Journal
APPLIED CLAY SCIENCE
Volume 74, Issue -, Pages 81-86Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2012.10.002
Keywords
Palygorskite; Chitosan; Surface grafting; Adsorption; Reactive dye; Composite
Funding
- National Natural Science Foundation of China [21275023]
- Youth Foundation of Changzhou University [ZMF10020059]
- Innovation Foundation for Enterprise of Jiangsu Province [BC2011162]
- Jiangsu Higher Institutions Key Basic Research Projects of Natural Science [09KJA430002]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Chitosan-modified palygorskite (CTS-modified PA) was prepared by surface grafting of PA with chitosan, and the CTS-modified PA was used as an effective adsorbent for the removal of reactive dye. The effects of various experimental parameters such as initial pH, adsorbent dosage, contact time and initial dye concentration on adsorption were investigated. The adsorption behavior of CTS-modified PA showed that the adsorption kinetics and isotherms were in good agreement with the pseudo-second-order equation and the Langmuir equation, and the maximum adsorption capacity of CTS-modified PA calculated by the Langmuir model was 71.38 mg g(-1), which was much higher than that of the unmodified PA (6.3 mg g(-1)). (C) 2012 Elsevier B.V. All rights reserved.
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