세라믹 다공체 표면에 발생하는 해양 생물 오손 억제에 관한 연구

Abstract

Department of Advanced Materials Engineering, Kyonggi University, Suwon 16227, Korea(Received September 25, 2015)(Revised October 12, 2015)(Accepted October 14, 2015)Abstract Recently, removing methods of red tide has been attempted by filtering the organisms using the ceramic porousbodies. However, the marine biofouling could be developed on the surfaces of porous ceramic body after use for morethan one month, and it might decrease the function of the specimen. In this paper, a method of inhibiting marinebiofouling by changing the physical properties or surface-modification of ceramic porous body was studied. Afterexperiment with six different ceramic porous bodies, it was found that the specimen of lower porosity and water absorptionshowed the least amount of biofouling. In addition, by increasing the surface roughness with silica particles bonded to thesurface of specimen, the amount of biofouling caused by large marine life such as barnacle and mussel could be decreased.On the other hand, when the surface of specimen was coated and fused by glass powder, the amount of biofouling wasrather increased. This might be due to eluted inorganic ions from the glass which can promote the growth of themicroorganism. In conclusion, the environmental-friendly methods to reduce the amount of marine biofouling, such ascontrolling the physical properties and the surface roughness of the porous ceramics, can be possible without the use ofdangerous substances. So it is expected for the results obtained to be applicable to a marine structure.Key wordsMarine, Biofouling, Microorganism, Porous ceramics, Porosity, Water absorption, Surface roughness, Glasscoating