Efficient filtration system inspired by the kidney: 3D modeling of an active osmotic exchanger in COMSOL

Abstract

Nowadays, recycling of water in an (energy) efficient way is a challenge that needs to be engaged. This thesis provides a theoretical framework that can be used to build a physical model of a filtration device. Additionally we developed some building blocks in COMSOL that can be used to build a numerical model for such a device, based on the human kidney. Inspiration from the kidney is used because this is one of the most efficient filtration devices. In our model we find that the ion concentration profiles are consistent with the findings of Marbach and Bocquet [Phys. Rev. X 3, 031008 (2016)] . Based on this thesis one could build a more complete model of a filtration device. Such a model could be used to build a filtration device for small-scale water recycling or maybe even an artificial kidney.