An experimental study of the homogeneous Fenton and photo-Fenton degradation of 4-amidophenol (paracetamol, PCT) is presented. For all the operation conditions evaluated, PCT degradation is efficiently attained by both Fenton and photo-Fenton processes. Also, photonic efficiencies of PCT degradation and mineralization are determined under different experimental conditions, characterizing the in...

The main challenge in the oxygen delignification process is the improvement of selectivity. To further understand the effect of the amount of hydroxyl radicals on the selectivity of oxygen delignification, in this work, the hydroxyl radicals were generated by the improved Fenton reaction system and were quantified by UV spectrophotometry. Antioxidants such as ascorbic acid were applied for the ...

This preliminary study developed a novel cellulose pretreatment method for cost-effective cellulosic utilization using a modified cuprammonium solution as a solvent to dissolve cellulose followed by molecular oxygen/Fenton depolymerization. The modified cuprammonium solution is composed of cuprammonium solution and a special catalyst that could efficiently enhance cellulosic oxygen sensitivity ...

BACKGROUND Hemoglobin (Hb) is the iron-containing oxygen transport protein present in the red blood cells of vertebrates. Ancient DNA and forensic scientists are particularly interested in Hb reactions in the dry state because both regularly encounter aged, dried bloodstains. The DNA in such stains may be oxidatively damaged and, in theory, may be deteriorated by the presence of Hb. To understa...

This work studies in detail the photo-Fenton degradation process of Paracetamol (PCT) on an annular pilot-plant reactor using Computational Fluid Dynamics (CFD). A cylindrical lamp emission model was originally implemented over structure OpenFOAM(R) platform and a multicomponent reaction mixture used to compute temporal evolution different species at each point reactor. Once proposed experiment...

An innovative foam-based method for Fenton reagents (FR) and bacteria delivery was assessed the in situ remediation of a petroleum hydrocarbon-contaminated unsaturated zone. The surfactant foam first injected, then reagent solutions were delivered propagated through network lamellae with piston-like effect. Bench-scale experiments demonstrated feasibility various treatments hydrocarbon (HC) rem...

A microbial fuel cell (MFC) with cathode and anode chambers was utilized to generate power while simultaneously removing COD from wastewater. By utilizing various oxidant solutions, it is possible increase the generated voltage. The chamber used for anaerobic treatment of synthetic wastewater (approximately 1000 mg/L), whereas contained solutions such as dilute hydrogen peroxide (300 KMnO4 K2Cr...