This project investigates the effective use of silver as a means of microbial inactivation in water filtration. The project is based around the use of silver to enhance the water purification process used in ceramic water filters. The project should assess the intrinsic efficacy and other performances of the various colloidal silver (CS) filters, then go on to look at the change in microbial inactivation by silver in contaminated water flowing through a filter as a function of its concentration, pore size, porosity, tortuosity and wall thickness, in two situations: the one with an incremental "fouling" level of the affluent water and the other with an incremental exposure time.

Other things to be investigated include:

• A way to measure how much colloidal silver actually stays in the filtering element once it is rinsed out.

• A foolproof way of keeping the filtered water clean in the receiving tank

• Chemical removal (pesticides, herbicides, a.o.)

Download the full proposal here.

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