한국폐기물자원순환학회지 (Journal of Korea Society of Waste Management)

  • 제23권4호
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  • Pages.337-343
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  • 2006
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  • 2093-2332(pISSN)
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  • 2287-5638(eISSN)
한국폐기물자원순환학회 (Korea Society of Waste Management)
권호 표지

미생물 고정화 복합고분자 담체를 이용한 가스상 암모니아 제거

Removal of Ammonia by Immobilized Microorganisms in Complex Polymer Beads

송지현;함은이
Song, Ji-Hyeon;Ham, Eun-Lee

  • 발행 : 20060000
⟨ 이전 논문 다음 논문 ⟩

초록

A novel packing material for vapor-phase biofilter applications was developed and tested in order to improve performance of biofilters treating malodorous compounds. The packing material, where active microbial cultures were entrapped in a mixture of hydrogel polymers consisted of alginate and polyvinyl alcohol (PVA), was immobilized in the presence of borate and Ca ions at a neutral pH condition. In this study, two identical biofilters, one packed with compost and the other with the new complex polymer biomedia, were operated using gaseous ammonia as a model compound. The biofilter packed with compost showed better performance initially at low loading rates, but the removal efficiency dropped as the loading rate increased. Contrarily, the performance of the complex polymer biomedia improved gradually even when high ammonia loadings were applied, indicating that the microorganisms immobilized in the biomedia needed an adaptation period. The maximum elimination capacity for ammonia was found to be 46 g-N/m3/hr in the biomedia, which was greater than that of compost and others reported in the literature. In addition, the biomedia rapidly restored a high removal efficiency when subjected to a sudden increase in ammonia loading. Overall, the complex polymer biomedia improved biological capacity of biofilters by immobilizing ammonia-oxidizing microorganisms, and are expected to be an effective alternative over the conventional packing materials.

키워드

참고문헌

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