Naslov
Intraparticle diffusion of Pb, Cu and Zn ions during exchange process on the natural zeolite clinoptilolite

Autori
Trgo, Marina ; Vukojević Medvidović, Nediljka ; Perić, Jelena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zeolite`06 / Bowman S. Robert, Delap E. Susan - Socorro (NM) : INZA, 2006, 232-233

Skup
7th International Conference on the Occurence, Properties and Utilization of Natural Zeolites

Mjesto i datum
Socorro (NM), Sjedinjene Američke Države, 16.07.2006. - 21.07.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
lead; copper; zinc; diffusion; clinoptilolite

Sažetak
It is well known that natural zeolites behave as good ion exchangers for removal of heavy metal ions from aqueous solutions. But the selectivity of natural zeolite for a particular ion depends on the type of zeolite and on the type, hydrated radius, and concentration, of exchangeable ion in the solution. Examination of ion exchange kinetics, determination of diffusion rate, diffusion coefficients, and the mechanism that controls the overall process are important for application of these processes in practice. The diffusion kinetics of heavy metal ions is often examined on natural zeolite clinoptilolite which shows high selectivity for these ions, e.g., for lead ions. This paper examines the kinetics of lead, copper, and zinc ion exchange on clinoptilolite. The kinetic parameters of the ion exchange process have been calculated using the empirical homogeneous diffusion model.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA