Naslov
Adsorption Characteristics of Different Adsorbents and Iron(III) Salt for Removing As(V) from Water

Autori
Ćurko, Josip ; Matošić, Marin ; Crnek, Vlado ; Stulić, Višnja ; Mijatović, Ivan

Izvornik
Food technology and biotechnology (1330-9862) 54 (2016), 2; 250-255

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, kratko priopcenje, znanstveni

Ključne riječi
Arsenic removal ; drinking water ; adsorption

Sažetak
The aim of this study was to determine adsorption performance of two adsorbents for removal of As(V) from water: Bayoxide® E33 (granular ferric oxide), Titansorb® (granular titanium oxide) and a suspension of precipitated iron(III) hydroxide. Results on As(V) adsorption stoichiometry for two adsorbents and precipitated iron(III) hydroxide in tap and demineralized water were fitted to Freundlich and Langmuir adsorption isotherm equations, from which adsorption constants and adsorption capacity were calculated. The separation factor RL for the three adsorbents ranged from 0.04 to 0.61, indicating effective adsorption. Precipitated iron(III) hydroxide showed the greatest capacity for adsorbing As(V), while Titansorb showed the lowest. Comparison of adsorption from tap or demineralized water showed that Bayoxide and precipitated iron(III) hydroxide had higher adsorption capacity in demineralized water, whereas Titansorb showed a slightly higher capacity in tap water. These results provide mechanistic insights into how commonly used adsorbents remove As(V) from water.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA