용액 내 플라즈마 반응을 이용한 아세틸살리실산 분해 연구

Abstract

In this work, the plasma reaction in solution was applied to decompose acetylsalicylic acid, a nonsteroidal anti-inflammatory drugs detected in water and soil environment. In particular, the effects of electrical energy supply conditions and oxidation additives as hydrogen peroxide on the decomposition reaction rate of acetylsalicylic acid were evaluated. The amount of active species such as hydroxyl radicals and oxygen radicals generated by plasma reaction was determined by the electrical operating parameters. By increasing the electrical operation parameter, the decomposition rate constants of acetylsalicylic acid were proportionally increasing. The addition of hydrogen peroxide into solution showed the positive effect in decomposing the acetylsalicylic acid because the hydrogen peroxide promoted the generation of hydroxyl radical. On the other hands, the excess of hydrogen peroxide could occur the scavenger effect that formed the recombination of hydroxyl radical so that the decomposition rate of acetylsalicylic acid was decreased.