Nanofiltration Ceramic Membranes as a Feasible Two-Pronged Approach toward Desalination and Lithium Recovery,Global Challenges

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Nanofiltration Ceramic Membranes as a Feasible Two-Pronged Approach toward Desalination and Lithium Recovery
Global Challenges ( IF 4.4 ) Pub Date : 2024-01-25 , DOI: 10.1002/gch2.202300151
Chin Ho Kirk ₁ , Chiang Yon Douglas Chong ₂ , Xingyang Wang ₁ , Jianguo Sun ₁ , Qi Zhao ₁ , John Wang _{1,

3}

Affiliation

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.

中文翻译：

纳滤陶瓷膜作为海水淡化和锂回收的双管齐下的可行方法

陶瓷膜正在水处理分离技术中占据中心地位。其中，陶瓷纳滤膜处于膜技术的前沿。使用陶瓷纳滤膜进行海水淡化是增加全球供水和解决水资源短缺的潜在应用。然而，虽然高制造成本对其大规模应用提出了挑战，但高价值分离应用可以帮助抵消总体成本。在这方面，陶瓷纳滤膜也可以作为从废海水中提取高价值锂的可行选择进行探索。为了确定纳滤陶瓷膜用于海水淡化和从海水中回收锂的潜力，必须彻底评估各种操作参数下的脱盐效率。具体而言，唐南排斥、空间排斥、zeta 电位和盐浓度之间的相互作用在确定脱盐效率中发挥着重要作用。然后提出了几种策略来指导陶瓷纳滤膜在海水淡化和锂回收方面的潜在实际应用。

更新日期：2024-01-25

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