Fabrication of ZnO/PDA/GO composite membrane for high efficiency oil–water separation

Ding, Jijun; Mao, Zhicheng; Chen, Hạixia; Zhang, Xin; Fu, Haiwei

doi:10.1007/s00339-023-06654-6

Cited by 7 publications

(1 citation statement)

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“…The causes of water scarcity are complex and varied, including population growth, climate change, over-abstraction of groundwater, water pollution, and ecosystem destruction. Among them, pollution caused by oily wastewater has a very significant impact on water resources [3]. The effects of this pollution not only ripple through aquatic ecosystems, but also pose a huge challenge to the safety of drinking water.…”

Section: Introductionmentioning

confidence: 99%

Mussel-Inspired Construction of Silica-Decorated Ceramic Membranes for Oil–Water Separation

Zhou,

Chang,

et al. 2024

Ceramics

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In recent years, ceramic membranes have received widespread focus in the area of liquid separation because of their high permeability, strong hydrophilicity, and good chemical stability. However, in practical applications, the surface of ceramic membranes is prone to be contaminated, which degrades the permeation flux of ceramic membranes during the separation process. Inspired by mussels, we imitate the biomimetic mineralization process to prepare a ceramic membrane of nano–silica on the pre-modified zirconia surface by co-deposited polydopamine/polyethyleneimine. The modified ceramic membranes were utilized for the purpose of oil–water separation. Separation performance has been tested using a disc ceramic membrane dynamic filtration device. The outcomes revealed an enhanced permeability in the modified membrane, measuring as 159 L m−2 h−1 bar−1, surpassing the separation flux of the unmodified membrane, which was 104 L m−2 h−1 bar−1. The permeation performance of the modified membrane was increased to 1.5 times. Modified ceramic membranes are highly resistant to fouling. From the beginning to the end of separation process, the oil rejection rate of the modified ceramic membrane is always higher than 99%. After a 2 h oil–water separation test run, modified ceramic membrane permeate flux can be restored to 91% after cleaning. It has an enormous capacity for application in the area of oil–water separation.

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Section: Introductionmentioning

confidence: 99%