نتایج جستجو برای: fenton reaction

تعداد نتایج: 414721  

Journal: :Chemosphere 2011
Hyeongsu Che Woojin Lee

Selective redox degradation of chlorinated aliphatics by Fenton reaction in pyrite suspension was investigated in a closed system. Carbon tetrachloride (CT) was used as a representative target of perchlorinated alkanes and trichloroethylene (TCE) was used as one of highly chlorinated alkenes. Degradation of CT in Fenton reaction was significantly enhanced by pyrite used as an iron source instea...

2018

Submit Manuscript | http://medcraveonline.com the reaction called the Fenton method [1]. Early research on the Fenton reaction was mainly focused on organic synthesis, enzymatic reactions and the cell damage mechanism [2]. It was noted that in the presence of a catalyst, H2O2 can be efficiently decomposed to generate oxidative active substances with strong oxidizing power, and degrade a variety...

2005
Deepak Ahuja Leonidas Bachas

Deepak Ahuja, Leonidas Bachas, D.Bhattacharyya Department of Chemical & Materials Engineering, and Department of Chemistry, University of Kentucky, Lexington, KY 40506-0046 *Corresponding author: Dr. D.Bhattacharyya, Alumni Professor, Phone: (859)257-2794, e-mail: [email protected] . Abstract. Various remediation technologies are being developed for the destruction of groundwater pollutants like ...

Journal: :Applied and environmental microbiology 2016
Ramanan Sekar Martial Taillefert Thomas J DiChristina

Improper disposal of 1,4-dioxane and the chlorinated organic solvents trichloroethylene (TCE) and tetrachloroethylene (also known as perchloroethylene [PCE]) has resulted in widespread contamination of soil and groundwater. In the present study, a previously designed microbially driven Fenton reaction system was reconfigured to generate hydroxyl (HO˙) radicals for simultaneous transformation of...

اسرافیلی, علی, جنیدی جعفری, احمد, فرزادکیا, مهدی, میرزایی, سحر,

Background and purpose: Paraquat (PQ) is a bipyridinium herbicide that is very soluble in water. This non-selective contact herbicide is widely used in agriculture for weed control. In addition to the environmental impact, paraquat affects the entire body, especially the respiratory system, central nervous system and lymph nodes. In this study degradation of paraquat was investigated using Fent...

2005
K. Barbusiński

A novel modified Fenton process using heterogeneous catalyst (swarf) was developed to catalyze the oxidation reaction of azo dye Acid Red 18. It was found that swarf could be used to replace iron salts as a catalyst for the Fenton reaction. The examined continuous Fenton process proved to be very efficient for decolorization of simulated wastewater containing 100 mg/dm3 Acid Red 18. Performance...

Journal: :Applied and environmental microbiology 2003
J B Cross R P Currier D J Torraco L A Vanderberg G L Wagner P D Gladen

An approach to decontamination of biological endospores is discussed. Specifically, the performance of an aqueous modified Fenton reagent is examined. A modified Fenton reagent formulation of cupric chloride, ascorbic acid, and sodium chloride is shown to be an effective sporicide under aerobic conditions. The traditional Fenton reaction involves the conversion of hydrogen peroxide to hydroxyl ...

2014
S. A. Mir A. S. Bhat A. A. Ahangar

A new, simple assay has been optimized to generate and detect hydroxyl radical by Fenton reaction. The assay is based on oxidation of catechol, monitored at 360 nm following incubation at room temperature for ca. 30 minutes, with linearity over 0.25 through 2.5 μmole H2O2 using Fe (II) (0.5 μmole) and acidified catechol (0.5 mg). The Fenton reaction has been characterized by registering: (i) ab...

Journal: :تحقیقات نظام سلامت 0
شاهین بهزادی گروه مهندسی محیط زیست – آب و فاضلاب، دانشگاه آزاد اسلامی واحد علوم و تحقیقات خوزستان، خوزستان، ایران منصوره دهقانی گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شیراز، فارس، ایران محمد صادق سخاوتجو گروه مهندسی محیط زیست – آب و فاضلاب، دانشگاه آزاد اسلامی واحد علوم و تحقیقات خوزستان، خوزستان، ایران حسن هاشمی مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران

and cause health and environmental effects. this study investigates the optimization of the parameters affecting the advanced oxidation process fenton for improving toc removal from aqueous solution includes amoxicillin antibiotic by using taguchi experimental design. methods: in this study for evaluation the effect of factors and determination optimal conditions to removal toc by fenton proces...

Journal: :health scope 0
hossein jafari mansoorian health promotion research center, zahedan university of medical sciences, zahedan, ir iran; health promotion research center, zahedan university of medical sciences, zahedan, ir iran. tel: +98-918813385, fax: +98-5413425837 edris bazrafshan health promotion research center, zahedan university of medical sciences, zahedan, ir iran ahmadreza yari research center for environmental pollutants, qom university of medical sciences, qom, ir iran mostafa alizadeh students scientific research center, zahedan university of medical sciences, zahedan, ir iran

background fenton (fe2+ and h2o2) and modified fenton (fe3+ and h2o2) are two popular methods used in advanced oxidation processes (aop) and degradation of persistent organic pollutants (pops), such as dye compounds. in these processes, fe2+ and fe3+ as catalysts and h2o2 as the oxidizing agent are added to the reactor. objectives the aim of the current study is to assess the abovementioned met...

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