Oil removal from spent bleaching earth of vegetable oil refinery plant using supercritical carbon dioxide.

Autor: Machmudah S; Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya 60111, Indonesia., Maulana NA; Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya 60111, Indonesia., Norman ASM; Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya 60111, Indonesia., Nyoto VM; School of Chemical Engineering and Technology, Tianjin University, Beiyang Ave, Nankai District, Tianjin 300072, China., Amrullah I; Department of Biotechnology, IPB University, Jl Raya Dramaga, Bogor 16680, Indonesia., Wahyudiono; New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan., Winardi S; Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya 60111, Indonesia., Wenten IG; Department of Chemical Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia., Goto M; Super Critical Technology Centre Co. Ltd., Kuwana, Mie 511-0838, Japan.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2022 Oct 05; Vol. 8 (10), pp. e10826. Date of Electronic Publication: 2022 Oct 05 (Print Publication: 2022).
DOI: 10.1016/j.heliyon.2022.e10826
Abstrakt: The oil in the spent bleaching earth (SBE) matrix was successfully removed by applying the supercritical carbon dioxide (SCCO 2 ) extraction technique in a semi-continuous flow-type system. The SCCO 2 extraction process was conducted at 40-80 °C and 20-30 MPa with extraction time of ∼180 min. The color of SBE matrix changes from the dark to dark-pale color after the SCCO 2 extraction treatment exhibiting the substances including oil in the SBE matrix were successfully removed. The extracted oil yield was around 95% when the SCCO 2 extraction process was performed at 40 °C and 30 MPa with 10% ethanol addition as a co-solvent. The GC analysis showed that the prominent fatty acid constituents in the extracted oil are palmitic and oleic acids, furthermore it can be fed as a feedstock to produce biodiesel fuel. Next, it can be proposed that SCCO 2 extraction system is a viable way to extract oil from the SBE matrix.
Competing Interests: The authors declare no conflict of interest.
(© 2022 The Author(s).)
Databáze: MEDLINE
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