BIOLOGICAL TREATMENT OF SOME ESSENTIAL METALS BY USING CHLORELLA VULGARIS
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Date
2018
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Abstract
Heavy metal pollution is one of the most importantenvironmental problems today. Essential elements are the elementsthat are used in metabolic activities by organisms in order to sustaintheir lives. Nonexistence of this elements causes imbalance of thehomeostasis. Copper, zinc, cobalt, manganese and molybdenum areessential heavy metals that pose serious health hazards through entryinto the food chain by anthropogenic pathways. This study aimed todetermine the removal capacity for Cu (II), Co (II), Zn (II), Mo (VI) andMn (II) heavy metals from 0,5; 1; 2,5; 5 ve 10 ppm concentration ofaqueous solutions by using live C. vulgaris (Chlorophyta) microalgae.Experiments were performed using synthetic single-metal solutions ofCu, Co, Zn, Mo and Mn prepared from chemical reactants of analyticalgrade: CuSO4·5H2O, CoSO4·7H2O, ZnSO4·H2O, Na2MoO4.2H2O andMnCl2.4H2O, respectively. Based on the experimental data, the averageadsorption capacities for Cu(II), Co(II), Zn(II), Mo(VI) and Mn(II) were241.006, 238.120, 237.033, 223.396 and 54.899 mg/g by Chlorella cells,respectively. The obtained results showed that these biosorptionsystems using algal cells represent promising alternative for theremoval of heavy metal ions from polluted aqueous environments.