Anthropogenic Emissions of Reduced Sulfur Compounds from Municipal Landfill sanitary sites

城市垃圾填埋场卫生场所还原硫化合物的人为排放

• 批准号: 12650540
• 负责人: MURAO Naoto
• 金额: $ 2.3万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650540/
• 关键词: Reduced sulfur gas; Carbonyl sulfide; Carbon disulfide; Stratospheric Aerosols; Emission; Glibal warming; Landfill gas; 埋立地; 発生量; 含硫黄ガス総濃度測定

The gaseous sulfur compounds which produce sulfate aerosols in the atmosphere play an important role in various global environmental problems. In particular, carbonyl sulfide (COS) influences the stratospheric ozone destruction and the global warming through formation of the stratospheric aerosols. However, its contribution is not evaluated enough. Moreover, the evaluation of anthropogenic emissions of COS and carbon disulfide (CS2) which is the precursor of COS is insufficient.In this study, the contribution of COS to the formation of the stratospheric aerosols was reevaluated, and the emissions of reduced sulfur compounds from municipal landfill sanitary sites were measured. The main findings are as follows.・The results from 1-D model calculation indicate that the contribution of COS to the formation of the stratospheric aerosols has been increasing due to the recent decrease of the stratospheric ozone concentration.・The measurements of the landfill emissions of reduced sulfur compounds indicate that the landfill which contain biodegradable components emit large amount of reduced sulfur species. However, it was found that the landfill emission from industrialized nations contribute little to the global COS budget.

气态硫化物在大气中产生硫酸盐气溶胶，在各种全球性环境问题中起着重要作用。特别是羰基硫（COS）通过形成平流层气溶胶对平流层臭氧的破坏和全球变暖产生影响。然而，其贡献没有得到足够的评价。此外，对人为排放的COS和其前体物质二硫化碳（CS2）的评估还不够，本研究重新评估了COS对平流层气溶胶形成的贡献，并测量了城市垃圾填埋场还原硫化合物的排放量。主要发现如下。·一维模式计算结果表明，由于平流层臭氧浓度的降低，COS对平流层气溶胶形成的贡献在增加。对垃圾填埋场还原态硫化物排放的测定表明，含有可生物降解组分的垃圾填埋场释放出大量的还原态硫化物。然而，研究发现，工业化国家的垃圾填埋场排放对全球COS预算的贡献很小。