期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 185, 期 2-3, 页码 914-921出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2010.09.107
关键词
Adsorption; Desorption; p-Tert-butyl-calix[4,6,8]arene; Starch; Butyl Rhodamine B; Adsorption isotherm
资金
- National Natural Science Foundation of China [20773107, 20973151, 20901065]
- Natural Science Key Foundation of Educational Committee of Jiangsu Province of China [07KJA15015]
- Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [20093250110001]
- Foundation of Jiangsu Provincial Key Program of Physical Chemistry in Yangzhou University
- Foundation of the Educational Committee of Jiangsu Provincial Universities Excellence Science and Technology Invention Team in Yangzhou University
The adsorbents of starch grafted,p-tert-butyl-calix[4,6,8]arene-SGCn (SGC4, SGC6, SGC8) are prepared. The products are characterized by FTIR, elemental analysis, thermal gravimetric analysis and scanning electron microscope. Static adsorption behavior is studied by using SGC8 as adsorbent, butyl Rhodamine B (BRB) solution as simulation dye wastewater. The adsorption of BRB onto SGC8 fits the second order kinetic model and the apparent adsorption rate constant is 0.002 g mg(-1) min(-1) at 25 degrees C. The equilibrium adsorption data are interpreted using Langmuir and Freundlich models. The adsorption of BRB onto SGC8 is better represented by the Langmuir equation. The thermodynamic parameters for the adsorption reaction are calculated through van't Hoff analysis. The adsorbent may be easily regenerated by using ethanol solution as desorption agent to extract dye from SGC8. The rate of desorption of BRB is dependent on the concentration of ethanol and the temperature. SGC8 exhibits excellent adsorption and desorption properties toward dye molecule. The new-style adsorbent of SGC8 is regarded as a potential adsorbent to deal with dye or organic wastewater. (C) 2010 Elsevier B.V. All rights reserved.
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