A water solvent-assisted condensation polymerization strategy of superhydrophobic lignocellulosic fibers for efficient oil/water separation

2019 ◽  
Vol 7 (27) ◽  
pp. 16447-16457 ◽  
Author(s):  
Lei Kang ◽  
Jinpeng Li ◽  
Jinsong Zeng ◽  
Wenhua Gao ◽  
Jun Xu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Superhydrophobic Surfaces ◽  
Oily Wastewater ◽  
Condensation Polymerization ◽  
Water Separation ◽  
Lignocellulosic Fibers ◽  
Water Solvent ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oily Wastewater Treatment

Superhydrophobic surfaces have received increasing attention in a broad range of important fields including oily wastewater treatment and oil collection in spills accidents.

Superhydrophobic/superoleophilic magnetic polyurethane sponge for oil/water separation

RSC Advances ◽  
2015 ◽  
Vol 5 (84) ◽  
pp. 68293-68298 ◽  
Author(s):  
Shanhu Liu ◽  
Qingfeng Xu ◽  
Sanjay S. Latthe ◽  
Annaso B. Gurav ◽  
Ruimin Xing
Keyword(s):  
Wastewater Treatment ◽  
Oily Wastewater ◽  
Water Separation ◽  
Oil Water Separation ◽  
Polyurethane Sponge ◽  
Oil Water ◽  
Oily Wastewater Treatment

A magnetic PU sponge displays superhydrophobicity/superoleophilicity, and more favorably possesses magnetic responsiveness and superior stability against corrosive solutions, showing great potential in practical oily wastewater treatment.

scholarly journals Corrosion resistance for superwetting immiscible oil/water separation porous materials

RSC Advances ◽  
2019 ◽  
Vol 9 (23) ◽  
pp. 12854-12863 ◽  
Author(s):  
Wanting Rong ◽  
Haifeng Zhang ◽  
Yanjing Tuo ◽  
Weiping Chen ◽  
Xiaowei Liu
Keyword(s):  
Corrosion Resistance ◽  
Wastewater Treatment ◽  
Porous Materials ◽  
Oil Spill ◽  
Oily Wastewater ◽  
Water Separation ◽  
Excellent Corrosion Resistance ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oily Wastewater Treatment

Superwetting porous FZCF as immiscible oil/organic solvents separation material that possesses excellent corrosion resistance can be widely applied in many industrial fields such as oily wastewater treatment and marine oil spill accidents.

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 Synchronous oil/water separation and wastewater treatment on a copper-oxide-coated mesh

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17740-17745
Author(s):  
Yahua Liu ◽  
Peng Xu ◽  
Wenna Ge ◽  
Chenguang Lu ◽  
Yunlai Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Copper Oxide ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

An integrated multifunctional copper-oxide-coated mesh was designed via facile immersing and burning methods, which manifests synchronous oil/water separation and wastewater treatment.

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.

3D network super-hydrophobic hexafluorbisphenol A poly(aryl ether ketone) membrane prepared by one-step electrospraying

2020 ◽  
Vol 32 (10) ◽  
pp. 1094-1101
Author(s):  
Yongpeng Wang ◽  
Pengtao Yan ◽  
Xintong Huo ◽  
Mengzhu Liu ◽  
Haibo Zhang ◽  
...  
Keyword(s):  
Large Scale ◽  
Condensation Polymerization ◽  
Aryl Ether ◽  
Sliding Angle ◽  
Water Separation ◽  
3D Network ◽  
Oil Water Separation ◽  
Aryl Ether Ketone ◽  
Oil Water ◽  
Ether Ketone

Novel super-hydrophobic poly(aryl ether ketone) (PAEK) membranes have been firstly prepared by modifying ordinary PAEK into hexafluorbisphenol A-PAEK through traditional nucleophilic condensation polymerization and subsequently simple electrospraying technique. With the solution concentration increased, the micromorphology exhibited nanofibers, nanofiber with spindles, 3D network with microspheres embedded, microspheres and dense films, successively. The static water contact angle increased from 99° to 155°, while the sliding angle from 1.3° to 6.8° (±1°), in which the 3D network presented the strongest super-hydrophobicity. After 200 h of water flushing, the rough surface structure and super-hydrophobicity of the membranes were well retained. Moreover, the membrane exhibited wonderful self-cleaning property, oil/water separation property, and stability due to the hierarchical micro/nanostructures. This work provides a new route for the creation of super-hydrophobic high performance engineering plastic fabrics with the potential values in large-scale application of filtration, oil/water separation, and antifouling.

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%.

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.

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