Development of a new composite LDH/TiO2-3D for degradation of sulfaguanidine under UV and visible light: Experimental design, kinetic and mechanisms

Photocatalytic Degradation of the Antibiotic Sulfamethazine Using Decatungstate Anions in an Aqueous Solution: Mechanistic Approach

“…However, with the highest concentration, k and t 1/2 are 14 times lower and 16 times higher, respectively, and SMZ is partially eliminated (Table 1). This is probably due to a larger amount of SMZ to be degraded and to an absorbance competition between SMZ and the decatungstate anions, this being unfavorable for the photocatalytic reaction [17,45,46]. However, considering that the pollutant concentration under real natural conditions ranges from a few nanograms/liter to µg/L, it is reasonable to assume that this photocatalytic process could achieve complete degradation of SMZ and possibly its mineralization [47][48][49].…”

“…Recently, numerous studies have focused on advanced oxidation processes for the removal of pharmaceutical pollutants from wastewaters [17][18][19][20]. These processes have demonstrated their effectiveness against toxic and non-biodegradable organic pollutants.…”

“…In general, the excitation of the photoactive material under the action of artificial or natural light leads to the formation of hydroxyl radicals (OH • ). These radicals are very strong oxidizing agents, i.e., they can oxidize many organic compounds, up to mineralization (conversion of the pollutants into CO 2 , H 2 O, and inorganic ions) [17,[19][20][21][22].…”