The main objectives are as follows:
* To develop a pilot plan for the decontamination of microbially polluted water by a novel photochemical technique, which is based on the use of visible light (or even sunlight) and porphyrin-type photosensitizers, i.e. a technique requiring a simple and cheap technology and having a low environmental impact.
* To identify porphyrin photosensitizers which exhibit an efficient and non-specific phototoxic action against a broad number of microbial species, including Gram-positive and -negative bacteria, yeasts and mycoplasma.
* To identify an inert water-swollen matrix (e.g. resin or inorganic bead) to which the photosensitizer can be covalently coupled without impairment of its photobiological activity.
* To define a protocol for the efficient photosensitizer inactivation of microbes in waters to be used for aquaculture and irrigation.
The final result should be the development and validation of a pilot plant for water photosterilization as well as the mise-au-point of optimal protocols for large scale decontamination of water from aquaculture systems.
The project should identify combinations of photosensitizer-inert support systems which are not noxious for the environment and allow one to achieve an efficient control of the microbial population without causing the selection of photoresistant species.
* Synthesis and photochemical/photobiological characterization of polymer- or inorganic bead-bound porphyrin photosensitizer.
* Development of protocols for large-scale photoinactivation of bacteria and other microbial species.
* Evaluation of the efficiency of a pilot plant for water decontamination, possibly in synergism with mechanical filtration.
Funding SchemeCSC - Cost-sharing contracts
52900 Ramat Gan
45413 Muelheim An Der Ruhr
1428 Buenos Aires