Experimental study on PM2.5 removal by magnetic polyimide loaded with cobalt ferrate

Energy and Built Environment

卷:1

Ruge Wang¹  Yongfa Diao²  Bingwen Yang³  Fashan Zhou³  Teng Zhang³ 

[1] School of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China;

[2] Corresponding author.;

关键词: Magnetic polyimide;    Cobalt ferrite;    PM2.5;    Filtration performance;   

DOI  :  

来源: DOAJ

【 摘 要 】

A novel functional magnetic polyimide loaded with cobalt ferrite nanoparticles by coprecipitation method was proposed, and XRD, FTIR, SEM technologies were employed to study their physicochemical properties. The filtration performance of non-magnetic and magnetic polyimide were examined by experimental system. The effects of dust resistance, filtration velocity and initial dust concentration on the filtration performance of magnetic polyimide were investigated under different dust loadings. The results revealed that presence of ρ-л conjugation between the cobalt ferrite and polyimide fiber resulted in easily load on the fiber surface for cobalt ferrite nanoparticles. The magnetic polyimide exhibited good filtration efficiency especially in the range of particle size less than 2 µm. The filtration efficiency of magnetic polyimide filter materials increased by nearly 20% compared with the primary polyimide. Due to the loading of cobalt ferrite, the resistance of the magnetic polyimide increased, while the resistance growth rate decreased from 100% to 29% with increased filtration velocity from 0.5 m/min to 2.5 m/min.

【 授权许可】

Unknown