Adsorption of 2,4-dichlorophenol on Meta-Aramid/Poly (acylic Acid) composite nanofibrous membranes

作者：Zhou, Qijun; Xu, Ran^*

来源：2nd International Conference on Energy, Environment and Sustainable Development (EESD 2012), Jilin, PEOPLES R CHINA, 2012-10-12 To 2012-10-14.

DOI：10.4028/www.scientific.net/AMR.610-613.551

• nanofibrous membranes
• meta-aramid
• polyacylic acid
• 2,4-dichlorophenol

Meta-aramid/poly (acylic acid) (PMIA/PAA) composite nanofibrous membranes with diameter between 50-100 nm have been fabricated by electrospinning method. The effect of contact time, temperature, pH and concentration of 2,4-dichlorophenol on the adsorption capacity of the membranes were investigated. The equilibrium adsorption capacity of 2,4-dichlorophenol on PMIA/PAA nanofibrous membranes is 251.61 mg/g. Acidic pH was favorable for the 2,4-dichlorophenol adsorption. Its desorption rate reached 74% in 45 min. After five regeneration cycles, the removal rate of 2,4-dichlorophenol still maintained above 65%. The adsorption of 2,4-dichlorophenol on the membranes fit the Freundlich isotherm model best. Its adsorption kinetics followed a pseudo-second-order model.

• 单位
  同济大学; 污染控制与资源化研究国家重点实验室