Increasing attention is nowadays paid to the management and valorisation of industrial waste brines aiming also at the recovery of raw materials. Magnesium has been listed as a Critical Raw Material by EU, prompting researchers to investigate novel routes for its recovery. Within this framework, a novel Crystallizer with Ion Exchange Membrane (CrIEM), is proposed as an innovative way to recover magnesium from industrial waste brines exploiting low-cost alkaline reactants. In the present work, a novel mathematical model of the CrIEM process is proposed to provide a useful tool for its design in different working conditions. Batch and feed & bleed continuous configurations have been investigated taking into account: (i) the variation of the alkaline and brine concentration in their own collection tanks over time and (ii) the spatial mono-dimensional (1D) steady-state description of the main phenomena that occur inside the CrIEM. Original experimental data, from ad-hoc laboratory tests, and literature information were used to validate the proposed model both in the batch and continuous feed & bleed configuration. A good agreement between model predictions and experimental/literature data was found for both cases, thus proving the reliability of the proposed model for the design of the CrIEM reactor.

F. Vassallo, C. (2021). A simulation tool for ion exchange membrane crystallization of magnesium hydroxide from waste brine. CHEMICAL ENGINEERING RESEARCH & DESIGN, 173, 193-205 [10.1016/j.cherd.2021.07.008].

A simulation tool for ion exchange membrane crystallization of magnesium hydroxide from waste brine

F. Vassallo;C. Morgante;G. Battaglia;D. La Corte;A. Cipollina;A. Tamburini;G. Micale
2021-01-01

Abstract

Increasing attention is nowadays paid to the management and valorisation of industrial waste brines aiming also at the recovery of raw materials. Magnesium has been listed as a Critical Raw Material by EU, prompting researchers to investigate novel routes for its recovery. Within this framework, a novel Crystallizer with Ion Exchange Membrane (CrIEM), is proposed as an innovative way to recover magnesium from industrial waste brines exploiting low-cost alkaline reactants. In the present work, a novel mathematical model of the CrIEM process is proposed to provide a useful tool for its design in different working conditions. Batch and feed & bleed continuous configurations have been investigated taking into account: (i) the variation of the alkaline and brine concentration in their own collection tanks over time and (ii) the spatial mono-dimensional (1D) steady-state description of the main phenomena that occur inside the CrIEM. Original experimental data, from ad-hoc laboratory tests, and literature information were used to validate the proposed model both in the batch and continuous feed & bleed configuration. A good agreement between model predictions and experimental/literature data was found for both cases, thus proving the reliability of the proposed model for the design of the CrIEM reactor.
2021
Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimici
F. Vassallo, C. (2021). A simulation tool for ion exchange membrane crystallization of magnesium hydroxide from waste brine. CHEMICAL ENGINEERING RESEARCH & DESIGN, 173, 193-205 [10.1016/j.cherd.2021.07.008].
File in questo prodotto:
File Dimensione Formato  
Vassallo_etal_CrIEM_Modelling.pdf

Solo gestori archvio

Tipologia: Versione Editoriale
Dimensione 3.37 MB
Formato Adobe PDF
3.37 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Vassallo_etal_CrIEM_Modelling_Pre_print.pdf

accesso aperto

Tipologia: Pre-print
Dimensione 1.76 MB
Formato Adobe PDF
1.76 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/515566
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 12
social impact