Coalescence separation of oil water emulsion on amphiphobic fluorocarbon polymer and silica nanoparticles coated fiber-bed coalescer
文献类型：期刊论文
| 作者 | Zhang, Qian1,2,3; Li, Lei1,2,3; Cao, Lixia1,2; Li, Yanxiang1,2; Li, Wangliang1,2,3 |
| 刊名 | Chinese Journal of Chemical Engineering
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 36页码:29-37 |
| 关键词 | Separation - Coalescence - Nonionic surfactants - Wetting - Anionic surfactants - Cationic surfactants - Efficiency - Fibers - Contact angle - Emulsification - Hydrophobicity - Plastic coatings - Pore size - SiO2 nanoparticles - Emulsions |
| ISSN号 | 10049541 |
| DOI | 10.1016/j.cjche.2020.07.034 |
| 英文摘要 | Discharging untreated oily wastewater into the environment disrupts the ecological balance, which is a global problem that requires urgent solutions. Superhydrophilic and superoleophilic fibrous medium (FM) effectively separated oil鈥搘ater emulsion as it was hydrophobic underwater. But its separation efficiencies (SEs) first increased to 98.9%, then dropped to 97.6% in 10 min because of oil-fouling. To tackle this problem, FM deposited with 0%鈥?0% silica nanoparticle (NPsFMs), then coated by fluorocarbon polymer (X-[CH2CH2O]nCH2CH2O-Y-NH-COOCH2C4F9) (FCNPsFMs), was used to enhance its roughness and regulate its initial wettability to improve the anti-fouling property. FCFM and FCNPsFMs were hydrophobic and oleophobic in air and oleophobic underwater. Their water contact angles, oil contact angles and oil contact angles were 115.3掳鈥?21.1掳, 128.8掳鈥?36.5掳, and 131.6掳鈥?36.7掳, respectively, meeting the requirement of 90掳鈥?40掳 for coalescence separation. FCNPsFM-5 had the best separation performance with a constant value of 99.8% in 10 min, while that of FCNPsFM-10 slightly decreased to 99.5%. Theoretical released droplet (TRD) diameter, calculated by the square root of the product of pore radius and fiber diameter, was used for the evaluation of coalescence performance. Analyzed by two ideal models, TRD diameter and fiber diameter showed a parabola type relationship, proving that the separation efficiency was a collaborative work of wettability, pore size and fiber diameter. Also, it explained the SEs reduction from FCNPsFM-5 to FCNPsFM-10 was revelent to the three parameters. Moreover, FCNPsFMs effectively separated emulsions stabilized by cationic surfactant CTAB (SEs: 97.3%鈥?8.4%) and anionic surfactant SDBS (SEs: 91.3%鈥?3.4%). But they had an adverse effect on nonionic surfactant Tween-80 emulsion separation (SEs: 94.0%鈥?1.76%). Emulsions made by diverse oils can be effectively separated: octane (SEs: 99.4%鈥?00%), rapeseed oil (SEs: 97.3%鈥?8.8%), and diesel (SEs: 95.2%鈥?7.0%). These findings provide new insights for designing novel materials for oil鈥搘ater separation by coalescence mechanism. 漏 2020 Elsevier B.V. |
| 学科主题 | Silica Nanoparticles |
| 项目编号 | This work is supported by the National Key Research and Development Program of China under the contract number of 2017YFB0308000 , Program of Innovation Academy for Green Manufacture, CAS ( IAGM2020C04 ), the State Key Laboratory of Heavy Oil Processing ( SKLOP201903001 ) and Key Research and Development Program of Hebei Province, China ( 20374001D ). |
| 出版者 | Materials China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60280]  |
| 作者单位 | 1.Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing; 100190, China 2.CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 3.University of Chinese Academy of Sciences, Beijing; 100049, China |
| 推荐引用方式 GB/T 7714 | Zhang, Qian,Li, Lei,Cao, Lixia,et al. Coalescence separation of oil water emulsion on amphiphobic fluorocarbon polymer and silica nanoparticles coated fiber-bed coalescer[J]. Chinese Journal of Chemical Engineering,2021,36:29-37. |
| APA | Zhang, Qian,Li, Lei,Cao, Lixia,Li, Yanxiang,&Li, Wangliang.(2021).Coalescence separation of oil water emulsion on amphiphobic fluorocarbon polymer and silica nanoparticles coated fiber-bed coalescer.Chinese Journal of Chemical Engineering,36,29-37. |
| MLA | Zhang, Qian,et al."Coalescence separation of oil water emulsion on amphiphobic fluorocarbon polymer and silica nanoparticles coated fiber-bed coalescer".Chinese Journal of Chemical Engineering 36(2021):29-37. |
入库方式： OAI收割
来源：过程工程研究所
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