Cellulose-coated magnetic Janus nanoparticles for dewatering of crude oil emulsions

He, Xiao1; Liu, Qingxia1; Xu, Zhenghe1,2

2021-02-02

10.1016/j.ces.2020.116215

CHEMICAL ENGINEERING SCIENCE   影响因子和分区

0009-2509

1873-4405

Removing process water from crude oil emulsions is critically required prior to their downstream processing. In this work, cellulose-coated magnetic Janus nanoparticles (MJ NPs) of asymmetric surface wettability were applied to dewatering crude oil emulsions under an applied magnetic field. Despite the emulsified water droplets stabilized by asphaltene film, the MJ NPs showed stronger interfacial activities, making more secure deposition at the interface as compared with interfacially active magnetic nanoparticles (IM NPs) of uniform surface modification. The MJ NPs could remove >90% water from the emulsions of different water contents, showing their robust dewatering ability. The spent MJ NPs were regenerated via standard washing, drying and resuspension process, and reused for at least six cycles while retaining excellent interfacial activities and high dewatering efficiency. Due to the coating of environmentally benign and biodegradable celluloses, the MJ NPs could achieve excellent dewatering without generating secondary hazards to the crude oil. (C) 2020 Elsevier Ltd. All rights reserved.

Magnetic Janus nanoparticles Surface wettability Celluloses Crude oil emulsions Dewatering

SCI ; EI

英语

通讯

Alberta Innovates-Energy and Environmental Solutions under the Industrial Research Chair Program in Oil Sands Engineering, from Leading Talents Program of Guangdong Province[K17253301] ; National Natural Science Foundation of China[21333005]

Engineering

Engineering, Chemical

WOS:000600281800006

PERGAMON-ELSEVIER SCIENCE LTD

20204509472659

Emulsification ; Magnetism ; Crude oil ; Emulsions ; Ostwald ripening ; Wetting ; Dewatering

Petroleum Deposits:512.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Cellulose, Lignin and Derivatives:811.3 ; Organic Polymers:815.1.1

CHEMISTRY

Web of Science

1.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

He, Xiao,Liu, Qingxia,Xu, Zhenghe. Cellulose-coated magnetic Janus nanoparticles for dewatering of crude oil emulsions[J]. CHEMICAL ENGINEERING SCIENCE,2021,230.

He, Xiao,Liu, Qingxia,&Xu, Zhenghe.(2021).Cellulose-coated magnetic Janus nanoparticles for dewatering of crude oil emulsions.CHEMICAL ENGINEERING SCIENCE,230.

He, Xiao,et al."Cellulose-coated magnetic Janus nanoparticles for dewatering of crude oil emulsions".CHEMICAL ENGINEERING SCIENCE 230(2021).