The Influence of Shell-side Flows on Mass Transfer in Hollow Fiber Membrane Modules

CTS-9408414托莱多大学G.Glenn Lipscomb该研究涉及中空膜组件中的传质，特别是纤维束外部流动的影响。中空纤维膜越来越多地用于各种分离过程，如过滤、反渗透、透析、气体净化和渗透汽化。将发展理论来预测壳侧速度场。特别是，将确定纤维填充均匀性和模块尺寸等参数对流体停留时间分布的影响。该模型将扩展到包括从纤维管腔到壳层的同时传质。理论结果将通过中空纤维人工肾得到验证。预计拟议的研究将导致基于工程原理而不是反复试验的大规模膜组件的改进设计。了解传质过程及其有效控制对于膜分离的广泛应用是必要的，膜分离对生物技术、水处理以及民用基础设施、环境和制造业都具有重要意义。

CTS-9408414 University of Toledo G. Glenn Lipscomb The research deals with mass transfer in hollow membrane modules, particularly the effect of flows external to the fiber bundle. Hollow fiber membranes are being used increasingly in a variety of separation processes such as filtration, reverse osmosis, dialysis, gas purification, and pervaporation. Theory will be developed to predict the shell-side velocity fields. In particular, the effects of parameters such as fiber packing uniformity and module dimensions on the fluid residence time distribution will be determined. The model will be extended to include simultaneous mass transfer from fiber lumen to the shell. The theoretical results will be verified using hollow fiber artificial kidneys. The proposed research is expected to lead to improved designs of large-scale membrane modules based on engineering principles rather than trial-and-error experiments. An understanding of mass transfer and its effective control are necessary for wide scale application of membrane separations important to biotechnology, water treatment and hence civil infrastructure, environment and manufacturing.