Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Emission Characterization of Ammonia Produced from Swine Nightsoil

돈분뇨로부터 발생하는 암모니아의 배출 특성

  • Lee, Eun-Young (Department of Environmental Energy Engineering, The University of Suwon) ;
  • Lee, So-Jin (Department of Environmental Energy Engineering, The University of Suwon)
  • 이은영 (수원대학교 환경에너지공학과) ;
  • 이소진 (수원대학교 환경에너지공학과)
  • Received : 2010.06.08
  • Accepted : 2010.07.24
  • Published : 2010.09.28
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Abstract

This study was conducted to investigate the characteristics and concentrations of ammonia produced from the livestock swine nightsoil treated with or without the livestock - environment improving agents. Odor generating device made of acryl was made by volume of 96 L to sample the ammonia odor. When swine night soil was placed in the device, concentration of ammonia averaged out at about 23.4 ppmv and ranged from 16 ppmv to 40 ppmv. Removal efficiencies of them showed 50% to 90% as compared to initial level before spraying, when the spray type agents were used immediately after they purchased. The persistence of the efficiency was retained for first two days. Among the agents, the natural deodorant showed the best efficiency of 87 to 99%. To evaluate the effects of 5 kinds of dietary probiotic powders, the experiments were conducted and based dietary treatments without antibiotics on growing piglets. In experiments, 60 piglets ($6.3{\pm}0.2\;kg$) were subjected to a 35-day feeding trial in which the effects of the dietary probiotic powder on the ammonia emission were compared. The ammonia gas emission was measured for every week. Ammonia emission from the swine nightsoil obtained from piglets supplemented with the probiotics power was lower than that of the nightsoil obtained from pigs in the control treatment (without probiotics). In ammonia removal efficiencies of the experimental groups, some products showed from 71% to 99% removal efficiencies throughout the entire period as compared to the control group. On the other hand, initial reduction of ammonia in some product was effective temporarily. After then, it did not show any reduction efficiency of ammonia.

축산 악취물질인 암모니아가스를 대상으로 하여 환경개선제 사용시 자돈의 돈분뇨에서 발생되는 암모니아가스의 발생특성에 대한 연구를 수행하였다. 이 실험을 위하여 96 L의 부피를 가지는 아크릴 악취발생기를 제작하였다. 돈분으로부터 악취를 발생한지 한시간이 경과되면, 대략 평균 24.3ppmv의 암모니아가 발생되고, 범위는 16~40 ppmv였다. 실험결과 분무용 제제의 경우 분무 직후에 50~90%의 저감효과를 보였고, 1차 분무 시 지속성은 약 2일 정도로 나타났다. 천연탈취제의 지속성이 타 제품과 비교할 때 가장 우수하였다. 본 연구에서는 6구획의 실험구를 설정하였고, 5종류의 사료용 제제 첨가구와 일반 사료구에서 모두 항생제를 제외한 사료를 자돈에 급이하였다. 실험구엔 자돈($6.3{\pm}0.2\;kg$) 60마리를 대상으로 하여 각 구획당 10마리였으며, 총 35일간 실험이 진행되어 각 제제가 암모니아 방출에 미치는 영향을 일주일에 한번씩 살펴보았다. 사료용 제제를 급여한 자돈의 돈분에서의 암모니아 발생량은 일반사료만을 먹은 자돈의 돈분에서의 암모니아 발생량보다 낮았다. 사료용 제품중 효율이 우수한 제품은 7주 전 기간에 걸쳐 71~99%의 지속적 암모니아 저감효율을 보여주었으며, 일부 제품의 경우 초기 저감효율이 일시적이고 전기간에 걸쳐 전혀 암모니아 저감효율을 보여주지 않은 제품도 있었다.

Keywords

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