Naslov
Removal of Iron Ions Form Water by Using Clinoptilolite-Rich Rock and its Na-Enriched Form: a Kinetic Approach

Autori
Bolanča, Tomislav ; Ukić, Šime ; Ćurković, Lidija ; Šiljeg, Mario

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings 2011 World Congress on Engineering and Technology / - Peking : IEEE PRESS, 2011, 141-145

ISBN
978-1-61284-362-9

Skup
CET 2011 - World Congress on Engineering and Technology

Mjesto i datum
Šangaj, Kina, 28.10.2011. - 02.11.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
clinoptilolite-rich rock; Na-enriched modification; iron removal; kinetic models

Sažetak
The present study demonstrates the ability of the clinoptilolite-rich rock (Cp), from Donje Jesenje-Croatia, and its Na-enriched form (Na-Cp) to remove iron ions from acid aqueous solutions. Cp contains the following exchangeable cations Na+, K+, Ca2+, and Mg2+ and after being treated with 2 M NaCl solution at 70 °C it was converted to a homoionic Na-Cp. The uptake of Fe3+ by the not modified and Na-enriched clinoptilolite-rich rock has been investigated using following conditions: solution concentration of 100 mg/L Fe3+, pH value 1.90, equilibrium time from 30 to 300 min. Different kinetic models were developed to model the Fe3+ uptake by Cp and Na-Cp, based on the first-order kinetics, modified Freundlich and Elovich models, parabolic diffusion and heterogeneous diffusion models. It is shown that developed models described the Fe3+ uptake adequately, with correlation coefficient (R2) ranging from 0.9804 to 0.9954.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

POVEZANOST RADA