Physical refining of edible oil

1984 ◽  
Vol 61 (7) ◽  
pp. 1253-1258 ◽  
Author(s):  
D. C. Tandy ◽  
W. J. Mcpherson
Keyword(s):  
Physical Refining ◽  
Edible Oil

scholarly journals Optimisation of edible oil effluent degredation by microorganisms

2003 ◽  
Author(s):  
◽  
Swastika Surujlal
Keyword(s):  
South Africa ◽  
Potable Water ◽  
Oil Industry ◽  
Physical Refining ◽  
Edible Oil ◽  
Organic Load ◽  
Water Quality Standards ◽  
High Demand ◽  
Effluent Quality ◽  
Very High

Water is a precious and very valuable resource. Water resource shortages are problems that are plaguing the world. There is therefore a high demand for tightening water quality standards for both potable water and waters in the environment. It is becoming a necessity to treat and reuse wastewaters, especially wastewaters from industries, as these waters are of concern due to their toxic effects on the environment. In South Africa one of the industries of major concern is that of the edible oil industry and there are over a dozen ofthese industries in South Africa alone. Each of these industries utilises approximately 1.75 million m3 of water and discharges approximately 0.61 million m3 to the sewer each year. This wastewater that is being released has very high organic, inorganic and fats, oils and greases loads. Depending on the type of refinery process conducted on the crude oil, the effluent quality and quantity varies on a day to day basis. The two types of refinery procedures are the physical refining, where water is used or chemical refining where caustic soda is used. The organic load ofthe untreated effluent can range from 1 100 to 8 990 mg COD/L, the oils and greases can range from 80 to 1 360 mg/L and the pH can range from 1.8 to 10.5.

scholarly journals BEST PRACTICE APPROACH FOR WASTEWATER MANAGEMENT IN THE EDIBLE OIL INDUSTRY

2019 ◽  
Vol 19 ◽  
pp. 128-132
Author(s):  
K. Stepova ◽  
O. Derun
Keyword(s):  
Pathogenic Bacteria ◽  
Best Practice ◽  
Oil Industry ◽  
Physical Refining ◽  
Edible Oil ◽  
Wastewater Management ◽  
Stage Of Development ◽  
Treated Effluent ◽  
Practice Approach ◽  
The Impact

Abstract. The capacity growth of the edible oil enterprises at the present stage of development leads to the formation of huge amounts of used water, which form the production wastewater. The main pollutants are organic substances, mainly fat. The existing treatment plants are not able to remove them from the water up to the level of sanitary requirements. These pollutants cause the processes of decay, water blooming, infection with pathogenic bacteria and, as a result, adversely affect the fauna and flora. For many enterprises in the industry, proper wastewater treatment is a significant problem. In industry, in order to reduce the amount of water used, and improve the quality and/or quantity of the effluent, it is strongly recommended that a ‘best practice’ approach is adopted, where avoidance of water usage is the most desirable, and disposal of wastewater the least desirable practice. Aim of the study. To propose measures for reducing the impact of edible oil industry on the state of surface wa-ter basing on the Best practice approach. 132 Вісник ЛДУБЖД, №19, 2019  As a result of the studies, the increase of the pollutants content in river water after the wastewater discharge of the edible oil production was revealed. In particular, the content of nitrite, nitrate and ammonium nitrogen, hydrocar-bons, chlorides and sulfates, fats and oils increased; the total iron content increased 10 times. The phosphates, petrole-um products and surfactants were defined.Suggested measures for optimising water efficiency in the edible oil industry include: physical refining, continuous deodorization, cleaning in place, recovery of heat condensates, equipment upgrade, dry clean-up techniques, cooling towers, blowdown wastewater recycling, installation of water meters, education of staff, re-use water, re-use treated effluent.

scholarly journals Attempts of Physical Refining of Sterol-Rich Sunflower Press Oil to Obtain Minimally Processed Edible Oil

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1901
Author(s):  
Aída García-González ◽  
Joaquín Velasco ◽  
Leonardo Velasco ◽  
M. Victoria Ruiz-Méndez
Keyword(s):  
Solvent Extraction ◽  
Total Content ◽  
Physical Refining ◽  
Edible Oil ◽  
Crude Oils ◽  
Chemical Processing ◽  
Sunflower Seeds ◽  
Minimally Processed ◽  
Minimal Processing ◽  
Chemical Refining

New phytosterol (PS)-enriched sunflower seeds, which are higher in campesterol and ∆7-stigmastenol, have recently been developed. Crude oils obtained from these new sunflower seeds in 2015 and 2017 were used in this study. Oils extracted only by press (PO) and with subsequent solvent extraction (SO) were characterized. Physical refining (PhR) was used to obtain edible PO by minimal processing and to keep the PS levels as high as possible. Oils obtained by chemical processing were also studied for comparative purposes. Different bleaching treatments were examined to reduce the contents of phospholipids in the PO to levels required for PhR (<10 mg kg−1). Phosphorous levels in PO from 2015 (9–12 mg kg−1) were reduced to optimal levels by bleaching with 0.1% Trisyl and 1% Tonsil 278 FF. Contrarily, treatments with Trisyl and Tonsil (278 FF or 114 FF) were not sufficient to reduce the higher levels in PO from 2017 (15–36 mg/kg−1), thereby they were subjected to chemical refining (ChR). The PhR applied to PO from 2015 did not lead to substantial changes in the composition and total content of PS. In contrast, losses of up to approximately 30% of total PS were found owing to ChR, although the oils preserved their unique PS profiles.

Use of the electro-separation method for improvement of the utility value of winter rapeseeds

2013 ◽  
Vol 27 (4) ◽  
pp. 419-424 ◽  
Author(s):  
S.J. Kovalyshyn ◽  
O.P. Shvets ◽  
S. Grundas ◽  
J. Tys
Keyword(s):  
Corona Discharge ◽  
Mechanical Damage ◽  
Edible Oil ◽  
Separation Method ◽  
Utility Value ◽  
X Ray ◽  
Winter Rapeseed ◽  
The Mean ◽  
Discharge Field ◽  
Prototype Apparatus

Abstract The paper presents the results of a study of the use of electro-separation methods for improvement of the utility value of 5 winter rapeseed cultivars. The process of electro-separation of rapeseed was conducted on a prototype apparatus built at the Laboratory of Application of Electro-technologies in Agriculture, Lviv National Agriculture University. The process facilitated separation of damaged, low quality seeds from the sowing material. The initial mean level of mechanically damaged seeds in the winter rapeseed cultivars studied varied within the range of 15.8-20.1%. Verification of the amount of seeds with mechanical damage was performed on X-ray images of seeds acquired by means of a digital X-ray apparatus. In the course of analysis of the X-ray images, it was noted that the mean level of mechanical damage to the seeds after the electro-separation was in the range of 2.1-3.8%. The application of the method of separation of rapeseeds in the corona discharge field yielded a significant reduction of the level of seeds with mechanical damage. The application of the method in practice may effectively contribute to improvement of the utility value of sowing material or seed material for production of edible oil.

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