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Adsorption of 2,4-Dichlorophenol on Meta-Aramid/Poly (acylic Acid) Composite Nanofibrous Membranes

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Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 610-613)

Pages:

551-555

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.610-613.551

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Online since:

December 2012

Authors:

Qi Jun Zhou*, Ran Xu

Keywords:

2,4-Dichlorophenol, Meta-Aramid, Nanofibrous Membranes, Polyacylic Acid

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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