Abstract:
Industrial dyes, such as basic fuchsin, pose significant environmental challenges due to their persistence and toxicity. This study focuses on comparing three advanced oxidation processes (AOPs): thermal activation of potassium persulfate (KPS), the Fe(II)/KPS system, and the Fe(II)/sodium percarbonate (SP) system, for the degradation of basic fuchsin. By utilizing a tubular microreactor immersed in bath thermostat, we were able to precisely control the temperature and optimize the degradation efficiency. These systems generate free radicals, notably SO4•− and OH •, which are essential for breaking down refractory organic molecules. The performance evaluation of the three systems revealed that the Fe(II)/KPS system is particularly effective for degrading basic fuchsin, followed by the Fe(II)/SP system and thermal activation of KPS. The different systems were tested under various operational conditions to determine the optimal degradation parameters, taking into account the effects of temperature, pH, and reactant concentrations.
