نتایج جستجو برای: fenton
تعداد نتایج: 3543 فیلتر نتایج به سال:
Background and purpose: Industries are one of the main sources of producing wastewater accounting for 20% of water pollution. Treatment of dye wastewaters is one of the major challenges in textile industry. The aim of this study was to investigate the performance of advanced oxidation processes, Fenton-Peracetic acid and Photo-Fenton-Peracetic acid for removal of methylene blue (MB) dye from ...
Combining ultrasonic irradiation and the Fenton process as a sono-Fenton process, chemical oxygen demand (COD) in refinery wastewater was successfully eliminated using response surface methodology (RSM) with central composite design (CCD). The impact of two main influential operational parameters (iron dosage reaction time) on COD removal from generated by an Iraqi petroleum facility explored. ...
Reactive oxygen species are involved in many diseases where the radical species OH, peroxynitrite and the non-radical, hypochlorous acid, play an outstanding role. The formation of OH-type oxidants is essentially confined to a few types of reactions. The most prominent ones are the one-electron reduction of hydrogen peroxide by F2+ or Cu+ -ions (Fenton-type reactions), reaction of hypochlorite ...
UNLABELLED Iron and copper toxicity has been presumed to involve the formation of hydroxyl radical (*OH) from H2O2 in the Fenton reaction. The aim of this study was to verify that Fe2+-O2 and Cu+-O2 chemistry is capable of generating *OH in the quasi physiological environment of Krebs-Henseleit buffer (KH), and to compare the ability of the Fe2+-O2 system and of the Fenton system (Fe2+ + H2O2) ...
Background and purpose: In activated sludge process large amounts of sludge are produced. The disposal and management of this sludge remains a big challenge due to environmental, economic, social and legal factors. Thus, selecting an appropriate process that could reduce sludge would be of great help in solving this problem. The aim of present research was to determine the effects of three pr...
Background and Aim: Nowadays, regarding the increased human and geological activities, concentrations of toxic and carcinogenic disinfectant by-products– like Trihalomethanes -which have an organic base, in drinking water sources, has worryingly increased. Thus, the present study aimed at surveying the amount of dissolved organic carbon (doc) removed from aqueous solution by Fenton process. Mat...
Background and objectives: Because of problems dealing with bioremediation including being time consuming, low efficiency and toxicity to biota, application of advanced oxidation processes with higher efficiency and shorter remediation time have been considered for removal of hydrophobic hydrocarbons from contaminated soils. A great interest has been directed to Fenton oxidation because of its ...
Background and purpose: Microbial electro-Fenton system as a novel technology can be employed in removal of resistant organic pollutants along with generation of renewable electrical energy through the activity of anaerobic microorganisms. This study aimed at investigating the performance of this process in treatment of synthetic wastewater containing tetracycline and generation of electricity ...
several laundry houses throughout tehran consume a large amount of water each day and discharge the resulting wastewater into septic tanks or municipal sewage system without any suitable pretreatment. this would result in severe contamination and other serious environmental issues. in the present study, performance of electrocoagulation/flotation process with aluminum and iron electrodes is com...
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