Ambient pressure and temperature advanced oxidation processes (AOP) are the unique technologies able to destroy refractory pollutants in water (priority or emergent) that remain unaltered when subjected to conventional operations in wastewater treatment. Among these operations both biological and chemical oxidation are included, the latter involving the possible use of ozone. Main problem of AOP is the high reactivity and low selectivity of hydroxyl radicals, so that high concentrations are needed which make the search of new processes necessary. Another important question is to reduce reaction times and improve environmental sustainability. Therefore, there is a continuous search for alternative AOPs....