OPTIMAL CONDITIONS FOR EXTRACTION OF VALUABLE COMPONENTS FROM RICE HUSK
DOI:
https://doi.org/10.5281/zenodo.22835071Abstract
The optimal technological parameters for the complex extraction of cellulose, lignin, and silica through the alkaline treatment of rice husk were determined. The effects of sodium hydroxide (NaOH) concentration, treatment temperature, and processing duration on process efficiency were experimentally evaluated. The results demonstrated that the optimal process conditions were achieved at a rice husk-to-solution ratio of 1:10, a NaOH concentration of 15%, a treatment temperature of 120 °C, and a processing duration of 120 minutes. Under these conditions, up to 93% of the inorganic components were dissolved, while the cellulose yield reached 35%. The extracted cellulose was identified as a promising raw material for nanocellulose production, whereas lignin and silica demonstrated considerable potential for applications in the chemical, construction, and composite materials industries. The obtained results provide a scientific and practical basis for developing resource-efficient and environmentally friendly technologies for the complex processing of rice husk and the production of high-value-added products from agricultural waste.Keywords
rice husk, lignocellulosic biomass, cellulose, lignin, silicon dioxide, sodium hydroxide, alkaline treatment, technological optimization, nanocelluloseReferences
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