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

ABSTRACT: The oil in the spent bleaching earth (SBE) matrix was successfully removed by applying the supercritical carbon dioxide (SCCO₂) extraction technique in a semi-continuous flow-type system. The SCCO₂ 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 SCCO₂ extraction treatment exhibiting the substances including oil in the SBE matrix were successfully removed. The extracted oil yield was around 95% when the SCCO₂ 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 SCCO₂ extraction system is a viable way to extract oil from the SBE matrix.

SUBMITTER: Machmudah S

PROVIDER: S-EPMC9576808 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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

Machmudah Siti S Maulana Nabil Apta NA Norman Andhika Shafian Maindo ASM Nyoto Valencia Marchilia VM Amrullah Irji I Wahyudiono Winardi Sugeng S Wenten I Gede IG Goto Motonobu M

Heliyon 20221005 10

The oil in the spent bleaching earth (SBE) matrix was successfully removed by applying the supercritical carbon dioxide (SCCO2) extraction technique in a semi-continuous flow-type system. The SCCO2 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 SCCO2 extraction treatment exhibiting the substances including oil in the SBE matrix were successfull ...[more]

PMID: 36267373

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Dataset Information

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

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

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