Application efficiency of nanoporous carbon sorbents modified with humic substances for removal of Zn2+, Cd2+, and Cu2+ ions (1000, 100, and 500 μg L−1, respectively) from water of a contaminated reservoir in the free-sedimentation mode was studied. The dynamics of the residual concentration of the metals in the volume of mesocosm water (V = 2000 L) and the effect of contamination on the productive activity of phytoplankton were evaluated in the course of a full-scale experiment. It was shown that, upon introduction of the sorbents (50 mg L−1, <0.1-mm fraction), their main mass settles on bottom in six days, which provides a fast decrease in the concentration of the metals in water. Subsequently, the concentration decreases due to the action of the renewable plankton channel. The degree of recovery of the metals from water on the nanoporous carbon material modified with humic acids reaches values of 90, 65, and 59%, for, respectively, Cu, Cd, and Zn in 16 days.
Russian Journal of Applied Chemistry – Springer Journals
Published: May 26, 2015
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