Oxidation of Acetamide Herbicides in Natural Waters by Ozone and by the Combination of Ozone/Hydrogen Peroxide:  Kinetic Study and Process Modeling

2003 ◽  
Vol 42 (23) ◽  
pp. 5762-5769 ◽  
Author(s):  
Juan L. Acero ◽  
F. Javier Benitez ◽  
Francisco J. Real ◽  
Cecilia Maya
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Process Modeling ◽  
Natural Waters

scholarly journals Kinetic study of the inactivation of ascorbate peroxidase by hydrogen peroxide

2000 ◽  
Vol 348 (2) ◽  
pp. 321 ◽  
Author(s):  
Alexander N.P. HINER ◽  
José Neptuno RODRÍGUEZ-LÓPEZ ◽  
Marino B. ARNAO ◽  
Emma LLOYD RAVEN ◽  
Francisco GARCÍA-CÁNOVAS ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Ascorbate Peroxidase

scholarly journals A Kinetic Study of the Reaction of isoPropoxy-methyl-phosphoryl Fluoride (Sarin) with Hydrogen Peroxide.

1958 ◽  
Vol 12 ◽  
pp. 723-730 ◽  
Author(s):  
Lennart Larsson ◽  
Börje Wickberg ◽  
Einar Stenhagen ◽  
Lars Gunnar Sillén ◽  
B. Zaar ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study

Hydroxyl radical formation from bacteria-assisted Fenton chemistry at neutral pH under environmentally relevant conditions

2016 ◽  
Vol 13 (4) ◽  
pp. 757 ◽  
Author(s):  
Jarod N. Grossman ◽  
Tara F. Kahan
Keyword(s):  
Hydrogen Peroxide ◽  
Hydroxyl Radical ◽  
Natural Waters ◽  
Shewanella Oneidensis ◽  
Radical Formation ◽  
Production Rates ◽  
Fenton Chemistry ◽  
Iron Reducing Bacteria ◽  
Neutral Ph ◽  
Reducing Bacteria

Environmental contextReactions in natural waters such as lakes and streams are thought to be extremely slow in the absence of sunlight (e.g. at night). We demonstrate that in the presence of iron, hydrogen peroxide and certain bacteria (all of which are common in natural waters), certain reactions may occur surprisingly quickly. These findings will help us predict the fate of many compounds, including pollutants, in natural waters at night. AbstractDark Fenton chemistry is an important source of hydroxyl radicals (OH•) in natural waters in the absence of sunlight. Hydroxyl radical production by this process is very slow in many bodies of water, owing to slow reduction and low solubility of FeIII at neutral and near-neutral pH. We have investigated the effects of the iron-reducing bacteria Shewanella oneidensis (SO) on OH• production rates from Fenton chemistry at environmentally relevant hydrogen peroxide (H2O2) and iron concentrations at neutral pH. In the presence of 2.0 × 10–4M H2O2, OH• production rates increased from 1.3 × 10–10 to 2.0 × 10–10Ms–1 in the presence of 7.0 × 106cellsmL–1 SO when iron (at a concentration of 100μM) was in the form of FeII, and from 3.6 × 10–11 to 2.2 × 10–10Ms–1 when iron was in the form of FeIII. This represents rate increases of factors of 1.5 and 6 respectively. We measured OH• production rates at a range of H2O2 concentrations and SO cell densities. Production rates depended linearly on both variables. We also demonstrate that bacteria-assisted Fenton chemistry can result in rapid degradation of aromatic pollutants such as anthracene. Our results suggest that iron-reducing bacteria such as SO may be important contributors to radical formation in dark natural waters.

Oxidation kinetics of two pesticides in natural waters by ozonation and ozone combined with hydrogen peroxide

2011 ◽  
Vol 45 (8) ◽  
pp. 2517-2526 ◽  
Author(s):  
Pamela Chelme-Ayala ◽  
Mohamed Gamal El-Din ◽  
Daniel W. Smith ◽  
Craig D. Adams
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidation Kinetics ◽  
Natural Waters ◽  
Kinetics Of

scholarly journals A modification of the hydrogen peroxide method of determination of total phosphorus in natural waters

1982 ◽  
Vol 16 (6) ◽  
pp. 1061-1064 ◽  
Author(s):  
F. Cabrera ◽  
E. Diaz ◽  
C.G. Toca ◽  
P. De Arambarri
Keyword(s):  
Hydrogen Peroxide ◽  
Total Phosphorus ◽  
Natural Waters ◽  
Method Of Determination ◽  
Peroxide Method

Kinetic Study of Peroxidase-Catalyzed Coupling of Benzene-1,4-diamine and N-(2-Aminoethyl)naphthalen-1-amine: Development of Micromolar Hydrogen Peroxide Reaction System

2010 ◽  
Vol 93 (6) ◽  
pp. 1227-1237 ◽  
Author(s):  
Anantharaman Shivakumar ◽  
Padmarajaiah Nagaraja ◽  
Narayanan Aradhana ◽  
Avinash K. Gowda
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Reaction System
Sign in / Sign up

Export Citation Format

Share Document