Ampholytic Chitosan/Alginate Composite Nanofibrous Membranes with Super Anti-Crude Oil-Fouling Behavior and Multifunctional Oil/Water Separation Properties

2019 ◽  
Vol 7 (18) ◽  
pp. 15463-15470 ◽  
Author(s):  
Weikang Zhou ◽  
Yan Fang ◽  
Peiyuan Li ◽  
Liyu Yan ◽  
Xianmou Fan ◽  
...  
Keyword(s):  
Crude Oil ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanofibrous Membranes ◽  
Oil Fouling

Layer-by-layer construction of CS-CNCs multilayer modified mesh with robust anti-crude-oil-fouling performance for efficient oil/water separation

2021 ◽  
Vol 639 ◽  
pp. 119776
Author(s):  
Yuqi Wang ◽  
Yi He ◽  
Hongjie Li ◽  
Jing Yu ◽  
Liyun Zhang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Layer By Layer ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil Fouling

Fabrication of highly durable and robust superhydrophobic-superoleophilic nanofibrous membranes based on a fluorine-free system for efficient oil/water separation

2019 ◽  
Vol 570-571 ◽  
pp. 303-313 ◽  
Author(s):  
Wenjing Ma ◽  
Mengjie Zhang ◽  
Zhongche Liu ◽  
Mengmeng Kang ◽  
Chaobo Huang ◽  
...  
Keyword(s):  
Water Separation ◽  
Free System ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanofibrous Membranes

scholarly journals Refinery processed water treatment via the low energy Direct Contact Membrane Distillation (DCMD)

2019 ◽  
Vol 74 ◽  
pp. 3 ◽  
Author(s):  
Khadije El Kadi ◽  
Isam Janajreh ◽  
Raed Hashaikeh ◽  
Rizwan Ahmed
Keyword(s):  
Water Treatment ◽  
Pore Size ◽  
Mass Flux ◽  
Thermal Efficiency ◽  
Membrane Distillation ◽  
Low Energy ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil Fouling

The amount of refinery water discharged to the environment from oil industry has increased vigorously in current times. Recent research has been focusing on the use of membrane technology for the refinery processed water treatment. Membrane Distillation (MD) is an emerging technology that has been highly marked by its low-energy requirement and high desalination efficiency. However, conventional MD membranes (i.e. PVDF) are not feasible for oil-water separation processes. That is due to the oleo-philic property of the membrane and thus, causes membrane fouling and halts the production of mass flux. An anti-oil-fouling membrane is essential for a successful oil-water separation by MD. Underwater-oleophobic as well as omniphobic are two different approaches in fabricating such membranes. The former approach is based on the asymmetric surface wettability, whereas the latter is attributed to the surface structure that is characterized by having a very large contact angle for all liquids. However, such composite membranes are characterized by their lower porosity, smaller pore size, but with unique surface slippage, in comparable with the conventional PVDF membranes. As such, in this work, high fidelity numerical simulation of DCMD is performed using non-isothermal Computational Fluid Dynamics (CFD) validated model in order to assess the role of the anti-oil-fouling membrane properties on the performance of the DCMD. Results are presented in terms of temperature polarization coefficient, mass flux, latent heat flux, and thermal efficiency. Results show the compromising effect of membrane porosity to 45% reduces the mass flux and thermal efficiency respectively by 68% and 40%, and reduction of pore size to the half (i.e. 50 nm) can cause a reduction by 50.6% in mass flux and 24.18% in thermal efficiency compared to the baseline (i.e. 100 nm). On the other hand, the omniphobic slippage effect leads to a noticeable gain of 16% in DCMD mass flux with slight gain in thermal efficiency. This can maximize mass flux and thermal efficiency to be as much as 50.3 kg/m2 h and 69%, respectively.

Self-cleaning poly(L-dopa)-based coatings with exceptional underwater oil repellency for crude oil/water separation

2020 ◽  
Vol 510 ◽  
pp. 145402 ◽  
Author(s):  
Hao Zhang ◽  
Li Yu ◽  
Xiaohong Ma ◽  
Yapei Peng ◽  
Junqing Hu ◽  
...  
Keyword(s):  
Crude Oil ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning

Bio-Inspired Anti-Oil-Fouling Chitosan-Coated Mesh for Oil/Water Separation Suitable for Broad pH Range and Hyper-Saline Environments

2013 ◽  
Vol 5 (22) ◽  
pp. 11971-11976 ◽  
Author(s):  
Shiyan Zhang ◽  
Fei Lu ◽  
Lei Tao ◽  
Na Liu ◽  
Changrui Gao ◽  
...  
Keyword(s):  
Water Separation ◽  
Saline Environments ◽  
Oil Water Separation ◽  
Oil Water ◽  
Ph Range ◽  
Oil Fouling

scholarly journals Preparation and Application in Crude Oil-Water Separation of Clay-Based Membranes

2021 ◽  
Vol 24 (4) ◽  
Author(s):  
Mykaell Yan Muniz de Souza ◽  
Hélio de Lucena Lira ◽  
Lisiane Navarro de Lima Santana ◽  
Miguel Angel Rodríguez
Keyword(s):  
Crude Oil ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

A facile and mild strategy to fabricate an underwater superoleophobic and underoil superhydrophobic mesh with outstanding anti-viscous oil-fouling properties for switchable high viscosity oil/water separation

2019 ◽  
Vol 21 (18) ◽  
pp. 5080-5089 ◽  
Author(s):  
Jin Zhang ◽  
Lu Zhang ◽  
Jianguo Zhao ◽  
Wenshan Qu ◽  
Zhenxing Wang
Keyword(s):  
High Viscosity ◽  
Water Separation ◽  
Viscous Oil ◽  
Oil Water Separation ◽  
Oil Water ◽  
High Viscosity Oil ◽  
Oil Fouling

Underwater superoleophobic and underoil superhydrophobic mesh has been prepared for switchable high viscosity oil/water separation.

scholarly journals Efficient Oil/Water Separation Membrane Derived from Super-Flexible and Superhydrophilic Core–Shell Organic/Inorganic Nanofibrous Architectures

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 974 ◽  
Author(s):  
Zhi Liu ◽  
Detao Qin ◽  
Jianghui Zhao ◽  
Quan Feng ◽  
Zhengtao Li ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Scale Up ◽  
Core Shell ◽  
Water Separation ◽  
Membrane Performance ◽  
Novel Approach ◽  
Separation Membrane ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanofibrous Membranes

To address the worldwide oil and water separation issue, a novel approach was inspired by natural phenomena to synthesize superhydrophilic and underwater superoleophobic organic/inorganic nanofibrous membranes via a scale up fabrication approach. The synthesized membranes possess a delicate organic core of PVDF-HFP and an inorganic shell of a CuO nanosheet structure, which endows super-flexible properties owing to the merits of PVDF-HFP backbones, and superhydrophilic functions contributed by the extremely rough surface of a CuO nanosheet anchored on flexible PVDF-HFP. Such an organic core and inorganic shell architecture not only functionalizes membrane performance in terms of antifouling, high flux, and low energy consumption, but also extends the lifespan by enhancing its mechanical strength and alkaline resistance to broaden its applicability. The resultant membrane exhibits good oil/water separation efficiency higher than 99.7%, as well as excellent anti-fouling properties for various oil/water mixtures. Considering the intrinsic structural innovation and its integrated advantages, this core–shell nanofibrous membrane is believed to be promising for oil/water separation, and this facile approach is also easy for scaled up manufacturing of functional organic/inorganic nanofibrous membranes with insightful benefits for industrial wastewater treatment, sensors, energy production, and many other related areas.

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