Study of the mechanism and efficiency of using mineral-organic  bleaching-filtering agents in polishing refining

N.I. Boyjanov; Z.R. Kurayazov; B.R. Annazarova; S.M. Jollibekov; N.D. Tajetdinov; M.O. Khamidova; A.N. Akhmedov

doi:10.31643/2028/6445.20

Authors

N.I. Boyjanov Urgench State University named after Abu Rayhon Beruni
Z.R. Kurayazov Urgench State University named after Abu Rayhon Beruni
B.R. Annazarova Non-government Educational Institution Mamun University
S.M. Jollibekov Karakalpakstan Institute of Agriculture and Agrotechnology
N.D. Tajetdinov Karakalpakstan Institute of Agriculture and Agrotechnology
M.O. Khamidova Tashkent Chemical-Technological Institute
A.N. Akhmedov Karshi State Technical University

DOI:

https://doi.org/10.31643/2028/6445.20

Keywords:

bentonite clay, opoka-type clay, sunflower husk, BET analysis, activation, pyrolysis, composition, polishing refining, bleaching-filtering agent.

Abstract

In this scientific study, the main objective is to purify vegetable oils stored in the state reserve for an extended period to reach consumable quality based on their physicochemical parameters. In the experiments, polishing refining of cottonseed oils stored for 6 months or longer was carried out. By analyzing the physicochemical parameters of polishing-refined vegetable oils, selective bleaching-filtering agents (BFAs) with various pore structures were obtained for use in the bleaching-filtration stage. The BFAs were obtained through acid activation of bentonitic and opoka-type clays, as well as pyrolysis of sunflower husk. The filtration capacities of each activated BFA toward polishing-refined oils were investigated. The findings show that the highest efficiency was achieved when a composite BFA of the BK grade-prepared at a 1:1 mass ratio of acid-activated Navbahor alkali bentonite (ANAB) and pyrolyzed sunflower husk (P-SH) was added at 1.5-2.0% relative to the oil mass. The research results demonstrate that a composition consisting of polar organic and non-polar inorganic components was successfully obtained, capable of filtering fine soapstock particles while not resisting pressure buildup during the filtration process.

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Author Biographies

N.I. Boyjanov, Urgench State University named after Abu Rayhon Beruni

Doctor of Philosophy in Technical Sciences, Associate Professor at the Faculty of Chemical Technology, Urgench State University named after Abu Rayhon Beruni, 220100, H. Olimjon Street 14, Urgench, Uzbekistan. ORCID ID: https://orcid.org/0009-0002-1454-9478

Z.R. Kurayazov, Urgench State University named after Abu Rayhon Beruni

Doctor of Philosophy in Technical Sciences, Associate Professor at the Faculty of Chemical Technology, Urgench State University named after Abu Rayhon Beruni, 220100, H. Olimjon Street 14, Urgench, Uzbekistan. ORCID ID: https://orcid.org/0000-0002-9217-0669

B.R. Annazarova, Non-government Educational Institution Mamun University

Non-government Educational Institution Mamun University, Khiva, Uzbekistan. ORCID ID: https://orcid.org/0009-0007-1821-9886

S.M. Jollibekov, Karakalpakstan Institute of Agriculture and Agrotechnology

Karakalpakstan Institute of Agriculture and Agrotechnologies, Nukus, Узбекистан. ORCID ID: https://orcid.org/0009-0001-0390-3892

N.D. Tajetdinov, Karakalpakstan Institute of Agriculture and Agrotechnology

Associate Professor of the Karakalpakstan Institute of Agriculture and Agrotechnology, Nukus, Узбекистан. ORCID ID: https://orcid.org/0009-0007-0516-3772

M.O. Khamidova, Tashkent Chemical-Technological Institute

Associate Professor at the Tashkent Institute of Chemical Technology, Navoi Street, 32, Tashkent, Uzbekistan. ORCID ID: https://orcid.org/0000-0002-7299-0395

A.N. Akhmedov, Karshi State Technical University

Doctor of Technical Sciences, Professor of the Shahrisabz Faculty of Food Engineering, Karshi State Technical University, Khanabad Avenue, 19, Uzbekistan. ORCID ID: https://orcid.org/0000-0002-8072-7458

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