Effect of water on the separation of phenol from model oil with choline chloride via forming deep eutectic solvent

Extractive catalytic oxidative desulfurization (ECODS) is the one of the recent methods used in fuel desulfurization which involved the use of catalyst in the oxidative desulfurization of diesel fuel. This study is aimed to test the effectiveness of synthesized choline chloride (ChCl) based deep eutectic solvent (DES) in fuel desulfurization via ECODS method, with the presence of graphene oxide (GO) as catalyst and hydrogen peroxide (H2O2) as oxidant. In this study, 16 DESs based on choline chloride were synthesized using glycerol (GLY), ethylene glycol (EG), tetraethylene glycol (TEG) and polyethylene glycol (PEG). The characterization of the synthesized DES was carried out via Fourier transform infrared spectroscopy (FTIR) analysis, density, and viscosity determination. According to the screening result, ChCl-PEG (1:4) was found to be the most effective DES for desulfurization using ECODS method, with a removal of up to 47.4% of sulfur containing compounds in model oil in just 10 min per cycle after the optimization of the reaction parameters, and up to 95% desulfurization efficiency could be achieved by six cycles of desulfurization. It is found that the addition of GO as catalyst does not increase the desulfurization performance drastically; hence, future studies for the desulfurization performance of DESs made up from ChCl and PEG and its derivatives can be done simply by using extraction desulfurization (EDS) method instead of ECODS method, for cost reduction purpose and easier regulation of DES waste into environment.

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Effect of Water Addition to Choline Chloride–Urea Deep Eutectic Solvent (DES) on the Removal of Post-Etch Resid ues Formed on Copper

IEEE Transactions on Semiconductor Manufacturing ◽

10.1109/tsm.2012.2190998 ◽

2012 ◽

Vol 25 (3) ◽

pp. 516-522 ◽

Cited By ~ 8

Author(s):

Dinesh Padmanabhan Ramalekshmi Thanu ◽

Srini Raghavan ◽

Manish Keswani

Keyword(s):

Choline Chloride ◽

Deep Eutectic Solvent ◽

Water Addition ◽

Effect Of Water

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Silver nanoparticles synthesized by laser ablation confined in urea choline chloride deep-eutectic solvent

Colloids and Interface Science Communications ◽

10.1016/j.colcom.2016.03.004 ◽

2016 ◽

Vol 12 ◽

pp. 1-4 ◽

Cited By ~ 16

Author(s):

David O. Oseguera-Galindo ◽

Roberto Machorro-Mejia ◽

Nina Bogdanchikova ◽

Josue D. Mota-Morales

Keyword(s):

Silver Nanoparticles ◽

Laser Ablation ◽

Choline Chloride ◽

Deep Eutectic Solvent

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A Utilization of Choline Chloride-Based Deep Eutectic Solvent Integrated with Alkaline Earth Metal Hexahydrate in the Pretreatment of Oil Palm Fronds

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.0c05052 ◽

2021 ◽

Vol 60 (5) ◽

pp. 2011-2026

Author(s):

Eng Kein New ◽

Ta Yeong Wu ◽

Khai Shing Voon ◽

Alessandra Procentese ◽

Katrina Pui Yee Shak ◽

...

Keyword(s):

Oil Palm ◽

Alkaline Earth ◽

Choline Chloride ◽

Deep Eutectic Solvent ◽

Earth Metal ◽

Alkaline Earth Metal ◽

Oil Palm Fronds ◽

Palm Fronds

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Comparison of Corn Stover Pretreatments with Lewis Acid Catalyzed Choline Chloride, Glycerol and Choline Chloride-Glycerol Deep Eutectic Solvent

Polymers ◽

10.3390/polym13071170 ◽

2021 ◽

Vol 13 (7) ◽

pp. 1170

Author(s):

Yuan Zhu ◽

Benkun Qi ◽

Xinquan Liang ◽

Jianquan Luo ◽

Yinhua Wan

Keyword(s):

Corn Stover ◽

Lewis Acid ◽

Choline Chloride ◽

Deep Eutectic Solvent ◽

Enzymatic Saccharification ◽

Glycerol Solution ◽

Cellulose Conversion ◽

Biomass Processing ◽

Acid Catalyzed ◽

Highly Correlated

Herein, corn stover (CS) was pretreated by less corrosive lewis acid FeCl3 acidified solutions of neat and aqueous deep eutectic solvent (DES), aqueous ChCl and glycerol at 120 °C for 4 h with single FeCl3 pretreatment as control. It was unexpected that acidified solutions of both ChCl and glycerol were found to be more efficient at removing lignin and xylan, leading to higher enzymatic digestibility of pretreated CS than acidified DES. Comparatively, acidified ChCl solution exhibited better pretreatment performance than acidified glycerol solution. In addition, 20 wt% water in DES dramatically reduced the capability of DES for delignification and xylan removal and subsequent enzymatic cellulose saccharification of pretreated CS. Correlation analysis showed that enzymatic saccharification of pretreated CS was highly correlated to delignification and cellulose crystallinity, but lowly correlated to xylan removal. Recyclability experiments of different acidified pretreatment solutions showed progressive decrease in the pretreatment performance with increasing recycling runs. After four cycles, the smallest decrease in enzymatic cellulose conversion (22.07%) was observed from acidified neat DES pretreatment, while the largest decrease (43.80%) was from acidified ChCl pretreatment. Those findings would provide useful information for biomass processing with ChCl, glycerol and ChCl-glycerol DES.

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Sustainable preparation of cellulose nanofibrils via choline chloride-citric acid deep eutectic solvent pretreatment combined with high-pressure homogenization

Carbohydrate Polymers ◽

10.1016/j.carbpol.2021.118220 ◽

2021 ◽

pp. 118220

Author(s):

Wei Liu ◽

Haishun Du ◽

Kun Liu ◽

Huayu Liu ◽

Hongxiang Xie ◽

...

Keyword(s):

High Pressure ◽

Citric Acid ◽

Choline Chloride ◽

Cellulose Nanofibrils ◽

Deep Eutectic Solvent ◽

High Pressure Homogenization

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Esterification of Lignin Isolated by Deep Eutectic Solvent Using Fatty Acid Chloride, and Its Composite Film with Poly(lactic acid)

Polymers ◽

10.3390/polym13132149 ◽

2021 ◽

Vol 13 (13) ◽

pp. 2149

Author(s):

Chan-Woo Park ◽

Song-Yi Han ◽

Rajkumar Bandi ◽

Ramakrishna Dadigala ◽

Eun-Ah Lee ◽

...

Keyword(s):

Lactic Acid ◽

Fatty Acid ◽

Composite Film ◽

Acid Chloride ◽

Pinus Densiflora ◽

Choline Chloride ◽

Deep Eutectic Solvent ◽

Morphological Characteristics ◽

Poly Lactic Acid ◽

Fatty Acid Chloride

In this study, the effect of lignin esterification with fatty acid chloride on the properties of lignin and lignin/poly(lactic acid) (PLA) composites was investigated. Lignocellulose (Pinus densiflora S. et Z.) was treated using a deep eutectic solvent (DES) with choline chloride (ChCl)/lactic acid (LA). From the DES-soluble fraction, DES-lignin (DL) was isolated by a regeneration process. Lignin esterification was conducted with palmitoyl chloride (PC). As the PC loading increased for DL esterification, the Mw of esterified DL (EDL) was increased, and the glass transition temperature (Tg) was decreased. In DL or EDL/PLA composite films, it was observed that EDL/PLA had cleaner and smoother morphological characteristics than DL/PLA. The addition of DL or EDL in a PLA matrix resulted in a deterioration of tensile properties as compared with neat PLA. The EDL/PLA composite film had a higher tensile strength and elastic modulus than the DL/PLA composite film. DL esterification decreased water absorption with lower water diffusion coefficients. The effect of lignin esterification on improving the compatibility of lignin and PLA was demonstrated. These results are expected to contribute to the development of high-strength lignin composites.

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Toxico-metabolomics study of a deep eutectic solvent comprising choline chloride and urea suggests in vivo toxicity involving oxidative stress and ammonia stress

Green Chemistry ◽

10.1039/d0gc03927f ◽

2021 ◽

Vol 23 (3) ◽

pp. 1300-1311 ◽

Cited By ~ 1

Author(s):

Dasom Jung ◽

Jae Back Jung ◽

Seulgi Kang ◽

Ke Li ◽

Inseon Hwang ◽

...

Keyword(s):

Oxidative Stress ◽

Choline Chloride ◽

Deep Eutectic Solvent ◽

Deep Eutectic Solvents ◽

In Vivo Toxicity ◽

Metabolomics Study ◽

Ammonia Stress

The in vitro and in vivo studies suggest that choline chloride-based deep eutectic solvents may not be considered as pure, safe mixtures even if they consist of safe compounds.

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