The efficiency of treatment was eliminated based on residual concentration ammonia-nitrogen (NH4-N) and chemical oxygen demand (COD). Removal percentage ammonia in case using H2O2 increased a 30%. the removal organic pollutants recorded high 14.28 10.71% for east El-Burullus Damru drains, respectively. KMnO4 gave better results which, maximum 66.59 % 0.2 g/L Hokx site, whereas COD 34.48 at 0.1o...

This work presents a disruptive approach to promote highly-efficient photo-Fenton process at neutral pH under continuous mode operation. The system consists of tube-in-tube membrane reactor designed for continuous-flow titration low iron doses the annular reaction zone (ARZ). A concentrated acidic ferrous ion (Fe2+) solution is fed by lumen-side membrane, permeating through pores (inside-out mo...

A novel Raman spectroscopic model for the dinuclear iron site in ribonucleotide reductase and met-hemerythrin, [Fe2(micro-O)(phen)4(H2O)2]4+, 1, (phen = 1,10-phenanthroline) quantitatively oxidizes hydrogen peroxide to dioxygen via an inner-sphere electron transfer pathway. Although 1 deprotonates to form [Fe2(micro-O)(phen)4(H2O)(OH)]3+ (2) and [Fe2(micro-O)(phen)4(OH)2]2+ (3) in aqueous media...

Petrochemical manufacturing wastewaters often contain a high concentration of biodegradable com-pounds that possess either toxicity or activity inhibition to the biological unit. In this paper, COD removal from Petrochemical wastewaters by electro-Fenton process was studied. The effect of operating conditions such as reaction time, current density, pH, H2O2/Fe2+ molar ratio, and H2O2 of petroch...

The Photo Fenton process is an alternative for the treatment of effluents from textile industry, being a reagent-based chemical on Fe2+ and H2O2 + UV light, whose mechanism consists oxidizing pollutants until they are suitable discharge into bodies water. This research seeks to determine optimum concentration - in synthetic effluent and, subsequently, evaluate efficiency system. was prepared un...

This research was focused on the investigation of the efficacy of advanced oxidation processes (Fenton, ozonation and UV/H2O2) for decolorization of reactive azo dye (Blue CL-BR) using bleach wastewater as possible source of H202. All the experiments were performed on the laboratory scale set-up. The results showed that colour removal efficiencies by UV or bleach (H2O2) alone were not so effici...

Diquat is a hepatotoxin whose toxicity in vivo and in vitro is mediated by redox cycling and greatly enhanced by pretreatment with 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU), an inhibitor of glutathione reductase. The mechanism by which redox cycling mediates diquat cytotoxicity is unclear, however. Here, we have attempted to examine the roles of three potential products of redox cycling, name...

Hydrogen peroxide (H2O2) and Cu(OAc)2 or FeSO4 (Fenton type reagents) perform heparin (Hep) depolymerisation to low-molecular-weight heparin (LMWH) following a radical chain mechanism. Hydroxyl (OH) radicals which are initially generated from H2O2 reduction by transition metal ions abstract hydrogen atoms on the heparin chain providing carbon centred radicals whose decay leads to the depolymeri...

Diclofenac sodium was extensively used for treating arthritis, osteoarthritis and skeletal muscular injuries, which ultimately caused troubles aquatic organisms as well human beings. In this study, homogeneous catalytic advanced oxidation processes, including Fe2+/persulfate, Fe2+/peroxymonosulfate Fe2+/H2O2, were the degradation of diclofenac in water, without using UV-C light. About 89, 82 54...