ISJ Theoretical & Applied Science 09(101) 2021

Philadelphia, USA

Ismoilova, M. A., Salixanova, D. S., Sadullaeva, M. S., Ruzmetova, D. T., & Agzamova, F. N.

Obtaining clay adsorbents for bleaching vegetable oil based on bentonits of Uzbekistan.

Full Article: PDF

Scientific Object Identifier: http://s-o-i.org/1.1/TAS-09-101-112

DOI: https://dx.doi.org/10.15863/TAS.2021.09.101.112

Language: English

Citation: Ismoilova, M. A., Salixanova, D. S., Sadullaeva, M. S., Ruzmetova, D. T., & Agzamova, F. N. (2021). Obtaining clay adsorbents for bleaching vegetable oil based on bentonits of Uzbekistan. ISJ Theoretical & Applied Science, 09 (101), 780-786. Soi: http://s-o-i.org/1.1/TAS-09-101-112 Doi: https://dx.doi.org/10.15863/TAS.2021.09.101.112

Pages: 780-786

Published: 30.09.2021

Abstract: This article considers the possibility of obtaining bentonite adsorbents from local bentonites by acid activation for the purification of vegetable oils. Based on the study, the adsorption of benzene and water vapours on activated bentonite adsorbents established that the value of the activated Krantau and Askamar samples is almost 2.5 times higher than the initial ones. It is necessary to pay special attention to the fact that, even at low relative pressure values (P / Ps = 0.2), the adsorption of benzene vapour increases sharply due to the montmorillonite hydrophilicity. Based on the study, the adsorption of benzene and water vapours on activated bentonite adsorbents established that the value of the activated Krantau and Askamar samples is almost 2.5 times higher than the initial ones. It is necessary to pay special attention to the fact that, even at low values of relative pressure (P/Ps = 0.2), the adsorption of benzene vapour increases sharply due to the montmorillonite hydrophilicity. Therefore, the activated samples' adsorption values of benzene vapours are much higher than those of the original illustrations. It confirms that the activator and activation conditions are correctly selected. Furthermore, it was established that biological samples of Askamar and Krantau bentonite belong to micro-and mesoporous adsorbents since they have a large amount of the latter.

Key words: vegetable oils, bleaching, acid number, bentonite, peroxide number, activation, adsorption.