Naslov
Optimization of removal efficiency and minimum contact time for cadmium and zinc removal onto iron-modified zeolite in a two-stage batch sorption reactor

Autori
Ugrina, Marin ; Vukojević Medvidović, Nediljka ; Trgo, Marina ; Nuić, Ivona

Izvornik
Chemical and biochemical engeenering quartely (0352-9568) 31 (2017), 4; 425-435

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

Ključne riječi
two-stage batch design ; iron-modified zeolite ; zinc ; cadmium ; optimization

Sažetak
In highly congested industrial sites where significant volumes of effluents have to be treated in the minimum contact time, the application of a multi-stage batch reactor is suggested. To achieve better balance between capacity utilization and cost efficiency in design optimization, a two-stage batch reactor is usually the optimal solution. Thus, in this paper, a two-stage batch sorption design approach was applied to the experimental data of cadmium and zinc uptake onto iron-modified zeolite. The optimization approach involves the application of the Vermeulen's approximation model and mass balance equation to kinetic data. A design analysis method was developed to optimize the removal efficiency and minimum total contact time by combining the time required in the two-stages, in order to achieve the maximum percentage of cadmium and zinc removal using a fixed mass of zeolite. The benefits and limitations of the two-stage design approach have been investigated and discussed.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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