Assessing Pistia stratiotes for phytoremediation of silver nanoparticles and Ag(I) contaminated waters

Journal of Environmental Management
Nicole A HanksPeng Zhang

Abstract

To study the phytoremediation capabilities of Pistia stratiotes in silver nanoparticle (AgNP) and silver ion contaminated wastewaters, individual plants were grown in media spiked with different concentrations of silver nanoparticle and silver ions (0.02, 0.2, and 2 mg L(-1)). Control experiments were carried out at the same time for comparison purposes. Visual changes in the plants were also recorded periodically during each experiment. Total silver concentrations were monitored in the media before, during, and at the termination of the experiments. In addition, analysis of total silver in plant root and leaf samples after termination were carried out to determine the effect of the different media concentrations. The results showed that P. stratiotes can survive in AgNP and ions under 0.02 mg L(-1) and contaminants are retained within the plant. The use of P. stratiotes as a phytoremediator shows potential in removing heavy metal nanoparticles and is competitive in its removal of the ion counterpart. Even higher concentrations of silver, regardless of form, can be reduced to lower levels than the World Health Organization's maximum contamination limit.

References

Sep 28, 2000·Journal of Experimental Botany·E Steudle
Sep 16, 2010·Environmental Science & Technology·Bojeong KimMichael F Hochella
Aug 13, 2013·Environmental Health Perspectives·Talia E Abbott ChalewKellogg J Schwab

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Citations

Apr 25, 2017·International Journal of Phytoremediation·Şeyda Fikirdeşici Ergen, Esra Üçüncü Tunca
Jun 29, 2018·Environmental Science and Pollution Research International·Mujahid FaridWasim Ashraf

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