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In-situ cadmium phytoremediation using solanum nigrum L. : the bio-accumulation characteristics trail

journal contribution
posted on 2011-01-01, 00:00 authored by P Ji, Y Song, T Sun, Y Liu, X Cao, D Xu, X Yang, Thomas Mcrae
In this study, Solanum nigrum L. was used in-situ for Cd phytoremediation in Cd polluted soil on Shenyang Zhangshi Irrigation area (SZIA) in 2008. The performance of the plant over the whole growth stage was assessed. Results showed, during the whole experimental stage, the aboveground biomass of single Solanum nigrum L. grew by a factor of 190, from 1.6 ± 0.4 g to 300.3 ± 30.2 g with 141.2 times extracted Cd increase from 0.025 ± 0.001 to 3.53 ± 0.16 mg. Both the distribution of biomass and amount of extracted Cd in the aboveground part of the plant changed according to the growth of the plant. Particularly, the percentage of biomass and extracted Cd in the stem increased from 20% to 80% and from 11% to 69%, respectively. The bioconcentration factor and transfer factor both varied significantly during the growth of the plant and the lowest values were measured at the flowering stage (0.94 ± 0.31 and 3.48 ± 1.14 respectively). The results in this paper provide reference values for the future research on the application of Solanum nigrum L. in phytoremediation and on chemical or/and agricultural strategies for phytoextraction efficiency enhancement.

History

Journal

International journal of phytoremediation

Volume

13

Issue

10

Pagination

1014 - 1023

Publisher

Taylor & Francis Inc.

Location

Philadelphia, Pa.

ISSN

1522-6514

eISSN

1549-7879

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2011, Taylor & Francis Group, LLC