The fate of Cu, Zn, and Cd in the initial stage of water system contamination: The effect of phytoplankton activity

Title
The fate of Cu, Zn, and Cd in the initial stage of water system contamination: The effect of phytoplankton activity
Publication Type
Journal Article
Year of Publication
2010
Authors

Smolyakov BS, Ryzhikh AP, Romanov RE

Journal
Journal of Hazardous Materials
Volume
184
Pagination
819-825
ISBN Number
Keywords

Freshwater bodies, Contamination, Heavy metals, phytoplankton, Biosorption, Mesomodelling, mesocosm, 2 m3, Novosibirskoye Reservoir, Russia

Abstract
The fate of Cu, Zn and Cd after their entry into an unpolluted fresh water body was studied as a function of a condition of a natural phytoplankton community. In a field experiment, additives of metals entered into light and dark mesocosms twice to simulate effects of primary and repeated contamination. Over 31 days, the reproduction of new generation of a phytoplankton as renewable source of the suspended particles capable to metal biosorption was higher in a light mesocosm. As a result the residual concentration of metals in water decreased faster and their content in the settled deposits was higher in a light mesocosm, than in a dark mesocosm. Efficiency of planktonic channel in deducing of metals from water with settling deposits (in the order of Cu > Zn > Cd) depends on intensity of a phytoplankton reproduction in the initial stage of water ecosystem contamination.
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