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1 2025

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Węglowe materiały adsorpcyjne z pozostałości po ekstrakcji nadkrytycznej róży pomarszczonej do oczyszczania gazów i cieczy

Wierzba Martyna, Paluch Dorota, Bazan-Woźniak Aleksandra, Pietrzak Robert

Wiadomości Chemiczne

2025

[Z] 79, 3-4

199--214

The present study demonstrates that the waste material resulting from the supercritical extraction of Rosa rugosa can serve as a cost-effective precursor for the production of carbon adsorbents, which exhibit excellent sorption capacities for gaseous and liquid pollutants. The mineral content of the adsorbents is reduced by direct activation in both microwave and conventional furnaces in comparison to the mineral content of the raw material. The activated carbons obtained contain less than 4.8% ash, with the mineral content increasing in line with the activation temperature. Furthermore, surface chemistry analysis revealed that all samples exhibit basic functional groups, whose concentration rises with temperature. The adsorbents show limited efficiency in hydrogen sulfide removal, with improved performance in humid conditions. It was found that many of the carbons produced demonstrated strong adsorption capabilities for liquid-phase pollutants, with the most effective adsorbent for iodine, methylene blue, and Eriochrome Black T being the sample activated at 800°C in a conventional furnace. Conventional heating methods were found to yield higher sorption capacities in comparison to microwave activation techniques.