Aggregation and Deposition Behavior of Carbon Nanotubes in Aquatic Environments

0646247 Elimelech本研究的总体目标是研究CNT在水环境中的聚集和沉积行为。由于碳纳米管独特的尺寸和物理化学性质，它们的聚集和沉积行为很可能与那些被广泛研究的亚微米级无机和有机胶体颗粒完全不同。具体来说，我们将研究如何CNT功能化，主要的单CNT，聚集（捆绑）状态，和水溶液的组成影响聚集和沉积/过滤在水生环境中的动力学的大小。 这些信息将用于评估释放到天然沃茨中的CNT在多大程度上可能以较大的聚集体存在，以及这些聚集体由于物理化学过程（如沉降和沉积/过滤）而被去除的可能性。

0646247ElimelechThe overall objective of this research is to investigate the aggregation and deposition behavior of CNT in aquatic environments. Because of the unique dimensions and physicochemical properties of CNTs, it is likely that their aggregation and deposition behaviors are quite different than those of the much studied submicrometer-sized inorganic and organic colloidal particles. Specifically, we will examine how CNT functionalization, size of primary single CNT, aggregation (bundling) state, and aqueous solution composition affect the kinetics of aggregation and deposition/filtration in aquatic environments. This information will be used to evaluate to what extent CNTs released into natural waters may be present as larger aggregates and the potential for these aggregates to be removed due to physicochemical processes such as sedimentation and deposition/filtration.