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Lü T, Zhou S, Ma R, Qi D, Sun Y, Zhang D, Huang J, Zhao H. Demulsification Performance and Mechanism of Tertiary Amine Polymer-Grafted Magnetic Nanoparticles in Surfactant-Free Oil-in-Water Emulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1288-1298. [PMID: 36621519 DOI: 10.1021/acs.langmuir.2c03090] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Numerous cationic magnetic nanoparticles (MNPs) have previously been developed for demulsifying oil-in-water (O/W) emulsion, and results showed that the cationic MNPs could effectively flocculate and remove the negatively charged oil droplets via charge attraction; however, to the best of our knowledge, there are no research reports regarding the synergetic influence of both the positive charge density and interfacial activity of MNPs on the demulsification performance. In this study, three tertiary amine polymer-grafted MNPs, namely, poly(2-dimethylaminoethyl acrylate)-grafted MNPs (M-PDMAEA), poly(2-dimethylamino)ethyl methacrylate)-grafted MNPs (M-PDMAEMA), and poly(2-diethylaminoethyl methacrylate)-grafted MNPs (M-PDEAEMA), were synthesized and evaluated for their demulsification performance. Results demonstrated that a high positive charge density and superior interfacial activity of MNPs could cause partial oil droplet re-dispersion when excessive MNPs were introduced, leading to a lower magnetic separation efficiency and narrower demulsification window. Herein, a demulsification window is defined as a range of nanoparticle dosages in which the MNPs can effectively demulsify the O/W emulsion under certain conditions. For highly positively charged MNPs, their good interfacial activity could aggravate the formation of a narrower demulsification window. When tertiary amine polymer-grafted MNPs carried a lower positive charge density or weak interfacial activity, that is, M-PDMAEA at pH 4.0, M-PDMAEMA at pH 5.0-9.0, and M-PDEAEMA at pH 9.0-10.0, wide demulsification windows were observed. Additionally, a recycling experiment suggested that MNPs could maintain high demulsification efficiency up to at least five cycles, indicating their satisfactory recyclability. The three tertiary amine polymer-grafted MNPs can be potentially used for efficient demulsification from surfactant-free O/W emulsion in various pH ranges.
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Affiliation(s)
- Ting Lü
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China
| | - Shuangshuang Zhou
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China
| | - Ronggang Ma
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China
| | - Dongming Qi
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, Zhejiang, China
| | - Yangyi Sun
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, Zhejiang, China
| | - Dong Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China
| | - Jingang Huang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China
| | - Hongting Zhao
- School of Environmental and Chemical Engineering, Foshan University, Foshan 528011, Guangdong, China
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Ye F, Shen L, Liu S, Liu H, Zhang X, Zhang Z, Yang Y, Feng X, Tang Y, Xiang D, Mi Y, Yan X. Demulsification of amphiphilic gemini ionic liquids and its demulsification mechanism. CHEMOSPHERE 2022; 309:136650. [PMID: 36181854 DOI: 10.1016/j.chemosphere.2022.136650] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/07/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
This work aims to prepare two new amphiphilic and interfacial active gemini ionic liquids to treat crude oil and investigates its demulsification mechanism. Tetraethylene glycol was pretreated with thionyl chloride and used as a linker to connect succinimide or phthalimide, and then reacted with dodecyl benzene sulphonic acid to obtain the corresponding amphiphilic and interfacial active gemini ionic liquid STA or PTA, respectively. 1H nuclear magnetic resonance spectroscopy (1HNMR) and Fourier-transform infrared spectroscopy (FTIR) was used to determine the chemical structures. The demulsification tests showed the demulsification efficiency with 150 mg/L of STA or PTA at 60 °C for 30 min was 99.89% and 99.79%, respectively. Furthermore, the demulsification mechanism of STA and PTA were studied and the prominent demulsification ability of STA and PTA were attributed to the better interfacial activity and amphipathy which could destroy the asphaltenes interfacial film. These results showed that STA and PTA had excellent demulsification efficiency, which promised application in petroleum industry.
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Affiliation(s)
- Fan Ye
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Shi Liu
- Chuanqing Drilling Engineering Co. Ltd., China National Petroleum Corporation, Chengdu, 610051, PR China
| | - Huanyu Liu
- The Shale Oil Development Department of Longdong Area, The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Qingyang, 750000, PR China
| | - Xinyuan Zhang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Ying Yang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Yuqi Tang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Dong Xiang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China.
| | - Xuemin Yan
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China.
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Zhou J, Zhang X, He L, Sui H, Li X. Nano-modification of carboxylated polyether for enhanced room temperature demulsification of oil-water emulsions: Synthesis, performance and mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129654. [PMID: 35908401 DOI: 10.1016/j.jhazmat.2022.129654] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 07/07/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Oil-water emulsions separation is frequently required considering the production and environmental issues. Herein, a nano-modification strategy has been proposed for carboxylated poly(propylene oxide)-poly(ethylene oxide) block polyether (mANP) using epoxy-functionalized magnetic nanoparticles (Fe3O4@SiO2-GPTMS), achieving the construction of a highly efficient demulsifier (M-mANP). Bottle tests showed that M-mANP could separate over 98.5% of water from the asphaltene-stabilized water-in-oil (W/O) emulsion at mANP concentration of 150 ppm within 2 min at room temperature. The demulsification efficiency for crude oil-in-water emulsion was nearly 100%. According to interfacial tension and wettability tests, the nano-modification endows M-mANP with good amphiphilicity and high interfacial activity, which enables M-mANP to rapidly adsorb at the oil-water interface. Molecular dynamics simulation shows that abundant oxygen-containing groups (hydroxyl, ether bond, ester and carboxyl groups, Fe-O and Si-O bond) in M-mANP could strengthen the interaction with water, facilitating the replacement of asphaltene molecules at interfacial film. Observation of demulsification process by microscope reveals that the nano-size promotes M-mANP to bridge small dispersed droplets, enhancing the flocculation and coalescence of droplets. The nano-modified carboxylated polyether with outstanding demulsification ability shows a promising application for the treatment of different oil-water emulsions.
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Affiliation(s)
- Jingjing Zhou
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
| | - Xincheng Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
| | - Lin He
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre of Distillation Technology, Tianjin 300072, China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang 315201, China.
| | - Hong Sui
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre of Distillation Technology, Tianjin 300072, China.
| | - Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre of Distillation Technology, Tianjin 300072, China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang 315201, China
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Yan N, Yuan KY, Mei P, Lai L. Dynamic interfacial activity and dilational viscoelasticity of polyether demulsifiers at the oil/water interface. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Synthesis of modified natural polysaccharides for demulsification and corrosion inhibition. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Wang X, Wang N, Yuan S, Tang Q, Wang Y, Fang S, Duan M. Acrylate polymer prepared by dispersion polymerization and its crude oil emulsion demulsification performance. J Appl Polym Sci 2022. [DOI: 10.1002/app.52777] [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]
Affiliation(s)
- Xiujun Wang
- Beijing Research Center China National Offshore Oil Corporation Beijing China
- State Key Laboratory of Offshore Oil Exploitation Beijing China
| | - Naxiang Wang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Sisi Yuan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Qingqing Tang
- Beijing Research Center China National Offshore Oil Corporation Beijing China
| | - Yifan Wang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
- Industrial Hazardous Waste Disposal and Resource Utilization Research Institute Southwest Petroleum University Chengdu China
| | - Ming Duan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
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