A series of experiments were conducted to compare the effectiveness of various catalysts in the production of H 2 O 2 and in the degradation of endocrine disrupting compounds (EDCs), including bisphenol A (BPA) and 17α-ethinyl estradiol (EE2), in water by sonocatalysis using ultrasonication at 28 kHz with a contact time of 60 min. The catalysts included a stainless steel wire mesh (SSWM), glass beads (GB), TiO 2 powder, a Ti-wire mesh (Ti-WM), and an oxidized Ti-wire mesh (TiO 2 -WM). The most effective catalyst combination for the production of 215.7 μM of H 2 O 2, was the use of SSWM with TiO 2 as the cocatalyst. A significantly lower sonochemical reactivity was observed when there was no added catalyst (18.5 μM), SSWM (61.3 μM), and TiO 2 alone (134.1 μM). For the given contact time and frequency, sonochemical reactivity was determined from the rate constants for H 2 O 2 production. EDC sonodegradation occurred in the following order: SSWM + TiO 2 (powder) > GB > TiO 2 (powder) > SSWM + GB > TiO 2 -WM > Ti-WM > SSWM > no catalyst, although the catalyst type, surface area, and amount were varied. Our findings suggest that TiO 2 -WM can be continuously reused for the catalysis of H 2 O 2 production and the degradation of EDC.
No takes yet. Share an insight, caveat, or question.
Her et al. (2011) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: