THE EFFECT OF ACTIVATED ALKALINE EARTH BENTONITE ON THE QUALITY OF VEGETABLE OILS

Authors

Nodirbek I. BOYJANOV, Urgench State University, Urgench, UzbekistanFollow
Islombek I. BOYJANOV, Urgench State University, Urgench, UzbekistanFollow
Аslbek B. YULCHIEV, Аndijan State University, Аndijan, UzbekistanFollow
Kamar P. SERKAYEV, Tashkent Institute of Chemical Technology, Tashkent, UzbekistanFollow

Abstract

The purpose of the research is to study the adsorption properties and mineralogical structure of alkaline earth bentonites from the Navbakhor deposit, as well as to develop technological regimes for their acid activation for use as bleaching clay in the purification of vegetable oils. The authors, based on the structural structure of the studied bentonites, achieved an increase in adsorption capacity from 35 cm³/g to 100 cm³/g, by treating with hydrochloric and sulfuric acids with a concentration of 15-20% and in a bentonite:acid ratio of 1:2.5 at a temperature below 100°С. Nitrogen adsorption isotherms of activated clays were obtained and the increase in specific surface area from 43.52 m²/g to 176.38 m²/g was determined using the BET analysis method. However, with an increase in concentration above 20%, the acid not only washes away metal oxides from the clay, but also leads to structural changes, subsequently reducing the adsorption surface to 85.42 cm³/g. The bleaching efficiency of activated clays was experimentally determined, which is 25-71%, depending on the amount of clay added.

Recommended Citation

BOYJANOV, Nodirbek I.; BOYJANOV, Islombek I.; YULCHIEV, Аslbek B.; and SERKAYEV, Kamar P. (2024) "THE EFFECT OF ACTIVATED ALKALINE EARTH BENTONITE ON THE QUALITY OF VEGETABLE OILS," CHEMISTRY AND CHEMICAL ENGINEERING: Vol. 2024: No. 1, Article 11.
DOI: https://doi.org/10.34920/cce2024111
Available at: https://cce.researchcommons.org/journal/vol2024/iss1/11