A facile synthesis of a highly stable superhydrophobic nanofibrous film for effective oil/water separation

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 82352-82358 ◽  
Author(s):  
Xian Kong ◽  
Junming Zhang ◽  
Xuepin Liao ◽  
Xin Huang ◽  
Bi Shi
Keyword(s):  
Oily Wastewater ◽  
Facile Synthesis ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

An oil/water separation film with excellent durability and stable recyclability is highly desired for the treatment of oil containing effluents, like industrial oily wastewater.

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.

scholarly journals 2D and 3D Bulk Materials for Environmental Remediation: Air Filtration and Oil/Water Separation

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5714
Author(s):  
Ha-Jin Lee ◽  
Won San Choi
Keyword(s):  
Future Research ◽  
Oily Wastewater ◽  
Air Filtration ◽  
Bulk Materials ◽  
Water Separation ◽  
Air Filters ◽  
Technical Problems ◽  
Oil Water Separation ◽  
Oil Water ◽  
2D And 3D

Air and water pollution pose an enormous threat to human health and ecosystems. In particular, particulate matter (PM) and oily wastewater can cause serious environmental and health concerns. Thus, controlling PM and oily wastewater has been a great challenge. Various techniques have been reported to effectively remove PM particles and purify oily wastewater. In this article, we provide a review of the recent advancements in air filtration and oil/water separation using two- and three-dimensional (2D and 3D) bulk materials. Our review covers the advantages, characteristics, limitations, and challenges of air filters and oil/water separators using 2D and 3D bulk materials. In each section, we present representative works in detail and describe the concepts, backgrounds, employed materials, fabrication methods, and characteristics of 2D and 3D bulk material-based air filters and oil/water separators. Finally, the challenges, technical problems, and future research directions are briefly discussed for each section.

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%.

Experiment Study of Demulsifier on the Oily Wastewater Treatment

2014 ◽  
Vol 945-949 ◽  
pp. 3475-3478
Author(s):  
Bao Jun Liu ◽  
Jing Cheng Shi ◽  
Li Ping Guo ◽  
Yin Peng Li
Keyword(s):  
Produced Water ◽  
Oily Wastewater ◽  
Experiment Study ◽  
Water Separation ◽  
Action Time ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oily Wastewater Treatment ◽  
Average Size ◽  
Selection Of

Adopts the method of adding demulsifiers into the oily wastewater to increase the droplets size to further improve the efficiency of oil-water separation, and puts forward the corresponding optimized indicators and methods of demulsifiers. The optimized selection of the demulsifiers and its additive dosage was carried out by indoor experiments based on the optimized indicators. Using artificial produced water to test the treatment effect of the optimized demulsifier at different action time. The experiments show that demulsifier S1 with additive dosage of 20mg/l can accordance with the requirements of the processing very well, and as the increase of action time, the average size of droplets increase and the amount of the droplets which under 1μm decrease.

scholarly journals Application of a triblock copolymer additive modified polyvinylidene fluoride membrane for effective oil/water separation

2018 ◽  
Vol 5 (5) ◽  
pp. 171979 ◽  
Author(s):  
S. S. Shen ◽  
K. P. Liu ◽  
J. J. Yang ◽  
Y. Li ◽  
R. B. Bai ◽  
...  
Keyword(s):  
Polyvinylidene Fluoride ◽  
Triblock Copolymer ◽  
Oily Wastewater ◽  
The Novel ◽  
Permeate Flux ◽  
Cleaning Efficiency ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil Water Separation ◽  
Oil Water

A hollow fibre membrane was fabricated by blending polyvinylidene fluoride (PVDF) with a triblock copolymer additive polymer that has both hydrophilic and oleophobic surface properties. The novel membrane was characterized and examined for oil/water separation under various system conditions, including different cross-flow rate, feed temperature, trans-membrane pressure, and its rejection and cleaning efficiency, etc. By applying the membrane into the filtration of synthesized oil/water emulsion, the membrane constantly achieved an oil rejection rate of above 99%, with a relatively constant permeate flux varied in the range of 68.9–59.0 l m −2  h −1 . More importantly, the fouling of the used membrane can be easily removed by simple water flushing. The membrane also demonstrated a wide adaptability for different types of real oily wastewater, even at very high feed oil concentration (approx. 115 000 mg l −1 in terms of chemical oxygen demand (COM)). Hence, the novel triblock copolymer additive-modified PVDF membrane can have a great prospect in the continuing effort to expand the engineering application of polymeric membranes for oily wastewater treatment.

scholarly journals Fabrication of PDMS@Fe3O4/MS Composite Materials and Its Application for Oil-Water Separation

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 115
Author(s):  
Jiaqi Wang ◽  
Zhenzhong Fan ◽  
Qingwang Liu ◽  
Qilei Tong ◽  
Biao Wang
Keyword(s):  
Magnetic Force ◽  
Oil Spills ◽  
Low Cost ◽  
Oily Wastewater ◽  
Water Separation ◽  
Simple Preparation ◽  
Oil Water Separation ◽  
Absorbing Material ◽  
Oil Water ◽  
Nano Fe3o4

The discharge of oily wastewater and oil spills at sea are the current difficulties in water pollution control. This problem often leads to terrible disasters. Therefore, the effective realization of oil-water separation is a very challenging problem. Superhydrophobic sponge is a promising oil-absorbing material. In this article, we reported a superhydrophobic sponge with nano-Fe3O4 for oil-water separation. The addition of nano-Fe3O4 allows the sponge to be recycled under the action of magnetic force. The sponge has the advantages of low cost, simple preparation and efficient oil-water separation. This kind of sponge is very worthy of promotion for the treatment of oily wastewater and marine oil spill accidents.

Facile synthesis of superhydrophobic ZIF-8/bismuth oxybromide photocatalyst aerogel for oil/water separation and hazardous pollutant degradation

2020 ◽  
Vol 10 (5) ◽  
pp. 1409-1419 ◽  
Author(s):  
Bo Ge ◽  
Hang Yang ◽  
Xiaochen Xu ◽  
Guina Ren ◽  
Xingchuan Zhao ◽  
...  
Keyword(s):  
Pollutant Degradation ◽  
Facile Synthesis ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Electrospinning nanofibers and nanomembranes for oil/water separation

2021 ◽  
Author(s):  
Xianhang Yan ◽  
Xiao Xiao ◽  
Christian Au ◽  
Shaurya Mathur ◽  
Linjun Huang ◽  
...  
Keyword(s):  
Oil Spills ◽  
Oil Pollution ◽  
Oily Wastewater ◽  
Nanofiber Membrane ◽  
Water Separation ◽  
Global Challenges ◽  
Oil Water Separation ◽  
Oil Water ◽  
Environmental Causes ◽  
Offshore Oil

Offshore oil spills, industrial oily wastewater, and domestic oil pollution are some of the most serious global challenges, leading environmental causes of morbidity and mortality. Nanofiber membrane materials manufactured via...

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