Sadržaj voskova i ulja u filtracionoj pogači nakon filtracije ulja suncokreta pomoću filtracionog sredstva na bazi celuloze / Wax and oil content of filter cake after sunflower oil filtration used celluloze filter aid
2019
Nedić-Grujin, Katarina (AD Dijamant, Zrenjanin (Srbija)) | Romanić, Ranko (https://orcid.org/0000-0002-5329-4511) | Nikolovski, Branislava (https://orcid.org/0000-0002-0753-3155)
Sunflower oil contains waxes, esters of fatty acids and fatty alcohols. Waxes have higher melting points and when the oil is stored at low temperature they crystallize 162 and form a deposit. Waxes are removed from the oil by winterization and filtration or centrifugation or by combination of them both. The filtration agent is used during filtration to allow higher filtrate flow and extend the filtration time. For the filtration of sunflower oil, a cellulose-based filtration agent was used, one as a precoat and another as a bodyfeed during the filtration process. Filtration was taken place on horizontal ram filters. At the end of filter cycle, filter cake has been formed on ram filters. Filter cake consists of a mixture of filtering aids, oil and waxes. In this work content of filter cake were analyzed and also content of waxes in oil before and after winterization and filtration. In examined sunflower oils before filtration content of waxes were from 366±7 mg/kg to 547±9 mg/kg. After winterization content of waxes in oils were from 2,94±0,05 mg/kg to 3,19±0,08 mg/kg. In filter cake content of oil and waxes both were from 53,22±0,63% to 55,3±0,75%, content of waxes were from 22,05±0,58% to 26,05±0,47%.
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