Abstract
Advanced oxidation processes (AOPs) such as fenton, ozonation, sonolysis, photocatalysis, UV photolysis, and wet air oxidation are one amongst the most suitable techniques for water and wastewater treatment. These, AOPs have also been chosen for the complete degradation of various categories of emerging pollutants that could not be managed by any conventional technologies. The mineralization is achieved by chemical reactions between the various reacting species generated and the pollutants. The present article provides a vivid view of the mechanistic features of various AOPs and its possible synergisation for process enhancement to achieve better treatment efficiency.
Highlights
The availability of the earth’s fresh water resources has drastically depleted or contaminated due to improper water management, leading to thevulnerable situation
The review explicitly discussed on the robustness of various Advanced oxidation processes (AOPs) that has been extensively used forwater management
Their treatment efficiency depended on various process parameters that were clearly reviewed
Summary
O3/H2O2 Ozone combined with hydrogen peroxide has emerged as a new dimension in water treatment which can oxidize both inorganic and organic substances more effectively than standalone process. The factors which can affect the treatment includes: pH, initial pollutant concentration, theturbidity of thesolution, amount of O3 dose, amount of UV dose, types of UV lamps used for the process, reaction time, scavengers present in the water[80,81,82]. Fenton Processes The Fenton is one of the prominent AOP and the chemistry of reactions related to this includes reactions of peroxides (H2O2) with Fe2+ to generate reactive oxygen species that can degrade the organic as well as inorganic matter inaqueous phase.
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