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球本项目的目的是获得一个更好的理解的方式，其中有机污染物的地表水和地下水被吸收和吸附的物质，如木炭，页岩和沙子。 水处理实践中使用的工艺通常取决于处理过程中使用或产生的物质的吸附和吸收特性。 在之前的相关研究中，他获得了美国国家科学基金会的总统青年研究者奖（9196241），研究人员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。 土壤研究出现了一个共同的母岩，但不同的土壤有机质含量的影响，在自然分解产物和水的渗透的差异。 在该项目中，调查人员计划增加土壤污染物的数量，包括氯苯、二氯苯、氯仿、四氯化碳、林丹和敌草隆。 这些化合物的差异足够显着足够的辛醇-水分配比和水溶性的这项工作的结果被用于评估波兰尼理论的潜在有用性，在预测土壤的吸附行为。 本研究的结果可应用于数学模型的校准，预测的性能的过程影响土壤中的有机污染物的自然分解过程和淋溶的影响的分散特性。 预计这些知识将导致更好的工程设计和环境技术的使用，而不是现在可能用于净化土壤的过程和系统，以减少或消除污染物对污水质量的污染影响，并防止污染物从污染场地移动。***