Advanced oxidation processes for water treatment: advances and trends for R & D

TL;DR: The electrochemical oxidation of a commercial amoxicillin formulation over a boron-doped diamond (BDD) anode was investigated and thirteen compounds were detected as TBPs of AMX electrochemical degradation, while several others appear in the original formulation.

Abstract: The economic, social, and environmental aspects are important that should be notable before the selection of a method for the production of energy. Various renewable energy sources are used like hydropower, biomass, biofuel, geothermal energy, and wind energy for the production of sustainable energy that are excellent approaches to fulfill energy environmental energy demands. Renewable sources of energy give an excellent chance to extenuate the gas emission in greenhouse and reduction of global warming with the help of renewable sources of energy. The importance and utilization of the variety of renewable sources of energy are elaborated in this article. The emerging and exploring technique for the production of energy is the photocatalysis. In photocatalysis, solar spectrum is the extraneous source that is used with water to produce hydrogen energy (green energy) by the water splitting under the shower of the solar spectrum. The solar spectrum contains heat and intensity of light from which light spectrum is the abundantly used for the splitting of water. The photocatalyst is the key factor to initiate the reaction depending upon the energy band gap by absorbing the energy from the spectrum of the sun. Semiconducting materials having lower forbidden energy band gap are the basic requirements to use them as a photocatalyst for photocatalysis. Copper vanadate and their composites are the promising materials that are used as photocatalyst for the production of hydrogen energy. Copper vanadate is the focusing material that can be used as photocatalyst. It is an n‐type semiconducting material with 2 eV indirect energy band gap having monoclinic structural phase which is tuned by the doping of metals like chromium, molybdenum, and silver to reduce the grain size and energy band gap and increase the surface area and optical absorption of solar light only to enhance the photocatalytic performance towards the production of hydrogen energy by water splitting in the presence of solar light.

TL;DR: In this paper, the results on ozonation, adsorptive and combined process of ozone with zero-valent iron nanoparticles are presented, and the results suggest that nZVI and O3/nZVI processes have the highest potential to intensify the degradation and removal of organochlorine pollutants.

TL;DR: FT-IR, UV-vis and pH variation demonstrated that PAOP could break the aromatic and heterocyclic structures in MB molecule to form organic acids and possible degradation pathways of MB were accordingly proposed based on LC-MS, GC-MS and density functional theory calculation.

TL;DR: Ozonation was the oxidation process most studied, gives the best expectatives to be applied with successful results.

TL;DR: In this paper, the electrogeneration of hydroxyl radicals was studied at a synthetic B-doped diamond (BDD) thin film electrode, where spin trapping was used for detection of hydoxyl radicals with 5,5-dimethyl-1-pyrroline-Noxide and with salicylic acid using ESR and liq. chromatog.

TL;DR: The suitability of Advanced Oxidation Process (AOPs) for pollutant degradation was recognised in the early 1970s and much research and development work has been undertaken to commercialise some of these processes as discussed by the authors.