Removal of refractory organics in nanofiltration concentrates of municipal solid waste leachate treatment plants by combined Fenton oxidative-coagulation with photo – Fenton processes

Step by step procedures: Degradation of polycyclic aromatic hydrocarbons in potable water using photo-Fenton oxidation process

“…To date, the application of the photo-Fenton oxidation process for PAHs treatment were from contaminated soil (review paper) [12] , landfill leachate [13] , municipal solid waste leachate [14] , sanitary landfill leachate (Tânia et al, 2013), aniline wastewater [15] , ammunition wastewater [16] and saline aqueous solutions [17] . As for potable water, the application of Fenton reagent aided with photo treatment [5] , [6] or electrolysis [4] were not focusing on PAHs removal.…”

Synthesis of an inorganic‐framework molecularly imprinted Fe‐doped TiO2 composite and its selective photo‐Fenton‐like degradation of acid orange II

“…This process can efficiently generate •OH and meet the need for recovering radicals. Currently, photoassisted heterogeneous catalysis is mainly based on the use of TiO 2 due to its high efficiency, low prices, and excellent chemical stability against photocorrosion . However, in actual wastewater, low concentrations of highly hazardous and non‐biodegradable pollutants usually coexist with high concentrations of other low toxic but biodegradable pollutants.…”

“…Currently, photoassisted heterogeneous catalysis is mainly based on the use of TiO 2 due to its high efficiency, low prices, and excellent chemical stability against photocorrosion. 28,29 However, in actual wastewater, low concentrations of highly hazardous and non-biodegradable pollutants usually coexist with high concentrations of other low toxic but biodegradable pollutants. Obviously, the pollutants at higher concentrations would be more quickly adsorbed onto the photocatalyst surface and preferably degraded.…”

Remarkable lignin degradation in paper wastewaters over Fe2O3/γ-Al2O3 catalysts using the catalytic wet peroxide oxidation method

“…5 Aer secondary treatment using a conventional microbial method, most TOC is removed; however, stubborn paper factory lignin and its derivatives still remain, resulting in severe environmental pollution. 6,7 In recent years, advanced oxidation processes (AOPs) 8 with Fenton's reagent (Fe 2+ /Fe 3+ / H 2 O 2 ) as an oxidatant 9 have been used for the degradation of a great variety of organic compounds. 10 However, homogenous Fenton systems have some well-known drawbacks, including limited pH range, catalyst deactivation and the production of iron-containing sludge that requires further disposal.…”