Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane

Sehn, Georgia Ane Raquel; Gonçalves, Lireny Aparecida Guaraldo; Ming, Chiu Chih

doi:10.3989/gya.0498151

Cited by 13 publications

(12 citation statements)

References 24 publications

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“…Moreover, the flux drop at the end of the filtration was due to the deposition of a gel on the membrane surface 38,41,42 . The deposited layer is formed because of the phospholipids retained on the membrane surface and pores plugging 14,43 . Fig.…”

Section: Permeate Fluxmentioning

confidence: 99%

Ultrafiltration Membrane for Degumming of Crude Palm Oil-Isopropanol Mixture

Aryanti

Wardhani

Nafiunisa

2018

Chem.Biochem.Eng.Q.

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Ultrafiltration (UF) is a membrane technology that has been applied for crude palm oil (CPO) degumming. It is considered as an alternative for the conventional CPO degumming technology because of its lower energy consumption, no need for the addition of chemicals, and almost no loss of natural oil. In this research, we separated a CPO-isopropanol mixture via laboratory-made flat-sheet polyethersulfone (PES) UF. Flux profiles confirmed that the increase in the CPO concentration resulted in lower fluxes. However, increasing the temperature from 30 °C to 45 °C initially raised the flux, but it was further decreased when the feed temperature was raised from 40 °C to 45 °C. Using UF of the CPO-isopropanol mixture at crude oil concentrations of 30 % and 40 %, we were able to reject more than 99 % phospholipids and nearly 93 % phospholipids, respectively. However, the separation of free fatty acids using this process was ineffective due to the small size of free fatty acids. Through the evaluation of the blocking mechanism in the Hermia model, it was proposed that the standard and intermediate blocking were the dominant mechanisms of filtration of CPO at a concentration of 30 and 40 %, and 50 and 60 %, respectively.

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Section: Permeate Fluxmentioning

confidence: 99%

Ultrafiltration Membrane for Degumming of Crude Palm Oil-Isopropanol Mixture

Aryanti

Wardhani

Nafiunisa

2018

Chem.Biochem.Eng.Q.

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“…The technique of mechanical removal of impurities from oil with bleaching earths can be compared to membrane techniques. Research of Sehn, Gonçalves, Ming [46] have shown a high efficiency (95.5%) of phosphorus removal from oil using polymer membranes. The use of phospholipidase C (PLC) is also effective, resulting in a crude oil with phosphorus content 7.34 ± 0.39 mg/kg [47].…”

Section: Bleaching Earthmentioning

confidence: 99%

Low-Cost Investment with High Quality Performance. Bleaching Earths for Phosphorus Reduction in the Low-Temperature Bleaching Process of Rapeseed Oil

Łaska-Zieja

Golimowski

Marcinkowski

et al. 2020

Foods

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Rapeseed oils are a valuable component of the diet. Mostly, there are refined oils deprived of valuable nutrients in the market, hence in recent times cold-pressed and unrefined oils have been available and popular among consumers. However, the low yield of this oil makes this product expensive. The aim of the study was to analyse the effectiveness of phosphorus reduction in crude oils, cold- and hot-pressed in the low-temperature bleaching process. Eight market-available bleaching earths was compared. The effectiveness of 90% was found with 2% (m/m) of Kerolite with hydrated magnesium silicate. An increase in the share of earths to 4% (m/m) resulted in the effectiveness of phosphorus reduction >90% in seven out of eight analysed cases. Bentonite activated with acid with the lowest MgO content was characterised by low efficiency <64%. The research shows that the effectiveness of phosphorus reduction was significantly affected by the composition of earths applied in the bleaching process at ambient temperature. The results of research confirm the high effectiveness of the process as it is not necessary to heat up the oil before the bleaching process. This method is recommended for existing and new industrial plant for two-stage rapeseed oil pressing.

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“…Degumming of crude vegetable oils using ultrafiltration has been reported in several studies, with authors testing both polymeric (Arora, Manjula, Krishna, & Subramanian, 2006;de Moura, Gonçalves, Petrus, & Viotto, 2005;García et al, 2006;Cecilia Pagliero, Mattea, Ochoa, & Marchese, 2007;Sehn, Gonçalves, & Ming, 2016) and ceramic (Basso, Gonçalves, Grimaldi, & Viotto, 2009;de Souza et al, 2008;Wibisono et al, 2014) membranes for this application. Lin et al (Lin et al, 1997) studied the degumming of 25% cottonseed oil/hexane miscella using two different polymeric membranes with MWCO of 1000 and 15000 Da that achieved phospholipid rejection of 99.4% and 94.6%, respectively.…”

Section: Introductionmentioning

confidence: 98%

Efficient degumming of crude canola oil using ultrafiltration membranes and bio-derived solvents

Abdellah

Scholes

Liu

et al. 2020

Innovative Food Science & Emerging Technologies

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Vegetable oils derived from rapeseed and its genetic variant canola, are conventionally extracted from oilseeds by means of an organic solvent, typically hexane. Concerns regarding the toxicity of hexane have meant safer and more environmentally friendly solvents such as terpenes are becoming attractive. In this research, the degumming of canola oil/terpene mixtures using ultrafiltration is considered as a critical step in such an extraction process. Polysulfone (PSF) and polyethersulfone (PES) membranes were found to be ineffective in this application, as the oil appeared to cause swelling of the membrane structure. This meant that the original flux could not be restored after cleaning. Conversely, a ceramic membrane (MWCO 5 kDa) provided stable behaviour over several cycles of operation when cleaned with pure solvent at high cross velocity at 40 °C. This membrane showed high phospholipid retention (95±2 %), although some oil was also retained (16±3%). Cymene emerged as the most attractive of the three terpenes tested, with higher permeate flux and phospholipid rejection than limonene or pinene. Industrial Relevance: While hexane has been traditionally used for oilseed extraction, toxicity concerns are likely to restrict its industrial use in the future. This article provides information to engineers and food scientists on the use of terpenes as an alternative solvent. In particular, the potential for ultrafiltration to be used in degumming of canola oil/terpene mixture is assessed. Our research shows that polymeric membranes are unlikely to be useful at scale in this application, as they are not readily cleaned for reuse. Conversely, a ceramic membrane of 5 kDa pore size provides the necessary rejection of phospholipids. There is some oil retention, that might require a downstream recovery step. The best results were obtained with cymene, suggesting this is a good target for industrial use.

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Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane

Cited by 13 publications

References 24 publications

Ultrafiltration Membrane for Degumming of Crude Palm Oil-Isopropanol Mixture

Ultrafiltration Membrane for Degumming of Crude Palm Oil-Isopropanol Mixture

Low-Cost Investment with High Quality Performance. Bleaching Earths for Phosphorus Reduction in the Low-Temperature Bleaching Process of Rapeseed Oil

Efficient degumming of crude canola oil using ultrafiltration membranes and bio-derived solvents

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