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EXTENDING THE GEOGRAPHIC REACH OF THE WATER HYACINTH PLANT IN REMOVAL OF HEAVY METALS FROM A TEMPERATE NORTHERN HEMISPHERE RIVER
Jones, J.L., R.O. Jenkins, and P.I. Haris.
Nature: Scientific Reports 8:11071(2018)

The potential of the invasive water hyacinth (Eichhornia crassipes) for cleanup of water from a highly polluted British river (Nant-YFendrod, a tributary of the River Tawe) was investigated at three levels: a bench-scale study using polluted river water and synthetic solutions; an in situ trial using water hyacinth within the Nant-Y-Fendrod; and a bankside trial to pump and treat river water. The removal of a large number of heavy metals (21) from water is reported, including Sb. Bench-scale tests achieved up to 63% removal of Al, 62% Zn, 47% Cd, 22% Mn, and 23% As during just 7 h exposure to the plant. With exposure extended to 3 weeks, removal occurred in the order Al > Cd > Zn > Mn > Ni > As, and in situ mean removal of 6% Mn, 11% Zn, and 15% Cd was demonstrated. https://www.nature.com/articles/s41598-018-29387-6.pdf
See additional information on this study at https://theconversation.com/invasive-tropical-plant-removed-metal-pollutants-from-british-river-new-study-100403.



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