Radiation-induced oxidation of HSO-3 in aqueous solution

doi:10.1016/0969-806X(94)90191-0

Radiation Physics and Chemistry

Volume 43, Issue 3, March 1994, Pages 281-289

https://doi.org/10.1016/0969-806X(94)90191-0 Get rights and content

Abstract

Kinetics of HSO⁻₃ oxidation under e-beam irradiation has been studied. The ranges of main parameters: initial bisulfite concentration—2 × 10^-4−3 × 10^-2 M, pH ≈ 2−4, dose rate—I = 10^-3−10 kGy s^-1. The stoichiometry of HSO^-₃ oxidation in deaerated and aerated solutions was established. In deaerated solution the competition of reactions of H atoms with HSO^-₃ (k₁) and SO₂ (k₂) was observed. The estimated rate constants: k₁ of order 10⁷ and k₂ of order 5 × 10⁷ M^-1 s^-1. It was found that only sulfate has been produced in SO^-₃ radicals self-recombination. For aerated solution at 1 ⩽ 10^-1 kGy s^-1 HSO^-₃ oxidation proceeds in degenerated chain regime with main termination reaction HO₂ + SO^-₅ and maximum chain length ≈ 10. The influence of mass-transfer processes to the oxidation rate in thin water film in a contact with gas mixture air-SO₂ has been also investigated.

References (28)

G.V. Buxton et al.
Effect of temperature and scavenging power on the sum of G(e^-_aq) + G(H) + G(OH) in the range 20–200°C—a pulse radiolysis study
Radiat. Phys. Chem.
(1989)
R.E. Huie et al.
Rate constants for some oxidations of S(IV) by radicals in aqueous solutions
Atmosph. Environ.
(1987)
R.E. Huie et al.
A pulse radiolysis and flash photolysis study of the radicals SO^-₂, SO^-₃, SO^-₄ and SO^-₅
Radiat. Phys. Chem.
(1989)
S. Jordan
On the state of the art of flue gas cleaning by irradiation with fast electrons
Radiat. Phys. Chem.
(1990)
W.J. McElroy
The aqueous oxidation of SO₂ by OH radicals
Atmospher. Environ.
(1986)
H.-R. Paur et al.
Aerosol formation in the electron beam dry scrubbing process (ES-VER-FAHREN)
Radiat. Phys. Chem.
(1988)
J.C. Person et al.
Removal of SO₂ and NO_x from stack gases by electron beam irradiation
Radiat. Phys. Chem.
(1988)
T. Sadat-Shafai et al.
A radiolysis study of the role of superoxide ion in the oxidation of sulfite by oxygen
Radiat. Phys. Chem.
(1981)
C. Willis et al.
Experimental and calculated yields in the radiolysis of water at very high dose rates
Radiat. Phys. Chem.
(1969)
A.N. Yermakov et al.
Radiation-induced gaseous admixture oxidation in the droplet phase
Radiat. Phys. Chem.
(1992)

H. Båckstro̊m

The chain mechanism in the autooxidation of soudium solutions

Z. Phys. Chem.

(1934)

B.H.J. Bielski et al.

Reactivity of HO₂/O₂ radicals in aqueous solutions

J. Phys. Chem. Ref. Data

(1985)

U. Deister et al.

Photooxidation of SO²⁻₃ in aqueous solution

J. Phys. Chem.

(1990)

L. Dogliotti et al.

Flash photolysis of persulfate ions in aqueous solutions. Study of the sulfate and ozonide radical anions

J. Phys. Chem.

(1967)

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Radiation-induced oxidation of HSO-3 in aqueous solution

Abstract

Radiat. Phys. Chem.

Atmosph. Environ.

Radiat. Phys. Chem.

Radiat. Phys. Chem.

Atmospher. Environ.

Radiat. Phys. Chem.

Radiat. Phys. Chem.

Radiat. Phys. Chem.

Radiat. Phys. Chem.

Radiat. Phys. Chem.

The chain mechanism in the autooxidation of soudium solutions

Z. Phys. Chem.

Reactivity of HO2/O2 radicals in aqueous solutions

J. Phys. Chem. Ref. Data

Photooxidation of SO2−3 in aqueous solution

J. Phys. Chem.

Flash photolysis of persulfate ions in aqueous solutions. Study of the sulfate and ozonide radical anions

J. Phys. Chem.

Radiation-induced oxidation of HSO^-₃ in aqueous solution

Reactivity of HO₂/O₂ radicals in aqueous solutions

Photooxidation of SO²⁻₃ in aqueous solution