1
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Mi Y, Shen L, Huang X, Yu Y, Zhang Z, Ding Y, Chen L, Zhao Y, Tang Y, Qu Q. Synthesis of an efficient demulsifier derived from cotton cellulose and its demulsification performance in oily wastewater. Int J Biol Macromol 2025; 296:139839. [PMID: 39814311 DOI: 10.1016/j.ijbiomac.2025.139839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2024] [Revised: 01/06/2025] [Accepted: 01/11/2025] [Indexed: 01/18/2025]
Abstract
Substantial amounts of oily wastewater are inevitably generated during petroleum extraction and petrochemical production, and the effective treatment of these O/W emulsions is crucial for environmental protection and resource recovery. The development of an environmentally friendly, cost-effective, and efficient demulsifier that operates effectively at low concentrations remains a significant challenge. This study introduces an eco-friendly ionic liquid demulsifier, Cotton Cellulose-Dodecylamine (CCDA), which demonstrates exceptional demulsification performance at low concentrations. CCDA was synthesized from natural cotton, which underwent hydrophobic modification using dodecylamine. The chemical structure and surface morphology were characterized using FT-IR, 1H NMR, 13C NMR and SEM. The demulsification experiments demonstrated that CCDA achieved a light transmittance of 87.56 % and an oil removal rate of 99.78 % at 20 mg/L, along with exceptional salt tolerance. Besides, CCDA exhibited effective demulsification in O/W emulsions stabilized by anionic and nonionic surfactants. Furthermore, the possible demulsification mechanism of CCDA was elucidated through an analysis of interfacial adsorption kinetics and zeta potential measurements. The results indicate that CCDA promotes demulsification by replacing natural surfactants at the interface and facilitating electrostatic neutralization. Consequently, CCDA holds significant promise for the treatment of oily wastewater and provides a new idea for the application of biomass materials in demulsification.
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Affiliation(s)
- Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China; Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Jingzhou 434023, PR China.
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China; Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Jingzhou 434023, PR China
| | - Xinru Huang
- Xi'an Changqing Chemical Group Co., Ltd, Xi'an 710068, PR China
| | - Yilu Yu
- Xi'an Changqing Chemical Group Co., Ltd, Xi'an 710068, PR China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Yu Ding
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Lingrui Chen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Yajun Zhao
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Yuqi Tang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Qian Qu
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
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2
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Jiang S, Li P, Li L, Amiralian N, Rajah D, Xu ZP. Fostering rehydration and facilitating bioactive release through cellulose-assisted leaf surface treatment. Carbohydr Polym 2025; 347:122732. [PMID: 39486962 DOI: 10.1016/j.carbpol.2024.122732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/18/2024] [Accepted: 09/08/2024] [Indexed: 11/04/2024]
Abstract
Glyphosate is a widely used herbicide in weed control and crop protection. However, its low bioavailability on leaf surfaces of weeds led to excessive use of glyphosate, inducing herbicide-resistant development and major sustainable agricultural and environmental concerns. This study addresses these challenges by developing cellulose-assisted glyphosate formulations using superior rehydration and sustainable release capability of nanocelluloses. We prepared glyphosate-loaded nanocellulose particles (CNP) and cellulose nanofibers (CNF) to enhance the rehydration and sustained release of glyphosate on leaf surfaces. Our results have demonstrated that nanocelluloses significantly improved water capture on the leaf surface and gradual release of glyphosate, with CNP and CNF formulations showing an 8.75-fold increase in water adsorption on cotton leaves compared to the control group over 12 h. Furthermore, incorporating an inorganic salt improved moisture adsorption efficiency. The formulations exhibited high compatibility with existing spray technologies, offering substantial economic and environmental benefits for agriculture practices. This approach highlights the potential application of polysaccharides in revolutionizing agrochemical applications and environmental sustainability, providing great potential in agricultural spraying practices.
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Affiliation(s)
- Shangxu Jiang
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, QLD 4072, Australia
| | - Peng Li
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, QLD 4072, Australia; Moganshan Institute, Zhejiang University of Technology, Huzhou, Zhejiang 313200, China.
| | - Li Li
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Nasim Amiralian
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, QLD 4072, Australia
| | - Divya Rajah
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, QLD 4072, Australia
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, QLD 4072, Australia; Institute of Biomedical Health Technology and Engineering, Institute of Systems and Physical Biology, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518107, China.
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3
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Fiaz M, Khan S, Baig N, Sohail M. Tunning the Wettability of the PVDF Membrane using the PVA-Stabilized TA-UiO-66-NH 2 MOF Membranes to Separate Layered Oil-Water Mixture and Surfactant-Stabilized Emulsion. Chem Asian J 2024:e202401430. [PMID: 39714554 DOI: 10.1002/asia.202401430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2024] [Accepted: 12/20/2024] [Indexed: 12/24/2024]
Abstract
This study introduces a UiO-66-NH2/Tannic acid/Polyvinylidene fluoride (UTP) composite membrane for efficient oil-water separation. Pristine polyvinylidene fluoride (PVDF) membranes, due to their hydrophobic nature, tend to foul during oil-in-water emulsion separation. By incorporating the metal-organic framework (MOF) UiO-66-NH2 and stabilizing it with tannic acid (TA) and polyvinyl alcohol (PVA), the membrane's hydrophilicity and antifouling properties were significantly enhanced. The water contact angle of the UTP membrane decreased from 121° to 3°, indicating a dramatic increase in hydrophilicity, while the underwater oil contact angle (UWOCA) of 119° demonstrated excellent oleophobicity. The modified membrane achieved over 99 % separation efficiency and improved flux by 15 times compared to the pristine PVDF. TA acted as a binder, ensuring uniform MOF dispersion and improving the composite's stability. The PVA further reinforced the structure, enhancing durability under operational conditions. Durability tests showed no significant MOF detachment after repeated use, confirming the stability of the UTP composite. The results highlight the potential of the UTP membrane for oil-water separation with superior permeability and fouling resistance.
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Affiliation(s)
- Muhammad Fiaz
- School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan
| | - Sumayyah Khan
- School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan
| | - Nadeem Baig
- Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Manzar Sohail
- School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan
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4
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Liu S, Zhang H, Yuan S, Yuan S. Effects of Surfactants on Oil Droplet Demulsification in Oil-in-Water Emulsions under an Electric Field: A Molecular Dynamics Study. ACS OMEGA 2024; 9:48232-48245. [PMID: 39676928 PMCID: PMC11635463 DOI: 10.1021/acsomega.4c05623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 11/14/2024] [Accepted: 11/18/2024] [Indexed: 12/17/2024]
Abstract
The application of an electric field to demulsification of oil-in-water (O/W) emulsions has received extensive attention. However, microcosmic information about the effect of surfactant type on the demulsification of an O/W emulsion under an electric field is still rare. In this work, the effects of cationic surfactant cetyltrimethylammonium bromide (CTAB) and anionic surfactant sodium dodecyl sulfate (SDS) on oil droplet demulsification in an emulsion under a pulsed-DC electric field were studied by molecular dynamics (MD) simulation. The MD simulation results show that oil droplets underwent directional movement under the action of an electric field. The larger the electric field strength, the shorter the time required for the oil droplets to coalesce. However, the movement direction of the oil droplets in the electric field was different depending on the type of surfactant. Compared to oil droplets containing SDS, oil droplets containing CTAB molecules exhibited faster deformation and easier migration coalescence under low electric field strength. It was mainly attributed to the fact that the deformation of oil droplets will be accelerated when oil droplets contain asphaltene molecules and surfactant molecules with different electronegativities under an electric field. During the demulsification of oil droplets containing CTAB molecules, CTAB molecules generated electrostatic attraction with asphaltene molecules in adjacent oil droplets, strengthened the interaction between oil droplets, and promoted the demulsification of oil droplets. In the process of oil droplet demulsification containing SDS molecules, the potential energy of the electrostatic interaction between oil droplets did not change, and the demulsification mainly depended on the van der Waals force between oil droplets.
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Affiliation(s)
- Shasha Liu
- School
of Chemistry and Chemical Engineering, Qilu
Normal University, Jinan 250000, PR China
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250000, PR China
| | - Heng Zhang
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250000, PR China
| | - Shideng Yuan
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250000, PR China
| | - Shiling Yuan
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250000, PR China
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5
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Hernandez-Rodriguez G, Tenorio-Garcia E, Ettelaie R, Lishchuk SV, Harbottle D, Murray BS, Sarkar A. Demulsification of Pickering emulsions: advances in understanding mechanisms to applications. SOFT MATTER 2024; 20:7344-7356. [PMID: 39258321 DOI: 10.1039/d4sm00600c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Pickering emulsions are ultra-stable dispersions of two immiscible fluids stabilized by solid or microgel particles rather than molecular surfactants. Although their ultra-stability is a signature performance indicator, often such high stability hinders their demulsification, i.e., prevents the droplet coalescence that is needed for phase separation on demand, or release of the active ingredients encapsulated within droplets and/or to recover the particles themselves, which may be catalysts, for example. This review aims to provide theoretical and experimental insights on demulsification of Pickering emulsions, in particular identifying the mechanisms of particle dislodgment from the interface in biological and non-biological applications. Even though the adhesion of particles to the interface can appear irreversible, it is possible to detach particles via (1) alteration of particle wettability, and/or (2) particle dissolution, affecting the particle radius by introducing a range of physical conditions: pH, temperature, heat, shear, or magnetic fields; or via treatment with chemical/biochemical additives, including surfactants, enzymes, salts, or bacteria. Many of these changes ultimately influence the interfacial rheology of the particle-laden interface, which is sometimes underestimated. There is increasing momentum to create responsive Pickering particles such that they offer switchable wettability (demulsification and re-emulsification) when these conditions are changed. Demulsification via wettability alteration seems like the modus operandi whilst particle dissolution remains only partially explored, largely dominated by food digestion-related studies where Pickering particles are digested using gastrointestinal enzymes. Overall, this review aims to stimulate new thinking about the control of demulsification of Pickering emulsions for release of active ingredients associated with these ultra-stable emulsions.
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Affiliation(s)
- Gloria Hernandez-Rodriguez
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
- School of Chemical and Process Engineering, University of Leeds, UK
| | - Elizabeth Tenorio-Garcia
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Rammile Ettelaie
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Sergey V Lishchuk
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
- Thermodynamics and Process Engineering, Technische Universität Berlin, 10587 Berlin, Germany
| | - David Harbottle
- School of Chemical and Process Engineering, University of Leeds, UK
| | - Brent S Murray
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Anwesha Sarkar
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
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6
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Sun H, Li X. Enhanced demulsification of alkaline-surfactant-polymer flooding O/W emulsion by multibranched polyether-polyquaternium based on the size effect of oil droplets. CHEMOSPHERE 2024; 363:142768. [PMID: 38969221 DOI: 10.1016/j.chemosphere.2024.142768] [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: 04/24/2024] [Revised: 06/20/2024] [Accepted: 07/03/2024] [Indexed: 07/07/2024]
Abstract
In the alkaline-surfactant-polymer flooding emulsion, oil droplets with various sizes exhibited different interfacial properties, resulting in different stabilization and destabilization behaviors. In view of this, it is expected to achieve outstanding oil-water separation efficiency by screening targeted demulsifier for oil droplets with different size ranges (0-1, 1-5 and 5-10 μm). Based on the size effect of oil droplets, a series of multibranched polyether-polyquaternium demulsifiers that integrated different charge neutralization and interfacial displacement functionalities were designed by regulating the cationicity and EO:PO ratios. As a result, the most effective polyether-polyquaternium variant for each size range of oil droplet was screened out. By employing these three selected polyether-polyquaternium variants in a sequential batch demulsification test, the maximum demulsification efficiency of 95.1% was obtained, which was much higher than that using a single polyether-polyquaternium variant (82.5%, 80.5% and 83.8%). The adsorption behaviors of polyether-polyquaternium variants on the oil/water interface were investigated by the molecular dynamics simulation. Moreover, the interfacial properties and oil droplet size variations during the demulsification process were monitored, so as explore the demulsification mechanism. This demulsification protocol based on the size effect of oil droplets with its excellent oil-water separation performance offered significant technical promise for the emulsified oil wastewater disposal.
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Affiliation(s)
- Hao Sun
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; State Key Laboratory of Coking Coal Resources Green Exploitation, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Xiaobing Li
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; State Key Laboratory of Coking Coal Resources Green Exploitation, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China.
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7
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Abdullah MS, Al-Lohedan HA, Faqihi NA, Al-Maswari BM. Efficient Demulsification of Crude Oil Emulsion Using Novel Sugar-based Surfactant. ACS OMEGA 2024; 9:32144-32152. [PMID: 39072075 PMCID: PMC11270713 DOI: 10.1021/acsomega.4c04299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/18/2024] [Accepted: 07/05/2024] [Indexed: 07/30/2024]
Abstract
This study aimed to synthesize ecofriendly and low-cost surfactant-based sugar, HA-ST, under mild conditions and a short route via an opening ring of hexadecylsuccinic anhydride (HA) using starch (ST). HA-ST's chemical structure, thermal behavior, and surface activity were evaluated using Fourier Transform Infrared (FTIR) spectroscopy, thermogravimetric analysis, and a pendant drop technique. The results indicated HA-ST formation, thermal stability, and surface activity. HA-ST's green character, low cost, and surface activity recommended its use as a demulsifier for crude oil emulsions at different affecting parameters such as temperature, seawater ratio (SR), demulsifier concentration, demulsification time (DT), and pH. HA-ST demulsification efficiency (DE) was evaluated and compared with a commercial demulsifier (CD). The results showed improved HA-ST's DE with rising temperature, SR, demulsifier concentration, DT, and pH. The DE of HAST reached 100% at 50% of SR and 250 ppm of demulsifier concentration; the same results were obtained using CD. In contrast, HA-ST gave relatively lower DE at low SR (10%) with a value of 70% than the obtained using CD with a value of 75%. The green character, low cost, and DE of HA-ST make it suitable for demulsifying crude oil emulsions, especially those containing more than 30% seawater, compared with CD, which commonly contains two or more traditional surfactants.
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Affiliation(s)
- Mahmood
M. S. Abdullah
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Hamad A. Al-Lohedan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Noorah A. Faqihi
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
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8
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Gu Y, Chen W, Chen L, Liu M, Zhao K, Wang Z, Yu H. Electrochemical coalescence of oil-in-water droplets in microchannels of TiO 2-x/Ti anode via polarization eliminating electrostatic repulsion and ·OH oxidation destroying oil-water interface film. WATER RESEARCH 2024; 255:121550. [PMID: 38579590 DOI: 10.1016/j.watres.2024.121550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/10/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024]
Abstract
Electrochemistry is a sustainable technology for oil-water separation. In the common flat electrode scheme, due to a few centimeters away from the anode, oil droplets have to undergo electromigration to and electrical neutralization at the anodic surface before they coalesce into large oil droplets and rise to water surface, resulting in slow demulsification and easy anode fouling. Herein, a novel strategy is proposed on basis of a TiO2-x/Ti anode with microchannels to overcome these problems. When oil droplets with several microns in diameter flow through channels with tens of microns in diameter, the electromigration distance is shortened by three orders of magnitude, electrical neutralization is replaced by polarization coupling ·OH oxidation. The new strategy was supported by experimental results and theoretical analysis. Taking the suspension containing emulsified oil as targets, COD value dropped from initial 500 mg/L to 117 mg/L after flowing through anodic microchannels in only 58 s of running time, and the COD removal was 21 times higher than that for a plate anode. At similar COD removal, the residence time was 48 times shorter than that of reported flat electrodes. Coalescences of oil droplets in microchannels were observed by a confocal laser scanning microscopy. This new strategy opens a door for using microchannel electrodes to accelerate electrochemical coalescence of oil-in-water droplets.
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Affiliation(s)
- Yuwei Gu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Weiqiang Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Li Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Meng Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Kun Zhao
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhichen Wang
- Suzhou Guolong Technology Development Co., Ltd, Suzhou 215217, China
| | - Hongtao Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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Park J, Kang S, Park E, Lee D, Park J, Kim D, Choi SQ, Kim K. A facile method for separating fine water droplets dispersed in oil through a pre-wetted mesh membrane. iScience 2024; 27:109556. [PMID: 38617558 PMCID: PMC11015444 DOI: 10.1016/j.isci.2024.109556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/08/2024] [Accepted: 03/22/2024] [Indexed: 04/16/2024] Open
Abstract
To achieve the successful separation of emulsions containing fine dispersed droplets and low volume fractions, a membrane with pore sizes comparable to or smaller than the droplet size is typically required. Although this approach is effective, its utilization is limited to the separation of emulsions with relatively large droplets. To overcome this limitation, a secondary membrane can be formed on the primary membrane to reduce pore size, but this can also be time-consuming and costly. Therefore, a facile and effective method is still required to be developed for separating emulsions with fine droplets. We introduce a pre-wetted mesh membrane with a pore size significantly larger than droplets, easily fabricated by wetting a hydrophilic stainless-steel mesh with water. Applying this membrane to emulsion separation via gravity-driven flow confirms a high efficiency greater than 98%, even with droplets approximately 10 times smaller than the pore size.
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Affiliation(s)
- JiEun Park
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul 01811, Republic of Korea
| | - Seunghan Kang
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - EunSol Park
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul 01811, Republic of Korea
| | - Dongho Lee
- Process R&D center, Hanwha solutions R&D institute, Daejeon 34128, Republic of Korea
| | - Jeasung Park
- Green and sustainable materials R&D department, Korea institute of industrial technology (KITECH), Cheonan 31056, Republic of Korea
| | - Donghun Kim
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Siyoung Q. Choi
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - KyuHan Kim
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul 01811, Republic of Korea
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10
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Abdullah MS, Al-Lohedan HA, Al-Maswari BM. One-Pot Synthesis of Amphipathic Esters for Demulsification of Water-in-Crude Oil Emulsions. ACS OMEGA 2024; 9:16842-16850. [PMID: 38617663 PMCID: PMC11007694 DOI: 10.1021/acsomega.4c01668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/12/2024] [Accepted: 03/22/2024] [Indexed: 04/16/2024]
Abstract
The current work aims to synthesize new amphipathic compounds, TGHA and PGHA, and investigate their demulsification performance (DP) in water-in-crude oil emulsions. Their chemical structures, thermal stability, interfacial activity, and micelle formation were investigated by different techniques. The bottle test method was used to investigate the effect of demulsifier concentration, water content, temperature, and demulsification time (DT) on the DP of TGHA and PGHA compared to a commercial demulsifier (CD). The results indicated that these parameters have a noticeable impact on the DP of TGHA and PGHA. The results also showed that TGHA exhibited higher DP than PGHA at all investigated parameters, which could be explained by increasing its hydrophobicity due to lower oxyethylene units in its structure than PGHA. An increase in these units means increased hydrophilicity, which led to obstruction of PGHA molecule diffusion in crude oil as a continuous phase. Moreover, TGHA gave a comparable DP with CD, as it gave a higher DP and shorter DT than CD at a higher water content (50%), while the latter achieved the highest DP and the shortest DT at a low water content (10%).
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Affiliation(s)
- Mahmood
M. S. Abdullah
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Hamad A. Al-Lohedan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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11
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Li Z, Huang X, Xu X, Bai Y, Zou C. Unstable Coalescence Mechanism and Influencing Factors of Heterogeneous Oil Droplets. Molecules 2024; 29:1582. [PMID: 38611861 PMCID: PMC11013347 DOI: 10.3390/molecules29071582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
The use of a surfactant solution during oil and gas field development might improve the recovery rate of oil reservoirs. However, the serious emulsification of the produced liquid will bring challenges to the subsequent treatment process and storage and transportation. It is urgent to understand the coalescence mechanism of crude oil under the action of surfactant solution. This research investigates the coalescence mechanism of numerous oil droplets under liquid flow perturbation. The model was established to study the coalescence process of multiple oil droplets. The effects of the number of oil droplets under homogeneous conditions, the size of oil droplets, and the distance between oil droplets under non-homogeneous conditions on the coalescence process were analyzed. Meanwhile, the change rules of the completion time of oil droplet coalescence were drawn. The results show that the smaller the size of individual oil droplets under non-homogeneous conditions, the longer the coalescence completion time is, and when the size of individual oil droplets reaches the nanometer scale, the time for coalescence of oil droplets is dramatically prolonged. Compared to static circumstances, the time it takes for oil droplets to coalesce is somewhat shorter under gravity. In the fluid flow process, in the laminar flow zone, the coalescence time of oil droplets decreases with the increase of the liquid flow rate. However, in the turbulent flow zone, the coalescence time of oil droplets increases with the increase in the liquid flow rate. The coalescence time is in the range of 600~1000 ms in the flow rate of 0.05~0.2 m/s. In the presence of surfactants, the oil content in the emulsion system increases under the influence of pumping flow. The change in oil content rate with various surfactants is less impacted by flow rate, owing to the stable emulsion structure created by the extracted fluid within the reservoir. The study findings presented in this research provide technical assistance for effective crude oil storage and transportation.
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Affiliation(s)
- Zhuolun Li
- Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China; (Z.L.); (C.Z.)
| | - Xiayi Huang
- No. 9 Oil Production Plant of Daqing Oilfield Co., Ltd., Daqing 163318, China;
| | - Xuenan Xu
- Drilling and Production Technology Research Institute, Petrochina Liaohe Oilfield Limited Company, Panjin 124010, China;
| | - Yujie Bai
- Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China; (Z.L.); (C.Z.)
| | - Che Zou
- Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China; (Z.L.); (C.Z.)
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12
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Li N, Pang Y, Sun Z, Sun X, Li W, Sun Y, Zhu L, Li B, Wang Z, Zeng H. Unraveling Partial Coalescence Between Droplet and Oil-Water Interface in Water-in-Oil Emulsions under a Direct-Current Electric Field via Molecular Dynamics Simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5992-6003. [PMID: 38445586 DOI: 10.1021/acs.langmuir.3c04024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
When the electric field strength (E) surpasses a certain threshold, secondary droplets are generated during the coalescence between water droplets in oil and the oil-water interface (so-called the droplet-interface partial coalescence phenomenon), resulting in a lower efficiency of droplet electrocoalescence. This study employs molecular dynamics (MD) simulations to investigate the droplet-interface partial coalescence phenomenon under direct current (DC) electric fields. The results demonstrate that intermolecular interactions, particularly the formation of hydrogen bonds, play a crucial role in dipole-dipole coalescence. Droplet-interface partial coalescence is categorized into five regimes based on droplet morphology. During the contact and fusion of the droplet with the water layer, the dipole moment of the droplet exhibits alternating increases and decreases along the electric field direction. Electric field forces acting on sodium ions and the internal interactions within droplets promote the process of droplet-interface partial coalescence. High field strengths cause significant elongation of the droplet, leading to its fragmentation into multiple segments. The migration of hydrated ions has a dual impact on the droplet-interface partial coalescence, with both facilitative and suppressive effects. The time required for droplet-interface partial coalescence initially decreases and subsequently increases as the field strength increases, depending on the competitive relationship between the extent of droplet stretching and the electric field force. This work provides molecular insights into the droplet-interface coalescence mechanisms in water-in-oil emulsions under DC electric fields.
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Affiliation(s)
- Ning Li
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G1H9, Canada
| | - Yunhui Pang
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhiqian Sun
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Xiaoyu Sun
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G1H9, Canada
| | - Wangqing Li
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Yongxiang Sun
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G1H9, Canada
| | - Liyun Zhu
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Bin Li
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhenbo Wang
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G1H9, Canada
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13
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Zhao Z, Li H, Gao X. Microwave Encounters Ionic Liquid: Synergistic Mechanism, Synthesis and Emerging Applications. Chem Rev 2024; 124:2651-2698. [PMID: 38157216 DOI: 10.1021/acs.chemrev.3c00794] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Progress in microwave (MW) energy application technology has stimulated remarkable advances in manufacturing and high-quality applications of ionic liquids (ILs) that are generally used as novel media in chemical engineering. This Review focuses on an emerging technology via the combination of MW energy and the usage of ILs, termed microwave-assisted ionic liquid (MAIL) technology. In comparison to conventional routes that rely on heat transfer through media, the contactless and unique MW heating exploits the electromagnetic wave-ions interactions to deliver energy to IL molecules, accelerating the process of material synthesis, catalytic reactions, and so on. In addition to the inherent advantages of ILs, including outstanding solubility, and well-tuned thermophysical properties, MAIL technology has exhibited great potential in process intensification to meet the requirement of efficient, economic chemical production. Here we start with an introduction to principles of MW heating, highlighting fundamental mechanisms of MW induced process intensification based on ILs. Next, the synergies of MW energy and ILs employed in materials synthesis, as well as their merits, are documented. The emerging applications of MAIL technologies are summarized in the next sections, involving tumor therapy, organic catalysis, separations, and bioconversions. Finally, the current challenges and future opportunities of this emerging technology are discussed.
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Affiliation(s)
- Zhenyu Zhao
- School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Hong Li
- School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Xin Gao
- School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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14
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Low JY, Khe CS, Usman F, Hassan YM, Lai CW, You KY, Lim JW, Khoo KS. Review on demulsification techniques for oil/water emulsion: Comparison of recyclable and irretrievable approaches. ENVIRONMENTAL RESEARCH 2024; 243:117840. [PMID: 38081342 DOI: 10.1016/j.envres.2023.117840] [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: 08/11/2023] [Revised: 11/21/2023] [Accepted: 11/30/2023] [Indexed: 02/06/2024]
Abstract
Since the establishment of the first global refinery in 1856, crude oil has remained one of the most lucrative natural resources worldwide. However, during the extraction process from reservoirs, crude oil gets contaminated with sediments, water, and other impurities. The presence of pressure, shear forces, and surface-active compounds in crude oil leads to the formation of unwanted oil/water emulsions. These emulsions can take the form of water-in-oil (W/O) emulsions, where water droplets disperse continuously in crude oil, or oil-in-water (O/W) emulsions, where crude oil droplets are suspended in water. To prevent the spread of water and inorganic salts, these emulsions need to be treated and eliminated. In existing literature, different demulsification procedures have shown varying outcomes in effectively treating oil/water emulsions. The observed discrepancies have been attributed to various factors such as temperature, salinity, pH, droplet size, and emulsifier concentrations. It is crucial to identify the most effective demulsification approach for oil/water separation while adhering to environmental regulations and minimizing costs for the petroleum sector. Therefore, this study aims to explore and review recent advancements in two popular demulsification techniques: chemical demulsification and magnetic nanoparticles-based (MNP) demulsification. The advantages and disadvantages of each technique are assessed, with the magnetic approach emerging as the most promising due to its desirable efficiency and compliance with environmental and economic concerns. The findings of this report are expected to have a significant impact on the overall process of separating oil and water, benefiting the oil and gas industry, as well as other relevant sectors in achieving the circular economy.
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Affiliation(s)
- Joo Yee Low
- Department of Science and Technology Studies, Faculty of Science, Universiti Malaya, 50603, Wilayah Persekutuan, Kuala Lumpur, Malaysia
| | - Cheng Seong Khe
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia.
| | - Fahad Usman
- Centre for Advanced Industrial Technology, University of Malaysia Pahang, Pekan Campus, 26600, Pekan, Pahang, Malaysia; Department of Physics, Al-Qalam University Katsina, PMB 2137, Katsina, Katsina, Nigeria
| | - Yarima Mudassir Hassan
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Advanced Studies (IAS), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Kok Yeow You
- School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia
| | - Jun Wei Lim
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia; Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, India
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103, Tamil Nadu, India.
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15
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Liu S, Yuan Y, Wang L, Yuan S, Yuan S. Molecular Dynamics Study on the Effect of Polyacrylamide on Electric Field Demulsification of Oil-in-Water Emulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2698-2707. [PMID: 38268181 DOI: 10.1021/acs.langmuir.3c03267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The effect of the water-soluble polymer (partially hydrolyzed polyacrylamide, HPAM) in produced water on the demulsification process of the electric field was studied by molecular dynamics simulations. By comparing the coalescence process of oil droplets in the electric field environment with or without HPAM, we find that HPAM in the water phase can promote the coalescence of nearly oil droplets but hinder the deformation and migration of oil droplets. By analyzing the radial distribution function and interaction energy between molecules, we conclude that the existence of HPAM molecules can reduce the hydrophilicity of other molecules through their strong interaction with water, and sodium ions (Na+) have strong interaction with bound water in the process of breaking away from HPAM, thus leading the movement of water molecules. At the same time, the influence of HPAM molecules located between the two oil droplets on the demulsification process was also studied. The HPAM molecules and sodium ions located between the two oil droplets also affected the coalescence process of oil droplets under an electric field by interacting with water.
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Affiliation(s)
- Shasha Liu
- School of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250100, PR China
- Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100, PR China
| | - Yawen Yuan
- School of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250100, PR China
| | - Lin Wang
- School of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250100, PR China
| | - Shideng Yuan
- Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100, PR China
| | - Shiling Yuan
- Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100, PR China
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16
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Chandrasekhar P, Kaliyaperumal R. Revolutionizing Brain Drug Delivery: Buccal Transferosomes on the Verge of a Breakthrough. RECENT ADVANCES IN DRUG DELIVERY AND FORMULATION 2024; 18:262-275. [PMID: 39356098 DOI: 10.2174/0126673878312336240802113811] [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: 03/14/2024] [Revised: 07/13/2024] [Accepted: 07/23/2024] [Indexed: 10/03/2024]
Abstract
The buccal cavity, also known as the oral cavity, is a complex anatomical structure that plays a crucial role in various physiological processes. It serves as a gateway to the digestive system and facilitates the initial stages of food digestion and absorption. However, its significance extends beyond mere digestion as it presents a promising route for drug delivery, particularly to the brain. Transferosomes are lipid-based vesicles that have gained significant attention in the field of drug delivery due to their unique structure and properties. These vesicles are composed of phospholipids that form bilayer structures capable of encapsulating both hydrophilic and lipophilic drugs. Strategies for the development of buccal transferosomes for brain delivery have emerged as promising avenues for pharmaceutical research. This review aims to explore the various approaches and challenges associated with harnessing the potential of buccal transferosomes as a means of enhancing drug delivery to the brain. By understanding the structure and function of both buccal tissue and transferosomes, researchers can develop effective formulation methods and characterization techniques to optimize drug delivery. Furthermore, strategic approaches and success stories in buccal transferosome development are highlighted, showcasing inspiring examples that demonstrate their potential to revolutionize brain delivery.
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Affiliation(s)
- Pavuluri Chandrasekhar
- Department of Pharmaceutics, Faculty of Pharmacy, Bharath Institute of Higher Education and Research, Selaiyur, Chennai, Tamil Nadu, 600073, India
| | - Rajaganapathy Kaliyaperumal
- Department of Pharmacology, Faculty of Pharmacy, Bharath Institute of Higher Education and Research, Selaiyur, Chennai, Tamil Nadu, 600073, India
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17
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Khalesi Moghaddam R, Mhatre S, Yarranton HW, Natale G. Optical Tweezers-Based Measurements of Colloidal Forces between Asphaltene Thin Films: Effect of Ultrasonication. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:17009-17020. [PMID: 38000781 DOI: 10.1021/acs.langmuir.3c01183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2023]
Abstract
Oil production and processing often involve the treatment of water-in-oil emulsions stabilized by asphaltenes. The asphaltenes adsorb irreversibly at the water-oil interface and, by self-association at the interface, form a viscoelastic film that stabilizes the emulsions mechanically and sterically. Hydrophobic forces associated with these films may also contribute to the emulsion stability. A key step in treating these emulsions is to weaken the asphaltene film at the interface, and one way to do so is with ultrasonic treatment. The effect of ultrasonic waves on the interactions between asphaltene films was investigated at a silica-water interface using optical tweezers. Silica microparticles were aged in asphaltene solutions to form asphaltene coatings on their surfaces. The particles were dispersed in water, and interparticle force measurements were performed with optical tweezers to capture the steric force and hydrophobic force contributions. The asphaltene coating thickness and hydrophobic coefficient (a factor resembling the strength of the hydrophobic interaction) were obtained from fitting these forces. The effect of ultrasonication on the thickness of the asphaltene films on the surfaces of the particles was investigated. No change in the hydrophobic coefficient was observed upon changing the interfacial asphaltene concentration. The asphaltene film thickness increased with the concentration of the asphaltene solution and aging time. After treatment of the dispersion with ultrasonic waves for different durations (between 5 and 40 min), a significant reduction in the coating thickness was observed. This reduction was confirmed by thermogravimetric analysis (TGA) measurements. It is hypothesized that cavitation at the interface removed part of the surface layer of asphaltenes from the coated particles. Based on these findings, we proved that a low-power ultrasound field can effectively break asphaltene-stabilized water-in-oil emulsions.
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Affiliation(s)
- R Khalesi Moghaddam
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - S Mhatre
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - H W Yarranton
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - G Natale
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
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18
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Matsubara H, Doi J. Effect of the Interfacial Tension on the Stability of Silica Stabilized Pickering Emulsions near the Lower Critical Solution Temperature of 2,6-Lutidine - Water Mixtures. J Oleo Sci 2023; 72:1091-1095. [PMID: 37989303 DOI: 10.5650/jos.ess23119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023] Open
Abstract
In this paper, the kinetic stability of Pickering emulsions stabilized by spherical silica particles (100 nm in diameter) was examined in the water - 2,6-lutidine mixture. In the close vicinity of the lower critical solution temperature, Pickering emulsions were unstable due to the ultra-low liquid-liquid interfacial tension but increased their stability with increasing the temperature. In this system, the interfacial tension obeys universal scale law and can be tuned by temperature without adding any surface-active agents. Owing to this unique feature, we elucidated the relation between the interfacial tension and the stability of Pickering emulsions.
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Affiliation(s)
- Hiroki Matsubara
- Graduate School of Advanced Science and Engineering, Hiroshima University
| | - Junya Doi
- Graduate School of Advanced Science and Engineering, Hiroshima University
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19
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Ju Y, Hua J, Gu Y, Chen H. Construction of high-branched derivatives based on melamine for highly effective defoaming and antifoaming. J Colloid Interface Sci 2023; 650:2075-2086. [PMID: 37423855 DOI: 10.1016/j.jcis.2023.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/15/2023] [Accepted: 07/04/2023] [Indexed: 07/11/2023]
Abstract
Foams can be seen everywhere in human production and life. An uncontrolled foam event usually leads to product losses, equipment damage, and clean-up costs. Defoamer is one of the most effective strategies to eliminate or inhibit foam activities, which has been proved by long-term practices. In this work, we report new molecular defoamers with high-branched structure, which adopts melamine molecule as the parent structure, by incorporating alkyl-isocyanates with different chain lengths into the high-branched melamine derivatives (Hb-MDs) formula to replace the R - NH2 (primary ammonia) on melamine structure. The substitution reaction processes can be readily tuned by varying the molar ratio or alkyl chain length of alkyl-isocyanate, enabling a facile control over the branched degree. The foam tests reveal that the high-branched melamine molecule defoamers exhibited excellent defoaming and anti-foaming properties for four typical foam systems, including an anionic SDBS, cationic DTAB, non-ionic AEO-9, and white cat (BM) detergent, with efficiency close to that of silicone-type LN1414 defoamer and far superior to that of high-carbon alcohol XS-02 defoamer, at the same addition level. Notably, the defoaming or anti-foaming performances of the high-branched melamine molecule defoamers were not always monotonically increased with the branched degree or hydrophobic chain length, but a suitable range needed to be maintained to support a good balance of defoamer structure with foam liquid films. Therefore, it is anticipated that this high-branched design principle could open a new avenue for the construction of molecular defoamers for complex industrial problems.
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Affiliation(s)
- Yonggan Ju
- College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, PR China
| | - Jingxian Hua
- College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, PR China
| | - Yawei Gu
- College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, PR China
| | - Hongling Chen
- College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, PR China.
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20
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Ao Y, He J, Chen K, Zhu M, Ye F, Shen L, Yang Y, Feng X, Zhang Z, Tang Y, Mi Y. Amine-functionalized cotton for the treatment of oily wastewater. ENVIRONMENTAL RESEARCH 2023; 237:116882. [PMID: 37574103 DOI: 10.1016/j.envres.2023.116882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/15/2023]
Abstract
Common commercial demulsifiers are typically made from ethylene oxide and propylene oxide. The production process is dangerous and complex, with poor adaptability and high cost. In this work, cotton modified with polyethylene polyamine was utilized as a demulsifier for the treatment of oily wastewater. The chemical structure and morphology of the as-prepared sample (CPN) were characterized by IR spectrum and SEM. The effect of CPN dosage, pH value, and salinity on the demulsification performance of oily wastewater was explored through the bottle tests. The results showed that the light transmittance of separated water was 81.7% and the corresponding deoiling rate was 98.5% when a CPN dosage of 25 mg/L was used at room temperature for 30 min. The interfacial properties were also systematically investigated, and the results indicated that CPN had better interfacial activity and a stronger reduction capability of interfacial tension compared to asphaltenes. The finding initiated and accelerated the demulsification process of oily wastewater. Based on the outstanding performance of this biomass-derived demulsifier, it shows promising potential for application in the treatment of oily wastewater.
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Affiliation(s)
- Yiling Ao
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Ji'an He
- CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Keming Chen
- CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Mingzhao Zhu
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, PR China
| | - Fan Ye
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuqi Tang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
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21
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Qu Q, Li H, Li S, Hu Z, Zhu M, Chen J, Sun X, Tang Y, Zhang Z, Mi Y, Yu W. Synthesis and demulsification mechanism of an ionic liquid with four hydrophobic branches and four ionic centers. CHEMOSPHERE 2023; 340:139802. [PMID: 37598952 DOI: 10.1016/j.chemosphere.2023.139802] [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: 06/02/2023] [Revised: 07/19/2023] [Accepted: 08/10/2023] [Indexed: 08/22/2023]
Abstract
Stable emulsions can have numerous negative impacts on both the oil industry and the environment. This study focuses on the synthesis of two ionic liquids (via. PPBD and PPBH) with four hydrophobic branches and four ionic centers that can effectively treat oil-water emulsions at a low temperature of 40 °C. Their chemical structure was explored using Fourier-transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance hydrogen spectra (1H NMR). The effect of temperature, PPBD and PPBH concentration, oil-water ratio, salinity and pH value on the demulsification efficiency (DE) of W/O emulsion was studied detailly and several commercial demulsifiers were also used for comparison. Results revealed that by adding 250 mg/L of PPBH in an E30 emulsion and leaving it for 120 min at 40 °C, the DE could reach 96.34%. Meanwhile, in an E30 emulsion (oil-water mass ratio of 3:7) with 250 mg/L of PPBD, the DE of 95.23% could be obtained at 40 °C for 360 min. Especially, the DE of PPBH could reach 100% in an E70 emulsion (oil-water mass ratio of 7:3) at the same conditions. Additionally, the demulsifier (PPBH) exhibited excellent salt resistance and outperformed some commonly used commercial demulsifiers. Several methods were utilized to investigate the potential demulsification mechanism, including measuring interfacial tension (IFT), three-phase contact angle (CA), droplet contact time, zeta potential, and observing samples under optical microscopy.
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Affiliation(s)
- Qian Qu
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Huan Li
- National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Research Institute of Exploration and Development of PetroChina Changqing Oil Field Company, Xi'an, 710001, PR China
| | - Shuman Li
- National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Research Institute of Exploration and Development of PetroChina Changqing Oil Field Company, Xi'an, 710001, PR China
| | - Zhijie Hu
- National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Research Institute of Exploration and Development of PetroChina Changqing Oil Field Company, Xi'an, 710001, PR China
| | - Mingzhao Zhu
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, PR China
| | - Junhong Chen
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, PR China
| | - Xuebiao Sun
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, PR China
| | - Yuqi Tang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
| | - Weichu Yu
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
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22
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Qu Z, An C, Yue R, Bi H, Zhao S. Assessment of the infiltration of water-in-oil emulsion into soil after spill incidents. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165325. [PMID: 37414189 DOI: 10.1016/j.scitotenv.2023.165325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/02/2023] [Accepted: 07/02/2023] [Indexed: 07/08/2023]
Abstract
The issue of inland oil spills exerts an adverse impact on environmental and ecological health. Many cases are concerned with water-in-oil emulsions, especially in the oil production and transport system. To understand the contamination and take an efficient response work after spill, this study investigated the infiltration behavior of water-in-oil emulsions and the influencing factors by measuring the characteristics of different emulsions. The results showed that an increase of water and fine particle content and decrease in temperature would improve the viscosity of emulsions and reduce the infiltration rate, whereas salinity levels had a negligible impact on infiltration if the pour point of emulsion systems was far higher than the freezing point of water droplets. It is worth mentioning that excessive water content at a high temperature may cause demulsification during the infiltration process. The oil concentration in different soil layers was related to the viscosity of emulsion and infiltration depth, and the adopted Green-Ampt model simulated well under low temperature. This study reveals the new features of emulsion infiltration behavior and distribution patterns under different conditions and is helpful for the response work after spill accidents.
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Affiliation(s)
- Zhaonian Qu
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Chunjiang An
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
| | - Rengyu Yue
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Huifang Bi
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Shan Zhao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China
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23
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Mizan MMH, Gurave PM, Rastgar M, Rahimpour A, Srivastava RK, Sadrzadeh M. "Biomass to Membrane": Sulfonated Kraft Lignin/PCL Superhydrophilic Electrospun Membrane for Gravity-Driven Oil-in-Water Emulsion Separation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41961-41976. [PMID: 37624730 DOI: 10.1021/acsami.3c09964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
Biobased membranes made with green solvents have numerous advantages in the water purification industry; however, their long-term use is impeded by severe membrane fouling and low structural stability. Herein, we proposed a facile and green approach to fabricate an eco-friendly and biodegradable electrospun membrane by simply blending polycaprolactone (PCL) with sulfonated kraft lignin (SKL) in a green solvent (i.e., acetic acid) without needing any additional post-treatment. We investigated the influence of SKL content on the surface morphology, chemical composition, and mechanical properties of the electrospun membrane. The SKL-modified membranes (L-5 and L-10) showed superhydrophilicity and underwater superoleophobicity with a water contact angle (WCA) of 0° (<3 s) and an underwater-oil contact angle (UWOCA) over 150° due to the combined effect of surface roughness and hydrophilic chemical functionality. Furthermore, the as-prepared membranes demonstrated excellent pure water flux of 800-900 LMH and an emulsion flux of 170-480 LMH during the gravity-driven filtration of three surfactant-stabilized oil-in-water emulsions, namely, mineral oil/water, gasoline/water, and n-hexadecane/water emulsions. In addition, these membranes exhibited superior antioil-fouling performance with excellent separation efficiency (97-99%) and a high flux recovery ratio (>98%). The 10 wt % SKL-incorporated membrane (L-10) also showed consistent separation performance after 10 cyclic tests, indicating its excellent reusability and recyclability. Furthermore, the stability of the membrane under harsh pH conditions was also evaluated and proved to be robust enough to maintain its wettability in a wide pH range (pH 1-10).
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Affiliation(s)
- Md Mizanul Haque Mizan
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Pramod M Gurave
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Masoud Rastgar
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Ahmad Rahimpour
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Rajiv K Srivastava
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Mohtada Sadrzadeh
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
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24
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Rezaie A, Ghasemi H, Eslami F. An in-depth investigation of the impact of salt nature on the formulation of microemulsion systems. Sci Rep 2023; 13:14362. [PMID: 37658147 PMCID: PMC10474266 DOI: 10.1038/s41598-023-40761-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 08/16/2023] [Indexed: 09/03/2023] Open
Abstract
Electrolytes have a wide range of technological applications. Despite the recent improvements in characterizing and predicting the phase behavior of microemulsion systems by hydrophilic-lipophilic deviation (HLD) and net-average curvature (NAC) frameworks, they are ineffective in the presence of different salts. This work seeks to bridge this gap by investigating the influence of salt nature on the microemulsion phase formulation. First, a one-dimensional salinity scan on different microemulsion systems consisting of sodium dodecyl benzene sulfonate as a surfactant, hexane as an oil and, several brines was carried out, and the effect of each salt on the phase behavior were precisely evaluated. The results for optimum salinity and solubilization parameter of different salts were consistent with the Hofmeister series. In addition, multiple linear regression model is presented to accurately predicting the optimum salinity of different salts using this research data and all the available experimental data. The results revealed that the values estimated by this model is in significant consistency with the experimental data by correlation coefficient of 0.92. Finally, the effect of salt type on the NAC parameters (length parameter, and characteristic length[Formula: see text] were evaluated to improve the predicting ability of this equation of state in the presence of various salts. We found that salt nature has a significant impact on both these parameters. It was found that the length parameter is linearly dependent on the optimum ionic strength of salts while the salting-out capacity of each salt was predominant factor affecting the characteristic length.
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Affiliation(s)
- Ali Rezaie
- Department of Chemical Engineering, Tarbiat Modares University, Jalal Al Ahmad HWY, P.O. Box: 14115-111, Tehran, Iran
| | - Hassan Ghasemi
- Department of Chemical Engineering, Tarbiat Modares University, Jalal Al Ahmad HWY, P.O. Box: 14115-111, Tehran, Iran
| | - Fatemeh Eslami
- Department of Chemical Engineering, Tarbiat Modares University, Jalal Al Ahmad HWY, P.O. Box: 14115-111, Tehran, Iran.
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25
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Javadian S, Sadrpoor SM, Khosravian M. Taking a look accurately at the alteration of interfacial asphaltene film exposed to the ionic surfactants as demulsifiers. Sci Rep 2023; 13:12837. [PMID: 37553504 PMCID: PMC10409716 DOI: 10.1038/s41598-023-39731-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 07/30/2023] [Indexed: 08/10/2023] Open
Abstract
The water droplets surrounded by a rigid interfacial asphaltene (ASP) film is one of the major setbacks in the petroleum industry. In this study, the properties of the interfacial ASP films around water droplets exposed to ionic surfactants as demulsifier were investigated. According to molecular dynamics (MD) simulation, the anionic surfactants are more effective than the cationic surfactant in the demulsification process since the anionic surfactants have the exact desire to localize not only near the ASP molecules but also near the water molecules. It has been found that it is likely to cause film changes and ruptures. Also, the MD simulation results for the desired surfactant, anionic surfactant, demonstrated that an increase in the surfactant concentration had an adverse effect on the system by hindering the change in the interfacial film. The increase in the temperature along with the enhancement in the adsorption rate of the surfactant results in the better performance of the demulsifier. Taking the MD and quantum results into account, the film deformation is a decisive factor in demulsification. The quantum computation has indicated that the electrostatic interactions play a significant role in selecting the attraction position and adsorption energy of the surfactant molecules.
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Affiliation(s)
- Soheila Javadian
- Department of Physical Chemistry, Faculty of Basic Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Islamic Republic of Iran.
| | - S Morteza Sadrpoor
- Department of Physical Chemistry, Faculty of Basic Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Islamic Republic of Iran
| | - Mahnaz Khosravian
- Department of Physical Chemistry, Faculty of Basic Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Islamic Republic of Iran.
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26
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Raynel G, Marques DS, Al-Thabet M. The influence of water droplet packing on crude oil emulsion. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2023; 46:53. [PMID: 37450063 DOI: 10.1140/epje/s10189-023-00311-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/15/2023] [Indexed: 07/18/2023]
Abstract
To assure a smooth and cost-efficient flow of crude oil emulsion from wells to a production facility, the oil industry relies heavily on the prediction of viscosity in pipe. The physical expression of this viscosity depends on a subjective estimate of a maximum packing volume fraction (compacity), ranging between 58 and 74 vol%. This inaccurate practice can lead to catastrophic loss of pump efficiency. Two new concepts were defined to describe the emulsion: its compacity; and the occupancy of water droplets at the oil-water interface. This development leads to a better understanding of the formation and disappearance of a suspension, and can assist in building a reliable phenomenological model of the sedimentation and coalescence of an emulsion. Theoretical and experimental approaches were conducted to investigate the packing of water droplets in emulsions. A 3D packing model was developed to explain the observations made during emulsification experiments. It was found that below a water volume fraction of 34 vol%, water droplets settle, under the effect of gravity, in a loose-packed zone; and then sediment in a dense-packed zone (DPZ). The DPZ exists between a water volume fraction of 34 vol% and 60 vol%. The maximum compacity is the upper limit of this zone; and has a value of 60.46%. Knowing this objective value, other parameters affecting the viscosity can be better studied.
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Affiliation(s)
- Guillaume Raynel
- Saudi Aramco, Research and Development Center, Dhahran, Saudi Arabia.
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27
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Dai Q, Li D, Sun Y, Wang H, Lu Y, Yang D. Low temperature-resistant superhydrophobic and elastic cellulose aerogels derived from seaweed solid waste as efficient oil traps for oil/water separation. CHEMOSPHERE 2023; 336:139179. [PMID: 37330065 DOI: 10.1016/j.chemosphere.2023.139179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/19/2023]
Abstract
Aerogel has excellent application potential in adsorption, heat preservation, and other areas due to its typical advantages of low density and high porosity. However, there are several issues with the use of aerogel in oil/water separation, including weak mechanical qualities and challenges in eliminating organic contaminants at low temperature. Inspired by cellulose Iα, which has excellent performance at low temperature, this study used cellulose Iα nanofibers extracted from seaweed solid waste as the skeleton, through covalent cross-linked with ethylene imine polymer (PEI) and hydrophobic modification of 1, 4-phenyl diisocyanate (MDI), supplemented by freeze-drying technology to form three-dimensional sheet, and successfully obtained cellulose aerogels derived from seaweed solid waste (SWCA). The compression test shows that the maximum compressive stress of SWCA is 61 kPa, and the initial performance still maintains 82% after 40 cryogenic compression cycles. In addition, the contact angles of water and oil on the surface of the SWCA were 153° and 0°, respectively, and the stable hydrophobic time in simulated seawater is more than 3 h. By combining the elasticity and superhydrophobicity/superoleophilicity, the SWCA with an oil absorption capacity of up to 11-30 times its mass, might be utilized repeatedly for the separation of an oil/water mixture.
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Affiliation(s)
- Qinglin Dai
- State Key Laboratory of Bio-fibers and Eco-textiles, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, China
| | - Daohao Li
- State Key Laboratory of Bio-fibers and Eco-textiles, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, China
| | - Yuanyuan Sun
- State Key Laboratory of Bio-fibers and Eco-textiles, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, China
| | - Hu Wang
- State Key Laboratory of Bio-fibers and Eco-textiles, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, China
| | - Yun Lu
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China.
| | - Dongjiang Yang
- State Key Laboratory of Bio-fibers and Eco-textiles, School of Environmental Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, China.
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28
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Meng M, Yang Q. Investigation of the Microscopic Process of the Media Coalescence Treatment of Water-in-Oil Emulsion. ACS OMEGA 2023; 8:11908-11915. [PMID: 37033871 PMCID: PMC10077465 DOI: 10.1021/acsomega.2c07274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/13/2023] [Indexed: 06/19/2023]
Abstract
Medium coalescence technology is a research hotspot for the separation of oil-in-water emulsions. However, the coalescence mechanism is still unclear, making it challenging to effectively improve the separation performance. Herein, the microscopic mechanism of medium coalescence was revealed. We found that the effective collision positions under the action of the flow field include the exposed granule surface, adherent droplet surface, and three-phase contact line. Furthermore, a numerical model of the microscopic process of water-in-oil emulsion permeation through a granular bed was established. The effects of different parameters (including the number of medium layers, Reynolds number, and inlet concentration) on the microscopic process of capturing dispersed-phase droplets in the bed and the pressure drop in the coalescence area were studied. The numerical results show that the droplets form the bridging structure between the granules. On the one hand, the bridging structure promotes the capture of the droplets by the bed; on the other hand, it causes pressure-drop fluctuations in the coalescence area and asymmetric distribution of the velocity field.
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Affiliation(s)
- Min Meng
- School
of Mechanical and Power Engineering, East
China University of Science and Technology, Shanghai 200237, P.R. China
- Computational
Aerodynamics Institute, China Aerodynamics Research & Development
Center, Mianyang 621000, P.R. China
| | - Qiang Yang
- School
of Mechanical and Power Engineering, East
China University of Science and Technology, Shanghai 200237, P.R. China
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29
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A AR, Jagadeesan AK, Deivasigamani P, Sundararaman S, Balakrishna Pillai Sankari NP. The bio-adsorption competence of tailor made lemon grass adsorbents on oils: An in-vitro approach. ENVIRONMENTAL RESEARCH 2023; 222:115332. [PMID: 36709874 DOI: 10.1016/j.envres.2023.115332] [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: 09/27/2022] [Revised: 12/05/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The oil contamination in aquatic system is considered as most serious environmental issues and identifying a suitable ecofriendly solution for this oil pollution management is critical. Hence, this research was designed to evaluate the oils (petrol, diesel, engine oil, and crude oil) adsorptive features through raw lemon grass adsorbent, physically/chemically treated adsorbents. Initially, such raw and treated adsorbents were characterized by Scanning Electron Microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and Energy-Dispersive X-ray Spectroscopy (EDS) analysis. These characterization techniques revealed that the lemon grass adsorbent had considerable level of pollutant adsorption potentials owing to porous morphological structure, active functional groups and pollutants interaction with chemical elements. The physically treated adsorbent exhibited better adsorption characteristics than others. Accordingly, the petrol adsorption potential of raw adsorbent, physically treated and chemically treated ones was discovered as their weight incremented up to 2.0, 3.0, and 1.5 times their initial weight, respectively. Similarly, the weight of raw form, physically and chemically treated ones on diesel had increased significantly, up to 2.5 times, 4.0 times, and 2.0 times, respectively. It was evaluated that the weight of these tested adsorbents on engine oil incremented by 3.5, 5.0, and 3.0 times their initial weight, while on crude oil these incremented by 4.0, 6.0, and 4.0 times their initial weight respectively. When the media are compared, it's indeed evident about absorption which is preferred as follows: Crude oil, engine oil, diesel, and petrol. The physically treated lemon grass adsorbent showed maximum adsorption and retention potential than others. The kinetic study reveals that the pseudo second order kinetics is the best fit for the adsorption of oil with R2 value of 0.99.
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Affiliation(s)
- Annam Renita A
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India.
| | - Aravind Kumar Jagadeesan
- Department of Energy and Environmental Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, Tamil Nadu, India
| | - Prabu Deivasigamani
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India
| | - Sathish Sundararaman
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India
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30
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Ezzat A, Al-Lohedan HA, Tawfeek AM, Faqihi NA. One-Step Synthesis of New Amphiphilic Nonionic Surfactants Based on Alkylamine and Poly(ethylene glycol) Dimethacrylate for Demulsification of Arabian Heavy Crude Oil Emulsions. ACS OMEGA 2023; 8:6030-6039. [PMID: 36816702 PMCID: PMC9933207 DOI: 10.1021/acsomega.2c08058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
New non-ionic surfactants based on alkylamine and poly(ethylene glycol) dimethacrylate were synthesized by one-step Aza-Michael addition reaction. The surfactants' chemical compositions, surface and interfacial activities, micellization, and zeta potential were characterized. Their surface and interfacial activities recommended the application as demulsifiers for water in Arabian heavy oil emulsions (w/o). The demulsification of this type of emulsion has attracted researchers' attention because of its high stability with water droplets in the microscale. The outcome of using the prepared surfactants showed high performance as emulsion breakers, as the demulsification efficiency reached 100% for w/o emulsions with different water to oil ratios (50:50, 30:70, and 10:90).
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Affiliation(s)
- Abdelrahman
O. Ezzat
- Department
of Chemistry, College of Sciences, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Hamad A. Al-Lohedan
- Department
of Chemistry, College of Sciences, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed M. Tawfeek
- Department
of Chemistry, College of Sciences, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Noorah A. Faqihi
- Department
of Chemistry, College of Sciences, King
Saud University, Riyadh 11451, Saudi Arabia
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31
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Jang D, Lee J, Jang A. Impact of pre-coagulation on the ceramic membrane process during oil-water emulsion separation: Fouling behavior and mechanism. CHEMOSPHERE 2023; 313:137596. [PMID: 36538953 DOI: 10.1016/j.chemosphere.2022.137596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/10/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Coagulation has been evaluated as an economical and effective pre-treatment method for controlling membrane fouling. We investigated the influence of the pre-coagulation of oil-water (O/W) emulsions on the formation of membrane fouling in the ceramic membrane process. The results confirmed that pre-coagulation effectively mitigated the fouling formation on the ceramic membrane surface during the O/W emulsion separation. The mechanism of mitigating membrane fouling by pre-coagulation was proposed, owing to the reduction in the zeta potential value of oil droplets by pre-coagulation, resulting in weak electrostatic attraction between oil droplets and ceramic membrane surfaces, and an increase in the size of the oil droplets by pre-coagulation, leading the formation of a cake layer fouling. In addition, the decrease in the hydrophobicity of oil droplets by pre-coagulation resulted in alleviating the hydrophobic interaction between oil droplets and membrane surface. The proposed fouling mechanism was supported by the characterization of the virgin and fouled membrane surfaces and the analysis of the fouling resistance ability of the membranes. Our study could be indicative of mitigation protocols that can be used to alleviate membrane fouling on ceramic membranes during oily wastewater treatment.
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Affiliation(s)
- Duksoo Jang
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
| | - Jaeyoung Lee
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea; Shimadzu Scientific Korea Corp., 609, Eonju-ro, Gangnam-gu, Seoul, 06108, Korea
| | - Am Jang
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
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32
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Zhang L, Bai C, Zhang Z, Wang X, Nguyen TV, Vavra E, Puerto M, Hirasaki GJ, Biswal SL. Application of magnetic nanoparticles as demulsifiers for surfactant‐enhanced oil recovery. J SURFACTANTS DETERG 2023. [DOI: 10.1002/jsde.12658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Leilei Zhang
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Chutian Bai
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Zhuqing Zhang
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Xinglin Wang
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Thao Vy Nguyen
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Eric Vavra
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Maura Puerto
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - George J. Hirasaki
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
| | - Sibani Lisa Biswal
- Department of Chemical and Biomolecular Engineering Rice University Houston Texas USA
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33
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Yuan S, Wang Y, Wang X, Liao D, Duan M, Fang S. Preparation of cationic polyacrylate W/O crude oil emulsion demulsifier by free‐radical solution polymerization. J Appl Polym Sci 2023. [DOI: 10.1002/app.53590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Sisi Yuan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu Sichuan China
| | - Yongjun Wang
- Oilfield Chemicals R&D Center CNOOC (Tianjin) Oilfield Chemical Co., Ltd Tianjin China
| | - Xiujun Wang
- State Key Laboratory of Offshore Oil Exploitation Beijing China
- CNOOC Research Institute Company, Ltd. Beijing China
| | - Donghua Liao
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu Sichuan China
| | - Ming Duan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu Sichuan China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu Sichuan China
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34
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Che W, Zhou L, Zhou Q, Xie Y, Wang Y. Flexible Janus wood membrane with asymmetric wettability for high-efficient switchable oil/water emulsion separation. J Colloid Interface Sci 2023; 629:719-727. [PMID: 36183650 DOI: 10.1016/j.jcis.2022.09.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/13/2022] [Accepted: 09/20/2022] [Indexed: 11/25/2022]
Abstract
Janus membranes have attracted much attention for switchable oil/water separation because they have opposite wetting behavior on each side. However, it remains a challenge to fabricate Janus membranes with asymmetric wettability from biomass by simple methods. Herein, we prepared a flexible Janus wood (JW) membrane by cutting the natural wood along the longitudinal direction, followed by a facile top-down approach. The hydrophobic lignin was removed from the wood to prepare a highly porous and superhydrophilic wood (SW) with underwater superoleophobicity. Then, one side of the SW was sprayed with a mixture of 1H,1H,2H,2H-perfluorooctyltrichlorosilane/SiO2 nanoparticles to form a superhydrophobic surface that hardly affected the wettability of the other side. The obtained JW membrane maintains its selective wettability in harsh environments owing to its durability and stability. Furthermore, it has a switchable, high separation efficiency of >99% for both oil-in-water and water-in-oil emulsions, which can be attributed to the unique wettability and hierarchical micro/nano structure of the JW membrane. Notably, the three-dimensional interconnected micro/nanochannels (pits and nanopores) of the JW membrane are beneficial to the size-sieving effect during emulsion separation. At the same time, the layered channels (tracheids and vessels) enable multiple separations. JW membrane is sustainable, inexpensive, stable, and easy to manufacture, providing more implications for the innovation of biomass-based Janus separation materials in industrial wastewater treatment.
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Affiliation(s)
- Wenbo Che
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China.
| | - Lingyue Zhou
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
| | - Qiaoru Zhou
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
| | - Yanjun Xie
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China
| | - Yonggui Wang
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China.
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35
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Gao Y, Xu G, Zhao P, Liu L, Zhang E. One step co-sintering synthesis of gradient ceramic microfiltration membrane with mullite/alumina whisker bi-layer for high permeability oil-in-water emulsion treatment. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Ren W, Pan J, Gai W, Pan X, Chen H, Li J, Huang L. Fabrication and characterization of PVDF-CTFE/SiO2 electrospun nanofibrous membranes with micro and nano-rough structures for efficient oil-water separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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37
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Quaternary Ammonium Siloxane-Decorated Magnetic Nanoparticles for Emulsified Oil-Water Separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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38
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Effect of cellulose nanocrystals on bacterial cellulose hydrogel for oil-water separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122349] [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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39
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Zhang Z, Wang Z, Zhang H, Wang Q, Tang Y, Qu Q, Shen L, Mi Y, Yan X. An ionic liquid demulsifier with double cationic centers and multiple hydrophobic chains. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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40
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Mu B, Zhu W, Sun J, Zhong J, Wang R, Wang X, Cao J. Enhancement of dewatering from oily sludge by addition of alcohols as cosolvents with dimethyl ether. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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41
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Xia X, Ma J, Geng S, Liu F, Yao M. A Review of Oil-Solid Separation and Oil-Water Separation in Unconventional Heavy Oil Production Process. Int J Mol Sci 2022; 24:74. [PMID: 36613516 PMCID: PMC9820792 DOI: 10.3390/ijms24010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/08/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Unconventional heavy oil ores (UHO) have been considered an important part of petroleum resources and an alternative source of chemicals and energy supply. Due to the participation of water and extractants, oil-solid separation (OSS) and oil-water separation (OWS) processes are inevitable in the industrial separation processes of UHO. Therefore, this critical review systematically reviews the basic theories of OSS and OWS, including solid wettability, contact angle, oil-solid interactions, structural characteristics of natural surfactants and interface characteristics of interfacially active asphaltene film. With the basic theories in mind, the corresponding OSS and OWS mechanisms are discussed. Finally, the present challenges and future research considerations are touched on to provide insights and theoretical fundamentals for OSS and OWS. Additionally, this critical review might even be useful for the provision of a framework of research prospects to guide future research directions in laboratories and industries that focus on the OSS and OWS processes in this important heavy oil production field.
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Affiliation(s)
- Xiao Xia
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Jun Ma
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Shuo Geng
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Fei Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Mengqin Yao
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
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Barbosa GD, Luz AM, Camargo CL, Tavares FW, Turner CH. Molecular simulation of the structural and thermodynamic properties of n-alkane/brine interfacial systems with nonionic surfactants. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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43
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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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45
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Dissipative particle dynamics simulation and experimental analysis of effects of Gemini surfactants with different spacer lengths on stability of emulsion systems. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Peng Y, Yu B, Zhang H, Fang Y, Liang X, Gong H, Liu Y. Vortex and its implication on separation performance in an electro-swirling coupling device. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2151472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ye Peng
- Chongqing Key Laboratory of Manufacturing Equipment Design and Control, Chongqing Technology and Business University, Chongqing, China
- Engineering Research Centre for Waste Oil Recovery Technology and Equipment of Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Bao Yu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, China
| | - Haohua Zhang
- Chongqing Key Laboratory of Manufacturing Equipment Design and Control, Chongqing Technology and Business University, Chongqing, China
| | - Yuan Fang
- Chongqing Key Laboratory of Manufacturing Equipment Design and Control, Chongqing Technology and Business University, Chongqing, China
| | - Xinxin Liang
- Chongqing Key Laboratory of Manufacturing Equipment Design and Control, Chongqing Technology and Business University, Chongqing, China
| | - Haifeng Gong
- Engineering Research Centre for Waste Oil Recovery Technology and Equipment of Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Yunqi Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, China
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Tian Y, Qi Y, Han H, Luo X, Guan J, Chen S, Wang H, Chen Y, Gong X. Resin transfer in oil-water interface intensified by H2O2 and demulsifier for efficient water separation in tight oil. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Xia X, Zhao Z, Cai W, Li C, Yang F, Yao B, Sun G. Effects of paraffin wax content and test temperature on the stability of water-in-model waxy crude oil emulsions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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49
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Gong H, Luo X, Peng Y, Yu B, Yang Y, Zhang H. Simulation on the influence of inlet velocity and solid separation gap on the separation characteristics of a separating device for three phases: oil, water and solid. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.11.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Jia H, He J, Wang Q, Xu Y, Zhang L, Jia H, Song L, Wang Y, Xie Q, Wu H. Investigation on novel redox-responsive ferrocenyl surfactants with reversible interfacial behavior and their recycling application for enhanced oil recovery. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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