Use of Chitosan-modified Bentonite for Removal of Cu2+, Cl- and 2,4-Dichlorophenoxyacetic Acid (2,4-D) from Aqueous Solution
Batch experiments were performed to investigate the removal of Cu<sup>2+</sup> , Cl<sup>-</sup> , and 2,4-dichlorophe- noxyacetic acid (2,4-D) from aqueous solution using chitosan-modified bentonite. When the chi-tosan was loaded on the bentonite...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Croatian Society of Chemical Engineers
2014-07-01
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| Series: | Kemija u Industriji |
| Subjects: | |
| Online Access: | http://pierre.fkit.hr/hdki/kui/vol63/broj7-8/253.pdf |
| Summary: | Batch experiments were performed
to investigate the removal of Cu<sup>2+</sup> , Cl<sup>-</sup> , and 2,4-dichlorophe-
noxyacetic acid (2,4-D) from aqueous solution using chitosan-modified
bentonite. When the chi-tosan was loaded on the bentonite, the inter-layer
space of the montmorillonite increased and the adsorption efficiency enhanced,
as chitosan contains large numbers of -NH<sub>2</sub> and -OH functional
groups that could serve as coordination sites to bind heavy metals. In
this study, the bentonite that was prepared through three procedures:
Na<sub>2</sub>CO<sub>3</sub> treatment, thermal treatment and compound
treatment, was modified by chitosan. Experimental results demonstrated
that the average removal rates of Cu<sup>2+</sup> , Cl<sup>-</sup>, and 2,4-D effectively
were 94.87 %, 86.19 % and 91.06 %, respectively.<br> |
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| ISSN: | 0022-9830 1334-9090 |