CAREER: Aggregate-Enhanced Membrane Filtration

提案标题：职业：聚集体增强膜过滤提案编号：CTS-0449431主要研究者：Albert Kim机构：夏威夷大学本研究是一项基础研究，采用Stokesian动力学减少交叉流微滤和通过预聚集和特定颗粒沉积增强的超滤中的胶体污染。该项目的主要目的是利用给水中和膜表面的颗粒聚集来提高过滤性能。 将对骨料饼和绒毛层的几何结构进行建模，并从模拟中估计比电阻。斯托克斯动力学将被开发和修改，以模拟骨料饼层的产生。本项目的主要目标是确定临界条件，即，临界通量，低于此值不会发生衰变。 教育计划将侧重于培养国内学生的科学动机，这些学生主要是美国出生的亚洲和夏威夷本地学生。他们将通过本科阶段的新课程被引入该项目，目的是以研究为基础的教育。拟议的课程活动将通过研究相关项目整合国内本科生和外国研究生，以促进合作。有必要开发的分子模型，捕捉分子水平的信息，在溶液中和膜上的聚集体。 了解膜表面聚集体的物理化学方面将提供预防这些的方法，从而提高膜的功效。因此，预计拟议的研究将对设计更有效的过滤系统产生重大影响。

Proposal Title: CAREER: Aggregate-enhanced Membrane FiltrationProposal Number: CTS-0449431Principal Investigator: Albert KimInstitution: University of HawaiiThis investigation is a fundamental study of micro-hydrodynamic scale phenomenausing Stokesian dynamics for reducing colloidal fouling in crossflow microfiltration and ultrafiltration enhanced by pre-aggregation and specific particle deposition. The main object of this project is enhancement of filtration performance using particle aggregation in feed water and on the membrane surface. Geometrical structure of the aggregate cake and fluff layer will be modeled and the specific resistances will be estimated from the simulations. Stokesian dynamics will be developed and modified to simulate the generation of the aggregate cake layer. A primary objective of this project is to determine the critical conditions, i.e., critical flux, below which no disintegration will happen. The educational plan will focus on cultivating scientific motivation of domestic students who are mostly American-born Asian and native Hawaiian students. They will be introduced to the project through new courses at the undergraduate level on the purpose of research-based education. The proposed course activities will integrate domestic undergraduate and foreign graduate students through research-related projects to foster collaborations. There is a need for developing molecular models that capture the molecular level information of aggregates both in solution and on membranes. Understanding the physico-chemical aspects of the aggregates on membrane surfaces will offer means of preventing these and thus improving the membrane efficacy. The proposed research is thus expected to have a significant impact on designing more efficient filtration systems.