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Zhang X, Peng C, Jiang J. pH-Controllable Redox Responsive Amphiphilic Viologens for Switchable Emulsions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401651. [PMID: 38660702 DOI: 10.1002/smll.202401651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/12/2024] [Indexed: 04/26/2024]
Abstract
A pH and redox dual responsive amphiphilic viologen is synthesized, which can be reversibly transformed among the zwitterionic (SVa), monovalent anionic (SV+), and divalent anionic (SVH2+) forms upon pH variation, exhibiting pH-controllable redox responsive properties. Switchable Pickering emulsions with different droplet size and viscosity are prepared by the mixture of hydrophilic silica nanoparticles and the viologens (SV+ or SVH2+) at acidic conditions, while such combination yielded an oil-in-dispersion emulsion at neutral pH value. Not only can rapid reversible demulsification/stabilization of the Pickering emulsions be achieved by redox reactions, but the rate of redox-demulsification can also be controlled by pH trigger. The dual-responsive amphiphilic viologens have potential applications in developing intelligent colloid materials and molecular logic systems.
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Affiliation(s)
- Xinyue Zhang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Chifang Peng
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Jianzhong Jiang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
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Amiri Z, Halladj R, Shekarriz M, Rashidi A. Synthesis and application of recyclable magnetic cellulose nanocrystals for effective demulsification of water in crude oil emulsions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123042. [PMID: 38040188 DOI: 10.1016/j.envpol.2023.123042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 10/29/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
The development of eco-friendly, efficient, and economical demulsifiers for the demulsification of water in crude oil emulsion is one of the important issues in the petroleum industry. Demulsifiers with suitable performance in several demulsification methods are good choices for effective and economical demulsification. In this study, recyclable magnetic cellulose nanocrystals have been synthesized from cotton by a simple method and used in the demulsification of water in crude oil emulsions. Chemical and magnetic demulsification by magnetic cellulose nanocrystals has been investigated. In addition, the effects of time, temperature, and demulsifier concentration on the demulsification efficiency have been evaluated. According to the results, this demulsifier can be used as an effective demulsifier for both chemical and magnetic demulsification and displayed a demulsification efficiency of 100 % at 50 °C without a magnet and 90 % at 20 °C with a magnet. The chemical demulsification efficiency of Fe3O4 nanoparticles was investigated and it showed lower DE compared to magnetic cellulose nanocrystals. The recyclability tests of the demulsifier indicated that magnetic cellulose nanocrystals can be used up to 4 times. Finally, the demulsification mechanism and interfacial tension measurements revealed that this demulsifier reduced the interfacial tension between water and crude oil and increased the water droplet sizes.
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Affiliation(s)
- Zahra Amiri
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Rouein Halladj
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
| | - Marzieh Shekarriz
- Chemical, Polymeric, and Petrochemical Technology Research Division, Faculty of Research and Development in Downstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
| | - Alimorad Rashidi
- Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
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Li W, Liu S, Huang K, Qin S, Liang B, Wang J. Preparation of magnetic Janus microparticles for the rapid removal of microplastics from water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166627. [PMID: 37647968 DOI: 10.1016/j.scitotenv.2023.166627] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/25/2023] [Accepted: 08/25/2023] [Indexed: 09/01/2023]
Abstract
The continuous spread of microplastics in aquatic environments poses a growing concern and a potential risk to human health. To address this concern, this paper presents a novel approach using magnetic Janus microparticles (MJMs) synthesized via a modified Pickering emulsion method with aminated Fe3O4@SiO2 as the raw material. The effectiveness of these MJMs in removing polystyrene (PS) and polyethylene (PE) microplastics from water was investigated. Paraffin was employed as the masking agent, while N-Octadecylphosphosphonic acid (PAC18) was used as the graft material for MJM preparation. The resulting particles exhibited a distinctive asymmetric flower-shaped structure on the surface, which was confirmed through various analytical techniques including FTIR, TGA, SEM, and water phase contact angle analysis. The MJMs demonstrated exceptional efficiency in adsorbing microplastics. With a microplastic suspension concentration of 2 mg/mL and an adsorbent dosage of 1 mg/mL, the MJMs can attain removal efficiencies of 92.08 % for PS and 60.67 % for PE in just 20 min of contact time. The effectiveness of the adsorption process was attributed to several factors, including hydrophobic interactions, cation-π interactions, electrostatic attraction, and the efficient dispersion of particles in water, as revealed by size distribution and zeta potential analysis. Additionally, kinetic and thermodynamic studies confirmed the remarkable adsorption rate and capacity of the MJMs (0.759 min-1 and 2.72 mg/mg for PS, 0.539 min-1 and 2.42 mg/mg for PE), highlighting their potential as a promising method for rapidly removing microplastics from water. This work provides valuable insights into the development of effective strategies for addressing microplastic pollution in aquatic environments.
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Affiliation(s)
- Wanhe Li
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
| | - Shihong Liu
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
| | - Kai Huang
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China.
| | - Shibin Qin
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
| | - Bin Liang
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
| | - Jun Wang
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China; College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
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Yang Y, Zhu M, Jin K, Wang Y, Wang J, Zhang Z, Shen L, Feng X, Mi Y. Preparation of a demulsifier for oily wastewater using thorn fir bark as raw materials via a hydrothermal and solvent-free amination route. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85525-85536. [PMID: 35799004 DOI: 10.1007/s11356-022-21860-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
In current work, a TB-EDA demulsifier for disposing oily wastewater was prepared using thorn fir bark (TB) as starting materials via a hydrothermal and solvent-free amination route. Field emission scanning electron microscope (FE-SEM), energy dispersive X-ray spectrometer (EDS), and Fourier transform infrared spectroscope (FT-IR) were employed to characterize the TB-EDA demulsifier. Three-phase contact angle (CA), interfacial activity, formation of interfacial film (FIF), coalescence time of droplets (CTD), dynamic interfacial tension (IFT), and Zeta potential were carried out to study the possible demulsification mechanism. Bottle test was performed to investigate the effect of the TB-EDA dosage, salinity, and pH value on the demulsification performance at room temperature. Light transmittance (DL) and oil removal rate (DR) of separated water were 94.7% and 97.2%, respectively, with 100 mg/L of TB-EDA demulsifier in oily wastewater at room temperature. In addition, the TB-EDA demulsifier has an excellent salt tolerance even at the salinity of 50,000 mg/L. The corresponding DL and DR could reach 99.8% and 99.9%, respectively.
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Affiliation(s)
- Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Mingzhao Zhu
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China
| | - Kechun Jin
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Yancheng Wang
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China
| | - Jiangbo Wang
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China
| | - Zongtan Zhang
- Oil & Gas Field Capacity Construction Division, PetroChina Tarim Oilfield Company, Korla, 841000, People's Republic of China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China.
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Yuan H, Ye F, Ai G, Zeng G, Chen L, Shen L, Yang Y, Feng X, Zhang Z, Mi Y. Preparation of an environmentally friendly demulsifier using waste rice husk as raw materials for oil–water emulsion separation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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He X, Lu Q. Design and fabrication strategies of cellulose nanocrystal-based hydrogel and its highlighted application using 3D printing: A review. Carbohydr Polym 2022; 301:120351. [DOI: 10.1016/j.carbpol.2022.120351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/30/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022]
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Fabrication of alkyl/amino siloxane-modified magnetic nanoparticles for simultaneous demulsification of O/W and W/O emulsions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ye F, Jiang X, Liu H, Ai G, Shen L, Yang Y, Feng X, Yuan H, Zhang Z, Mi Y, Yan X. Amine functional cellulose derived from wastepaper toward oily wastewater treatment and its demulsification mechanism. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Shen L, Ai G, Ao Y, Zeng G, Yang Y, Feng X, Zhang Z, Yuan H, Ye F, Mi Y. Treatment of water-in-crude oil emulsion driven by SiO2 modified rice bran. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127708] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Facile preparation of attapulgite nanofiber membrane for efficient separation of high-viscosity oil-in-water emulsions. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Yang F, He X, Tan W, Liu G, Yi T, Lu Q, Wei X, Xie H, Long Q, Wang G, Guo C, Pensini E, Lu Z, Liu Q, Xu Z. Adhesion-Shielding based synthesis of interfacially active magnetic Janus nanoparticles. J Colloid Interface Sci 2021; 607:1741-1753. [PMID: 34598031 DOI: 10.1016/j.jcis.2021.08.202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/10/2021] [Accepted: 08/30/2021] [Indexed: 11/29/2022]
Abstract
HYPOTHESIS A unique adhesion-shielding (AS)-based method could be used to manufacture magnetic Janus nanoparticles (IM-JNPs) of promising interfacial activities, asymmetric surface wettability, and great performance on deoiling from oily wastewater under the external magnetic field. EXPERIMENTS The IM-JNPs were characterized using scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FTIR). The interfacial properties of IM-JNPs were investigated by the measurements of interfacial pressure-area isotherms (π-A), oil-water interfacial tension, and the related crumpling ratio. The Langmuir-Blodgett (L-B) technique was used to determine the asymmetric surface wettability of the IM-JNPs. The performance and recyclability of IM-JNPs for treating oily wastewater were also investigated. FINDINGS Using the proposed AS-based method, 17.9 g IM-JNPs were synthesized at a time and exhibited excellent interfacial properties, as indicated by decreasing oil-water interfacial tension from 38 to 27 mN/m. The crumpling behavior of the oil droplet further demonstrated the irreversible deposition of IM-JNPs at the oil droplet surfaces. The L-B technique and water contact angle measurement confirmed the asymmetric surface wettability of the IM-JNPs. The IM-JNPs were applied to successful removal of > 90% emulsified oil droplets from the household-produced oily wastewater under the external magnetic field while realizing facile recyclability and regeneration.
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Affiliation(s)
- Fan Yang
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, PR China; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Xiao He
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada; Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4 Canada
| | - Wen Tan
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Gang Liu
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Tingting Yi
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Qingye Lu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4 Canada
| | - Xiaoting Wei
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Hanjie Xie
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Qiurong Long
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - GuiChao Wang
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Chuanfei Guo
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Erica Pensini
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Zhouguang Lu
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Qingxia Liu
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, PR China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
| | - Zhenghe Xu
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China.
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