Novel Janus magnetic micro particle synthesis and its applications as a demulsifier for breaking heavy crude oil and water emulsion

FUEL

卷:141

Article

Ali, Nisar¹  Zhang, Baoliang¹  Zhang, Hepeng¹  Li, Wei¹  Zaman, Wajed²  Tian, Lei¹  Zhang, Qiuyu¹ 

[1] Northwestern Polytech Univ, Sch Sci, Key Lab Appl Phys & Chem Space, Minist Educ, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Sch Mat Sci, Xian 710072, Peoples R China

关键词: Janus magnetic submicronic particles;    Heavy crude oil;    Emulsion;    Demulsifiers;   

DOI  :  10.1016/j.fuel.2014.10.026

来源: Elsevier

【 摘 要 】

This paper focuses on the synthesis of micro scale Poly(methylmethacrylate-acrylic acid-divinylbenzene) iron oxide Janus magnetic submicronic particles and the investigation of their interfacial properties and demulsifying capacity. The surface morphology, polymerization process and magnetic properties of the magnetic Janus submicronic particles were characterized by laser particle size analyzer, transmission electron microscopy, vibrating sample magnetometer. The interfacial activity and high hydrophilic nature of P(MMA-AA-DVB)/Fe3O4 Janus magnetic submicronic particles allowed them to be effectively attached to stable emulsified water droplets in heavy crude oil water emulsion. Janus magnetic submicronic particles tagged water droplets were readily removed by an external magnetic field. Our experimental results showed efficient removal of the water from the heavy crude oil emulsion. It was found that external magnetic field enhances the coalescence of magnetically tagged water droplets in an emulsion. The magnetic property of P(MMA-AA-DVB)/Fe3O4 allowed the used Janus magnetic submicronic particles to be readily recycled by magnetic separation and solvent washing. The recycled P(MMA-AA-DVB)/Fe3O4 was found to retain its interfacial activity and was effective in breaking the heavy crude oil water emulsion. This study demonstrated that Janus magnetic submicronic particles demulsification represented a new route of removing emulsified water from crude oil and water emulsions. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free