Characterization of the Binding Interaction between Poly(Epicholorohydrin-Diamine) and Reactive Dyes using a Multiple Linear Regression and Quartz Crystal Microbalance Methods

Authors: Kang, Qi; Cai, Hongmei; Shen, Dazhong

Source: Separation Science and Technology, Volume 42, Number 16, December 2007 , pp. 3759-3776(18)

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Abstract:

The binding processes of Reactive Red K-2BP (K-2BP) and Reactive Violet K-3R (K-3R) onto poly(epicholorohydrin-diamine)(PEPIDA) in solution and film were investigated by spectrophotometric and quartz crystal microbalance (QCM) methods, respectively. By using a multiple linear regression technique, the concentrations of the colored components in the mixtures of dye+PEPIDA were measured simultaneously from the absorbance spectra. The binding equilibrium constants for K-3R and K-2BP onto PEPIDA in solution were estimated to be 9.31×106 and 1.86×106 L · mol-1, respectively. The difference in the color removal between K-3R and K-2BP by PEPIDA was discussed. The binding processes of K-3R and K-2BP onto PEPIDA film were followed by the QCM. The binding equilibrium constants were evaluated to be 1.27×106 and 3.28 ×105 L · mol-1 for K-3R and K-2BP onto PEPIDA film, respectively. They are less than those determined in PEPIDA solutions. The binding rate constants for K-3R and K-2BP onto PEPIDA film were estimated to be 1.43×105 and 1.72×105 L · mol-1 · s-1, respectively.

Keywords: Color removal; polyelectrolyte; binding constant; reactive dye

Document Type: Research article

DOI: http://dx.doi.org/10.1080/01496390701511416

Affiliations: 1: College of Chemistry, Chemical Engineering and Materials Science, Engineering Research Center of Pesticide and Medicine Intermediate Clean Production, Ministry of Education, Shandong Normal University, Jinan, P. R. China

Publication date: 2007-12-01