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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

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2025

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[Z] 79, 3-4

199--214

PL

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.

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Usuwanie wybranych składników zawartych w kosmetykach przy pomocy adsorbentów węglowych otrzymanych z kory dębu

Żuberek Karolina, Wolski Robert, Paluch Dorota, Pietrzak Robert

Wiadomości Chemiczne

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2025

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[Z] 79, 5-6

297--317

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Skuteczne usuwanie barwników organicznych za pomocą biowęgli otrzymanych z pozostałości po ekstrakcji nadkrytycznej nasion marchwi

Zieliński Damian, Paluch Dorota, Bazan-Woźniak Aleksandra, Wolski Robert, Pietrzak Robert

Wiadomości Chemiczne

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2025

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[Z] 79, 3-4

181--198

EN

The continuous development of the food, pharmaceutical, and chemical industries has led to increasing environmental pollution. Stricter legal regulations concerning air and water quality have intensified the search for more effective purification methods. Surface waters used for consumption are heavily contaminated by industrial and municipal wastewater discharge. The study presents the preparation, physicochemical properties, and adsorption capacities of activated carbons derived from residues of supercritical extraction of carrot seeds. The carbonization process led to a reduction in volatile matter and a significant increase in mineral content compared to the raw material. Acid-base analysis revealed variations in oxygen functional groups, with physically activated carbons displaying basic character and chemically activated ones showing acidic properties. The findings suggest that carrot seed extraction residues can serve as a cost-effective raw material for producing efficient carbon-based adsorbents for liquid-phase pollutant removal.