"The Effects of Surface Concentration and Particle Inter- action on the Sturcture and Composition of Surface Complexes"

“表面浓度和粒子相互作用对表面络合物结构和组成的影响”

• 批准号: 9210869
• 负责人: Lynn Katz
• 金额: $ 9.32万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-15 至 1995-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9210869&HistoricalAwards=false
• 关键词: Effects; Surface; Concentration; Particle; Inter

This is an award to support research on a comprehensive modeling approach for predicting metal ion sorption over the range of solid to solution ratios found in natural environmental systems. The model must be capable of predicting the distribution of surface complexes as a function of solids concentration and pH and should incorporate the effects of particle interactions on sorption phenomena. X-Ray absorption spectroscopy and atomic force microscopy will be used to determine the structure of surface complexes as a function of solids concentration in batch and recirculating batch reactors. The proposal leading to this award was submitted in response to NSF 88-99 as modified by changes dated 09/19/91 to make the Research Initiation Award announcement consistent with changes in NSF 83-57 and published as NSF 90-77. Many environmental problems associated with energy and raw material production require reliable quantitative prediction of the transport and dispersion of contaminants in surface and groundwater systems. Reaction of contaminant solutes with mineral surfaces in soils, sediments, and rocks typically causes a portion of each solute to partition onto the solids. This sorption decreases solute mobility, which must be accounted for in transport models. Results of this research are expected to be used to formulate surface complexation reactions and the resulting model will be used to simulate the sorption behavior of metal ions in column reactors used in design of environmental pollution abatement processes and systems.

这是一个奖项，以支持研究一个 综合建模方法 预测金属离子吸附范围 固体与溶液的比例 环境系统。 模型必须是 能够预测 表面络合物作为固体的函数 浓度和pH值，并应包括 粒子相互作用对 吸附现象 x射线吸收 光谱学和原子力显微镜将 用于确定表面结构 配合物作为固体的函数 分批循环浓缩 间歇反应器 导致这一结果的提案 该奖项是根据NSF 88-99提交的 根据1991年9月19日的变更进行修改， 研究启动奖宣布 符合NSF 83-57的变化， 以NSF 90-77出版。 许多环境问题与 能源和原材料生产需要 可靠的定量预测 污染物的迁移和扩散 地表水和地下水系统。 反应 污染物溶质与矿物表面， 土壤、沉积物和岩石通常会导致 每种溶质的一部分， 固体。 这种吸附作用减少了溶质 流动性，这必须在 运输模型。 这项研究成果 预计将用于配制表面 络合反应和由此产生的 模型将被用来模拟吸附 金属离子在柱反应器中的行为 用于环境污染设计 减排工艺和系统。