scholarly journals Biodiesel production from ethanolysis of DPO using deep eutectic solvent (DES) based choline chloride – ethylene glycol as co-solvent

2017 ◽  
Author(s):  
Taslim ◽  
Leonardo Indra ◽  
Renita Manurung ◽  
Agus Winarta ◽  
Debbie Aditia Ramadhani
Keyword(s):  
Ethylene Glycol ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Biodiesel Production

scholarly journals Deep Eutectic Solvents Based Choline Chloride for Enzymatic Biodiesel Production from Degumming Palm Oil

2020 ◽  
Vol 32 (4) ◽  
pp. 733-738 ◽  
Author(s):  
R. Manurung ◽  
Taslim ◽  
A.G.A. Siregar
Keyword(s):  
Palm Oil ◽  
Raw Materials ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Biodiesel Production ◽  
Chloride Salt ◽  
Enzymatic Reactions ◽  
Potential Applications ◽  
Palm Oil Biodiesel

Deep eutectic solvents (DESs) have numerous potential applications as cosolvents. In this study, use of DES as organic solvents for enzymatic biodiesel production from degumming palm oil (DPO) was investigated. Deep eutectic solvent was synthesized using choline chloride salt (ChCl) compounds with glycerol and 1,2-propanediol. Deep eutectic solvent was characterized by viscosity, density, pH and freezing values, which were tested for effectiveness by enzymatic reactions for the production of palm biodiesel with raw materials DPO. Deep eutectic solvent of ChCl and glycerol produced the highest biodiesel yield (98.98%); weight of DES was only 0.5 % of that of the oil. In addition, the use of DES maintained the activity and stability of novozym enzymes, which was assessed as the yield until the 6th usage, which was 95.07 % biodiesel yield compared with the yield without using DES. Hence, using DES, glycerol in enzymatic biodiesel production had high potentiality as an organic solvent for palm oil biodiesel production

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.

Electrochemical fabrication of cobalt films in a choline chloride–ethylene glycol deep eutectic solvent containing water

2019 ◽  
Vol 74 (2) ◽  
pp. 699-709 ◽  
Author(s):  
Azhar Y. M. Al-Murshedi ◽  
Ahmed Al-Yasari ◽  
Hasan F. Alesary ◽  
Hani K. Ismail
Keyword(s):  
Ethylene Glycol ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Cobalt Films ◽  
Electrochemical Fabrication

scholarly journals From Coffee to Biodiesel—Deep Eutectic Solvents for Feedstock and Biodiesel Purification

Separations ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 22 ◽  
Author(s):  
Aleksandra Sander ◽  
Ana Petračić ◽  
Jelena Parlov Vuković ◽  
Lana Husinec
Keyword(s):  
Potassium Carbonate ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Acid Number ◽  
Biodiesel Production ◽  
Small Scale ◽  
Total Acid ◽  
High Quality ◽  
Purification Method ◽  
Coffee Grounds

Over three billion cups of coffee are consumed daily, making waste coffee grounds readily available throughout the world. Containing approximately 10–15 wt% of oil, they have great potential for biodiesel production. The goal of this work was to produce high quality biodiesel from waste coffee grounds. One fresh and four different types of waste coffee grounds were collected. Oil was extracted by the Soxhlet method with n-hexane and then purified via extractive deacidification with a potassium carbonate-based deep eutectic solvent. Biodiesels were synthesized by means of alkali catalyzed transesterification at different catalyst:methanol:oil mass ratios and reaction times. Impurities present in crude biodiesels were extracted with a choline chloride-based deep eutectic solvent. All batch extraction experiments were performed at room conditions in a small scale extractor. Optimal conditions for synthesis and purification were defined in order to assure high quality of the produced biodiesel. Additionally, continuous column extraction with the choline chloride-based solvent was tested as a purification method for crude biodiesel. Stabilization time and optimal biodiesel to solvent mass ratio were determined. The potassium carbonate-based solvent efficiently reduced the total acid number of the feedstock (deacidification efficiency ranged from 86.18 to 94.15%), while the one based on choline chloride removed free glycerol and glycerides from crude biodiesels. After continuous purification, the purified biodiesel was of excellent quality with glycerol and glyceride contents below the EN 14214 limit.

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