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Magnetic demulsifier prepared by using one‐pot reaction and its performance for treating oily wastewater
Author(s) -
Fang Shenwen,
Zhu Ying,
Chen Bin,
Xiong Yan,
Duan Ming
Publication year - 2016
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22625
Subject(s) - demulsifier , fourier transform infrared spectroscopy , materials science , thermogravimetric analysis , polyacrylamide , chemical engineering , adsorption , polymer , ferric , nuclear chemistry , chemistry , polymer chemistry , organic chemistry , emulsion , composite material , metallurgy , engineering
In this study, a magnetic demulsifier, called M‐DMEA, was prepared by “one‐pot” synthesis through the pyrolysis of ferric triacetylacetonate (Fe(acac) 3 ) in DMEA 1231, which is a type of polyether demulsifier used in oil fields. The morphologies and phase compositions of the M‐DMEA nanoparticles were determined by transmission electron microscopy and X‐ray diffraction, respectively. The presence of surface coating was confirmed by using Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analyses (TGA). Magnetic property was measured by vibrating sample magnetometer. The demulsification of M‐DMEA for treating oily wastewater produced from polymer flooding (OWPF) was investigated. It was found that the oil removal of M‐DMEA reached 96.0 % at the concentration of 4.0 g/L. In addition, M‐DMEA can be recycled and reused by using an external magnet. The results showed that there was a significant decrease in the oil removal after two cycles because the polymer residue remaining in OPWF, namely partially hydrolyzed polyacrylamide (HPAM), was adsorbed onto the surface of M‐DMEA.