Effects of Hydroxyl Radicals on Introduced Organisms of Ship's Ballast Water Based Micro-Gap Discharge

摘要

With the physical method of micro-gap gas discharge, OH· radicals were produced by the ionization of O_2 in air and H_2O in the gaseous state, in order to explore more effective method totreat the ship's ballast water. The surface morphology of Al_2O_3 dielectric layer was analysed using Atomic Force Microscopy (AFM), where the size of Al_2O_3 particles was in the range of 2 μm to 5 μm. At the same time, the biochemical effect of hydroxyl radicals on the introduced organisms and the quality of ship's ballast water were studied. The results indicate that the main reasons of cell death are lipid peroxide and damage of the antioxidant enzyme system in Catalase (CAT), Peroxidase (POD) and Superoxide dismutase (SOD). In addition, the quality of the ballast water was greatly improved.