The demulsification of oily wastewater by a hyperbranched polymer grafted SiO2

被引：4

作者：

Zhang, Yu ^{[1
]}

Kuang, Jiazhe ^{[2
]}

Li, Bin ^{[3
]}

Mi, Yuanzhu ^{[2
]}

Yang, Ying ^{[2
]}

Feng, Xuening ^{[2
]}

机构：

[1] Hubei Minzu Univ, Sch Chem & Environm Engn, Enshi 445000, Peoples R China

[2] Yangtze Univ, Sch Chem & Environm Engn, Jingzhou, Peoples R China

[3] PetroChina Tarim Oilfield Co, Xinjiang Tarim Oilfield Construct Engn Co Ltd, Korla, Peoples R China

来源：

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2023年 / 44卷 / 04期

关键词：

Composite demulsifier; demulsification; oily wastewater; demulsification mechanism; EMULSIONS; NANOPARTICLES;

D O I：

10.1080/01932691.2021.1960167

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, a PAMAM@SiO2 demulsifier was synthesized by the reaction of a hyperbranched poly (amido amine) (PAMAM) and KH570 modified SiO2. The structure, morphology and composition of PAMAM@SiO2 were characterized by FT-IR, SEM and EDS. The effect of the concentration of PAMAM@SiO2, salinity and temperature on the demulsification performance was systematically studied. The results showed that the transmittance of aqueous phase after demulsification could reach as high as 92.1% at optimal conditions, and corresponding oil removal rate was 99.53%. Interfacial activity, three-phase contact angle, self-assembly of interfacial film and dynamic interfacial tension were investigated to explore the demulsification mechanism. Also, the aggregation process of oil droplets in emulsion was observed with a microscope. It indicates that the PAMAM@SiO2 demulsifier has a potential application in the treatment process of oily wastewater.

引用

页码：651 / 659

页数：9

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