Search results for "Brine valorization"

showing 4 items of 4 documents

Diffusion dialysis for the treatment of H2SO4-CuSO4 solutions from electroplating plants: Ions membrane transport characterization and modelling

2021

Diffusion dialysis (DD) is proposed to separate and recover mineral acids and transition metals from electroplating industry process waters promoting a circular approach of resources recovery. In this work, a DD module with two anionic membranes (Fumasep FAD and Neosepta AFN) are used for the separation of H2SO4 from Cu2+ containing solutions. The membrane performances with sole H2SO4 solutions (0.2–2 M) and sole CuSO4 solutions (0.8–1.1 M Cu2+) and with mixtures of H2SO4 (0.6 M) and CuSO4 (0.2–1.1 M Cu2+) as feed are studied. H2SO4 recovery efficiency decreases as the concentration of acid increases. For H2SO4 solutions, the water drag flux from the retentate to the diffusate prevails agai…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciWork (thermodynamics)Brine valorizationCircular economyEconomia circularDiffusionAigües residuals -- DepuracióAnalytical chemistryCopper electroplatingSulphuric acid recoveryFiltration and Separation02 engineering and technologyGalvanoplàstiaCopper electroplating Sulphuric acid recovery Brine valorization Circular economy Industrial wastewater treatment Diffusion dialysisAnalytical ChemistryIndustrial wastewater treatment:Enginyeria química [Àrees temàtiques de la UPC]020401 chemical engineering0204 chemical engineeringElectroplatingChemistryIndustrial wastewater treatmentMembrane transport021001 nanoscience & nanotechnologyElectroplatingMembraneSewage -- PurificationDiffusion dialysis0210 nano-technologyDialysis (biochemistry)Flux (metabolism)
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Valorization of seawater desalination brines through the integration of Eutectic Freeze Crystallization and Electrodialysis with Bipolar Membranes in…

2021

European policy encourages the adoption of sustainable systems that promote the efficient use and recovery of resources. Accordingly, this study proposes integrating two innovative technologies, including Eutectic Freeze Crystallization (EFC) and Electrodialysis with Bipolar Membranes (EDBM), for treating seawater desalination brines. Two experimental campaigns were conducted to assess the viability of this novel treatment chain. Using two lab-test rig units, the effect of various operating conditions on the outputs and general performance of both EFC and EDBM was evaluated. Firstly, results showed that EFC could manage seawater brines to (i) obtain pure sodium sulphate, and fresh water in …

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciCircular economy ZLD Brine management Brine valorization EFC EDBM Desalination brine
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Treatment of electroplating wastewater by combining membrane technologies and reactive precipitation process at pilot scale

2022

Industrial wastewater treatment Sulphuric acid recovery Brine valorization Advances membranes technologieMembrane distillationDiffusion dialysi
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Acid and alkaline production from multi-ionic brines via Electrodialysis with Bipolar Membranes

2022

In recent years, a great attention has grown towards the brine valorization through chemicals production and mineral recovery as an alternative to conventional disposal. Electrodialysis with Bipolar Membranes (EDBM) is an emerging process that can be used for the production of alkaline and acidic solutions from salt solutions. Within the SEArcularMINE project framework, the exploitation of saltworks bitterns (highly concentrated solutions generated during the sea-salt production process) is proposed for minerals recovery and NaOH and HCl solutions production. In this work, an EDBM unit, equipped with commercial ion exchange membranes, was tested for the first time in closed-loop mode with: …

Electro-membrane process brine valorization multi-ion solution ion-exchange membraneSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimici
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