Improving degradation of real wastewaters with self-heating magnetic nanocatalysts

Industrial effluents contain a wide range of organic pollutants that present harmful effects on the environment and deprived communities with no access to clean water. As this matter is resistant conventional treatments, Advanced Oxidation Processes (AOPs) have emerged as suitable option counteract these environmental challenges. Engineered iron oxide nanoparticles been widely tested in AOPs catalysis, but their full potential magnetic induction self-heating catalysts has not studied yet real highly contaminated industrial wastewaters. In study we designed catalyst finely tuned structure small cores (10 nm) aggregates develop multicore particles (40 high moment colloidal stability. This nanocatalyst, can be separated by harvesting, able increase reaction temperatures (up 90 °C at 1 mg/mL suspension 5 min) under action alternating fields. efficient heating was degradation model compound (methyl orange) wastewaters, such leachate from solid landfill (LIX) colored wastewater textile industry (TIW). It possible rates leading reduction chemical oxygen demand 50 90%, for TIW LIX. These removal ability nanocatalyst sustained formation strong reactive species Fenton-like mechanism proved electron paramagnetic resonance. findings represent an important advance implementation scalable, non-toxic, certainly enhance AOP treatment more sustainable way.