Sorption of Organic Contaminants from Water by Environmental Solids: Additivity of Contributions In Heterogeneous Systems

环境固体对水中有机污染物的吸附：异质系统中贡献的可加性

• 批准号: 9910174
• 负责人: William Ball
• 金额: $ 35.15万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-02-15 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910174&HistoricalAwards=false
• 关键词: Sorption; Organic; Contaminants; Water; Environmental

9910174 Ball The objective of this project is to obtain an improved understanding of the manner in which organic contaminants of surface and groundwater are absorbed and adsorbed on substances such as charcoal, shale and sand. Processes used in water treatment practice frequently depend on adsorptive and absorptive characteristics of substances used or produced during the treatment process. In related prior research supported by his Presidential Young Investigator award from the National Science Foundation (9196241) the investigator studied sorptive properties of soils toward two synthetic organic soil contaminants (triochlorobenzene and trichloroethene). Soils studied emerged from a common parent rock but differed in their content of soil organic matter as influenced by differences in natural decomposition products and infiltration of water. In this project the investigator plans to increase the number of soil contaminants to include chlorobenze, two dichlorobenzenes, chloroform, carbon tetrachloride, lindane and diuron. These compounds differ sufficiently significantly enough in their octanol-water distribution ratios and aqueous solubility for results of this work to be used in evaluating the Polanyi theory's potential usefulness in predicting sorptive behavior of soil. Results of this research may be applied to calibration of mathematical models that predict the performance of processes affecting the dispersive properties of organic contaminants of soil as affected by natural decomposition processes and leaching. This knowledge is expected to lead toward better engineering design and use of environmental technologies than is now possible for processes and systems to decontaminate soil to reduce or eliminate the pollutional influence of contaminants on the quality of grounewater and prevent movement of contaminants from contaminated sites. ***

9910174球该项目的目的是对表面和地下水的有机污染物的吸收并吸附在木炭，页岩和沙子等物质上的有机污染物的方式中有了深入的了解。 水处理实践中使用的过程经常取决于治疗过程中使用或产生的物质的吸附和吸收性特征。 在与国家科学基金会（9196241）的总统年轻研究者奖的相关研究中，研究者研究了土壤对两种合成有机土壤污染物（三氯苯和三氯乙烯）的吸附特性。 所研究的土壤来自普通的父岩，但由于天然分解产物的差异和水的渗透，其土壤有机物的含量有所不同。 在该项目中，研究者计划增加包括氯贝苯，两种二氯苯甲，氯仿，四氯化碳，四氯化碳，林烷和二荷龙的土壤污染物的数量。 这些化合物在其辛醇 - 水分布比和水溶性方面的差异足够显着，可以用于评估波兰尼理论在预测土壤吸附行为方面的潜在有用性。 这项研究的结果可以应用于数学模型的校准，这些模型预测了影响土壤有机污染物的分散性能的过程，该过程受自然分解过程和浸出的影响。 预计这些知识将导致更好的工程设计和环境技术的使用，而对于现在的过程和系统，对土壤进行净化的可能性比现在可以降低或消除污染物对毛ornewater质量的污染影响并防止污染物从受污染的地点移动。 ***