Competitive Binding of Polycycle Aromatic Hydrocarbons (PAHs) by Aqueous Organic Matter, Mineral-Bound Organic Matter and Mineral Surfaces: Effects on Groundwater

9307190 Amy该奖项旨在支持开发一个综合模型的研究，该模型描述了矿物质结合和天然存在的有机物质对水中多环芳烃的竞争性吸附。 研究人员计划将疏水性有机化合物（如多环芳烃）的运输与通过水流过的材料上的吸附来促进或阻碍它们的因素联系起来。 要研究的多环芳烃的溶解度范围从萘到苯并（α）蒽。 天然有机物将包括标准参考腐殖物质以及天然土壤中的腐殖物质。 使用的矿物将包括石英、针铁矿、方解石、高岭石和蒙脱石，以及含水层特有的各种组合。 该项目的成果预计将是一个数学模型，描述多环芳烃在地下水中与天然存在的有机物和含水层矿物接触时的迁移特性。 它的潜在用途将是设计和操作用于补救被碳氢化合物污染的地下水和土壤的程序和系统。

9307190 Amy This is an award to provide support for research to develop a comprehensive model that describes the competitive sorption of polycyclic aromatic hydrocarbons in water by minerals bound and naturally present organic matter. The investigators plan on relating the transport of hydrophobic organic compounds like polycyclic aromatic hydrocarbons to factors that facilitate or retard them by sorption on materials through which the water flows. The polycyclic aromatic hydrocarbons to be studied span the solubility range from naphthalene to benzo(alpha)anthracene. The natural organic matter will include standard reference humic substances as well as that in natural soils. Minerals used will include quartz, goethite, calcite, kaolinite and montmorillonite alone and in various combinations typical of aquifers. The result of this project is expected to be a mathematical model that describes transport characteristics of polycyclic aromatic hydrocarbons in groundwater when subjected to contact with naturally present organic matter and aquifer minerals. Its potential use will be in the design and operation of processes and systems for remediation of groundwater and soil that has been contaminated with hydrocarbons.