Minimizing N2O fluxes from full-scale municipal solid waste landfill with properly selected cover soil.
Municipal solid waste landfills emit nitrous oxide (N2O) gas. Assuming that the soil cover is the primary N2O source from landfills, this study tested, during a four-year project, the hypothesis that the proper use of chosen soils with fine texture minimizes N2O emissions. A full-scale sanitary landfill, a full-scale bioreactor landfill and a cell planted with Nerium indicum or Festuca arundinacea Schreb, at the Hangzhou Tianziling landfill in Hangzhou City were the test sites. The N2O emission rates from all test sites were considerably lower than those reported in the published reports. Specifically, the N2O emission rate was dependent on soil water content and nitrate concentrations in the cover soil. The effects of leachate recirculation and irrigation were minimal. Properly chosen cover soils applied to the landfills reduced N2O flux.
Zhang
Houhu
H
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China.
He
Pinjing
P
Shao
Liming
L
Qu
Xian
X
Lee
Duujong
D
D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000517:prevention & control*; D002244:Carbon / Q000032:analysis; D002681:China; D004784:Environmental Monitoring; D009566:Nitrates / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D009609:Nitrous Oxide / Q000032:analysis*; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D012987:Soil / Q000032:analysis; D014867:Water / Q000032:analysis
D000393:Air Pollutants; D009566:Nitrates; D000644:Quaternary Ammonium Compounds; D012987:Soil; D014867:Water; D002244:Carbon; D009609:Nitrous Oxide; D009584:Nitrogen