Bioaccumulation of Uranium and Thorium by Lemna minor and Lemna gibba in Pb-Zn-Ag Tailing Water

Abstract

This study focused on the ability of Lemna minor and Lemna gibba to remove U and Th in the tailing water of Keban, Turkey. These plants were placed in tailing water and individually fed to the reactors designed for these plants. Water and plant samples were collected daily from the mining area. The plants were ashed at 300°C for 1 day and analyzed by ICP-MS for U and Th. U was accumulated as a function of time by these plants, and performances between 110 % and 483 % for L. gibba, and between 218 % and 1194 % for L. minor, were shown. The highest Th accumulations in L. minor and L. gibba were observed at 300 % and 600 % performances, respectively, on the second day of the experiment. This study indicated that both L. gibba and L. minor demonstrated a high ability to remove U and Th from tailing water polluted by trace elements.

Potential of Duckweed (Lemna minor) for the Phytoremediation of Landfill Leachate

“…e results of this study demonstrated that accumulation of Pb increased with the increase in concentration and duration of exposure. Results for accumulation of Pb are in line with the earlier studies on di erent aquatic plants like Wol a arrhiza, [49] Najas indica, [50] C. demersum, [51] Lemna minor, and Lemna gibba [52]. Uptake of iron by L. minor was increased gradually till the 12th day of experiment and exhibited a declining trend thereafter.…”

Features of the effect of copper and strontium ions on the laboratory culture of duckweed (Lemna minor L.)

“…Следовательно, избыток меди может вызвать окислительный стресс у растений, увеличение содержания высокотоксичных свободных радикалов, изменения в активности и содержании некоторых антиоксидантов (De Vos et al, 1992;. Высокий уровень окислительного стресса приводит к повреждению клеточных мембран, фотосинтетических пигментов, белков, нуклеиновых кислот и липидов, в конечном итоге к гибели клетки (Sasmaz, 2016). Окислительный стресс является причиной перекисного окисления липидов (ПОЛ), возникает целый каскад последовательных свободнорадикальных реакций с образованием различных химических соединений (спиртов, альдегидов, кетонов), обладающих высокой биологической активностью и токсичностью.…”

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

“…Metal uptake (MU), translocation/transfer factor (TF), bioconcentration factor (BCF), Percent metal uptake (% MU), Removal capacity (RC) and Toxicity index (TI). These models are repeatedly used in aquatic phytoremediation studies of metals in aqueous medium [48,156,177,175,176,141,155,44,143,165,158,146,137,166,167,168,171,172,148,139,150,173,210,211] and can also be used in organic pollutant remediation studies.…”