Naphthalimide Assemblies for Simultaneous Detection of Ferrous Ion and H 2 O 2 to Prevent Fenton Reaction

2021 ◽  
Vol 6 (7) ◽  
pp. 1692-1698
Author(s):  
Amrit Kaur ◽  
Mandeep Kaur ◽  
Vandana Bhalla ◽  
Manroop Singh ◽  
A.J.S. Bhanwer ◽  
...  
Keyword(s):  
Fenton Reaction ◽  
Simultaneous Detection ◽  
Ferrous Ion

Innovative water treatment system coupled with energy production using photo-Fenton reaction

2009 ◽  
Vol 60 (10) ◽  
pp. 2589-2597 ◽  
Author(s):  
M. Tokumura ◽  
R. Morito ◽  
A. Shimizu ◽  
Y. Kawase
Keyword(s):  
Electric Power ◽  
Fenton Reaction ◽  
Energy Production ◽  
Acidic Solution ◽  
Electric Energy ◽  
Hydrogen Gas ◽  
Ferrous Ion ◽  
Orange Ii ◽  
Fenton Process ◽  
Inlet Concentration

The treatment of colored effluent coupled with energy production using a modified photo-Fenton process has been examined. Fe and carbon plates were employed as an anode and cathode, respectively. In acidic solution, Fe plates would corrode, which leads to elute ferrous ion from Fe plates into the solution and to yield hydrogen gas at the cathode and to generate an electric energy. The eluted ferrous ion could be used for the photo-Fenton reaction. As a result, decolorization of colored effluent and production of electricity and hydrogen could be carried out simultaneously and effectively. It was found that the Orange II concentration in the colored effluent flow decreased up to 84.2% of inlet concentration at 0.8 of relative position in the liquid flow path of continuous photo-reactor. In our proposed system, the energy production, such as an electric power and a hydrogen gas, can be generated at the same time as the decolorization of colored effluent. The produced electric power was 16.5 Wh kg−1-Fereacted. The produced hydrogen gas was estimated as 13 g-H2 kg−1-Fereacted.

scholarly journals Ferrous and Ferric Ion-Facilitated Dilute Acid Pretreatment of Lignocellulosic Biomass under Anaerobic or Aerobic Conditions: Observations of Fe Valence Interchange and the Role of Fenton Reaction

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1427
Author(s):  
Hui Wei ◽  
Wei Wang ◽  
Peter N. Ciesielski ◽  
Bryon S. Donohoe ◽  
Min Zhang ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Fenton Reaction ◽  
Dilute Acid Pretreatment ◽  
Ferrous Ion ◽  
Ferric Ion ◽  
Dilute Acid ◽  
Ferric Ions ◽  
Ferrous Ions ◽  
Acid Pretreatment ◽  
Co Catalyst

Ferrous ion co-catalyst enhancement of dilute-acid (DA) pretreatment of biomass is a promising technology for increasing the release of sugars from recalcitrant lignocellulosic biomass. However, due to the reductive status of ferrous ion and its susceptibility to oxidation with exposure to atmosphere, its effective application presumably requires anaerobic aqueous conditions created by nitrogen gas-purging, which adds extra costs. The objective of this study was to assess the effectiveness of oxidative iron ion, (i.e., ferric ion) as a co-catalyst in DA pretreatment of biomass, using an anaerobic chamber to strictly control exposure to oxygen during setup and post-pretreatment analyses. Remarkably, the ferric ions were found to be as efficient as ferrous ions in enhancing sugar release during DA pretreatment of biomass, which may be attributed to the observation that a major portion of the initial ferric ions were converted to ferrous during pretreatment. Furthermore, the detection of hydrogen peroxide in the liquors after DA/Fe ion pretreatment suggests that Fenton reaction chemistry was likely involved in DA/Fe ion pretreatments of biomass, contributing to the observed ferric and ferrous interchanges during pretreatment. These results help define the extent and specification requirements for applying iron ions as co-catalysts in DA pretreatments of biomass.

Large scale development of a light-enhanced fenton reaction by optimal experimental design

1997 ◽  
Vol 35 (4) ◽  
pp. 223-230 ◽  
Author(s):  
E. Oliveros ◽  
O. Legrini ◽  
M. Hohl ◽  
T. Müller ◽  
A. M. Braun
Keyword(s):  
Waste Water ◽  
Hydrogen Peroxide ◽  
Experimental Design ◽  
Industrial Waste ◽  
Fenton Reaction ◽  
Large Scale ◽  
Ferrous Ion ◽  
Industrial Waste Water ◽  
Degradation Rates ◽  
Experimental Design Methodology

Photochemical advanced oxidation processes (AOP) for the treatment of waste waters containing biocidal or non-biodegradable organic compounds rely mainly on the production of a potent oxidizing agent, the hydroxyl radical. The Fenton's reagent, a mixture of hydrogen peroxide and ferrous ion, represents one possible source of hydroxyl radicals and it has been shown recently that degradation rates may be significantly enhanced by UV/visible irradiation. In this context, we have investigated the feasibility of a large scale application of the light-enhanced Fenton reaction to the treatment of a highly contaminated industrial waste water containing toxic aromatic amines (dimethyl anilines or xylidines) as the main pollutants. Following preliminary laboratory tests performed on the model compounds, 2,4- and 3.4-xylidines (200 mg/L, 2 L), experimentation on the industrial waste water at a large scale level (3000 mgC/L, 500 L) has been carried out using the experimental design methodology for the simulation and the evaluation of the effects of the two critical factors, hydrogen peroxide and ferrous ion concentrations. The light-enhanced Fenton reaction has been proven to be a most effective treatment process under acidic conditions and might be an alternative to adsorption of xylidines on activated carbon as used at present.

Investigation of the reaction pathway of OH radicals produced by Fenton oxidation in the conditions of wastewater treatment

2001 ◽  
Vol 44 (5) ◽  
pp. 15-15 ◽  
Author(s):  
J. Yoon ◽  
Y. Lee ◽  
S. Kim
Keyword(s):  
Landfill Leachate ◽  
Fenton Reaction ◽  
Reaction Pathway ◽  
Oxidation Products ◽  
Ferrous Ion ◽  
Oh Radicals ◽  
Effective Manner ◽  
Short Period ◽  
High Concentrations ◽  
Fenton System

Fenton reaction has been often used to treat industrial wastewater or landfill leachate. However, most mechanistic research into the Fenton reaction has been confined to low concentration conditions (usually the concentration of iron is less than 1 mM). These conditions are removed from the circumstances of real application. This is especially true in the treatment of landfill leachate in Korea. Therefore, we investigated the characteristics of the Fenton system using high concentrations of iron (mostly [Fe2+] = 1∼10 mM, [H2O2] = 5 mM, [Organic (t-BuOH or methanol)] = 0 or 30 mM) and interpreted the results from the known reaction mechanisms of the Fenton system. As a result, the use of high ferrous ion [≥1 mM) is believed to be appropriate for producing large quantities of OH• within a short period of time, causing fast consumption of hydrogen peroxide. However, OH• scavenging by the ferrous ion, the changes of oxidation products due to the oxygen depleted conditions, and the precipitation effect of ferric ion must be considered for the successful application of Fenton reaction. On the other hand, in low ferrous ion (<1 mM), it is important to utilize the redox cycles of iron in an effective manner.

scholarly journals Simultaneous Detection of Adenosine Triphosphate and Glucose Based on the Cu-Fenton Reaction

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2151 ◽  
Author(s):  
Fei Qu ◽  
Jingwen Li ◽  
Wenli Han ◽  
Lian Xia ◽  
Jinmao You
Keyword(s):  
Adenosine Triphosphate ◽  
Fenton Reaction ◽  
Simultaneous Detection

MOTIONS IN A VISCOUS INORGANIC LIQUID : FERROUS ION IN COLD PHOSPHORIC ACID

1976 ◽  
Vol 37 (C6) ◽  
pp. C6-739-C6-743 ◽  
Author(s):  
P. A. FLINN ◽  
B. J. ZABRANSKY ◽  
S. L. RUBY
Keyword(s):  
Phosphoric Acid ◽  
Ferrous Ion

Species Specific Immunoassays to Measure Blood Platelet and Coagulation Activation in the Rat

1996 ◽  
Vol 76 (06) ◽  
pp. 1090-1095 ◽  
Author(s):  
C Ravanat ◽  
M Freund ◽  
S Schuhler ◽  
P Grunert ◽  
L Meyer ◽  
...  
Keyword(s):  
Antithrombin Iii ◽  
Plasma Concentrations ◽  
Simultaneous Detection ◽  
Blood Platelet ◽  
Coagulation Activation ◽  
Platelet Factor ◽  
Prethrombotic State ◽  
Low Levels ◽  
Species Specific ◽  
Higher Sensitivity

SummaryThe purpose of this study was to develop specific and sensitive immunoassays to detect early indices of hypercoagulability in the rat. Rat platelet factor 4 (rPF4) and rat fibrinopeptide A (rFPA) assays, tools for the detection of activation of platelets and coagulation respectively, were designed using antibodies raised against purified rPF4 and against synthetic rFPA. The relevance of these new assays and of the commercially available ELISA kit for thrombin-antithrombin III (TAT) complexes was demonstrated in a rat model of a prethrombotic state induced by intravenous infusion of varying doses of thromboplastin (90 to 2400 μl/kg/h). In this model, the immunoassays allowed simultaneous detection of low levels of rFPA and rPF4 which were correlated with fibrinogen and platelet consumption and TAT generation and further proved to be of higher sensitivity than the classical methods of platelet count or measurement of fibrinogen levels. Plasma concentrations of rFPA, rPF4 and TAT were dependent on infusion time and thromboplastin dose, while hirudin (1 mg/kg) prevented their appearance. Thus the new specific immunoassays for rPF4 and rFPA and the commercial human TAT assay represent useful tools for pathophysiological studies or the screening of antithrombotic drugs in rats.

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