| Laboratorial microcosm experiment was carried out to simulate the effects of cyanophytes bloom on the migration-release of
cadmium in sediment. Effects of cyanobacteria Microcystis (Microcystis aeruginosa) on the environmental conditions of the sediment-water interface (such as pH, dissolved oxygen, oxidation reduction potential) and sediment oxidation-reduction potentials at different depth have been studied to further analyze the impact of outbreaks of M. aeruginosa growth on migration-release of cadmium in sediments. The results showed that M. aeruginosa growth affected the interface conditions of pH and DO, changed the sediment oxidation-reduction potential at different depth, and increased cadmium proliferation rate from the sediments to the water system. M. aeruginosa could adsorb cadmium in surface water to affect the exchange of cadmium in sediment-water interface. |
