Natural zeolite from Krapina region, Croatia for ammonia gas sorption (CROSBI ID 534653)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Farkaš, Anamarija ; Tofant, Alenka ; Rožić, Mirela ; Tišma, Sanja
engleski
Natural zeolite from Krapina region, Croatia for ammonia gas sorption
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. Ammonia sorption on unmodified and modified zeolite samples was established at different initial concentrations of NH3. Natural exchanger was activated with NaCl, KCl, CaCl2 and MgCl2 salts solutions, treatment with HCl acid and NaOH base and was thermally activated at different temperatures. Results have shown that the acid-modified zeolite sample exhibited much better ammonia sorption capacity compared to natural zeolite. Acid treatment of zeolite increased its specific area and micropore volume, which were reduced by the basic and thermal treatments. Among the Na-form, K-form, Ca-form and Mg-form of zeolite, the best ammonia sorption was achieved with Ca- and Mg-forms.
natural zeolite ; ammonia adsorption
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Podaci o prilogu
242-243.
2008.
objavljeno
Podaci o matičnoj publikaciji
2nd International Conference on Engineering for Waste Valorisation, Proceedings, June 3-5, 2008, Patras, Greece
Prof. Gerasimos Lyberatos i prof. Ange Nzihou
Patras: University of Patras
Podaci o skupu
2nd International Conference on Engineering for Waste Valorisation, Proceedings, June 3-5, 2008, Patras, Greece
ostalo
03.06.2008-05.06.2008
Patras, Grčka