This project is about understanding the effect resin decay has on transport phenomena inside the resin. The decay of resins in cyclic duty is a well-documented phenomenon. However, it is little understood. There are now many expensive resins on the market and the viability of recovery projects for these resins could be seriously impeded if there is a lack of understanding of what happens during the decay process of the resin.
The essential part of this project is to computer simulate mass transport inside strong acid ion exchange resins for the purposes of monitoring associated parameters during the decay process. This will allow for the calibration of the system against fresh resins with known altered steric environments. Once this is achieve, the simulator can then be used to determine what happens inside a decaying resin as it passes through its normal cyclic duty. In this way alternations in mass transport phenomenon can be measured which ultimately results in a tool that can be used to predict the behaviour of the resin as it ages in a particular process. It could also be used to compare the performances of different resins in a particular application. The developed model will be useful to designers of contacting equipment as this will give them in-site as to how the performance of the resin is likely to change as it ages. Acceleration of the decay of the resin will be important for this study. It requires the construction of a device that is able to cycle resin through its normal adsorption and regeneration at high speed.