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article

Separation and recovery of vanadium from leached solution of spent residuehydrodesulfurization (RHDS) catalyst using solvent extraction

Hong-In Kim, Ki-Woong Lee, Debaraj Mishra, Kang-Myong Yi, more

Journal of Industrial and Engineering Chemistry > 2014 > 20 > 6 > 4457-4462

Leached solution, generated by oxalic acid washing of spent residue hydrodesulfurization (RHDS) catalyst, was used for separation and recovery of vanadium. First of all, solvent extraction, using mixture of 20% (v/v) Alamine-336 and 5% (v/v) tri-butyl phosphate (TBP) as a phase modifier, was conducted to extract molybdenum completely at pH 0.50. Then molybdenum-free solution was used for vanadium...

article

Solvent extraction studies of uranium(VI) from phosphoric acid: Role of synergistic reagents in mixture with bis(2-ethylhexyl) phosphoric acid

Denis Beltrami, Alexandre Chagnes, Mansour Haddad, Hugo Laureano, more

Hydrometallurgy > 2014 > 144-145 > Complete > 207-214

The extraction of uranium(VI) from 5.3mol·L ⁻¹ H ₃ PO ₄ (a typical concentration of wet phosphoric acid) with a series of neutral organosphosphorus synergistic reagents (0.125–0.250mol·L ⁻¹ ) used in mixture with 0.5mol·L ⁻¹ bis(2-ethylhexyl) phosphoric acid (D2EHPA) in Isane IP 185 (a 100% isoparaffinic aliphatic diluent) has been investigated. The series of...

article

Evaluation of green solvent as an environment friendly alternative for milk fat extraction from ghee residue (clarified butter sediment waste)

Aakash Dadarao Wani, Writdhama Prasad, Kaushik Khamrui, Shaik Abdul Hussain, more

International Journal of Food Science & Technology > 58 > 4 > 2085 - 2091

Ghee residue (clarified butter sediment waste) is a fat‐rich by‐product (containing 50–70% fat, weight basis) obtained during ghee (clarified butter fat) preparation. Conventionally used fat extraction methods from ghee residue (GR) are energy intensive and generates huge amount of waste water. In the present study, solvent extraction was explored for milk fat separation from GR at different extraction...

article

Recovery of lithium from salt‐lake brine by liquid–liquid extraction using TBP‐FeCl₃ based mixture solvent

Linju Qiao, Hang Chen, Jianguo Yu

The Canadian Journal of Chemical Engineering > 101 > 4 > 2139 - 2147

In this study, a complete cyclic process was developed for the lithium extraction from high‐concentration salt‐lake brine by using a high flash point, low water solubility, and low toxicity diluent mixed with the TBP‐FeCl₃‐based organic solvent. The process was composed of four sections, including extraction, scrubbing, stripping, and regeneration. The optimal conditions for each section were determined...

article

Hydrodynamics Study on Annular Centrifugal Contactors: CINC V 02 as an Example

Zaid Al-khier Hamamah, Thomas Grützner

Chemical Engineering & Technology > 46 > 3 > 567 - 578

Although annular centrifugal extractors (ACCs) have been increasingly applied in the process industry recently, their complex fluid dynamics is still not fully explained in the literature. This could be one of the major reasons why their current industrial implementation is not up to their potential. This work aims to enhance the understanding of ACC hydrodynamics by focusing on liquid holdup and...

article

Cucumis melo seed oil: agro‐food by‐product with natural anti‐hyperlipidemic potential

Afshan Shafi, Umar Farooq, Kashif Akram, Hamid Majeed, more

Journal of the Science of Food and Agriculture > 103 > 4 > 1644 - 1650

BACKGROUND Sweet melon (Cucumis melo) seed is generally considered as agro‐waste, however, the current study aimed to use this waste as a valuable oil source. The seed oil extracted by two different extraction techniques (cold press and solvent extraction) was investigated for its anti‐hyperlipidemic potential. Hyperlipidemic rabbits were fed on the diet supplemented with sweet melon seed oil for...

article

Diclofenac Sodium Solvent Extraction Based on Two‐Phase Flow Patterns

Mahvash Ansarimehr, Ahmad Rahbar-Kelishami, Hadi Shayesteh

Chemical Engineering & Technology > 46 > 2 > 326 - 333

Diclofenac (DF) solvent extraction using tetra‐n‐butyl ammonium bromide (TBAB) in Y‐type microfluidic junctions with liquid‐liquid two‐phase flow patterns was investigated. The hydrodynamics of parallel, slug, and droplet flows were examined. The results indicated that the extraction efficiency decreased with increasing velocity. At Q_O/Q_A greater than 2.5, the flow pattern was converted from slug...

article

Integration of soil washing and cork permeable reactive barriers for the remediation of soil contaminated with polycyclic aromatic hydrocarbons

Karyn NO Silva, João MM Henrique, Maja B Đolić, Carlos A Martínez‐Huitle, more

Journal of Chemical Technology & Biotechnology > 97 > 12 > 3430 - 3440

BACKGROUND Soil washing is a well‐known technology for the remediation of soils polluted by organic contaminants, including polycyclic aromatic hydrocarbons (PAHs). This study aimed to go further by integrating soil washing and permeable reactive barriers (PRBs) made of cork granules to remove PAHs from the soil. While PAHs may be transferred from the soil to the washing solution in the soil washing...

article

Application of reactive extraction for the separation of pseudomonic acids: Influencing factors, interfacial mechanism, and process modelling

Roxana Georgiana Lazar, Alexandra Cristina Blaga, Elena Niculina Dragoi, Anca Irina Galaction, more

The Canadian Journal of Chemical Engineering > 100 > S1 > S246 - S257

Mupirocin (a mixture of A, B, C, and D pseudomonic acids—four complex, similar structures) is an antibiotic belonging to the monocarboxylic acid class, used to cure infections caused by bacteria (Gram‐positive), especially methicillin‐resistant Staphylococcus aureus (MRSA). Its biotechnological production and separation need constant attention, as improving antibiotics is important in the pharmaceutical...

article

Tetra‐Substituted p‐Tert‐Butylcalix[4]Arene with Phosphoryl and Salicylamide Functional Groups: Synthesis, Complexation and Selective Extraction of f‐Element Cations

Florian Glasneck, Quirina I. Roode‐Gutzmer, Thorsten Stumpf, Berthold Kersting

Chemistry – A European Journal > 28 > 11 > n/a - n/a

A new series of lanthanide (1–5) and uranyl (6) complexes with a tetra‐substituted bifunctional calixarene ligand H₂L is described. The coordination environment for the Ln³⁺ and UO₂²⁺ ions is provided by phosphoryl and salicylamide functional groups appended to the lower rim of the p‐tert‐butylcalix[4]arene scaffold. Ligand interactions with lanthanide cations (light: La³⁺, Pr³⁺; intermediate: Eu³⁺...

article

Biological Activity of Solvent Extracts of Angelica archangelica Leaf and Stem

Anindita De, Ruchi Singh, Yogita Singh, Preeti Jain, more

Macromolecular Symposia > 401 > 1 > n/a - n/a

In the current study, extraction from the stem and leaf of the well‐known Indian medicinal plant Angelica archangelica (A. Angelica) with the solvents of variable polarity such as water, methanol, ethyl acetate, and chloroform is reported. The presence of different secondary metabolites like terpenoid, flavonoid, glycosides, carbohydrates, resin, steroid, proteins, and tannin are confirmed by different...

article

Optimization of cerium extraction from aqueous solutions by response surface methodology employing 4‐factor Box‐Behnken design

E. Allahkarami, B. Rezai

Materialwissenschaft und Werkstofftechnik > 53 > 1 > 39 - 46

In this research, the solvent extraction of Cerium (III) using Cyanex 572 has been investigated under variations of the pH, extractant concentration, nitrate ion concentration, and contact time. Box‐Behnken design and analysis of variance were applied to determine the main effects and their interactions. The high R² value obtained from the developed model indicated a good correlation between the predicted...

article

Badanie procesu ekstrakcji wysokoaromatycznych surowców naftowych z zastosowaniem współrozpuszczalnika

Artur Antosz, Stefan Ptak

Nafta-Gaz > 2021 > R. 77, nr 10 > 692--703

Obecnie jedną z najpopularniejszych metod wytwarzania plastyfikatora TDAE do kauczuków i gumy jest metoda bazująca na procesie rafinacji ekstraktów naftowych furfurolem. Proces ten zapewnia obniżenie w ekstraktach zawartości rakotwórczych wielopierścieniowych węglowodorów aromatycznych (WWA) do wymaganego poziomu. Technologia produkcji plastyfikatora sprawiała liczne problemy w warunkach przemysłowych...

article

Recovery of pure palladium compound from the spent electroplating solutions by hydrometallurgical method

Viet Nhan Hoa Nguyen, Si Jeong Song, Man Seung Lee

Physicochemical Problems of Mineral Processing > 2022 > Vol. 58, iss. 1 > 88--100

Electroplating of palladium (Pd) is practiced in the manufacture of electronic materials. The increasing demand for Pd metal necessitates the recovery of Pd(II) from the spent electroplating solutions. In this work, the recovery of Pd compound was studied from the cemented Pd by zinc (Zn) metal from spent electroplating solutions. Initially, the selective extraction ability of ionic liquids synthesized...

article

Energy‐Efficient Biobutanol Recovery Process Using 1‐Heptanol Extraction

Hyeon Woo Oh, Seong Chan Lee, Hee Chul Woo, Young Han Kim

Chemical Engineering & Technology > 44 > 12 > 2316 - 2326

Biobutanol is an attractive fuel, owing to its abundant lignocellulose utilization and the similarity of its physical properties to those of gasoline. Biobutanol recovery from its fermentation broth is crucial for large‐scale production because of the high costs involved. Extraction considerably reduces the energy demand for distillation, which is extensively used for its recovery. A new solvent,...

article

Recovery of Al, Co, Cu, Fe, Mn, and Ni from spent LIBs after Li selective separation by COOL‐Process – Part 2: Solvent Extraction from Sulphate Leaching Solution

Sandra Pavón, Doreen Kaiser, Martin Bertau

Chemie Ingenieur Technik > 93 > 11 > 1840 - 1850

The market for lithium‐ion batteries (LIB) is experiencing substantial growth, what is owed to electromobility and the growing demand for cordless devices. Securing the raw material base for LIB is mandatory to achieve the objectives of EU commission's Green Deal. This implies not only sufficient access to lithium but also the accompanying metals, above all Co, Ni, Mn. After preceding recovery of...

article

Verfahrenstechnik an der JKU Linz

Mark W. Hlawitschka

Chemie Ingenieur Technik > 93 > 10 > 1487 - 1492

Die Universität Linz ist eine im Vergleich recht junge Universität. Sie wurde im Jahre 1962 als Hochschule für Sozial‐ und Wirtschaftswissenschaften eröffnet und 1966 durch die technisch‐naturwissenschaftliche Fakultät erweitert. Die Johannes Kepler Universität (JKU) Linz hat mit mittlerweile über 19 400 Studierenden eine beachtliche Größe erreicht. Die Verfahrenstechnik wurde 1997 an der JKU etabliert...

article

Discrimination of Kyoho grape (Vitis labruscana) skin, seed and flesh antioxidant activities by solvent extraction: application of advanced chemometrics

Kandi Sridhar, Albert Linton Charles

International Journal of Food Science & Technology > 56 > 9 > 4434 - 4443

Grape skin, seed and flesh, a potential source of bioactive compounds, were investigated to discriminate Kyoho skin, seed and flesh antioxidant activities by solvent extraction using chemometrics, including multivariate, discriminant analysis (DA) and hierarchical cluster analysis (HCA). Multivariate analysis (Wilk's Λ = 0.02 × 10^‐4, P < 0.01) explained the discrimination behaviour of phenolics...

article

Isothermal kinetics of ethanolic extraction of total hypericin from pre‐extracted Hypericum perforatum flowers

Borivoj Adnadjevic, Biljana Koturevic, Jelena Jovanovic

Phytochemical Analysis > 32 > 5 > 757 - 766

Introduction Hypericum perforatum L., Hypericaceae (St John's wort) is a highly familiar plant in the medicinal community which recently showed good antiviral activities including against some types of coronavirus. Objective Establishing the kinetics of isothermal extraction of total hypericin (TH) from the pre‐extracted flowers of H. perforatum flowers. Methods The solvent extraction of TH from...

article

Spectroscopic, thermodynamic and ultrasonic properties of pseudo‐binary mixtures of organic extractants and vegetable oil at 25–60°C under atmospheric pressure

Soumi Sarkar, Supriyo Kumar Mondal, Manoj Kumar Beriya, Prabirkumar Saha

Asia‐Pacific Journal of Chemical Engineering > 16 > 4 > n/a - n/a

This work is intended to investigate the molecular interactions and transport properties of five pseudo‐binary mixtures of various combinations of vegetable oils (sesame oil and sunflower oil) and organic extractants (Aliquat 336, TBP, D2EHPA and TOA) by determining their surface tension, density and viscosity over a temperature range of 25–60°C at atmospheric pressure. The experimental data are fitted...

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Search results

Separation and recovery of vanadium from leached solution of spent residuehydrodesulfurization (RHDS) catalyst using solvent extraction

Solvent extraction studies of uranium(VI) from phosphoric acid: Role of synergistic reagents in mixture with bis(2-ethylhexyl) phosphoric acid

Evaluation of green solvent as an environment friendly alternative for milk fat extraction from ghee residue (clarified butter sediment waste)

Recovery of lithium from salt‐lake brine by liquid–liquid extraction using TBP‐FeCl₃ based mixture solvent

Hydrodynamics Study on Annular Centrifugal Contactors: CINC V 02 as an Example

Cucumis melo seed oil: agro‐food by‐product with natural anti‐hyperlipidemic potential

Diclofenac Sodium Solvent Extraction Based on Two‐Phase Flow Patterns

Integration of soil washing and cork permeable reactive barriers for the remediation of soil contaminated with polycyclic aromatic hydrocarbons

Application of reactive extraction for the separation of pseudomonic acids: Influencing factors, interfacial mechanism, and process modelling

Tetra‐Substituted p‐Tert‐Butylcalix[4]Arene with Phosphoryl and Salicylamide Functional Groups: Synthesis, Complexation and Selective Extraction of f‐Element Cations

Biological Activity of Solvent Extracts of Angelica archangelica Leaf and Stem

Optimization of cerium extraction from aqueous solutions by response surface methodology employing 4‐factor Box‐Behnken design

Badanie procesu ekstrakcji wysokoaromatycznych surowców naftowych z zastosowaniem współrozpuszczalnika

Recovery of pure palladium compound from the spent electroplating solutions by hydrometallurgical method

Energy‐Efficient Biobutanol Recovery Process Using 1‐Heptanol Extraction

Recovery of Al, Co, Cu, Fe, Mn, and Ni from spent LIBs after Li selective separation by COOL‐Process – Part 2: Solvent Extraction from Sulphate Leaching Solution

Verfahrenstechnik an der JKU Linz

Discrimination of Kyoho grape (Vitis labruscana) skin, seed and flesh antioxidant activities by solvent extraction: application of advanced chemometrics

Isothermal kinetics of ethanolic extraction of total hypericin from pre‐extracted Hypericum perforatum flowers

Spectroscopic, thermodynamic and ultrasonic properties of pseudo‐binary mixtures of organic extractants and vegetable oil at 25–60°C under atmospheric pressure

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