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A Study of the Structural Features and Textural Properties of Carbon Sorbents Derived from Recycled Polyethylene Terephthalate and Polyethylene Waste

Alisher KalbaevInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanAziza AbdikamalovaInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanDilzoda AsqarovaNamangan Engineering-Technological InstituteShahrom M. KhoshimovInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanRahimjon PaygamovInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanKhayot BakhronovTashkent University of Information Technologies named after Muhammad al-KhwarizmiKamoliddin KholikovNamangan Engineering-Technological InstituteDilnoza SalikhanovaInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanDilnoza JumaevaIzzat EshmetovInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanNursultan MaratovInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of UzbekistanMamataliev NozimInstitute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan
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Аннотация

Abstract. This article presents the results of a study on carbon sorbents obtained from recycled polyethylene terephthalate (PET) and polyethylene (PE) waste. The research focused on analyzing the structural features and textural properties of the sorbents, as well as their adsorption capabilities. It was found that the specific surface area of sorbents derived from PET with the addition of oxidized graphite reached 318.76 m²/g, while similar materials based on PE achieved up to 420.47 m²/g. These parameters, combined with an increased volume of micropores and mesopores, significantly enhance adsorption efficiency, particularly in water purification applications. The addition of a pore-forming resulted in a further increase in specific surface area, reaching 825.99 m²/g for PET-OG10 and 1011.78 m²/g for PE-OG10, making these materials particularly promising for adsorption processes. Experimental results confirmed that such carbon-based sorbents effectively remove heavy metals and organic pollutants from water due to their well-developed micro- and mesoporous structure. Thus, the findings of this study highlight the potential of recycled polymeric materials for the development of novel high-performance sorbents, contributing to enhanced environmental safety and sustainable waste management. Resumen. Este artículo presenta los resultados de un estudio sobre sorbentes de carbono obtenidos a partir de residuos reciclados de politereftalato de etileno (PET) y polietileno (PE). La investigación se centró en el análisis de las características estructurales y las propiedades texturales de los sorbentes, así como en su capacidad de adsorción. Se encontró que el área superficial específica de los sorbentes derivados del PET con la adición de grafito oxidado alcanzó los 318.76 m²/g, mientras que materiales similares basados en PE lograron hasta 420,47 m²/g. Estos parámetros, combinados con un aumento en el volumen de microporos y mesoporos, mejoran significativamente la eficiencia de adsorción, particularmente en aplicaciones de purificación de agua. La adición de un porógeno resultó en un aumento adicional del área superficial específica, alcanzando 825.99 m²/g para PET-OG10 y 1011.78 m²/g para PE-OG10, lo que hace que estos materiales sean especialmente prometedores para los procesos de adsorción. Los resultados experimentales confirmaron que estos sorbentes a base de carbono eliminan eficazmente metales pesados y contaminantes orgánicos del agua, gracias a su estructura bien desarrollada de micro y mesoporos. Por lo tanto, los hallazgos de este estudio destacan el potencial de los materiales poliméricos reciclados para el desarrollo de nuevos sorbentes de alto rendimiento, contribuyendo así a una mayor seguridad ambiental y a una gestión sostenible de residuos.

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