title: [Emissions of greenhouse gas and ammonia from sewage sludge composting by continuous aerated turning pile].
abstract: There is a lack of observation data on greenhouse gas (GHG) and ammonia emissions from sewage sludge composting, though the emissions can result in environmental issue and nitrogen loss. In this study, GHG and ammonia emissions were monitored under different operating parameters during sludge composting with continuous aerated turning pile at full scale. Results illustrated that the reduction of amendment addition could result in low organic matter transformation (1.38% and 8.85% for the test group and the control group, respectively). Though low C/N ratio might slightly increase the ammonia emission (8.68% higher than the control group), it was helpful to reduce both GHG emission (1.70 g x kg(-1)) DC for the test group and 2.85 g x kg(-1) DC for the control group, respectively) and total nitrogen loss (16.1% and 21.8% for the test and control groups, respectively). Through applying an aertion strategy in which the airflow rate was lower in the beginning and higher in the end of sludge composting, a higher GHG emission and a lower ammonia emission were observed in the test group, e. g., 55.1% higher of GHG emission than the control, and 66.86 g x m(-2) and 72.04 g x m(-2) of ammonia emission in the test and the control, respectively. And a good conversation of total nitrogen thus occurred in the test as a result of such aeration strategy, with only 51.34% of TN loss as compared to the control.
authors.forename: Chen-Yang
authors.initials: CY
authors.lastname: Zhao
authors.forename: Yuan-Song
authors.initials: YS
authors.lastname: Wei
authors.forename: Zhen
authors.initials: Z
authors.lastname: Ge
authors.forename: Jia
authors.initials: J
authors.lastname: Zhong
authors.forename: Xing
authors.initials: X
authors.lastname: Cai
authors.forename: Yuan-Li
authors.initials: YL
authors.lastname: Zhang
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Li
mesh_terms: D000641:Ammonia / Q000032:analysis*; D005740:Gases / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000737:chemistry*; D012987:Soil / Q000737:chemistry
chemical_list: D005740:Gases; D012722:Sewage; D012987:Soil; D000641:Ammonia; D009584:Nitrogen