title: Migration of nitrate, nitrite, and ammonia through the municipal solid waste incinerator bottom ash layer in the simulated landfill.
abstract: Simulated landfill was operated for 508 days to investigate the effect of municipal solid waste incinerator (MSWI) bottom ash layer on the migration of nitrate, nitrite, and ammonia when it was used as the intermediate layer in the landfill. The result suggested that the MSWI bottom ash layer could capture the nitrate, nitrite, and ammonia from the leachate. The adsorption of the nitrate, nitrite, and ammonia on the MSWI bottom ash layer was saturated at the days 396, 34, and 97, respectively. Afterwards, the nitrogen species were desorbed from the MSWI bottom ash layer. Finally, the adsorption and desorption could reach the equilibrium. The amounts of adsorbed nitrate and nitrite on the MSWI bottom ash layer were 1685.09 and 7.48 mg, respectively, and the amount of the adsorbed and transformed ammonia was 13,773.19 mg, which was much higher than the desorbed. The water leaching test and synthetic precipitation leaching procedure (SPLP) results showed that the leachable nitrate, nitrite, and ammonia in the MSWI bottom ash were greatly increased after the landfill operation, suggesting that the adsorbed nitrogen could be finally leached out. Besides, the results also showed that MSWI bottom ash layer could affect the release of nitrate and ammonia at the initial stage of the landfill. However, it had little effect on the release of nitrite.
authors.affiliation: Center of Marine and Ecological Environment Protection, Taizhou University, Linhai, 317000, China.|Department of Environmental Engineering, Zhejiang University, Hangzhou, 310029, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Yao
authors.affiliation: Center of Marine and Ecological Environment Protection, Taizhou University, Linhai, 317000, China.
authors.forename: Luxi
authors.initials: L
authors.lastname: Chen
authors.affiliation: Center of Marine and Ecological Environment Protection, Taizhou University, Linhai, 317000, China.
authors.forename: Huayue
authors.initials: H
authors.lastname: Zhu
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Zhejiang Gongshang University, Hangzhou, 310018, China.
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Shen
authors.affiliation: Center of Marine and Ecological Environment Protection, Taizhou University, Linhai, 317000, China. 13958559929@163.com.
authors.forename: Zhanhong
authors.initials: Z
authors.lastname: Qiu
mesh_terms: D000641:Ammonia; D060729:Coal Ash; D017745:Incineration; D009573:Nitrites; D012037:Refuse Disposal; D062611:Solid Waste; D064091:Waste Disposal Facilities
chemical_list: D060729:Coal Ash; D009573:Nitrites; D062611:Solid Waste; D000641:Ammonia
keywords: Ammonia; MSWI bottom ash layer; Migration; Nitrate; Nitrite; Release