Naslov
Cyclic zinc capture and zeolite regeneration using a column method, mass transfer analysis of multi regenerated bed

Autori
Vukojević Medvidović, Nediljka ; Svilović, Sandra

Vrsta, podvrsta
Radovi u časopisima, znanstveni

Izvornik
Journal of environmental health science and engineering (2023)

Status rada
Online first

Ključne riječi
Column method ; Cyclic adsorption/regeneration ; Multi regenerated bed ; Mass transfer analysis ; Rate profle ; Infection point

Sažetak
Treatment of wastewater and reuse of purified water in an industrial process can provide an alternative source of fresh water as well as reduce pollution load by discharging a lower quantity of wastewater. When adsorption is used for treatment, the regeneration of the used adsorbent may also account for a large portion of the operational cost and cause secondary pollution. This problem may be solved by cyclic repetition of adsorption/regeneration cycles using a column method. In this paper, a total of nine successive cycles of zinc capture and zeolite bed regeneration using a column method have been investigated. The derived form of the breakthrough curve was used for analysing mass transfer in the column. For that purpose, the Dose–response, the Thomas, the Bohart-Adams, the Yoon-Nelson and the Wolborska models were used for modelling the breakthrough curve by nonlinear regression analysis. Simulation results and mathematical similarities between the models were discussed. This is the first study that used derived form of Dose–response model to analyse the inflection points of the breakthrough curve and mass transfer during nine consecutive sorption-regeneration cycles of zinc ions on natural zeolite. Obtained peak shape rate profiles were analysed for all cycles. Optimal operation conditions were evaluated with respect to the inflection point, the model parameters, and the residence time.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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