Sonolytic degradation of pesticide metazachlor in water: The role of dissolved oxygen and ferric sludge in the process intensification

Understanding the effects of mineral water matrix on degradation of several pharmaceuticals by ultrasound: Influence of chemical structure and concentration of the pollutants

“…As observed, when pollutants were not present, the accumulation rate of H 2 O 2 was higher (4.72 µmol L −1 min −1 ) than that obtained in the presence of SAM (4.22 µmol L −1 min −1 ) or DCF (3.71 µmol L −1 min −1 ). The lower accumulation of hydrogen peroxide in the presence of the pharmaceutical suggests the reaction of hydroxyl radical with these pollutants, which decreases the combination of sonogenerated HO• [46] .…”

Ultrasonication for removal of organic micropollutants from water

“…The available data in the field of ultrasonic application revealed that many industries use it in their production processes but in the domain of wastewater treatment [9][10][11]. Referring to this last application ultrasonication has proved to be useful for the treatment of wastewater with pharmaceuticals [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26], pesticides [27][28][29][30][31][32][33], hormones [34], explosive derivatives [35], petroleum products [36][37][38], polyfluorinated compounds [39,40], surfactants [41], dyes [42][43][44][45]. Likewise, ultrasonication can be used in the field of drinking water treatment for hardness control [46][47], turbidity control [48], ammonia removal [49], bromates removal [50], trihalomethanes [51,52] and haloacetic acids removal…”

Sonochemical fabrication of inorganic nanoparticles for applications in catalysis

“…The combinative application of ultrasound irradiation with other iron-based catalysts such as Fe 2 O 3 catalyst and Fe 3 O 4 /TiO 2 -N-GO catalyst, have been reported in the degradation of organic pollutants (e.g., humic acid, metazachlor). [128] , [129] Diao and coworkers developed an ultrasound-enhanced sludge biochar iron catalyst/persulfate heterogeneous system for the degradation of bisphenol A in water, and nearly 98% degradation could be reached within 80 min at optimum reaction conditions. In the degradation system, a positively synergistic effect occurred between sonochemistry and catalytic chemistry, and two radicals (SO 4 - · and HO·) participated in the degradation of bisphenol A, whereas SO 4 - · radical might be predominant.…”