Degradation of the antibiotic trimethoprim by electrochemical advanced oxidation processes using a carbon-PTFE air-diffusion cathode and a boron-doped diamond or platinum anode

Electrochemistry-High Resolution Mass Spectrometry to Study Oxidation Products of Trimethoprim

“…Those compounds have been previously reported as mammalian [32] and bacterial metabolites [22] as well as transformation products of advance oxidation processes applied to waters containing trimethoprim [16,18,19,37]. These results suggest that electrochemistry-high resolution mass spectrometry is an interesting technique for studying oxidative reactions of organic compounds of environmental interest, as was previously suggested by Hoffmann et al [12].…”

“…Indeed, Marselli, et al [36] have shown that OH• radicals are formed in the oxidation of water on a BDD electrode. A previous study on the degradation of TRI in a photoelectro-Fenton process also reported the formation of multiple hydroxylated oxidation products of TRI [37].…”

Preparation and characterization of a novel KOH activated graphite felt cathode for the electro-Fenton process

“…Their DMP degradation percentage and the corresponding apparent rate constant (k), based on pseudo first-order reaction [43], at RGF and AGF treated at different temperatures for 1 h (700, 800, and 900 • C) and different time (15,30, and 60 min) at 900 • C, are given in Fig. 2.…”

“…After immersion in 1.0 mol L −1 NaOH aqueous solution under mechanical stirring for 3 h to make GF more hydrophilic, it was washed with deionized water and then immersed in 6.0 mol L −1 KOH aqueous solution under mechanical stirring and heating until KOH crystals were separated out. After that, GF was mixed with KOH crystals and heated in a tube furnace at different temperatures (700, 800, 900, and 1000 • C) for 1 h or at 900 • C for different time (15,30,60, and 90 min). The temperature was increased to the objective point at a heating rate of 4 • C min −1 from room temperature.…”

“…Nowadays, many carbonaceous materials have been investigated as the EF cathode, such as graphite [16], carbon felt [17][18][19], graphite felt [20][21][22], carbon sponge [23], activated carbon fiber [24][25][26], carbon-PTFE air-diffusion electrode [27][28][29][30][31][32][33]. Among them, graphite felt (GF) is a promising commercialization cathode material, due to their advantages of large three dimensional active surfaces, chemical resistance, mechanical integrity and easiness to be manufactured.…”