title: Endogenous mitigation of H2S inside of the landfills.
abstract: Vast quantities of hydrogen sulfide (H2S) emitted from landfill sites require urgent disposal. The current study focused on source control and examined the migration and conversion behavior of sulfur compounds in two lab-scale simulated landfills with different operation modes. It aimed to explore the possible strategies and mechanisms for H2S endogenous mitigation inside of landfills during decomposition. It was found that the strength of H2S emissions from the landfill sites was dependent on the municipal solid waste (MSW) degradation speed and vertical distribution of sulfide. Leachate recirculation can shorten both the H2S influence period and pollution risk to the surrounding environment. H2S endogenous mitigation may be achieved by chemical oxidation, biological oxidation, adsorption, and/or precipitation in different stages. Migration and conversion mainly affected H2S release behavior during the initial stabilization phase in the landfill. Microbial activities related to sulfur, nitrogen, and iron can further promote H2S endogenous mitigation during the high reducing phase. Thus, H2S endogenous mitigation can be effectively enhanced via control of the aforementioned processes.
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Fang
authors.affiliation: Zhejiang Environmental Science and Design Institute, Hangzhou, 310007, China.
authors.forename: Zhong
authors.initials: Z
authors.lastname: Zhong
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Shen
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Du
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China. longyy@zjgsu.edu.cn.
authors.forename: Yuyang
authors.initials: Y
authors.lastname: Long
mesh_terms: D000327:Adsorption; D052918:Environmental Restoration and Remediation; D006862:Hydrogen Sulfide / Q000737:chemistry*; D009584:Nitrogen; D062611:Solid Waste; D013440:Sulfides; D013455:Sulfur / Q000737:chemistry; D064091:Waste Disposal Facilities
chemical_list: D062611:Solid Waste; D013440:Sulfides; D013455:Sulfur; D009584:Nitrogen; D006862:Hydrogen Sulfide
keywords: Conversion; Endogenous mitigation; H2S; Landfill; Migration; Source control