Influence of aeration on CH4, N2O and NH3 emissions during aerobic composting of a chicken manure and high C/N waste mixture.
Co-composting of chicken manure, straw and dry grasses was investigated in a forced aeration system to estimate the effect of aeration rates on NH(3), CH(4) and N(2)O emissions and compost quality. Continuous measurements of gas emissions were carried out and detailed gas emission patterns were obtained using an intermittent-aeration of 30 min on/30 min off at rates of 0.01 (A1), 0.1 (A2) and 0.2 (A3) m(3)min(-1)m(-3). Concentrations of CH(4) and N(2)O at the low aeration rate (A1) were significantly greater than those at the other two rates, but there was no significant difference between the A2 and A3 treatments. CH(4) and N(2)O emissions for this mixture could be controlled when the composting process was aerobic and ammonia emissions were reduced at a lower aeration rate. Comparison of CH(4), N(2)O, NH(3) emissions and compost quality showed that the aeration rate of the A2 treatment was superior to the other two aeration rates.
Shen
Yujun
Y
Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China. shenyj.09b@igsnrr.ac.cn
Ren
Limei
L
Li
Guoxue
G
Chen
Tongbin
T
Guo
Rui
R
D000332:Aerobiosis; D000393:Air Pollutants / Q000032:analysis / Q000737:chemistry*; D000641:Ammonia / Q000032:analysis / Q000737:chemistry*; D000818:Animals; D001673:Biodegradation, Environmental; D002244:Carbon / Q000737:chemistry; D002645:Chickens; D008372:Manure / Q000032:analysis*; D008697:Methane / Q000032:analysis / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D009585:Nitrogen Dioxide / Q000032:analysis / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D012987:Soil
D000393:Air Pollutants; D008372:Manure; D012987:Soil; D002244:Carbon; D000641:Ammonia; D009584:Nitrogen; D008697:Methane; D009585:Nitrogen Dioxide