Sulfide emissions from different areas of a municipal solid waste landfill in China.
Degradation of municipal solid waste in landfills generates sulfide compounds, which are considered one of the main sources of odor emissions. Field sampling was conducted at surfaces of operating, inoperative, and soil-covered areas of a landfill site in northern China to characterize the sulfide compounds. The results showed that dimethyl disulfide dominated the sulfide compounds, accounting for up to 73.6% of the total detected sulfide. With the biggest odor concentration of 365, diethyl sulfide was the most significant sulfide compound. The estimated sulfide emission rates at surfaces of operating and soil-covered areas were similar, and the emission rate of dimethyl disulfide at Surface of Operating Area was up to 345.9 μg/m(3) h. Dimethyl disulfide could be released from the fresh waste, and its normalized concentration at 0.2 m beneath operating surface was 10.4 times that at 0.4 m.
Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Tsinghua University, Beijing 100084, China; School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: yuedb@tsinghua.edu.cn.
Dongbei
D
Yue
Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Tsinghua University, Beijing 100084, China; School of Environment, Tsinghua University, Beijing 100084, China.
Bing
B
Han
School of Energy & Environment, Shenyang Aerospace University, Shenyang 110136, China.
Yue
Y
Sun
Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Tsinghua University, Beijing 100084, China; School of Environment, Tsinghua University, Beijing 100084, China.
Ting
T
Yang
D000393:Air Pollutants / Q000032:analysis*; D002681:China; D002849:Chromatography, Gas; D004784:Environmental Monitoring; D013440:Sulfides / Q000032:analysis*; D064091:Waste Disposal Facilities
D000393:Air Pollutants; D013440:Sulfides
Emission; Landfill; Municipals solid waste; Sulfide