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Uptake of Uranium From Aqueous Solution by Nymphaea Tetragona Georgi: The Effect of the Accompanying Heavy Metals

Uptake of Uranium From Aqueous Solution by Nymphaea Tetragona Georgi: The Effect of the Accompanying Heavy Metals

Chen Li, Maolin Wang, Xuegang Luo

Appl Radiat Isot. 2019 Aug;150:157-163.

PMID: 31151070

Abstract:

This study evaluated the application value of Nymphaea tetragona Georgi (N. tetragona) in the remediation of water co-contaminated with U and the U-accompanying heavy metals (UAHMs). Under greenhouse conditions, a 5-factor quadratic regression orthogonal rotation combination design (QRORCD) was employed to set up a hydroponic experiment to evaluate the effect of U and UAHMs on the enrichment of U from water in N. tetragona. The results showed that the coexisting U and UAHMs tend to inhibit the amount of U enriched in the whole plant. Under co-contaminated conditions, Mn and Hg can increase the enrichment of U from water in N. tetragona, while Pb and As usually inhibit it. The predicted amount of U enriched in the whole plant (UWP) was 57,131.32 μg (1938.66 mg•kg-1 D.W.), and the validation result of the optimization scheme was 53,285.88 μg. A single-factor effect analysis showed that the influence of the 5 types of contamination on the UWP was in the order of U > Hg > Pb > Mn > As. The interactive effects analysis showed that the concentrations of U and As, Mn and As, and Pb and Hg all had significant interactive effects on the UWP, and the change trend exhibited a basin or saddle shape.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AS2121316	Uranium - WP			Price

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