SGER: Nitrogen Oxide Flux from Sludge-Amended Soil

9727886皮尔斯该奖项旨在支持一项研究项目的探索阶段，该研究项目旨在确定土地利用污泥对对流层低层臭氧污染的影响。研究人员将进行实验室实验，以确定在没有氮素改良剂的情况下，农业土壤中活性氮氧化物在土壤中的通量，这些土壤已经用污泥和经过化学肥料的土壤进行了改良。要调查的土壤将从农业用地中获得，与目前用于土地利用污泥的土壤相当。污泥将从北卡罗来纳州的教堂山污水处理厂获得。实验室实验的结果将与实地研究的结果进行比较，以确定需要进行的额外研究的范围，以将现有关于活性氮氧化物从天然土壤和化肥土壤到用于污泥管理的土壤的通量的知识联系起来。导致这一奖项的提案是根据NSF 95-27《拨款提案指南》中的探索性研究小额拨款特别指南(SGER)提交的。目前，有关天然和化肥土壤中氮氧化物的生产、运输和排放的条件已得到很好的界定。最近对积极利用土地进行污泥管理的强调表明，确定这种知识是否足以确定这些土壤的氮氧化物排放特征及其在促进大气臭氧排放和形成方面的作用。预计这一项目的结果将用于确定是否需要进一步研究，以指导污泥管理的土地应用系统的工程设计，以及在什么条件下可以最大限度地减少或消除来自这一来源的空气污染。***

9727886 Peirce This is an award to support the exploratory phase of a research project to determine the impact that land application of sludge has on ozone pollution in the lower levels of the troposphere. The investigator will conduct laboratory experiments to determine the flux of reactive nitrogen oxide from agricultural soils in the absence of nitrogen amendments, in soils that have been amended with sludge and soils fertilized chemically. Soils to be investigated will be obtained from agricultural land comparable to that currently being used for land application of sludge. Sludge will be obtained from the Chapel Hill, North Carolina wastewater treatment plant. Results of laboratory experiments will be compared with those from field studies to determine the scope of additional research needed to relate existing knowledge of the flux of reactive nitrogen oxide from natural and chemically fertilized soils to soils that are used for sludge management. The proposal leading to this award was submitted under Special Guidelines for Small Grants for Exploratory Research (SGER) in NSF 95-27, Grant Proposal Guide. Conditions relating to production, transport and emission of nitrogen oxide from natural and chemically fertilized soils are currently well defined. Recent emphasis on aggressive use of land for sludge management suggests determining whether this knowledge is sufficient to establish nitrogen oxide emission characteristics from these soils and their role in contributing to emission and formation of atmospheric ozone. Results of this project are expected to be used in determining the need further research to guide engineering design of land application systems for management of sludges and conditions under which air pollution from this source can be minimized or eliminated. ***