Assessing Pistia stratiotes for phytoremediation of silver nanoparticles and Ag(I) contaminated waters
| Autor: | Peng Zhang, Nicole Hanks, Joseph A. Caruso |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Silver
Environmental Engineering Metal Nanoparticles Wastewater Management Monitoring Policy and Law Plant Roots Silver nanoparticle Araceae Pistia Stratiotes Tissue Distribution Metal nanoparticles Water pollution Waste Management and Disposal biology Chemistry Water Pollution Environmental engineering food and beverages General Medicine Contamination biology.organism_classification Plant Leaves Phytoremediation Biodegradation Environmental Environmental chemistry Water Pollutants Chemical |
| Zdroj: | Journal of Environmental Management. 164:41-45 |
| ISSN: | 0301-4797 |
| DOI: | 10.1016/j.jenvman.2015.08.026 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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