title: Role of iron in H(2)S emission behavior during the decomposition of biodegradable substrates in landfill.
abstract: Hydrogen sulfide (H2S) is regarded as a major odor causing compound in landfill gas that may lead to adverse environmental and health effects. In this study, the potential role of iron in the entire life cycle of H2S production and emission was investigated during the decomposition of biodegradable substrates in the landfilled refuse. The results showed that the quantity of H2S emission decreased about 95% when Fe(OH)3 was present in the biodegradable sulfur-containing substrates. During this degradation process, a lot of sulfide was generated, which was present mostly as ferrous sulfide. In addition, a total of 7.68% S-H2S of total sulfur released as gas phase could be remained in solid-liquid phase effectively in the simulated substrates with iron. Thus, using the appropriate way to take advantage of iron "hidden" in the landfilled refuse might be a good choice for in situ control of H2S emission. Moreover, if this high level of iron is not presented, landfill odor pollution might become more serious.
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: Huan
authors.initials: H
authors.lastname: Feng
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: Kun
authors.initials: K
authors.lastname: Zhang
authors.affiliation: College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, China.
authors.forename: Li-Fang
authors.initials: LF
authors.lastname: Hu
authors.affiliation: School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China.
authors.forename: Cheng-Ran
authors.initials: CR
authors.lastname: Fang
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: Dong-Sheng
authors.initials: DS
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. Electronic address: longyy@zjgsu.edu.cn.
authors.forename: Yu-Yang
authors.initials: YY
authors.lastname: Long
mesh_terms: D000393:Air Pollutants / Q000737:chemistry; D001673:Biodegradation, Environmental; D019149:Bioreactors; D004784:Environmental Monitoring / Q000379:methods; D005740:Gases; D006862:Hydrogen Sulfide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D009812:Odorants; D012037:Refuse Disposal; D013440:Sulfides / Q000737:chemistry; D013455:Sulfur / Q000737:chemistry; D064091:Waste Disposal Facilities
chemical_list: D000393:Air Pollutants; D005740:Gases; D013440:Sulfides; D013455:Sulfur; D007501:Iron; D006862:Hydrogen Sulfide
keywords: Degradation; Hydrogen sulfide; Iron; Sulfur-containing substrates