OPTIMIZATION OF CHEMICAL PROCESS PARAMETERS FOR DEFOLIANT PRODUCTION USING SODA INDUSTRY BY-PRODUCTS.

Khusanov Eldor Safariddinovich,Toshmurotova Pokiza Farhod kizi,Pardayev Ulugbek Khairullo ugli,Majidov Hayotjon Bakhtiyor ugli

Authors

Khusanov Eldor Safariddinovich,Toshmurotova Pokiza Farhod kizi,Pardayev Ulugbek Khairullo ugli,Majidov Hayotjon Bakhtiyor ugli Doctor of Philosophy (PhD) in Technical Sciences, Senior Lecturer at the Department of Chemistry, Faculty of Natural Sciences, Uzbekistan-Finland Pedagogical Institute,A student of the Chemistry program at the Faculty of Natural Sciences, Uzbekistan-Finland Pedagogical Institute,A student of the Chemistry program at the Faculty of Natural Sciences, Uzbekistan-Finland Pedagogical Institute,Doctoral student of the Department of Chemical Technologies at Navoi State University of Mining and Technology

Keywords:

Defoliants; Process optimization; Soda industry by-products; Chemical synthesis; Green chemistry; Calcium chloride; Sulfur compounds; Response surface methodology (RSM); Sustainable agrochemicals; Circular economy.

Abstract

This study presents the optimization of chemical process parameters for the synthesis of defoliants utilizing secondary by-products from the soda industry. Industrial residues such as calcium chloride, sodium carbonate, and sulfur-containing filtrates were selected as primary reactants. The experimental work focused on identifying optimal reaction temperature, pH, molar ratios, and reaction time to maximize defoliation efficiency and minimize environmental impact. A response surface methodology (RSM) was applied to evaluate the effect and interaction of multiple process variables on the yield and biological performance of the synthesized defoliants. The results demonstrated that a reaction temperature of 75–80°C, pH 6.5–7.5, and a molar ratio of 1:2 (CaCl₂ to sulfur source) provided the highest defoliation rates with minimal by-product formation.

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OPTIMIZATION OF CHEMICAL PROCESS PARAMETERS FOR DEFOLIANT PRODUCTION USING SODA INDUSTRY BY-PRODUCTS.

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