Highly effective asphaltene-derived adsorbents for gas phase removal of volatile organic compounds - Publikacja - MOST Wiedzy

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Highly effective asphaltene-derived adsorbents for gas phase removal of volatile organic compounds

Abstrakt

A novel nitrated asphaltene-derived adsorbent (Asf-Nitro) was prepared using facile isolation and modification procedures. The successful modification was confirmed by Fourier-transform infrared spectroscopy (FTIR). The nitrated adsorbent was evaluated in terms of dispersive and specific interactions, Lewis acid-base properties and adsorption isotherms by means of inverse gas chromatography (IGC). Nitration was found to be extremely effective in enhancing adsorption properties of asphaltenes towards variety of chemical compounds. Asf-Nitro adsorbent exhibits superior dispersive interactions (197.50 ± 1.12 mJ m-2 at 423 K), as compared to unmodified asphaltenes, which are comparable with activated carbons, zeolites or alumina. Examination of the specific interactions revealed a shift from basic to acidic character of the surface, what will be beneficial for adsorption of alkaline gases. Additionally, adsorption isotherms revealed that developed surface properties of the Asf-Nitro results in more than doubled monolayer adsorption capacity. Obtained results demonstrates the applicability of the asphaltene-derived materials in adsorption processes as highly effective and low cost adsorbents. This studies revealed a highly effective adsorption of environmentally important VOCs, e.g. n-butanol (odorous compound), trichloromethane (chlorinated hydrocarbon) and benzene (carcinogenic).

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
SEPARATION AND PURIFICATION TECHNOLOGY nr 224, strony 315 - 321,
ISSN: 1383-5866
Język:
angielski
Rok wydania:
2019
Opis bibliograficzny:
Plata-Gryl M., Momotko M., Makowiec S., Boczkaj G.: Highly effective asphaltene-derived adsorbents for gas phase removal of volatile organic compounds// SEPARATION AND PURIFICATION TECHNOLOGY. -Vol. 224, (2019), s.315-321
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.seppur.2019.05.041
Weryfikacja:
Politechnika Gdańska

wyświetlono 11 razy

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