Nanofiltration Ceramic Membranes as a Feasible Two‐Pronged Approach toward Desalination and Lithium Recovery

Autor: Chin Ho Kirk, Chiang Yon Douglas Chong, Xingyang Wang, Jianguo Sun, Qi Zhao, John Wang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Global Challenges, Vol 8, Iss 2, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2056-6646
DOI: 10.1002/gch2.202300151
Popis: Abstract Ceramic membranes are taking center stage for separation technologies in water treatment. Among them, ceramic nanofiltration membranes are at the forefront of membrane technologies. The desalination of seawater using ceramic nanofiltration membranes is a potential application toward increasing the global water supply and tackling water scarcity. However, while the high fabrication cost poses a challenge to their large‐scale applications, high‐value separation applications can help to offset the overall cost. In this regard, ceramic nanofiltration membranes can also be explored as a viable option for high‐value lithium extraction from the waste seawater brine. In order to determine the potential of nanofiltration ceramic membranes for desalination and lithium recovery from seawater, the current efficiency of salt rejection across various operation parameters must be thoroughly evaluated. Specifically, the interactions between the Donnan exclusion, steric exclusion, zeta potential, and salt concentration play an important role in determining the salt rejection efficiency. Several strategies are then proposed to guide ceramic nanofiltration membranes toward potentially practical applications regarding desalination and lithium recovery.
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