Naslov
The effect of the solid/liquid ratio on zinc and cadmium uptake on natural and iron-modified zeolite - batch scale design

Autori
Ugrina, M ; Vukojević Medvidović, N ; Trgo, M

Izvornik
Indian journal of chemical technology (0971-457X) 25 (2018), 3; 235-245

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cadmium, dimensional analysis, iron-modified zeolite, natural zeolite, reactor design, zinc

Sažetak
Zinc and cadmium uptake on natural (NZ) and iron-modified zeolite (IMZ) has been investigated to evaluate the effect of the solid-to-liquid ratio (S/L) on the removal efficiency and amount of metal removed per gram of zeolite. Two sets of experiments have been performed, the first one with varying S/L ratios at a constant initial metal concentration and the second one with different initial metal concentrations at a single S/L ratio. It has been found that the selection of the S/L ratio is a critical parameter in the practical application of the process. Two different methods for the design of batch reactor were applied to overcome the effect of the S/L ratio. The first approach applied the operating line method with the Dubinin- Radushkevich isotherm, and the second one applied the Rayleigh's method of dimensional analysis. The excellent agreement between predicted and experimentally obtained values for the amount of metal removed per gram of zeolite as well as error functions confirm the applicability of both methods in the batch scale design independently of the S/L ratio.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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