Abstracts

The aim of this study was to predict the calorific value of plant biomass based on its chemical composition. Lignin and ash contents, as well as elemental composition (C, H, N, O), were analyzed in biomass derived from tobacco, maize, and sunflower stalks. Using the obtained parameters, empirical equations were applied to estimate the calorific (heating) value of the biomass. The use of chemical indicators enables a rapid and reliable assessment of biomass energy potential without the need for direct calorimetric measurements. The results indicate that lignin and ash contents have a significant influence on calorific value, while elemental composition allows for more precise quantification. The obtained data provides a basis for optimizing the utilization of plant biomass in biofuel production and thermal energy generation, thereby contributing to the sustainable use of renewable energy sources.

Keywords

Plant biomass, Calorific value, Lignin, Ash, Elemental composition, Prediction, Biofuel

Acknowledgment

This work is the result of research conducted within the framework of the Agreement on the Implementation and Financing of Scientific Research concluded in 2025 between the Ministry of Science, Technological Development, and Innovation of the Republic of Serbia and the Faculty of Agriculture, University of Belgrade, contract number: 451-03-137/2025- 03/200116.

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