Απομάκρυνση της παρακεταμόλης από υδάτινα διαλύματα, μέσω τηε ενεργοποίησης των οξειδωτικών: υπεροξίδιο του υδρογόνου, υπερθειικό και υπεροξυμονοθειικό κάλλιο με τη μέθοδο της φωτόλυσης

Abstract

This study aimed to remove paracetamol (persistent organic pollutant) from water through light activation of various oxidants. The concentration of paracetamol remained constant for all the experiments at 1 mg/L, in deionized water as solution matrix. The oxidants that were studied are the potassium persulfate (K2S2O8), potassium peroxymonosulphate (KΗSO5) and hydrogen peroxide (H2O2) and tested at equal concentrations (0.052, 0.52 and 5.2 mmol/L). The experiments were conducted in a collimated beam reactor and a specific intensity of 0.6276 mWcm-2, at 385mm. Initially, a series of experiments were conducted in order to define the most effective oxidant regarding paracetamol removal. After that the combined effect of HP and PS activation was compared with HP and PMS activation at an overall oxidant concentration of 0.52 mM, to check whether their simultaneous activation is synergistic, additive, or antagonistic . The reaction time of experiments was 120 minutes. Also, each experiment was conducted with three times, for the determination of the standard deviation, along with the corresponding control experiments (absence of UVC radiation). After 120 minutes of reaction time, the obtained samples were analyzed with liquid chromatography, for the determination of the residual concentration of the organic pollutant.