STUDY OF THE ELEMENTAL COMPOSITION AND PHYSICOCHEMICAL PROPERTIES OF BIOCHAR OBTAINED FROM COTTON STALK WASTE BY PYROLYSIS
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Keywords

Cotton waste, biochar, pyrolysis methods, pyrolysis device, elemental composition, X-ray spectroscopy.

How to Cite

X.A, D., B.M, T., & M.D, U. (2026). STUDY OF THE ELEMENTAL COMPOSITION AND PHYSICOCHEMICAL PROPERTIES OF BIOCHAR OBTAINED FROM COTTON STALK WASTE BY PYROLYSIS. Advances in Science and Sustainability, 2(04), 3-7. https://doi.org/10.70728/susta.v02.i04.001

Abstract

In this study, the authors developed a thermochemical loading method for producing biochar through the pyrolysis of cotton waste, and conducted a physicochemical analysis of the results. The cotton waste was thermally processed at a temperature range of 500÷600 °C to obtain high-carbon, solid heat biochar. Using the PQ-100 “Pipe-in-a-Pipe” type pyrolysis device (Figure 1), high-carbon, porous, multifunctional biochar samples were obtained from the cotton waste, the subject of experimental research (Figure 2). The elemental composition of the biochar samples was analysed using energy-dispersive X-ray spectroscopy (EDS), and the amounts of the available products were determined: carbon (70÷72%), oxygen (11÷15%), hydrogen (3.0÷3.1%), nitrogen (0.8÷1.8%) and nitrogen (0.8÷1.8%). EDS spectrum analysis indicates that the biochar has a high carbon content.

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References

1. Aller, D., Bakshi, S., Laird, D., 2017. Modified method for proximate analysis of biochar. J. Anal. Appl. Pyrolysis 124, 335–342.

2. Bardi, M., Mutunga, J., Ndiritu, H., Koch, K., 2023. Effect of pyrolysis temperature on the physiochemical properties of bioko’mir and its potential use in anaerobic digestion: A critical review. Env. Technol. Innov 32, 103349.

3. Toshmamatov B., Uzakov G., Baibhaw K., Davlonov Kh., Teimurkhanov A., Shamurotova S., Mehdiyeva A. Heliothermal Conversion of Municipal Household Waste into Biogas: A Sustainable Approach for Environmental Protection and Resource Recovery. Power System Technology. 05.01.2025. 131-151 pp.

4. Bavariani, M., Ronaghi, A., Ghasemi, R., 2019. Influence of pyrolysis temperatures on FTIR analysis, nutrient bioavailability, and agricultural use of poultry manure biochar. Commun. Soil Sci. Plant Anal. 50, 402–411.

5. Uzakov G.N. et al. 2025. Development of a hybrid pyrolysis device and justification of energy efficiency. E3S Web of Conferences 623, 03012

6. Tomczyk, A., Sokolowska, Z., Boguta, P., 2020. Biochar physicochemical properties: pyrolysis temperature and feedstock kind effects. Rev. Env. Sci. Biotechnol. 19, 191–215.

7. He, D., Luo, Y., Zhu, B., 2024. Feedstock and pyrolysis temperature influence biochar properties and its interactions with soil substances: Insights from a DFT calculation. Sci. Total. Env. 922, 171259.

8. Toshmamatov B.M., Uzboev M.D., Mamatova M.Sh. Analysis Of Thermal And Technical Parameters Of Alternative Fuels Obtained From Biomass Pyrolysis. American Journal of Applied Science and Technology. Vol.05 Issue 12 2025. 161-166 pp.

9. Toshmamatov B.M., Uzboev M.D., Mamatova M. Development of a Method for Obtaining Energy-Efficient Water-Coal Fuel Based on Biomass Pyrolysis Products. Alternative energy. 2025. 4(21). pp. 38-44.

10. Toshmamatov B.M. Uzboev M.D., Toshboev A.R. FTIR Analysis of Coal–Water Alternative Fuel. Alternative energy. 2025. 4 (21). pp. 45-48.

11. Toshmamatov B.M. Uzboev M.D. Analysis of technologies and devices for burning alternative biomass-derived fuels. International Journal of Science and Technology, Volume 03, Issue 02. 2026, PP. 13–17.

12. Chatterjee, R., Sajjadi, B., Chen, W.Y., Mattern, D., Hammer, N., Raman, V., Dorris, A., 2020. Effect of pyrolysis temperature on physicochemical properties and acousticbased amination of bioko’mir for efficient CO2 adsorption. Front. Energy Res. 8.

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