Exploration of Using Deep Eutectic Solvents to Separate Methyl Palmitate from Simulated Biodiesel Mixtures

2015 ◽  
Vol 1101 ◽  
pp. 249-251 ◽  
Author(s):  
Bao Kun Tang ◽  
Yu Jin Lee ◽  
Kyung Ho Row
Keyword(s):  
Ethylene Glycol ◽  
High Purity ◽  
Methyl Palmitate ◽  
Low Cost ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Purification Process ◽  
Ratio Increase ◽  
Biodiesel Purification

Biodiesel purification from the crude biodiesel product has attracted much attention in recent years, and one low cost and simple purification process is urgent to explore. The separation of methyl palmitate from the crude biodiesel products is a key point. In this work, a series of choline chloride based deep eutectic solvents (DESs) is explored as a solvent for separation of methyl palmitate from the simulated biodiesel product. The work showed that the choline chloride-ethylene glycol DES had a excellent effect on the separation of methyl palmitate, and high purity of methyl palmitate were obtained with the choline chloride to ethlene glycol ratio decrease or with the choline chloride-ethylene glycol DES to biodiesel ratio increase.

Deep eutectic solvents (DESs) as low-cost and green electrolytes for electrochromic devices

2017 ◽  
Vol 19 (7) ◽  
pp. 1653-1658 ◽  
Author(s):  
Hugo Cruz ◽  
Noémi Jordão ◽  
Luís C. Branco
Keyword(s):  
Ethylene Glycol ◽  
Lithium Chloride ◽  
Low Cost ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Electrochromic Devices

The application of deep eutectic solvents based on choline chloride or lithium chloride with ethylene glycol and glycerol as low-cost, recyclable and green electrolytes for electrochromic devices is reported.

Formation of Double-Cone-Shaped ZnO Mesocrystals by Addition of Ethylene Glycol to ZnO Dissolved Choline Chloride–Urea Deep Eutectic Solvents and Observation of Their Manners of Growth

CrystEngComm ◽  
2021 ◽  
Author(s):  
Hajime Wagata ◽  
Ginji Harada ◽  
Eriko Nakashima ◽  
Motoki Asaga ◽  
Tomoaki Watanabe ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Double Cone ◽  
Crystal Shapes ◽  
Physical And Chemical

ZnO mesocrystals have been explored for various physical and chemical applications. In spite of effort by a number of researches, it is still difficult to grow specific crystal shapes in...

Biodiesel purification in microextractors: Choline chloride based deep eutectic solvents vs water

2020 ◽  
Vol 242 ◽  
pp. 116783 ◽  
Author(s):  
Anita Šalić ◽  
Ana Jurinjak Tušek ◽  
Martin Gojun ◽  
Bruno Zelić
Keyword(s):  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Biodiesel Purification

scholarly journals Theoretical and Economic Evaluation of Low-Cost Deep Eutectic Solvents for Effective Biogas Upgrading to Bio-Methane

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3379
Author(s):  
Edyta Słupek ◽  
Patrycja Makoś ◽  
Jacek Gębicki
Keyword(s):  
Economic Evaluation ◽  
Excess Enthalpy ◽  
Low Cost ◽  
Choline Chloride ◽  
Unit Cost ◽  
Deep Eutectic Solvents ◽  
Molar Ratio ◽  
Biogas Upgrading ◽  
Screening Model ◽  
Effective Removal

This paper presents the theoretical screening of 23 low-cost deep eutectic solvents (DESs) as absorbents for effective removal of the main impurities from biogas streams using a conductor-like screening model for real solvents (COSMO-RS). Based on thermodynamic parameters, i.e., the activity coefficient, excess enthalpy, and Henry’s constant, two DESs composed of choline chloride: urea in a 1:2 molar ratio (ChCl:U 1:2), and choline chloride: oxalic acid in a 1:2 molar ratio (ChCl:OA 1:2) were selected as the most effective absorbents. The σ-profile and σ-potential were used in order to explain the mechanism of the absorptive removal of CO2, H2S, and siloxanes from a biogas stream. In addition, an economic analysis was prepared to demonstrate the competitiveness of new DESs in the sorbents market. The unit cost of 1 m3 of pure bio-methane was estimated to be in the range of 0.35–0.37 EUR, which is comparable to currently used technologies.

scholarly journals Cross-dehydrogenative coupling reaction using copper oxide impregnated on magnetite in deep eutectic solvents

2016 ◽  
Vol 18 (3) ◽  
pp. 826-833 ◽  
Author(s):  
Xavier Marset ◽  
Juana M. Pérez ◽  
Diego J. Ramón
Keyword(s):  
Ethylene Glycol ◽  
Copper Oxide ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Coupling Reaction ◽  
Deep Eutectic Solvents ◽  
Dehydrogenative Coupling

The synthesis of different tetrahydroisoquinolines using choline chloride : ethylene glycol as a deep eutectic solvent (DES) and copper(ii) oxide impregnated on magnetite as a catalyst has been accomplished successfully.

Unassisted visible solar water splitting with efficient photoelectrodes sensitized by quantum dots synthesized via an environmentally friendly eutectic solvent-mediated approach

2018 ◽  
Vol 6 (45) ◽  
pp. 22566-22579 ◽  
Author(s):  
Uma V. Ghorpade ◽  
Mahesh P. Suryawanshi ◽  
Seung Wook Shin ◽  
Jihun Kim ◽  
Soon Hyung Kang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ethylene Glycol ◽  
Water Splitting ◽  
Choline Chloride ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Colloidal Quantum Dots ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Synthetic Media

Deep eutectic solvents (DESs) based on choline chloride/ethylene glycol have been explored as synthetic media for Cu–Sb–S based colloidal quantum dots for unassisted solar water splitting.

scholarly journals Adsorption phenomena at the interface between mercury and solutions containing choline chloride, ethylene glycol and water

2021 ◽  
pp. 50-58
Author(s):  
F.I. Danilov ◽  
◽  
Y.D. Rublova ◽  
V.S. Protsenko ◽  
◽  
...  
Keyword(s):  
Free Energy ◽  
Ethylene Glycol ◽  
Choline Chloride ◽  
Specific Interaction ◽  
Mercury Electrode ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Charged Surface ◽  
Free Energies ◽  
Adsorption Phenomena

Adsorption of the components of deep eutectic solvent ethaline (ethylene glycol and choline chloride) on mercury electrode is investigated by electrocapillary measurements. It is determined that choline cations are mainly adsorbed on the negatively charged surface of mercury, while chloride anions are mainly adsorbed on the positively charged surface. The corresponding values of free energies of adsorption and interactions of adsorbate and solvent with metal are calculated and analyzed. An anomalous increase in both the apparent value of the adsorption at limiting coverage and the free energy of the interaction of the choline cation with mercury is observed in the transition from aqueous to ethylene glycol solutions, which is explained by the formation of complexes in a surface layer that exist in deep eutectic solvents and are capable of adsorbing on the electrode surface. The free energy of interaction with the mercury surface is higher than the energy of squeezing out from the volume of the solution onto its surface, which indicates the specific interaction of the adsorbate with mercury. A marked decrease in interfacial tension on both branches of the electrocapillary curve is observed when water is added to ethaline.

scholarly journals The Effect of Deep Eutectic Solvents as Co-solvent on Organophosphorus Hydrolase Targeting Engineering Enzyme-catalyzed

2020 ◽  
Vol 10 (5) ◽  
pp. 6488-6497
Keyword(s):  
Organic Solvents ◽  
Low Cost ◽  
Choline Chloride ◽  
Molar Fraction ◽  
Enzyme Reaction ◽  
Deep Eutectic Solvents ◽  
Biochemical Properties ◽  
Organophosphorus Hydrolase ◽  
The Stability ◽  
The Individual

Deep eutectic solvents (DESs) are systems formed from one or more compounds in a mixture form, to give a eutectic with a melting point much lower than either of the individual components. DESs have attracted considerable attention as green alternative solvents to conventional solvents because they are not only eco-friendly, non-toxic, and biodegradable organic compounds, but also low cost and easy to produce.and share several features and properties. DESs not only have particular properties in comparison with traditional organic solvents, but also their combination with organic solvents may also show improved and desired properties. In this study, DESs were used as the solvent in buffer containing organophosphorus hydrolase enzyme, in order to optimize the enzyme reaction buffer. Different DESs such as reline (choline chloride 2:1 urea), ethaline (choline chloride 2:1 ethanol) and glyceline (choline chloride 2:1 glycerol) were selected as an adjuvant for OPH enzyme reaction buffer. Biochemical properties, thermal stability and half-life of the OPH enzyme were studied, accordingly. In the reline, a reduction in the activity of the enzyme and in ethaline and glyceline, an increase in the activity and the stability were observed when compared with the buffer. The highest activity and stability in ethaline and glyceline in molar fraction was 0.025 and 0.25, respectively.

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