TICPOL: Biocidal nanoparticulate titania/carbon-polymer systems for water disinfection

Project Summary

The project proposes the use of inorganic nanoparticulate biocide systems based on titania/carbon combinations with morphological/structural control for the elimination of microorganisms in water. The aim is to assemble them with various polymer materials, particularly the development and synthesis of multifunctional magnetite-polymer-titania/carbon systems or the inclusion of the biocidal component in asymmetric pore membranes. Both types of materials are designed according to their use in the relevant operating conditions and have in common: (i) reduced toxicity in relation to both the components used and their absence from the medium after use; (ii) the use of diverse and renewable energy sources (particularly the full use, from the UV to the IR component, of the sun); (iii) universal application, without limitations with respect to the nature of the microorganism or their presence in the form of biofilms; (iv) of demonstrable effectiveness and longevity; and (v) of potential application in the complete (chemical and biological) decontamination of waters. The project seeks to utilise the potential of such multi-component nanocomposite systems and is based on a stepwise strategy based on 1) the use of modern synthesis methods together with an orderly design of the materials and 2) the measurement and modelling of the biocidal properties of the systems under relevant conditions for the establishment of “structure-activity” relationships, which allow the understanding and future improvement of the systems. The aim is to develop new systems with scientific objectives related not only to their novelty and the understanding of their biocidal properties but also to develop a technological base, especially within MBR (“membrane bioreactor”) type schemes, providing an answer to the two most serious problems of this technology: biofouling and the treatment of retained material.

Application:

The development and application of the proposed biocide systems for water disinfection – versatile, stable, and environmentally friendly, as well as potentially more efficient and “cleaner” than the current ones – will improve the quality of life in poor countries and remote places, as well as in developed areas and large urban agglomerations.