Hybrid membrane distillation and ion exchange process for resources recovery from mining wastewater

This work aims to achieve a process intensification through the hybridization of direct contact membrane distillation (DCMD) and ion exchange (IX) to increase resource recovery (water, H2SO4, Copper (Cu), Nickel (Ni), and Cobalt (Co)) from a gold mining wastewater. An increase in maximum recovery ra...

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Bibliographic Details
Published in:Desalination 2024-03, Vol.573, p.117224, Article 117224
Main Authors: Lebron, Yuri Abner Rocha, Silva, Ana Flávia Rezende, Moreira, Victor Rezende, Santos, Lucilaine Valéria de Souza, Amaral, Míriam Cristina Santos
Format: Article
Language:English
Subjects:
Gold mining
Process intensification
Wastewater treatment
Wastewater valorization
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Summary:This work aims to achieve a process intensification through the hybridization of direct contact membrane distillation (DCMD) and ion exchange (IX) to increase resource recovery (water, H2SO4, Copper (Cu), Nickel (Ni), and Cobalt (Co)) from a gold mining wastewater. An increase in maximum recovery rate was achieved by the DCMD in the hybrid configurations – from 34 to 52 %. Recovery of Cu, Ni and Co is best achieved by NH4OH (4 mol/L), however with considerable carryover. Conversely, selective recovery can be achieved by different eluting agents H2SO4 0.1 mol/L to recover Co (~80 %), H2SO4 1 mol/L to recover Ni (~47 %), and NH4OH 4 mol/L to recover Cu (~26 %), with a lower carryover of other ions (
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2023.117224