Sander, Aleksandra; Petračić, Ana; Vrsaljko, Domagoj; Parlov Vuković, Jelena; Hršak, Patricija; Jelavić, Antonija (2024) Continuous Purification of Biodiesel with Deep Eutectic Solvent in a Laboratory Karr Column. Separations, 11 (3). ISSN 2297-8739
![[img]](http://fulir.irb.hr/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
- article
Available under License Creative Commons Attribution. Download (3MB) |
Abstract
Following the trend of transport decarbonization, biodiesel has become a promising alternative fuel option. Its production includes multiple steps, all of which can be time-consuming and energy intensive. Improving any of these steps could bring considerable environmental and economic benefits. The utilization of deep eutectic solvents (DESs) for glycerol extraction from crude biodiesel has predominantly been explored as a batch process. This work provides insight into continuous column extraction. Different waste cooking oils were used to produce biodiesel via transesterification with methanol, and the selective solvent for purification was DES choline chloride–ethylene glycol (1:2.5, mol.). A laboratory Karr column at different pulsation frequencies and DES to biodiesel mass ratio was used for extraction. Plate material (steel and 3D printed PETG) and geometry influence on the efficiency of extraction were investigated. Contact angle measurement was used to measure the surface free energy of steel and PETG and the spreading ability of biodiesel and DESs on both materials. Extraction efficiency was analyzed by several analytical techniques. Higher efficiency was observed with steel plates of a triangular pitch hole arrangement. Increasing the mixing intensity and DES to biodiesel mass ratio further increased the efficiency of extraction.
| Item Type: | Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Uncontrolled Keywords: | biodiesel; continuous extraction; deep eutectic solvent; Karr column | ||||||||
| Subjects: | TECHNICAL SCIENCES > Chemical Engineering | ||||||||
| Divisions: | NMR Center | ||||||||
| Projects: |
|
||||||||
| Depositing User: | Ivana Vuglec | ||||||||
| Date Deposited: | 20 Oct 2025 12:04 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/10035 | ||||||||
| DOI: | 10.3390/separations11030071 |
Actions (login required)
 |
View Item |
Altmetric
Altmetric
