반암(맥반석)으로 제조한 다공성 펠렛의 Ag 담지 및 항균 메디아로서의 적용

초록

The porous pellets were prepared from porphyry by slurry foaming method. The effect of sintering temperatures on pore structure of porous porphyry pellets with different extension ratio (ER) was investigated by specific surface area, water absorption and porosity, which changed with sintering temperatures. When the sintering temperatures increased from 975°C to 1075°C, specific surface area and water absorption of the all samples decreased. In case of the sample with an equal sintering temperature, E R=3.0 pellets had little influence on pore structure compared to the ER=2.0 pellets. As a results, it was shown by SEM that facilitated formation of micro pores at ER=2.0 pellets shrunk increasingly after sintering process. At ER=3.0 and sintering temperature at 1025°C, optimum conditions of the porous porphyry porous pellets was found. Also, Escherichia coli removal efficiency of the silver-containing porphoyry porous pellets was measured for the feasibility as a antibacterial media. The antibacterial activity of prepared silvercontaining sample was maintained above 90% for 40 days.

키워드