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Pregled bibliografske jedinice broj: 202837

Zbornik radova

Autori: Farkaš, Anamarija; Cerjan-Stefanović, Štefica; Filipan, Tugomir; Rožić, Mirela; Pisarović, Anamarija; Tišma, Sanja
Naslov: Natural and modified clinoptilolite from Krapina region, Croatia, for ammonia gas sorption
Izvornik: 3rd FEZA Conference, Book of abstracts and recent research reportsPrag :
Skup: 3rd FEZA Conference
Mjesto i datum: Prag, Češka, 23-26.08.2005.
Ključne riječi: ammonia sorption; clinoptilolite; Croatia
Sažetak:
The paper investigates the possibility of ammonia sorption from air by using natural zeolite (clinoptilolite) from sedimentary ore from the area of Donje Jesenje, Krapina, Croatia. Natural zeolite contains mostly calcium and the least sodium ions as exchangeable cations. The studied natural zeolite was also activated with NaCl, KCl and MgCL2 salts solutions, treatment with HCl acid and NaOH base as well as thermally activated at different temperatures, so the properties of this modified zeolite samples as ammonia sorbents were investigated as well. Ammonia sorption was better on natural and Mg-form zeolite, whereas lower sorption capacity was recorded for Na and K forms of zeolite. Results have shown that the acid-modified zeolite sample exhibited much better ammonia sorption capacity compared to natural zeolite. It was found that an increase of temperature at which zeolite is treated considerably reduces ammonia sorption on zeolite similarly to zeolite treatment in NaOH solution.
Vrsta sudjelovanja: Poster
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 0017002
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Kemija



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