Characterrictics of bioaccumulation of DDT by Microcystis aeruginosa in water

Currently synergistic pollution occurs in the presence of cyanobacteria and synthetic organic compound in water body. Consequently, it is of great significance to reveal the partition of persistent organic pollutants in water phase and algae phase for understanding mechanisms of partition and transformation of persistent organic pollutants in natural water environment. In this study bioaccumulation processes of DDT in Microcystis aeruginosa were investigated experimentally, and effect of HA concentrations and pH on the bioaccumulation effectiveness of DDT in Microcystis aeruginosa was also studied. Results showed that if DDT concentration was less than 100^g / L, DDT removal efficiency will be above 70% The presence of humic acid in water will impede bioaccumulation of DDT by Microcystis aeruginosa. When the pH value is between 8.5 and 9.5, the best bioaccumulation effectiveness could be reached. Therefore under suitable conditions removal efficiency of synthetic organic compound could be effectively improved when algae was removed from natural water body.