| 석탄회를 이용한 미생물 고정화 세라믹 담체 제조 |
| 신대용, 한상목1, 최신건2 |
강원대학교 석재복합 신소재제품 연구센터
1강원대학교 신소재공학과
2강원대학교 바이오산업공학부 |
| Synthesis of Ceramic Support for Immobilization of Microorganisms Using Fly Ash |
| Dae-Yong Shin, Sang-Mok Han1, Shin-Geon Choi2 |
Research Center for Advanced Mineral Aggregate Composite Products, Kangwon National University
1Department of Advanced Materials Engineering, Kangwon National University
2School of Biotechnology and Bioengineering, Kangwon National University |
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| ABSTRACT |
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Porous ceramic supports with immobilized microorganisms for the water purifier were synthesized by firing green compacts of mixed powder comprising of fly ash, bentonite and an additive of yeast powder at 800∼1,000$^{circ}C$ for 1h and the pore and mechanical properties of specimens were investigated. The compressive strength was increased in FB (Fly Ash + Bentonite) specimens while pore properties was decreased with increasing the bentonite content and sintering temperature. The compressive strength, bulk density, apparent density, porosity, mean pore size, pore volume and specific surface area of FB specimens at 800∼1,000$^{circ}C$ were 89.6∼128.9 kgf/$cm^2$, 1.25∼1.43, 1.61∼1.78, 27.2∼62.2%, 7.9∼25.6 ${mu}m$, 8.9∼$22.2{times}10^{-5};cm^3/g$ and 35.2∼134.3 $m^2/g$, respectively. The pore properties of FBY (FB+yeast powder) specimens were superior to that of FB specimens, however compressive strength was decreased with increasing yeast powder content. The overall properties of 9F1B1Y (9F1B+10% of yeast powder) specimens at 900$^{circ}C$ for 1 h were 98.7 kgf/$cm^2$, 1.20, 1.67, 68.1%, 48.9 ${mu}m$, $29.5{times}10^{-5};cm^3/g$ and 152.2 $m^2/g$, respectively. In this study, it was revealed that 9F1B1Y specimen demonstrated better S. saprophyticus adherence properties n their surface pores. Consequently, the microorganisms immobilized on porous ceramic supports showed better water purifying performance with many pores and adequate strength. |
| Key words:
Immobilization of microorganisms, Porous ceramic support, Fly ash, Bentonite, Yeast powder, Water purifier |
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