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http://dx.doi.org/10.11626/KJEB.2016.34.2.116

Toxic Effects of Metal Plating Wastewater on Daphnia magna and Euglena agilis  

Lee, Junga (Department of Environmental Energy Engineering, Kyonggi University)
Park, Da Kyung (Department of Environmental Energy Engineering, Kyonggi University)
Publication Information
Korean Journal of Environmental Biology / v.34, no.2, 2016 , pp. 116-123 More about this Journal
Abstract
The ecotoxicity tests for metal plating wastewater were conducted using Daphnia magna (D. magna) and Euglena agilis (E. agilis). Evaluation for sources of toxicity was performed by 1) Correlation analysis between the concentration of individual metals in the metal plating wastewater and the toxic effects on D. magna, 2) Toxicant identification evaluation methods including graduated pH method, EDTA procedure and sodium thiosulfate procedure, 3) Comparison of toxic effect value ($EC_{50}$ or $LC_{50}$) of individual metal on D. magna and it's concentration in the metal plating wastewater. To evaluate the possibility of E. agilis, a Korean domestic organism, as a test model organism for metal plating waste water, E. agilis toxicity test was also assessed using on-line euglena ecotoxicity system (E-Tox system). Based on toxicant characterization test using D. magna, it was expected that SS, oxidants and heavy metals are responsible for toxicity of metal plating waste water. Especially Cu, Hg, and Ag were the major cationic metals that caused toxicity. E. agilis is less sensitive than D. magna based on the $EC_{50}$ value however it shows prompt response to toxic test substances. E. agilis shows even a significant effect on the cell swimming velocity within 2 min to toxic metal plating wastewater. Our study demonstrates that E. agilis test can be a putative ecotoxicity test for assessing the quality of metal plating waste water.
Keywords
ecotoxicity; Euglena agilis; metal plating; wastewater; domestic organism;
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Times Cited By KSCI : 5  (Citation Analysis)
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