A facile surface modification of a PVDF membrane via CaCO3 mineralization for efficient oil/water emulsion separation

2020 ◽  
Vol 44 (48) ◽  
pp. 20999-21006
Author(s):  
Junda Wu ◽  
Atian Xie ◽  
Jin Yang ◽  
Jiangdong Dai ◽  
Chunxiang Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Layer By Layer ◽  
Assembly Process ◽  
Water Separation ◽  
Water Emulsion ◽  
Pvdf Membrane ◽  
Inorganic Particles ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water

A facile modification of a PVDF membrane using CaCO3 inorganic particles via a layer-by-layer self-assembly process for efficient oil/water separation.

Hierarchical rough surfaces formed by LBL self-assembly for oil–water separation

2014 ◽  
Vol 2 (30) ◽  
pp. 11830-11838 ◽  
Author(s):  
Xiaoyu Li ◽  
Dan Hu ◽  
Kun Huang ◽  
Chuanfang Yang
Keyword(s):  
Stainless Steel ◽  
Removal Efficiency ◽  
Self Assembly ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

Stainless steel felt modified with hierarchically structured coatings and hydrophobicity can achieve a removal efficiency of greater than 99% for oil-in-water emulsion separation.

A cellulose sponge with robust superhydrophilicity and under-water superoleophobicity for highly effective oil/water separation

2015 ◽  
Vol 17 (5) ◽  
pp. 3093-3099 ◽  
Author(s):  
Gang Wang ◽  
Yi He ◽  
He Wang ◽  
Lin Zhang ◽  
Quanyao Yu ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Water Separation ◽  
Water Emulsion ◽  
Cellulose Sponge ◽  
Highly Effective ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water

A cellulose sponge with properties of superhydrophilicity and under-water superoleophobicity gives 99.94% separation efficiency in oil–water emulsion separation.

scholarly journals Mussel-Inspired Fabrication of PDA@PAN Electrospun Nanofibrous Membrane for Oil-in-Water Emulsion Separation

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3434
Author(s):  
Haodong Zhao ◽  
Yali He ◽  
Zhihua Wang ◽  
Yanbao Zhao ◽  
Lei Sun
Keyword(s):  
Separation Efficiency ◽  
Low Cost ◽  
Nanofibrous Membrane ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

Emulsified oily wastewater threatens human health seriously, and traditional technologies are unable to separate emulsion containing small sized oil droplets. Currently, oil–water emulsions are usually separated by special wettability membranes, and researchers are devoted to developing membranes with excellent antifouling performance and high permeability. Herein, a novel, simple and low-cost method has been proposed for the separation of emulsion containing surfactants. Polyacrylonitrile (PAN) nanofibers were prepared via electrospinning and then coated by polydopamine (PDA) by using self-polymerization reactions in aqueous solutions. The morphology, structure and oil-in-water emulsion separation properties of the as-prepared PDA@PAN nanofibrous membrane were tested. The results show that PDA@PAN nanofibrous membrane has superhydrophilicity and almost no adhesion to crude oil in water, which exhibits excellent oil–water separation ability. The permeability and separation efficiency of n-hexane/water emulsion are up to 1570 Lm−2 h−1 bar−1 and 96.1%, respectively. Furthermore, after 10 cycles of separation, the permeability and separation efficiency values do not decrease significantly, indicating its good recycling performance. This research develops a new method for preparing oil–water separation membrane, which can be used for efficient oil-in-water emulsion separation.

Recent advances in biomimetic thin membranes applied in emulsified oil/water separation

2016 ◽  
Vol 4 (41) ◽  
pp. 15749-15770 ◽  
Author(s):  
Yubing Peng ◽  
Zhiguang Guo
Keyword(s):  
Water Separation ◽  
Water Emulsion ◽  
Biomimetic Surface ◽  
Filtration Membranes ◽  
Emulsified Oil ◽  
Filtration Membrane ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Thin Membranes ◽  
Oil Water

This review provides a brief introduction to filtration membranes with superwetting surfaces applied to oil/water emulsion separation and includes comprehensive discussions about the fabrication methods of each filtration membrane, which is expected to advance the development of biomimetic surface membranes for oil/water emulsion separation.

A facile approach to silica-modified polysulfone microfiltration membranes for oil-in-water emulsion separation

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41323-41330 ◽  
Author(s):  
Qiao-Ling Gao ◽  
Fei Fang ◽  
Chen Chen ◽  
Xue-Yan Zhu ◽  
Jing Li ◽  
...  
Keyword(s):  
Filtration Efficiency ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Microfiltration Membranes ◽  
Oil Water ◽  
Underwater Superoleophobicity ◽  
Oil In Water Emulsion

A facile strategy to prepare silica-modified membranes with superhydrophilicity and underwater superoleophobicity was developed. These hybrid membranes can be applied in oil/water separation with high filtration efficiency and pressure endurance.

Conductive superhydrophobic cotton fabrics via layer-by-layer assembly of carbon nanotubes for oil-water separation and human motion detection

2019 ◽  
Vol 253 ◽  
pp. 230-233 ◽  
Author(s):  
Longzhu Zheng ◽  
Xiaojing Su ◽  
Xuejun Lai ◽  
Wanjuan Chen ◽  
Hongqiang Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Motion Detection ◽  
Cotton Fabrics ◽  
Human Motion ◽  
Layer By Layer ◽  
Water Separation ◽  
Human Motion Detection ◽  
Oil Water Separation ◽  
Oil Water ◽  
Layer Assembly

Two-dimensional MOF-based Liquid Marbles: Surface Energy Calculations and Efficient Oil-Water Separation Using a ZIF-9-III@PVDF Membrane

2021 ◽  
Author(s):  
Jayaramulu Kolleboyina ◽  
HANEESH SAINI ◽  
Parashuram Kallem ◽  
Eva Otyepková ◽  
Florian Geyer ◽  
...  
Keyword(s):  
Surface Energy ◽  
Two Dimensional ◽  
Water Separation ◽  
Pvdf Membrane ◽  
Energy Calculations ◽  
Liquid Marbles ◽  
Droplet Form ◽  
Oil Water Separation ◽  
Oil Water ◽  
Aqueous Droplet

Superhydrophobic MOF-nanosheets assembled on the outside of an aqueous droplet form ‘liquid marbles’. A facile mechanochemical-based synthesis followed by ultrasonication was used to prepare two-dimensional superhydrophobic-oleophilic MOF nanosheets of a...

Chelation Assembly of Cellulose Nanohydrogel onto Flower-Like Structured Foam with Underwater Superoleophobicity for Highly Efficient Oil–Water Separation

NANO ◽  
2021 ◽  
pp. 2150061
Author(s):  
Yuntian Wan ◽  
Xue Lin ◽  
Zhongshuai Chang ◽  
Xiaohui Dai ◽  
Jiangdong Dai
Keyword(s):  
Water Flux ◽  
Separation Performance ◽  
Layer By Layer ◽  
Potential Candidate ◽  
Oily Wastewater ◽  
Water Separation ◽  
Composite Foam ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity

Currently, with the increasingly serious pollution problem of oily wastewater, it is urgent to develop advanced materials and methods. In this work, a Fe(III)-CMC@Ni(OH)2@Ni composite foam with superhydrophilic and underwater superoleophobicity was fabricated by an in situ growth of flower-like Ni(OH)2 nanoparticles and chelated assembly of Fe(III)-CMC nanohydrogel via a layer-by-layer self assembly using Fe[Formula: see text] ion and carboxymethyl cellulose (CMC). The composite foam could separate various oil/water mixtures and exhibited excellent efficiency over 99%. This foam possessed ultrahigh water flux (220000[Formula: see text]L m[Formula: see text] h[Formula: see text] and better resistant to penetration pressure (1.3[Formula: see text]kPa). After 30 cycles, the oil–water separation performance reduced only 0.5%, but the foam structure was still stable that guarantees a better lifetime. Besides, this composite foam showed anti-fouling, unique durability and excellent corrosion resistance performance. Taking into account all good properties, Fe(III)-CMC@Ni(OH)2@Ni composite foam was expected to be a potential candidate for responding to all kinds of complex oily wastewater conditions.

Synthesis of graphene oxide–SiO2 coated mesh film and its properties on oil–water separation and antibacterial activity

2015 ◽  
Vol 73 (5) ◽  
pp. 1098-1103 ◽  
Author(s):  
Jun Liu ◽  
Wanxia He ◽  
Peng Li ◽  
Siying Xia ◽  
Xiaomeng Lü ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Environmental Stability ◽  
Layer By Layer ◽  
Oily Wastewater ◽  
Separation System ◽  
Water Separation ◽  
Silica Coatings ◽  
Oil Water Separation ◽  
Oil Water ◽  
Harsh Conditions

Oil–water separation has recently become a worldwide challenge due to the frequent occurrence of oil spill accidents and increasing industrial oily wastewater. In this work, the multifunctional mesh films with underwater oleophobicity and certain bacteriostatic effects are prepared by layer-by-layer assembly of graphene oxide-silica coatings on stainless steel mesh. The mesh film exhibits excellent environmental stability under a series of harsh conditions. The new, facile and reusable separation system is proposed to achieve deep treatment of oily wastewater, and the oil collection rate can reach over 99%.

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