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http://dx.doi.org/10.6111/JKCGCT.2015.25.5.218

Study on the control of marine biofouling developed on the surface of porous ceramics  

Kang, Jimin (Department of Advanced Materials Engineering, Kyonggi University)
Kang, Seunggu (Department of Advanced Materials Engineering, Kyonggi University)
Kim, YooTack (Department of Advanced Materials Engineering, Kyonggi University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.25, no.5, 2015 , pp. 218-224 More about this Journal
Abstract
Recently, removing methods of red tide has been attempted by filtering the organisms using the ceramic porous bodies. However, the marine biofouling could be developed on the surfaces of porous ceramic body after use for more than one month, and it might decrease the function of the specimen. In this paper, a method of inhibiting marine biofouling by changing the physical properties or surface-modification of ceramic porous body was studied. After experiment with six different ceramic porous bodies, it was found that the specimen of lower porosity and water absorption showed the least amount of biofouling. In addition, by increasing the surface roughness with silica particles bonded to the surface 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 was rather increased. This might be due to eluted inorganic ions from the glass which can promote the growth of the microorganism. In conclusion, the environmental-friendly methods to reduce the amount of marine biofouling, such as controlling the physical properties and the surface roughness of the porous ceramics, can be possible without the use of dangerous substances. So it is expected for the results obtained to be applicable to a marine structure.
Keywords
Marine; Biofouling; Microorganism; Porous ceramics; Porosity; Water absorption; Surface roughness; Glass coating;
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