Integrated membrane process for pretreating and desolventizing hexane-soybean oil miscella – A pilot plant study

The study aimed to develop a membrane desolventizing technology for solvent recovery in vegetable oil extraction. Pretreatment of crude miscella is a prerequisite for an organic solvent nanofiltration (OSN) based desolventizing process. Solvent-resistant ultrafiltration (SRUF) membrane employed in m...

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Published in:Journal of membrane science 2024-06, Vol.704, p.122808, Article 122808
Main Authors: Subramanian, R., Muthuganesan, N., Venu, S., Gopika, S.K., Thummar, Utpal G., Chakkaravarthi, A., Singh, Puyam S., Singh, Satyendra
Format: Article
Language:English
Subjects:
hexane
Micelle-enhanced ultrafiltration
nanofiltration
Organic solvent nanofiltration
phospholipids
Pilot scale study
Solvent recovery
solvents
soybean oil
Spiral-wound membrane modules
streams
ultrafiltration
vegetable oil
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cited_by cdi_FETCH-LOGICAL-c339t-2652d6c6078bb3ae94384151fe258c8832a3cdb39bdc8e3fdb1c3765b2394abf3
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container_start_page 122808
container_title Journal of membrane science
container_volume 704
creator Subramanian, R.
Muthuganesan, N.
Venu, S.
Gopika, S.K.
Thummar, Utpal G.
Chakkaravarthi, A.
Singh, Puyam S.
Singh, Satyendra
description The study aimed to develop a membrane desolventizing technology for solvent recovery in vegetable oil extraction. Pretreatment of crude miscella is a prerequisite for an organic solvent nanofiltration (OSN) based desolventizing process. Solvent-resistant ultrafiltration (SRUF) membrane employed in micelle-enhanced ultrafiltration (MEUF) of hexane-crude soybean oil miscella displayed high phospholipids (PL) rejection (98.5 %) and productivity (∼28 L/m2/h), accompanied with a moderate oil rejection (∼22 %). The PL-rich retentate fraction was alkali-treated to recover the oil in the stream (8.8 %). This complementary pretreatment approach met the quality requirements and maximized the yield of treated oil (>98 %) while reducing the chemicals in the process. A subsequent two-stage desolventizing of MEUF-treated miscella with solvent-resistant nanofiltration (SRNF) membrane reduced the oil-in-permeate to 1.37 %, achieving the set recycling criteria (
doi_str_mv 10.1016/j.memsci.2024.122808
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The results obtained from the pilot scale study (batch size 40 kg of crude miscella) revealed that the MEUF met the pretreatment requirements, and the subsequent OSN process recovered ∼63 % of hexane through a non-thermal route for recycling in the extraction process. The pilot-scale evaluation demonstrated the technical feasibility of the proposed membrane desolventizing process employing indigenous spiral-wound SRUF and SRNF membrane modules. 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source ScienceDirect Journals
subjects hexane
Micelle-enhanced ultrafiltration
nanofiltration
Organic solvent nanofiltration
phospholipids
Pilot scale study
Solvent recovery
solvents
soybean oil
Spiral-wound membrane modules
streams
ultrafiltration
vegetable oil
title Integrated membrane process for pretreating and desolventizing hexane-soybean oil miscella – A pilot plant study
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