Superhydrophilic polyethersulfone (PES) membranes with high scale inhibition properties obtained through bionic mineralization and RTIPS

Efficient Metal Cutting Fluid Wastewater Separation of Polyacrylonitrile Ultrafiltration Membranes Enabled by Metal Ion Cross-Linking

“…Thus, a water molecule layer is readily formed on the surface, which would block the contact of the membrane and oils in wastewater. To date, various methods, including grafting hydrophilic polymeric brushes or functional groups, , blending with hydrophilic substances, or constructing bionic structures, have been developed. For example, zwitterionic poly­{[2-(methacryloyloxy)­ethyl]­dimethyl­(3-sulfopropyl)­ammonium hydroxide} (PDMAPS) was grafted onto a poly­(vinylidene fluoride) (PVDF) membrane by Zhu et al, and the obtained PDMAPS- graft -PVDF membranes show good hydrophilicity and excellent antifouling properties for oily wastewater separation.…”

Design of a mixed‐matrix polyether sulfone membrane with well self‐cleaning capability for oil/water separation

“…[11][12][13] Unfortunately, membrane contamination is exacerbated by the inherent hydrophobicity of the organics. 5,10,14,15 Several studies have been conducted to solve these problems by changing the properties of membrane materials.…”

“…By altering the surface and internal structures of conventional membrane materials, it becomes possible to achieve improved physical and chemical properties. 5,14,15 One key aspect is the introduction of a higher surface porosity to overcome the issue of low permeability in separation membranes, enabling rapid and efficient contaminant separation. [16][17][18] Meanwhile, the adjustment of the internal structure of traditional separation membranes helps to counterbalance the trade-off between pore size and selectivity.…”

“…19,20 The enhanced hydrophilicity facilitates the formation of a hydration layer on the membrane's surface, creating a barrier that reduces direct contact between oil and the separation membrane, thus minimizing the potential for contaminant adhesion. 15,21 However, the smooth top surface of the negatively charged membrane further reduces the possibility of oil adhesion and increases the number of times the membrane can be recycled, thus reducing the cost of use. 22 In contrast to conventional membrane production methods, reverse thermally induced separation (RTIPS) uses heat transfer as the main driving force for the phase separation.…”

A super-hydrophilic NH2-MIL-125 composite film with dopamine-modified graphene oxide is used for water treatment

“…The entire length of the coastline affected by the oil spill was 786.5 km (including the coastline of the islands), which impacted the local fisheries and the ecological environment. More and more people have recently paid attention to film-separation technology, 3 because of its advantages of good separation effect, average temperature, simple, and economical separation technology, [4][5][6] and its application in the treatment of water pollution. 7 Traditional polymer-film-treatment technology is simple to operate, environmentally friendly, low-cost, and shows good applications in water treatment.…”