Investigation of conversion of sunflower oil production wastes to high value compounds by supercritical CO2

Authors : Müberra Nur KILIÇARSLAN, Mehmet Emin ARGUN

Pages : 94-101

Doi:10.35208/ert.1245691

View : 57 | Download : 58

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :The evaluation of wastes from edible oil production industry has increasing importance because of resources deficiency and growing population day by day. It was aimed to investigate the recovery potential of oil and valuable components from sunflower oil production wastes by using supercritical CO2 insert ignore into journalissuearticles values(SC- CO2); extraction as a green extraction method. In this context oil amounts, total phenolic content insert ignore into journalissuearticles values(TPC);, total flavonoid content and antioxidant activities were analysed. The waste samples obtained from filtration processes of the oil which were composed of oily bentonite insert ignore into journalissuearticles values(OB); and waxy perlite insert ignore into journalissuearticles values(WP);. Soxhlet extraction was also applied on the waste samples to calculate extraction efficiencies of the SC- CO2. It was observed that oil recovery efficiency of OB insert ignore into journalissuearticles values(27%, v/v); were more effective than WP insert ignore into journalissuearticles values(11%, v/v);. However, the efficiency increased to 37% by mixing expanded perlite and OB sample to absorb moisture content of the waste and to increase the diffusion of carbon dioxide more easily. The statistical evaluation of the experiments was also conducted to determine the effect of independent variables on the recovery efficiencys. Pressure was detected more effective variables on the recovery values than temperature. The maximum recovery efficiencies of the oil and TPC were obtained at the 50 oC, 22.1 MPa and 60 oC, 20 MPa, respectively.
Keywords : Sunflower oil, Supercritical CO2 extractions, Upcycling, Value added content, Waste