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Title: Recyclable magnetic graphene oxide for rapid and efficient demulsification of crude oil-in-water emulsion
Author: Liu J; Wang HJ; Li XC; Jia WH; Zhao YP(赵亚浦); Ren SL
Source: FUEL
Issued Date: 2017
Volume: 189, Pages:79-87
Abstract: Graphene oxide (GO) nanosheets have been experimentally proved to be a highly efficiency, rapid and universal demulsifier to break up the crude oil-in-water emulsion and/or the emulsified oily waste water in our previous study. To recycle the GO nanosheets and avoid the possible contamination of GO for crude oil, in this work, the magnetic graphene oxide (M-GO) was successfully synthesized and used for separating oil/water emulsions. Demulsification tests indicated that M-GO could separate the oil/water emulsions within a few minutes and recycle 6-7 times without losing its demulsification capability. The residual oil content in the separated water was as low as similar to 10 mg/L, corresponding to a demulsification efficiency of 99.98% at an optimal dosage. Quantum chemical calculation results indicated that the pi-pi/sigma-pi interactions between GO materials and asphaltene molecules are the major driven forces for the high demulsification performance of M-GO nanosheets. This work not only provides a promising demulsifies to demulsify the crude oil-in-water emulsion or the oily wastewater but also give a deep understanding on the intrinsic interaction between demulsifiers and asphaltenes. (C) 2016 Elsevier Ltd. All rights reserved.
Keyword: Magnetic graphene oxide ; Demulsification ; Crude oil-in-water emulsion ; Recyclability ; Non-covalent interaction analysis
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Ren, SL (reprint author), Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China.
Correspondent Email: slren@licp.cas.cn
DOI: 10.1016/j.fuel.2016.10.066
Related URLs: 查看原文
DOC Type: 期刊论文
WOS Subject: Energy & Fuels ; Engineering, Chemical
WOS Subject Extended: Energy & Fuels ; Engineering
WOS Keyword Plus: Magnetic graphene oxide ; Demulsification ; Crude oil-in-water emulsion ; Recyclability ; Non-covalent interaction analysis
WOS ID: WOS:000387775500010
ISSN: 0016-2361
Funder: National Natural Science Foundation of China [51374195, 51574217]
Rank: [Liu, Juan; Wang, Huanjiang; Jia, Weihong; Ren, Sili] Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China; [Liu, Juan; Wang, Huanjiang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Xiaocheng] Chinese Acad Sci, 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
Department: LNM纳/微系统力学与物理力学
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/59947
Appears in Collections:非线性力学国家重点实验室_期刊论文

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