Development of Silicon Nitride Porous Bodies with Micro-Macro Complex Pore Structure for the Application of the ‘Bio-Filter’

Abstract:

In order to develop the ‘Bio-filter’, Si3N4 porous bodies with micro-macro complex pore structure were fabricated. The micro-pores were successfully introduced by inserting PE meshes between the green tapes. Micro-pore size was controlled by adding a small amount of the β-Si3N4 ‘seed’ particles to the α-Si3N4 raw powder. It is expected that the aerobic microbes colonize along the micro-pores consuming dissolved oxygen, which makes the anaerobic ones colonized within the micro-pores to develop the microbe consortium. In this study, this concept was verified by using the S. cerevisiae and B. bifidum as the aerobic and anaerobic microbes, respectively.

• Periodical: Materials Science Forum (Volume 750)
• Pages: 332-335
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.750.332
• Online since: March 2013
• Authors: Wataru Ueta, Yoshio Ohta, Mikito Kitayama
• Keywords: Bio-Filter, Complex Pore Structure, Porous Material, Seed Particle, Silicon Nitride

References

[1] Encyclopedia of environmental technology and equipment, Sangyo-chosakai (2003), pp.117-25.

[2] A.M. Garcia D.A. Moreno and C. Ranninger: J. Am. Ceram. Soc. Bull., Vol. 83 (2004), p.18.

[3] H. Horitsu: Ceramics, Vol. 24 (1989), p.628.

[4] T. Anan, M. Kitayama and Y. Ohta: J. MMIJ, 124 (2008), 245-48.

[5] K. Hirao, M. Ohashi, M. E. Brito and S. Kanzaki: J. Am. Ceram. Soc., 78(1995), pp.1687-90.

[6] T. Ostrowski and J. Rödel: J. Am. Ceram. Soc., 82(1999), 3080-86.