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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Removal of copper(II) ions from aqueous solution by modified bagasse.
Journal of Hazardous Materials 2009 May 16
Bagasse-based ion adsorbent was prepared by chemically modifying bagasse with acrylonitrile and hydroxylamine with the aim to enhance the ability of removal heavy metal ions from wastewater. The purified modified materials were characterized by Fourier transform infrared (FT-IR). Batch experiments of Cu(II) ions (Cu(2+)) adsorption on the bagasse adsorbent were performed. Effects of the adsorbent dosage, initial pH of the solution, temperature of the Cu(2+) solution, and initial Cu(2+) concentration on the adsorption of Cu(2+) were studied, respectively. Langmuir and Freundlich models were applied to describe the adsorption isotherm of Cu(2+) by bagasse adsorbent. The results indicated that Langmuir model fitted the adsorption equilibrium data better than the Freundlich isotherm model. Two kinetic models, including pseudo-first-order and pseudo-second-order, were also used to analyze the Cu(2+) adsorption process, and the results showed that the pseudo-second-order with correlation coefficients greater than 0.999 was more suitable than pseudo-first-order.
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