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Long-Lasting Filtration of Oily Water by anti-fouling Underwater Oleophobic Sand Particles

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Journal of Bionic Engineering 2024年第2期21卷 913-923页

作者： Xingyu Liu Junxu Chen Rui Wang Yifan Su Zhangheng Zhou Zezhong Hou Zhuoran Li Junhao Zhao Weicai Shi Xinquan Yu Zhaopeng Yu Youfa Zhang State Key Laboratory of Advanced Technology for Float Glass CNBM Research Institute for Advanced Glass Materials Group Co.LtdBengbu233000China Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing211189China Research Institute of Petroleum Engineering Technology of Jiangsu Oilfield Yangzhou225009China Kunshan Industrial Technology Research Institute Kunshan215300SuzhouChina School of Automotive Engineering Changshu Institute of TechnologyChangshu215500SuzhouChina

The produced water from the oilfield was purified with filter material and then injected back into the *** serpentine filter material was easy to harden with the increase in filtration amount,which affected the water quality.A superhydrophilic/underwater oleophobic serpentine filter material was successfully prepared by a simple method of coating modification,which exhibited long-lasting filtration of oily water,good filtration and anti-fouling properties,and resistance to *** film-forming material of the superhydrophilic/underwater oleophobic coating was composed of SiO_(2) particles with small size,which could completely and evenly cover the filter *** weight loss was only 7.6%after mechanical stirring for 90 *** with the original filter material,the superhydrophilic/underwater oleophobic serpentine filter material showed a better anti-fouling ability and resistance to *** filtration of crude oil emulsion and oil slick sewage showed a better backwashing *** 35 cycles of continuous filtration of suspended solids in wastewater,the backwashing rate reached 78.4%.The results provided an effective method for the filtration of oily wastewater in the oilfield.

关键词： Serpentine Underwater oleophobic Water immersion resistance anti-fouling Hardening resistance

Fabrication of magnetically responsive anti-fouling and easy-cleaning nanofiber membrane and its application for efficient oil-water emulsion separation

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Chinese Journal of Chemical Engineering 2022年第1期35卷 286-293页

作者： Yajie Wang Zhiwei Guo Yujie Yang Yanxiang Li Qingchun Guo Peilin Cui Wangliang Li CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Hebei Lansheng Biotech Co. LtdShijiazhuang 052200China International Medical Service Beijing Tiantan Hospital Affiliated to Capital Medical UniversityChina

The magnetically responsive anti-fouling nanofiber membrane(MRANM)was fabricated for efficient oilwater emulsion separation,which could be cleaned using oscillating magnetic *** was prepared by grafting superparamagnetic Fe_(3)O_(4) nanoparticles onto the surface of electrospun polyacrylonitrile nanofiber membrane(PANM).Compared with PANM,the water contact angle of MRANM decreased from 104°to 0°,indicating that the hydrophilicity of the membrane was significantly *** the emulsions of hexadecane,octane and rapeseed oil,the separation efficiency was 98.04%,96.59%and 92.67%,*** the treatments in oscillating magnetic field,the separation efficiency kept above 95%after 8 times recycling,which indicated that the MRANM had good regenerability and *** as-fabricated membrane with magnetic responsiveness facilitated an effective method for solving the membrane fouling problem during practical applications of separation high viscosity oil-water emulsion.

关键词： Superparamagnetic Nanofiber membrane anti-fouling Oil-water emulsion Regeneration

Slippery Surface with Petal-like Structure for Protecting Al Alloy: anti-corrosion, anti-fouling and anti-icing

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Journal of Bionic Engineering 2022年第1期19卷 83-91页

作者： Junfei Huang Jiajie Kang Jiaxu Zhang Jinxia Huang Zhiguang Guo School of Engineering and Technology China University of GeosciencesBeijing100083China Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei UniversityWuhan430062China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China Zhengzhou Institute China University of Geosciences(Beijing)Zhengzhou451283China

The harsh working environment affects the performance and usage life of Al and its alloys,thus limiting their *** recent years,Slippery Liquid-infused Porous Surface(SLIPS)has attracted much attention due to excellent anti-corrosion,anti-fouling and anti-icing *** may be an effective way to improve the properties of Al and its ***,the SLIPS with petal-like structure was constructed on the Al alloy via simple hydrothermal reaction,Stearic Acid(STA)modification and lubricant injection.A variety of droplets(including oil-in-water emulsions)can slide on the SLIPS at a low angle,even the Sliding Angle(SA)of the water droplet is only 3°.Furthermore,the SLIPS exhibits outstanding mechanical and chemical *** can maintain fine oil-locking ability under high shearing force and keep slippery stability after immersion in acid/alkaline *** addition,the SLIPS possesses excellent anti-corrosion,anti-fouling and anti-icing properties,which provides a new way to promote the application of Al and its ***,the SLIPS is expected to be an effective way to improve the properties of Al and its alloys,as well as play a role in anti-fouling and self-cleaning in construction,shipbuilding and automotive manufacturing industries,thereby expanding the practical application of Al and its alloys.

关键词： Slippery surface Al alloy anti-corrosion anti-fouling anti-icing

A hyperbranched polymer-based water-resistant adhesive:Durable underwater adhesion and primer for anchoring anti-fouling hydrogel coating

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Science China(Technological Sciences) 2022年第1期65卷 201-213页

作者： ZHANG YaHan CUI ChunYan SUN YaGe ZHANG XiaoPing YANG Rong YANG JianHai XIE Fei LIU WenGuang School of Materials Science and Engineering Tianjin UniversityTianjin 300350China Shandong Zhushi Pharmaceutical Group Co. Lid.Heze 274300China

Direct deployment of gluing and achieving durable robust adhesion in water is challenging due to difficulty in repelling interface *** work reports a novel hyperbranched polymer-based water-resistant adhesive(HBPBA)based on Michael addition reaction of multi-vinyl monomers with dopamine and 3-aminophenylboronic *** encountering water,the HBPBA forms coacervates whose hydrophobic chains aggregate to displace interface water,and meanwhile the catechols exposing outwards contribute to underwater *** HBPBA can strongly glue diverse substrates including PTFE,PE,PET,ceramic,Ti and stainless *** HBPBA can maintain stable adhesion in different environments,such as tap water,simulated sea water,PBS,and a wide range of pH solutions(pH 2 to 10)for 3 months,supposedly due to the complexation of catechol with boronic ***,HBPBA film can be bonded to the titanium surface as a primer,which firmly anchors the antifouling PNAGAPCBAA hydrogel coating through copolymerization of remaining double bonds in HBPBA and NAGA plus *** PNAGA-PCBAA hydrogel-modified titanium is biocompatible and shows outstanding antifouling ability both in vitro and in *** work proposes a new strategy for creating underwater deployable and water-resistant adhesives that may find promising applications in engineering and biomedical fields.

关键词： hyperbranched polymer adhesive anti-fouling hydrogel underwater adhesion

Air-blast anti-fouling cleaning for aquatic optical sensors

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International Journal of Agricultural and Biological Engineering 2015年第6期8卷 128-135,I0003页

作者： Zhang Yali Naiqian Zhang College of Engineering Key Laboratory of Key Technology on Agricultural Machine and EquipmentSouth China Agricultural UniversityGuangzhou 510642China Department of Biological and Agricultural Engineering College of EngineeringKansas State UniversityManhattanKS 66506USA

In order to solve the problem of fouling of submerged optical instruments,an air-blast cleaning mechanism was integrated into an optical sensor used for measuring suspended sediment concentration(SSC)in natural *** experiments in a manually created fouling environment were conducted to observe the fouling process on sensor cases made of different materials,and to verify the effectiveness of air-blast cleaning in reducing *** indicated that sensors with an aluminum case experienced more serious bio-fouling than that with polyethylene case,and the air-blast cleaning mechanism was capable of reducing fouling effect on sensor *** the submerged optical instruments should avoid using metal *** duration and frequency of air-blast cleaning can be determined and adjusted depending on actual field conditions.

关键词： optical sensor aquatic sensor anti-fouling bio-fouling air-blast cleaning sediment

Self-cleaning anti-fouling TiO2/Poly(aryl ether sulfone) Composite Ultrafiltration Membranes

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Chemical Research in Chinese Universities 2019年第4期35卷 714-720页

作者： JIANG Hongchuan YANG Xia FENG Yong WANG Xinyu GENG Zhi HUO Mingxin Jilin Engineering Lab for Water Pollution Control and Resources Recovery College of EnvironmentNortheast Normal UniversityChangchun 130117P.R.China

A series of novel TiO2/poly(aryl ether sulfone) ultrafiltration membranes with anti-fouling and self-cleaning properties was designed and prepared. First, anti-photocatalytic degraded fluorine contained polv(aryl ether sulfone) matrix(PAES-F) was synthesized. Then the composite membranes were prepared via TiO2 nanopartides and PAES-F polymer matrix by solution blending and non-solvent induced phase inversion methods. Further, separation efficiency, fouling behavior and self-cleaning property of the composite ultrafiltration(UF) membranes were investigated by dead-end filtration experiments using a polyacn lamide solution. The composite UF membranes exhibited outstanding self-cleaning efficiency and anti-photocatalytic degraded property after exposure to simulated sunliglit *** water flux recovery ratios(FRR)of the optimal composite UF membranes could reach 74.24%, which was attributable to photocatalytic degradation of the organic contaminant by TiO2. And the retention rates of the composite UF membranes could maintain over 97%, which indicated the excellent photocatalytic degradation resistance of the fluorine contained PAES-F matrix. The novel high perfomiance composite UF membranes have a broad application prospect in water treatment.

关键词： Poly(aryl ether sulfone) Ultrafiltration anti-fouling Self-cleaning Titanium dioxide

An Integrated anti-fouling and anti-Corrosion Coating Enabled by rGO/AgNPs and Amphiphilic Networks

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Engineering 2024年第11期42卷 223-234页

作者： Shu Tian Jinli Zhang Shuan Liu Jingyu Li Jibin Pu Yugang Hao Guobing Ying Qunji Xue Guangming Lu Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Department of Material Science and Engineering College of Mechanics and Engineering ScienceHohai UniversityNanjing 211100China Department of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

Marine corrosion and biofouling are challenges that affect marine industrial equipment,and protecting equipment with functional coatings is a simple and effective ***,it is extremely difficult to combine anti-corrosion and anti-fouling properties in a single *** this work,we combine reduced graphene oxide(rGO)/silver nanoparticles(AgNPs)with a hydrophilic polymer in a bio-based silicone-epoxy resin to create a coating with both anti-fouling and anti-corrosion *** excel-lent anti-fouling performance of the coating results from a ternary synergistic mechanism involving foul-ing release,contact inhibition,and a hydration effect,while the outstanding anti-corrosion performance is provided by a ternary synergistic anti-corrosion mechanism that includes a dense interpenetrating net-work(IPN)structure,a barrier effect,and *** results show that the obtained coating pos-sesses superior anti-fouling activity against protein,bacteria,algae,and other marine organisms,as well as excellent anti-corrosion and certain self-healing properties due to its dynamic cross-linked net-work of rGO/AgNPs and the hydrophilic *** work provides an anti-corrosion and anti-fouling integrated coating for marine industrial equipment.

关键词： anti-fouling anti-corrosion rGO/AgNPs Amphiphilic coating

Simple fabrication of Cu^(2+)doped calcium alginate hydrogel filtration membrane with excellent anti-fouling and antibacterial properties

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Chinese Chemical Letters 2021年第3期32卷 1051-1054页

作者： Tian Bai Kongyin Zhao Zijie Lu Xuefang Liu Ze Lin Mengmeng Cheng Ziyi Li Dunwan Zhu Linhua Zhang State Key Laboratory of Separation Membranes and Membrane Processes Tiangong UniversityTianjin 300387China Tianjin Key Laboratory of Biomedical Materials Key Laboratory of Biomaterials and Nanotechnology for Cancer ImmunotherapyInstitute of Biomedical EngineeringChinese Academy of Medical Sciences&Peking Union Medical CollegeTianjin 300192China

Herein,copper ion doped calcium alginate(Cu^(2+)/CaAlg)composite hydrogel filtration membranes were prepared by using natural polymer sodium alginate(NaAlg)as raw *** thermal stability and structure of the composite membranes were characterized by thermogravimetric analysis and infrared *** mechanical strength,anti-fouling performance,hydrophilicity and filtration performance of the membrane were *** results show that Cu^(2+)/CaAlg hydrogel membrane has excelle nt mechanical properties and thermal *** anti-swelling ability of the membrane was greatly enhanced by doping Cu^(2+).After three alternate filtration cycles,the flux recovery rate of Cu^(2+)/CaAlg hydrogel membrane can still reach 85%,indicating that the membrane has good antipollution *** the operation pressure was 0.1 MPa,the rejection of coomassie brilliant blue G250 reached 99.8%with a flux of 46.3 L m^(-2)h^(-1),while the Na_(2)SO_(4) rejection was less than 10.0%.The Cu^(2+)/CaAlg membrane was recycled after 24 h in the filtration process,and its flux and rejection rate did not decrease significantly,indicating that the hydrogel membrane has long-term application *** Cu^(2+)/CaAlg membrane has a wide range of applications prospect in dye desalination,fine separation and biopharmaceutical technology fields.

关键词： Calcium alginate Cu^(2+)doped Hydrogel Filtration membrane antibacterial anti-fouling

All in one doubly pillared MXene membrane for excellent oil/water separation,pollutant removal,and anti-fouling performance

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Chinese Journal of Structural Chemistry 2024年第8期43卷 38-47页

作者： Changle Liu Mingyuzhi Sun Haoran Zhang Xiqian Cao Yuqing Li Yingtang Zhou Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control National Engineering Research Center for Marine AquacultureMarine Science and Technology CollegeZhejiang Ocean UniversityZhoushan316004China

Given the diversity and complexity of coexisting oil/dyes/heavy metal ions/microorganisms in wastewater and volatile organic compounds(VOCs)in the air,developing separation materials featured in higher separation efficiency and lower energy consumption for oil and water separation,pollutant removal,and anti-fouling is urgently needed,but it remains a major challenge till ***,a multifunctional Ti_(3)C_(2)MXene membrane with unique double pillar support was proposed by liquid phase ultrasonication and vacuum filtration to over-come the above *** cetyl-trimethyl ammonium bromide(CTAB)and calcium chloride/sodium alginate(CaCl_(2)/SA)to the MXene membrane as crossed double pillars and superhydrophilic surface increases the tolerance and wettability of the *** fabricated doubly pillared MXene(d-Ti_(3)C_(2))membrane exhibits superior oil/water(O/W)separation efficiency(99.76%)with flux(1.284 L m^(-2)h^(-1))for canola oil and organic dye removing efficiency for methyl blue(MB)99.85%,malachite green(MG)100%,and methyl violet(MV)99.72%,respectively,which is 1.05,1.44,1.22,and 1.28 fold compared with pre-pillared Ti_(3)C_(2)(p-Ti_(3)C_(2)).The superior anti-oil/dye/fouling is attributed to lower oil conglutination,high hydrophily,and antibacterial *** versatile MXene membrane also shows distinguished separation of VOCs(η>99%)from polluted *** experimental and molecular dynamics(MD)computational simulation results illustrate that the superior sepa-ration efficiency of the Ti_(3)C_(2)MXene membrane is ascribed to the unique doubly pillared space *** study paves a new road to further research on one step integration strategy for complex O/W separation,wastewater and VOCs removal,and anti-fouling via tuning nano/macro architecture.

关键词： MXene Pillared structure Oil/water separation Pollutants anti-fouling Volatile organic compounds