Abstract
Imnmobilization characteristics of Thiobacillus sp. IW which oxidizes sulfur compound was studied to use the bacterium in odor controlling equipment for the future. The optimum growth conditions for Thiobacillus sp. IW were pH7, $30^{\circ}C$ and the generation time was 38min, which was extremely fast compared with other sulfur oxidizing bacteria. Optimum growth conditions in activated carbon as a carrier was pH5, $35^{\circ}C$ and those in bioceramics was pH 7∼8, $35^{\circ}C$. Cell growth immobilized in bioceramics was more stable in pH, temperature change than that immobilized in activated carbon and total number of cells in bioceramics were also higher. Based on these results, the bioceramics is thought to be better carrier in immobilization of Thiobacillus sp. IW.
황산화박테리아인 Thiobacillus sp. IW를 사용한 황함유악취 제거장치를 제작하기 위한 기초자료로서 균의 최적성장조건, 활성탄과 bioceramics에서의 고 정화특성을 조사하였다. Thiobacillus sp. IW는 최척 성장조건이 pH 7, $30^{\circ}C$이고, 이때 세대시간이 38 분으로 다른 황산화균에 비해 아주 빠른 성장속도를 보여주었다. 균의 최적성장조건은 활성탄을 담체로 사용할 경우 pH 5, $35^{\circ}C$였으며, bioceramic의 경우 pH 7~8, $35^{\circ}C$로 액상배양시와는 상이한 성장조건 을 보여주었다. pH, 온도의 변화에 대한 균의 성장은 활성단보다 bioceramics에서 보다 안정적이었고, 총균수도 많았다. 전체적으로 균의 성장속도면에서 는 bioceramics가 활성탄보다 우수한 담체로 사료된다.