Designing a\nBatch Experimental Setup to Investigate\nthe Kinetics of Methylene Blue Degradation in Water Using Radiofrequency-Induced\nElectromagnetic Fields

This study describes a novel radiofrequency-induced electromagnetic\nfields (RF-EMF) batch reactor design specifically for degrading water\ncontaminants and thoroughly discusses the design parameters. The RF-EMF\nsetup was evaluated for its ability to degrade methylene blue (MB)\nat two frequencies (1.5 and 2 MHz) and three amplitudes (1, 2, and\n2.5 Vpp). The 2 MHz frequency and 2.5 Vpp amplitude resulted in 10%\nMB degradation, likely due to the alignment of MB’s polarization\nregion with 2 MHz, leading to the breakdown of its molecular bonds.\nThe kinetics analysis indicated that MB degradation under these conditions\nfollowed a first-order reaction, with a rate constant nearly four\ntimes higher than the control sample. Additionally, combining RF-EMF\nwith Fenton reactions enhanced MB degradation, increasing the first-order\nrate constant by 1.6 times compared to the control samples. These\nresults support the knowledge that RF-EMF thermally activates ferromagnetic\nsubstances, increasing hydroxyl radical generation in the Fenton process.\nThe findings presented in this study are preliminary, and further\nexploration of RF-EMF’s potential in various contexts is necessary\nto understand its application for water treatment. Future research\nshould focus on optimizing RF-EMF parameters and experimental validation\nof the degradation mechanisms by RF-EMF for water pollutant removal.