Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 430, Issue -, Pages 8-12Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2013.03.064
Keywords
Graft copolymer; Fixed bed; Adsorption; Kinetics; Wastewater treatment
Categories
Funding
- Doctoral Foundation of Henan University of Technology [2009BS016, 2009BS039]
- Natural Science Foundation of Education Department of Henan Province [12B150007, 12A150006]
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The graft copolymer of cross-linked starch/acrylonitrile was used for the dynamic adsorption of the copper ions in water and the experiments were carried out with the fixed bed. The penetration standard curve obtained by the fixed bed adsorption-penetration curve method was the S-type. An equation of y = Y-0 + Ae(R0x) which demonstrated the change of the concentration with the bed volume was fitted. The corresponding technical parameters such as flow rate, inlet ion concentration and the bed height were investigated to find the optimal adsorption conditions for the column. The results showed that with the flow rate was getting smaller, the inlet ion concentration, the bed height and the adsorption performance were getting lower, higher and better, respectively. However, the adsorption rate of the adsorbent became lower. Under ambient temperature the adsorption kinetics equation for the graft copolymer adsorbing copper ions in water was described as q = (86.9054c + 41.9139c(2))tau((1.3285-0.5716c)). (C) 2013 Elsevier B.V. All rights reserved.
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