In this study, Chemical Oxygen Demand (COD) removal efficiency from wood processing wastewaters by Fenton Process (FP) and Photo Electro (PEFP) were examined. Important operating parameters such as pH, Fe+2 concentration/(amper for PEFP), H2O2 concentration reaction time optimized. Optimum operation conditions of the FP pH 3.5, 1.4 gr/L Fe2+ 50 150 min. while they 3.00, 9.99 mA/cm2 current dens...

A degradation study of diazepam (DZP) in aqueous media by gamma radiation, high frequency ultrasound, and UV radiation (artificial-solar), as well with each process intensified oxidizing agents (H2O2 Fenton reagent) was performed. The parameters that influence the such potency frequency, irradiation dose, pH concentration used were studied. Gamma performed a 60Co source irradiator; an 11 W lamp...

ABSTRACT. In this study, the effect of Fenton and photo-Fenton processes, which are advanced oxidation processes that use hydroxyl radical for decolorization Novacron Black from aqueous solutions, on was investigated. Optimum levels initial pH, temperature, hydrogen peroxide concentration, dyestuff iron concentration were determined. Initial Fe2+ most effective experimental parameters in with p...

BACKGROUND Fenton reaction (Fe2++H2O2→Fe3++•OH+OH-) is of special significance in the thyroid gland, as both its substrates, i.e. H2O2 and Fe2+, are required for thyroid hormone synthesis. Also iodine, an essential element supplied by the diet, is indispensable for thyroid hormone synthesis. It is well known that iodine affects red-ox balance. One of the most frequently examined oxidative proce...

Fe is an essential element for the growth and well-being of almost all living organisms, except for some strains of lactobacillus, where the role of Fe may be assumed by another metal [1]. It is involved in many biological functions since by varying the ligands to which it is coordinated, Fe has access to a wide range of redox potentials and can participate in many electron transfer reactions, ...

Baccharis dracunculifolia DC (Asteraceae) is the main botanical source used by honeybees to produce Brazilian green propolis whose hepatoprotective properties have been already described. In this work we investigated the protective effects of the glycolic extract of B. dracunculifolia (GEBd) against oxidative stress in isolated rat liver mitochondria (RLM). The GEBd was prepared by fractionated...

Sulfamethoxazole is metabolized by microsomal CYP2C9 to a hydroxylamine that is thought to be responsible for the relatively high incidence of hypersensitivity reactions associated with the drug. Accurate quantification of the hydroxylamine requires the loss of metabolite through autoxidation to be blocked with ascorbate. In this study, a partly nonenzymatically generated arylhydroxylated deriv...

Intracellular iron reportedly mediates many forms of tissue injury, including ischemic and myohemoglobinuric acute renal failure. This action may be explained by the ability of iron to catalyze the formation of the highly toxic hydroxyl radical (.OH) from H2O2 via the Fenton/Haber-Weiss reactions. To assess whether renal tubular myoglobin/iron loading, induced by a physiological mechanism (endo...