Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 82, Issue -, Pages 8-12Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2012.05.002
Keywords
Azolla caroliniana; Fly ash pond; Heavy metals pollution; Phytoremediation
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Funding
- University Grants Commission (UGC), Government of India, New Delhi
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Abundance of naturally growing Azolla caroliniana (water fern) on the surface of metal enriched fly ash (FA) pond reflects its toxitolerant characteristics. Results indicate the efficiency of A. caroliniana for phytoremediation of FA pond because of its higher bioconcentration factor. The metal concentration ranged from 175 to 538 and 86 to 753 mg kg(-1) in roots and fronds, respectively. Bioconcentration factor (BCF) values of all metals in root and frond ranged from 1.7 to 18.6 and 1.8 to 11.0, respectively, which were greater than one and indicates the metal accumulation potential of A. caroliniana. Translocation factor (IF) ranged from 0.37 to 1.4 for various heavy metals. The field result proved that A. caroliniana is a potential accumulator for the examined heavy metals and can be used for phytoremediation of FA pond. (C) 2012 Elsevier Inc. All rights reserved.
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