Evaluation of Ammonia Emission from Liquid Pig Manure Composting System with Forced Aeration

돈분뇨의 호기적 액비화 과정에서 암모니아 휘산량 평가

  • Kim, Tae-Young (Division of Applied Life Science, Gyeonsang National University) ;
  • Kim, Song-Yeob (Division of Applied Life Science, Gyeonsang National University) ;
  • Chang, Hong-Hee (Research Institute of Life Science, Gyeongsang National University) ;
  • Yun, Hong-Bae (National Academy of Agricultural Science, RDA) ;
  • Lee, Yong-Bok (Division of Applied Life Science, Gyeonsang National University)
  • 김태영 (경상대학교 응용생명과학부) ;
  • 김송엽 (경상대학교 응용생명과학부) ;
  • 장홍희 (경상대학교 농업생명과학연구원) ;
  • 윤홍배 (국립농업과학원) ;
  • 이용복 (경상대학교 응용생명과학부)
  • Received : 2013.11.07
  • Accepted : 2013.12.16
  • Published : 2013.12.31


BACKGROUND: Composting is the most frequently used waste management process for animal manure in Korea's livestock industry. In the composting process, a large amount of nitrogen (N) is volatilized to the atmosphere as amonia ($NH_3$). However, quantitative information of $NH_3$ emission from composting of liquid manure is required to obtain emission factors for management of livestock manure in Korea. METHODS AND RESULTS: To evaluate the $NH_3$ emission from composting of liquid manure affected by aeration, we conducted composting of liquid pig manure with three forced aeration systems. The aeration conditions were continuous (A60), cycle of 30 min aeration and 30 min pause (A30S30) and without aeration(A0). All treatments were aerated 12 hour per day with these aeration systems. The total ratio of $NH_3$ volatilization loss to total N content in liquid manure throughout composting period was estimated to 19.9% for A0 treatment, 25.9% for A30S30 treatment and 36.3% for A60 treatment. The A30S30 and A60 aeration systems increased $NH_3$ volatilization by 30.2 and 82.3% compared with systems without forced aeration. CONCLUSION(S): Ammonia emission during liquid pig manure composting was highly affected by forced aeration. The development of liquid pig manure composting systems with forced aeration would be considered both reducing ammonia emission and efficiency of composting.


Supported by : Rural Development Administration


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