Physicochemical characterization of recovered palm oil from palm oil mill effluent by progressive freezing

Physicochemical characterization of recovered palm oil from palm oil mill effluent by progressive freezing

AMRAN Nurul Aini, MOHAMED ANUAR Muhammad Athir, RUSLAN Muhammad Syafiq

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Abstract. Oil extraction rate (OER) is essential in measuring palm oil mills’ performance and competence. One of the attempts to achieving high OER is exploring the possibility of recovering residual oil from palm oil mill effluent (POME). A recent technique called progressive freezing (PF) has been proposed to reclaim the residual oil from POME, forming a block of solid oil in the system. This article focuses on evaluating the quality of the recovered oil through its physicochemical characterization (free fatty acid (FFA), deterioration of bleachability (DOBI), moisture content and dirt analysis) before deciding on the subsequent usage or suitable treatment if needed. The results show that the residual oil contained 25 to 27% free fatty acid (FFA), 1.01 to 2.02% moisture content, 0.049 to 0.055 dirt and had deterioration of bleachability (DOBI) between 2.3 to 2.7. The recovered oil had been proposed to be suitable for recycle or utilization as a value-added product such as biodiesel production.

Progressive Freezing, Recovered Palm Oil, Palm Oil Mill Effluent, Free Fatty Acid, DOBI

Published online 5/20/2023, 7 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: AMRAN Nurul Aini, MOHAMED ANUAR Muhammad Athir, RUSLAN Muhammad Syafiq, Physicochemical characterization of recovered palm oil from palm oil mill effluent by progressive freezing, Materials Research Proceedings, Vol. 29, pp 355-361, 2023


The article was published as article 40 of the book Sustainable Processes and Clean Energy Transition

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