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 Thiol–ene click reaction on cellulose sponge and its application for oil/water separation

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20147-20151 ◽  
Author(s):  
Zhenzhen Wu ◽  
Yingzhan Li ◽  
Linping Zhang ◽  
Yi Zhong ◽  
Hong Xu ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Click Reaction ◽  
Water Mixture ◽  
Water Separation ◽  
Cellulose Sponge ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
High Separation

Thiol–ene click reaction was employed to synthesize a flexible hydrophilic cellulose sponge. The sponge can be circular used in oil/water mixture (emulsion) separation and hold separation efficiency high separation efficiency.

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.

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.

scholarly journals Cellulosic Paper-Based Membrane for Oil-Water Separation Enabled by Papermaking and in-Situ Gelation

2021 ◽  
Author(s):  
Decheng Gao ◽  
Yucheng Feng ◽  
Xiao Zhang ◽  
Shuying Wu ◽  
Fei Yang
Keyword(s):  
Separation Efficiency ◽  
Scale Production ◽  
Wet Strength ◽  
Water Separation ◽  
Water Emulsion ◽  
In Situ Gelation ◽  
High Efficient ◽  
Oil Water Separation ◽  
Oil Water

Abstract While has obvious scientific significance, the oil-water separation membranes are argued at production and disuse, mainly ascribed to the complex processes and non-biodegradation. Papermaking has great potential in the field of oil/water separation. The pulp refining of papermaking can improve the properties of pulp to improve the properties of paper substrate, which play an important role in oil-water separation. Due to the separation process was conducted under water, the wet strength of paper-based membrane was improved by micro-dissolved and in-situ gelation. The strength, oil-water separation efficiency and flux of membranes were explored under different beating degrees and regenerated conditions. The separation for oil-water emulsion of membranes can keep more than 98.5%, and the flux can be adjusted by pulp refining and in-situ gelation. The membranes are expected to be a low-cost, high-efficient for oily wastewater purification. This work demonstrates a new idea for the development of oil-water separation and papermaking, which provides a feasible strategy for large scale production of fully biodegradable oil-water separation membrane.

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.

scholarly journals Dodecyl Mercaptan Functionalized Copper Mesh for Water Repellence and Oil-water Separation

2021 ◽  
Vol 18 (4) ◽  
pp. 887-899
Author(s):  
Yanling Tian ◽  
Jiekai Feng ◽  
Zexin Cai ◽  
Jiaqi Chao ◽  
Dawei Zhang ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Synthesis Process ◽  
Water Separation ◽  
Oil Water Separation ◽  
One Step ◽  
Oil Water ◽  
Water Repellence ◽  
Copper Mesh ◽  
Dodecyl Mercaptan

AbstractReckless discharge of industrial wastewater and domestic sewage as well as frequent leakage of crude oil have caused serious environmental problems and posed severe threat to human survival. Various nature inspired superhy-drophobic surfaces have been successfully applied in oily water remediation. However, further improvements are still urgently needed for practical application in terms of facile synthesis process and long-term durability towards harsh environment. Herein, we propose a simple one-step dodecyl mercaptan functionalization method to fabricate Super-hydrophobic-Superoleophilic Copper Mesh (SSCM). The prepared SSCM possesses excellent water repellence and oil affinity, enabling it to successfully separate various oil-water mixtures with high separation efficiency (e.g., > 99% for hexadecane-water mixture). The SSCM retains high separating ability when hot water and strong corrosive aqueous solutions are used to simulate oil-water mixtures, indicating remarkable chemical durability of the dodecyl mercaptan functionalized copper mesh. Additionally, the efficiency can be well maintained during 50 cycles of separation, and the water repellence is even stable after storage in air for 120 days, demonstrating the reusability and long-term stability of the SSCM. Furthermore, the functionalized mesh also shows good mechanical robustness towards abrasion by sandpaper, and oil-water separation efficiency of > 96% can be obtained after 10 cycles of abrasion. The reported one-step dodecyl mercaptan functionalization could be a simple method for increasing the water repellence of copper mesh, and thereby be a great candidate for treating large-scale oily wastewater in harsh environments.

Fabrication of cardanol-based superhydrophobic cotton fabric for highly effective oil-water separation

2021 ◽  
pp. 102820
Author(s):  
Jianwen Cheng ◽  
Qianqian Shang ◽  
Chengguo Liu ◽  
Lihong Hu ◽  
Caiying Bo ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Water Separation ◽  
Highly Effective ◽  
Oil Water Separation ◽  
Oil Water

Fabrication of cellulose nanofiber-deposited cellulose sponge as an oil-water separation membrane

2019 ◽  
Vol 224 ◽  
pp. 322-331 ◽  
Author(s):  
Abdul Halim ◽  
Yinchao Xu ◽  
Kuan-Hsuan Lin ◽  
Motoyoshi Kobayashi ◽  
Mikio Kajiyama ◽  
...  
Keyword(s):  
Cellulose Nanofiber ◽  
Water Separation ◽  
Cellulose Sponge ◽  
Separation Membrane ◽  
Oil Water Separation ◽  
Oil Water
Sign in / Sign up

Export Citation Format

Share Document