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Silver Coating on the Porous Pellets from Porphyry Rock and Application to an Antibacterial Media

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

  • Han, Yo-Sep (Department of Geoenvironmental System Engineering, Hanyang University) ;
  • Kim, Hyun-Jung (Department of Chemical and Environmental Engineering, University of California) ;
  • Shin, Young-Seop (Department of Geoenvironmental System Engineering, Hanyang University) ;
  • Park, Jai-Koo (Department of Geoenvironmental System Engineering, Hanyang University) ;
  • Ko, Jae-Churl (Graduate School of Knowledge Based Technology and Energy, Korea Polytechnic University)
  • 한요셉 (한양대학교 지구환경시스템공학과) ;
  • 김현중 ;
  • 신영섭 (한양대학교 지구환경시스템공학과) ;
  • 박재구 (한양대학교 지구환경시스템공학과) ;
  • 고재철 (한국산업기술대 에너지대학원)
  • Published : 2009.01.31

Abstract

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 ($E_R$) was investigated by specific surface area, water absorption and porosity, which changed with sintering temperatures. When the sintering temperatures increased from $975^{\circ}C$ to $1075^{\circ}C$, 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 $E_R=2.0$ pellets. As a results, it was shown by SEM that facilitated formation of micro pores at $E_R=2.0$ pellets shrunk increasingly after sintering process. At $E_R=3.0$ and sintering temperature at $1025^{\circ}C$, 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 silver-containing sample was maintained above 90% for 40 days.

Keywords

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