pH-Induced switches of the oil- and water-selectivity of crosslinked polymeric membranes for gravity-driven oil–water separation

2016 ◽  
Vol 4 (35) ◽  
pp. 13543-13548 ◽  
Author(s):  
Ching-Ting Liu ◽  
Ying-Ling Liu
Keyword(s):  
Polymeric Membranes ◽  
Water Separation ◽  
Oil Water Separation ◽  
Gravity Driven ◽  
Oil Water

A membrane with pH-induced switchable oil- and water-selectivity for gravity-driven continuous oil–water separation.

scholarly journals Gravity-Driven Separation of Oil/Water Mixture by Porous Ceramic Membranes with Desired Surface Wettability

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 457
Author(s):  
Chunlei Ren ◽  
Wufeng Chen ◽  
Chusheng Chen ◽  
Louis Winnubst ◽  
Lifeng Yan
Keyword(s):  
Porous Ceramic ◽  
Ceramic Membranes ◽  
Separation Performance ◽  
Water Mixture ◽  
Alumina Membrane ◽  
Water Separation ◽  
Alumina Membranes ◽  
Oil Water Separation ◽  
Gravity Driven ◽  
Oil Water

Porous Al2O3 membranes were prepared through a phase-inversion tape casting/sintering method. The alumina membranes were embedded with finger-like pores perpendicular to the membrane surface. Bare alumina membranes are naturally hydrophilic and underwater oleophobic, while fluoroalkylsilane (FAS)-grafted membranes are hydrophobic and oleophilic. The coupling of FAS molecules on alumina surfaces was confirmed by Thermogravimetric Analysis and X-ray Photoelectron Spectroscopy measurements. The hydrophobic membranes exhibited desired thermal stability and were super durable when exposed to air. Both membranes can be used for gravity-driven oil/water separation, which is highly cost-effective. The as-calculated separation efficiency (R) was above 99% for the FAS-grafted alumina membrane. Due to the excellent oil/water separation performance and good chemical stability, the porous ceramic membranes display potential for practical applications.

Reusable, salt-tolerant and superhydrophilic cellulose hydrogel-coated mesh for efficient gravity-driven oil/water separation

2018 ◽  
Vol 338 ◽  
pp. 271-277 ◽  
Author(s):  
Chenghong Ao ◽  
Rui Hu ◽  
Jiangqi Zhao ◽  
Xiaofang Zhang ◽  
Qingye Li ◽  
...  
Keyword(s):  
Salt Tolerant ◽  
Water Separation ◽  
Cellulose Hydrogel ◽  
Oil Water Separation ◽  
Gravity Driven ◽  
Oil Water

Superhydrophobic meshes that can repel hot water and strong corrosive liquids used for efficient gravity-driven oil/water separation

Nanoscale ◽  
2016 ◽  
Vol 8 (14) ◽  
pp. 7638-7645 ◽  
Author(s):  
Jian Li ◽  
Ruimei Kang ◽  
Xiaohua Tang ◽  
Houde She ◽  
Yaoxia Yang ◽  
...  
Keyword(s):  
Hot Water ◽  
Water Separation ◽  
Oil Water Separation ◽  
Gravity Driven ◽  
Oil Water
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