others.

CHAPTER – 2 SOLVENT EXTRACTION

2. SOLVENT EXTRACTION Although solvent extraction as a method of separation has long been known to the chemists, only in recent years it has achieved recognition among analysts as a powerful separation technique. Liquid-liquid extraction, mostly used in analysis, is a technique in

Chemical Engineering: Selecting Entrainers for Azeotropic ...

Entrainers are also used to enable the separation of non-azeotropic mixtures where the direct separation is either not feasible due to process constraints (e.g., maximum operating temperature) or highly uneconomical (e.g., due to the presence of a severe tangent …

Extraction of pesticides from contaminated soil using ...

The clean-up of contaminated soils by supercritical fluid extraction (SFE) can be increased significantly with entrainers. Lab-scale and technical-scale experiments were carried out with contaminated soils and PAH spiked soil, because of their low volatility which renders their removal.

Extractive distillation of methylal/methanol mixture using ...

Extractive distillation of methylal/methanol mixture using the mixture of dimethylformamide (DMF) and ionic liquid as entrainers ... to evaluate how much energy and materials consumption could be saved in the extractive distillation process with the new mixed entrainers when compared to pure DMF. ... S. DaiIonic liquids-based extraction: a ...

Principles of supercritical fluid systems (5) What is ...

Supercritical carbon dioxide extraction system. The basic configuration and flow diagram of the SFE system are shown in Fig. 6. The system is configured with a liquefied carbon dioxide feed pump (2), an entrainer feed pump (5), a high-pressure vessel (8), a thermostatic bath (10), an optional detector for monitoring the extraction process, and a back-pressure regulator valve for controlling ...

The Extraction of Heavy Oil from Trinidad Tar Sands Using ...

Keywords: Tar Sands, Supercritical Fluid Extraction, Carbon Dioxide, Entrainers, Environmentally Friendly Process . 1. Introduction . Tar sands are being increasingly exploited as an alternative hydrocarbon fuel resource, with the bulk of current production being from the deposits in the Athabasca area of Canada. In Trinidad fairly extensive

The Science Behind Supercritical CO2 | Hightech Extracts

The Science Behind Supercritical CO2. ... (entrainers or co-solvents) directly to the matrix or to the CO2, like ethanol or water, able to extract those compounds. CO2 is chemically inert, so isomerization, oxidation or components hydrolysis are avoided.The advantage of this technique is that at the end of the extraction, the solvent can be ...

Supercritical extraction of toxic organics from soils ...

Role of entrainers in supercritical fluid extraction of chlorinated aromatics from soils. Chemosphere 1991, 23 (8-10), 1085-1095. DOI: 10.1016/0045-6535(91)90133-X.

Simulation and Optimization on the Process of Acetic Acid ...

Some azeotropic entrainers in the process of acetic acid dehydration could extract acetic acid from its dilute solution; this text would observe the ability of extraction about these entrainers mentioned in the literatures. By using the EXTRACT module in Aspen Plus, it is found that isopropyl acetate was the most effective extracting agent. The process of acetic acid dehydration via extraction ...

(PDF) Determination of optimum conditions for SC(CO 2 ...

Supercritical carbon dioxide (SC-CO2) extraction of β-carotene from apricot pomace obtained in apricot purée production process was investigated in the presence of an entrainer.

Cannabis Extraction | Extraction Efficiency | Cannabinoid ...

Extraction Efficiency Series: Objective Setting Part One. This groundbreaking webinar takes a deep dive into CO2 extraction of cannabinoids with the primary goal of helping extraction labs and artisans learn how to control the many variables in the process, and improve the desired results, whether that be to isolate individual compounds, increase overall extraction efficiency or maximize ...

Extraction Efficiency Series - Emerald Community ...

This groundbreaking webinar takes a deep dive into CO2 extraction of cannabinoids with the primary goal of helping extraction labs and artisans learn how to control the many variables in the process, and improve the desired results, whether that be to isolate individual compounds, increase overall extraction efficiency or maximize throughput.

BASIL™—BASF's Processes Based on Ionic Liquids | Sigma-Aldrich

Currently, the most important application of Ionic Liquids described is their use as reaction media for chemical processes. A major breakthrough was reached with BASF's introduction of the first application on a commercial scale: the BASIL™-process, which received the …

SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF …

Studies of Annatto pigment extraction have been carried out using supercritical CO2 (Degnan et al., 1991; Chao et al., 1991) and CO2 modified with several entrainers (methanol, chloroform and acetonitrile) (Anderson et al., 1997). It was shown that the entrainers increased the efficiency of extraction. The objective of this work was to carry out

Supercritical fluid extraction - Wikipedia

Supercritical fluid extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent.Extraction is usually from a solid matrix, but can also be from liquids.SFE can be used as a sample preparation step for analytical purposes, or on a larger scale to either strip unwanted material from a product (e.g ...

Extraction of Biofuels and Biofeedstocks from Aqueous ...

aqueous solutions, and may require use of hazardous materials as entrainers to break azeotropes. We consider the design feasibility of using ionic liquids as solvents in liquid-liquid extractions for separating organic compounds from dilute aqueous solutions. As an example, we focus on the extraction of 1-butanol from a dilute aqueous solution.

Enhanced extraction of oleoresin from Piper nigrum by ...

Enhanced extraction of oleoresin from Piper nigrum by supercritical carbon dioxide using ethanol as a co‐solvent and its ... The effect of entrainers such as methanol, ethanol, and acetone was evaluated using theoretical modeling. ... In this work, process intensification of SCF extraction of black pepper lead to one step extraction and ...