Study on Adsorption and Desorption Performance of Direct Dyes on Anionic Exchange Membrane

Abstract:

The adsorption and desorption performance of C.I. Direct Red 13 and C.I. Direct Blue 6 on anionic exchange membrane were studied. The adsorption and desorption performances of anionic exchange membrane under different conditions were compared. The results showed that the adsorption accords with the pseudo-second dynamics model. Langmuir adsorption model could well describe adsorption processes. The addition of inorganic salt Na₂SO₄ in the dye solution had certain influence on the adsorption. The desorption percentage could reach above 80% using the mixture of ethanol, sodium chloride and water solution as desorbent, and the anionic exchange membrane could be reused.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 648-652
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.648
• Online since: July 2012
• Authors: Kai Hu, Jie Xu, Tie Ling Xing*, Guo Qiang Chen
• Keywords: Adsorption, Anionic Exchange Membrane, Desorption, Direct Dyes, Kinetic

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