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AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING

Dajana Kučić   ORCID icon orcid.org/0000-0001-8427-6482 ; Faculty of Chemical Engineering and Technology, University of Zagreb, Croatia
Marinko Markić ; Faculty of Chemical Engineering and Technology, University of Zagreb, Croatia
Felicita Briški ; Faculty of Chemical Engineering and Technology, University of Zagreb, Croatia

Puni tekst: engleski, pdf (766 KB) str. 145-158 preuzimanja: 988* citiraj
APA 6th Edition
Kučić, D., Markić, M. i Briški, F. (2012). AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING. The holistic approach to environment, 2 (4), 145-158. Preuzeto s https://hrcak.srce.hr/93541
MLA 8th Edition
Kučić, Dajana, et al. "AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING." The holistic approach to environment, vol. 2, br. 4, 2012, str. 145-158. https://hrcak.srce.hr/93541. Citirano 08.12.2019.
Chicago 17th Edition
Kučić, Dajana, Marinko Markić i Felicita Briški. "AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING." The holistic approach to environment 2, br. 4 (2012): 145-158. https://hrcak.srce.hr/93541
Harvard
Kučić, D., Markić, M., i Briški, F. (2012). 'AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING', The holistic approach to environment, 2(4), str. 145-158. Preuzeto s: https://hrcak.srce.hr/93541 (Datum pristupa: 08.12.2019.)
Vancouver
Kučić D, Markić M, Briški F. AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING. The holistic approach to environment [Internet]. 2012 [pristupljeno 08.12.2019.];2(4):145-158. Dostupno na: https://hrcak.srce.hr/93541
IEEE
D. Kučić, M. Markić i F. Briški, "AMMONIUM ADSORPTION ON NATURAL ZEOLITE (CLINOPTILOLITE): ADSORPTION ISOTHERMS AND KINETICS MODELING", The holistic approach to environment, vol.2, br. 4, str. 145-158, 2012. [Online]. Dostupno na: https://hrcak.srce.hr/93541. [Citirano: 08.12.2019.]

Sažetak
A batch sorption process for removal of ammonium ions from aqueous solution using natural zeolite was studied. Tree different particle sizes of zeolite (1-2 mm, 2-4 mm and 4-10 mm) were used in the experiments. Sorption of ammonium ions on natural zeolite were carried out at 298 K with the initial concentrations of ammonium in the range of 1000 – 7000 mg NH4+-N/dm3. Equilibrium data were fitted by Freundlich and Langmuir isotherm and sorption kinetic data by pseudo-first and second order. The parameters were estimated by linear and non-linear method. Results show that non-linear method may be superior way to compute the parameters. The Langmuir isotherm model fitted better the experimental data with a maximum monolayer adsorption capacity of 58.36 mg NH4+-N/g (1-2 mm), 49.02 mg NH4+-N/g (2-4 mm) and 46.46 mg NH4+-N/g (4-10 mm), respectively. Also, the pseudo-second-order kinetic model was the best applicable model to describe the sorption kinetics. The obtained results suggest that the natural zeolite is a good adsorbent for removal of ammonium ions from aqueous solution and that ion exchange increased with decreasing of particle sizes of natural zeolite.

Ključne riječi
ammonium ions; natural zeolite; sorption isotherms; linear and non-linear regression

Hrčak ID: 93541

URI
https://hrcak.srce.hr/93541

Posjeta: 1.273 *