期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 47, 期 5, 页码 583-589出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2010.07.014
关键词
Chitin; Copper; Iron; Isotherms; Sorption
资金
- Defence Research and Development Organization New Delhi India [ERIP/ER/0703670/M/01/1066]
Chitin (C) a biopolymer which showed moderate sorption capacity (SC) towards Cu(II) and Fe(III) was suitably modified to enhance the SC Three types of modifications viz protonated chitin (PC) carboxylated chitin (CC) and grafted chitin (GC) were carried out to increase the SC The modified forms of chitin showed enhanced SC for both Cu(II) and Fe(III) than the raw chitin These sorbents were characterized by the FTIR and SEM with EDAX analysis The various influencing parameters viz contact time pH and the Interference of common anions during the sorption have been investigated The sorption data was reasonably explained using Freundlich and Langmuir Isotherms The calculated values of thermodynamic parameters indicated that the sorption is spontaneous and endothermic in nature The order of selectivity of Cu(II) and Fe(III) on modified chitin was found to be Fe(III) > Cu(II) The suitability of modified chitin has been tested with the field samples collected in a near by industrial area The suitable mechanism for the respective metal removal has been established (C) 2010 Elsevier B V All rights reserved
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