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Published on: September 6, 2018
Anthropogenic N2O production from landfill leachate treatment
1State Key Laboratory for Bio-Control, and School of Life Sciences/School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China. linl@mail.sysu.edu.cn
Abstract:
The results of a field survey and laboratory study indicated that nitrogenous landfill leachate treatment can be a significant potential source of N2O emission. Nil (raw leachate) to 58.8ngmL(-1)h(-1) (sequential batch reactor) N2O emission was detected at five treatment plants in South China. The production and emission of N2O was especially high soon after the raw leachate was aerated. The emission was positively correlated with the dissolved N2O content in leachate; detected dissolved N2O ranged from 0 to 1309ngmL(-1). All leachate treatment plants studied were effective in NH4+-N removal (>95%); however, the highest N2O emission was estimated to be 0.25g N2Ocapita(-l)year(-1), comparable with the rate of N2O emission in conventional sewage treatment process.
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