Pilot-scale validation of the kinetics of SO2 absorption into sulphuric acid solutions containing hydrogen peroxide

2004 ◽  
Vol 43 (11) ◽  
pp. 1397-1402 ◽  
Author(s):  
Sandrine Colle ◽  
Jacques Vanderschuren ◽  
Diane Thomas
Keyword(s):  
Hydrogen Peroxide ◽  
Sulphuric Acid ◽  
Scale Validation ◽  
Pilot Scale ◽  
Acid Solutions ◽  
Kinetics Of ◽  
So2 Absorption

Decarbonylation Kinetics of Formic Acid in Aqueous Sulphuric Acid Solutions

1976 ◽  
Vol 318 (2) ◽  
pp. 202-206 ◽  
Author(s):  
G. Ciuhandu ◽  
A. Dumitreanu ◽  
Z. Simon
Keyword(s):  
Formic Acid ◽  
Sulphuric Acid ◽  
Acid Solutions ◽  
Kinetics Of

The reaction between peroxomonosulphuric acid and cerium(IV) in dilute sulphuric acid solutions

1970 ◽  
Vol 23 (4) ◽  
pp. 641 ◽  
Author(s):  
WHO Billing ◽  
GJ Bridgart ◽  
IR Wilson
Keyword(s):  
Hydrogen Peroxide ◽  
Sulphuric Acid ◽  
Acid Solutions ◽  
Radical Chain ◽  
Rate Law ◽  
Early Stages

The reaction of cerium(1V) with peroxomonosulphuric acid in aqueous sulphuric acid has been shown to involve a short radical chain. Rates of reaction of cerium(1V) have been measured in dilute sulphuric acid solutions. A substantial difference was found between the apparent rate law in the early stages of reaction and that observed later. This is not due to the presence of hydrogen peroxide in the peroxomonosulphate solutions. A tentative mechanism is proposed.

scholarly journals Kinetics of Manganese Oxides Dissolution in Sulphuric Acid Solutions Containing Oxalic Acid

Engineering ◽  
2013 ◽  
Vol 05 (09) ◽  
pp. 714-719 ◽  
Author(s):  
I. V. Artamonova ◽  
I. G. Gorichev ◽  
E. B. Godunov
Keyword(s):  
Oxalic Acid ◽  
Sulphuric Acid ◽  
Manganese Oxides ◽  
Acid Solutions ◽  
Kinetics Of

scholarly journals Kinetics of pyrite oxidation by hydrogen peroxide in phosphoric acid solutions

1999 ◽  
Vol 64 (12) ◽  
pp. 753-764 ◽  
Author(s):  
Mile Dimitrijevic ◽  
Milan Antonijevic ◽  
Valentina Dimitrijevic
Keyword(s):  
Hydrogen Peroxide ◽  
Phosphoric Acid ◽  
Pyrite Oxidation ◽  
Negative Influence ◽  
Acid Solutions ◽  
Phosphate Ion ◽  
Shrinking Core ◽  
Kinetics Of ◽  
Rate Controlling Step ◽  
Oxidation By Hydrogen Peroxide

The kinetics of pyrite oxidation by hydrogen peroxide in phosphoric acid solutions were investigated. The effects of stirring, temperature, and particle size, as well as of the hydrogen peroxide and phosphoric acid concentrations were studied. The effect of phosphate ion addition was also examined. The oxidation kinetics was found to follow a shrinking core model, with the surface chemical reaciton as the rate-controlling step. This is in accord with an activation energy of 57 kJ/mol and a linear relationship between the rate constant and the reciprocal of the particle radius. The reaction order with respect to the hydrogen peroxide concentration was found to be equal to unity. Variation of the phosphoric acid concentration had practically no effect on the rate of pyrite oxidation. Addition of the phosphate ion in the relatively low concentration range (0.005.0.1 mol/dm 3) had a highly negative influence on the rate of pyrite oxidation, indicating that this ion has an inhibiting effect on the oxidation of pyrite by hydrogen peroxide.

Dissolution kinetics of galena in acetic acid solutions with hydrogen peroxide

2007 ◽  
Vol 89 (3-4) ◽  
pp. 189-195 ◽  
Author(s):  
Salih Aydoğan ◽  
Ali Aras ◽  
Gökhan Uçar ◽  
Murat Erdemoğlu
Keyword(s):  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Dissolution Kinetics ◽  
Acid Solutions ◽  
Kinetics Of
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