Demulsification of Crude Oil-in-Water Emulsions Driven by Graphene Oxide Nanosheets
文献类型：期刊论文
| 作者 | Liu, Juan1,2; Li, Xiaocheng3; Jia, Weihong1; Li, Zhiyun1,2; Zhao, Yapu4 ; Ren, Sili1
|
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 29期号:7页码:4644-4653 |
| 通讯作者邮箱 | slren@licp.cas.cn |
| ISSN号 | 0887-0624 |
| 产权排序 | [Liu, Juan; Jia, Weihong; Li, Zhiyun; Ren, Sili] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China; [Liu, Juan; Li, Zhiyun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Xiaocheng] Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China; [Zhao, Yapu] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Ren, SL (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China. |
| 中文摘要 | Seeking highly efficient, rapid, universal, and low-cost demulsification materials to break up the crude/heavy oil-in-water emulsion and emulsified oily wastewater at ambient conditions has been the goal of the petroleum industry. In this work, an amphiphilic material, graphene oxide (GO) nanosheets, Was introduced as a versatile demulsifier to break up the oil-in-water emulsion at room temperature. It was encouraging to find that the small oil droplets in the emulsion quickly coalesced to form the oil phase and separated with the water within a few minutes. The demulsification tests indicated that the residual oil in separated water samples was as low as similar to 30 mg/L, corresponding to a demulsification efficiency over 99.9% at an optimum GO dosage. More importantly, GO not only is useful for ordinary crude oil emulsion but also can be used to break up the extra heavy oil emulsion. The effect of the emulsion pH on the demulsification was also investigated. It was interesting to find that the. distribution of GO either in oil or in water phase after demulsification was dependent on the pH value of the solution, which was attributed to the pH-dependent amphiphilicity of GO. The prominent demulsification ability of GO was attributed to the strong adsorption between the GO nanosheets and molecules of asphaltenes/resins driven by pi-pi interactions and/or n-pi interactions. The findings in this work indicate that the GO nanosheets are a simple, highly efficient, and universal demulsifier to separate the oil from the crude/heavy oil-in-water emulsions at ambient conditions, which shows a good application prospect in the oil industry. |
| 英文摘要 | Seeking highly efficient, rapid, universal, and low-cost demulsification materials to break up the crude/heavy oil-in-water emulsion and emulsified oily wastewater at ambient conditions has been the goal of the petroleum industry. In this work, an amphiphilic material, graphene oxide (GO) nanosheets, Was introduced as a versatile demulsifier to break up the oil-in-water emulsion at room temperature. It was encouraging to find that the small oil droplets in the emulsion quickly coalesced to form the oil phase and separated with the water within a few minutes. The demulsification tests indicated that the residual oil in separated water samples was as low as similar to 30 mg/L, corresponding to a demulsification efficiency over 99.9% at an optimum GO dosage. More importantly, GO not only is useful for ordinary crude oil emulsion but also can be used to break up the extra heavy oil emulsion. The effect of the emulsion pH on the demulsification was also investigated. It was interesting to find that the. distribution of GO either in oil or in water phase after demulsification was dependent on the pH value of the solution, which was attributed to the pH-dependent amphiphilicity of GO. The prominent demulsification ability of GO was attributed to the strong adsorption between the GO nanosheets and molecules of asphaltenes/resins driven by pi-pi interactions and/or n-pi interactions. The findings in this work indicate that the GO nanosheets are a simple, highly efficient, and universal demulsifier to separate the oil from the crude/heavy oil-in-water emulsions at ambient conditions, which shows a good application prospect in the oil industry. |
| 分类号 | 二类/Q1 |
| 类目[WOS] | Energy & Fuels ; Engineering, Chemical |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | PI-PI INTERACTIONS ; WASTE-WATER ; HEAVY OIL ; BITUMEN EXTRACTION ; SPILL CLEANUP ; IONIC LIQUIDS ; STABILITY ; SANDS ; DESTABILIZATION ; PERFORMANCE |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1021/acs.energyfuels.5b00966 |
| 语种 | 英语 |
| WOS记录号 | WOS:000360026900070 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/55779]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Juan,Li, Xiaocheng,Jia, Weihong,et al. Demulsification of Crude Oil-in-Water Emulsions Driven by Graphene Oxide Nanosheets[J]. ENERGY & FUELS,2015,29(7):4644-4653. |
| APA | Liu, Juan,Li, Xiaocheng,Jia, Weihong,Li, Zhiyun,Zhao, Yapu,&Ren, Sili.(2015).Demulsification of Crude Oil-in-Water Emulsions Driven by Graphene Oxide Nanosheets.ENERGY & FUELS,29(7),4644-4653. |
| MLA | Liu, Juan,et al."Demulsification of Crude Oil-in-Water Emulsions Driven by Graphene Oxide Nanosheets".ENERGY & FUELS 29.7(2015):4644-4653. |
入库方式： OAI收割
来源：力学研究所
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