Project title: Photosensitezed oxidation of butyl and benzyl esters of p-hydroxybenzoic acid using immobilized photosensitzer into polyurethane nanofibers  

Acronym: EDCsPOx

Project Promoter: Lodz University of Technology/Faculty of Process and Environmental Engineering

Project cost (EUR): 86 397

Grant amount (EUR): 54 683

Duration: 34 months


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Project summary:

Endocrine disrupting compounds (EDCs) have received considerable worldwide attention, as they can mimic or/and block the activity of natural hormones disruptors on reproductive functions. Environmental hazards properties related with endocrine activity occurring at low concentrations (pg/g – ng/g), coupled with occurrence in water at trace concentrations (1ng/L - 1μg/L), emerge as a major concern for water quality. Butylparaben and benzylparaben are put on the list of suspected endocrine disrupting chemicals by several organizations e.g. US Environmental Health Science and WWF. Because conventional treatment methods are ineffective in removing EDCs at low concentration, approaches for the removal of these toxins during drinking water treatment are needed. This project will be focused on photodegradation of butylparaben and benzylparaben using photosensitized oxidation process. The photosensitized oxidation is especially attractive method of degradation because it use oxygen from air and solar photons in visible range. Photosensitized oxidation may occur in homogeneous and heterogeneous system. Disadvantages of this process in homogenous system are low photostability of the sensitizers and difficulty in removing them from the solution after the reaction. These problems can be overcome by conducting studies using immobilized sensitizers, where it can be easily recovered and re-used significantly thereby reducing the cost of photodegradation. In project the polymeric polyurethane nanofabrics prepared by the electrospinning method will be used as a carrier for the immobilized sensitizer. Due to the proven harmful environmental and health effects of the EDCs, the understanding of possible pathways of their phototransformation in reservoirs can be important to protect the health of present and future generations. Up to now there are no publication on the kinetics of photosensitized degradation of parabens in heterogeneous system.