Oxidation of sulfur dioxide in aqueous ammonium sulfate aerosols containing manganese as a catalyst

Kaplan, Dima; Himmelblau, D. M.; Kanaoka, Chikao

doi:10.1016/0004-6981(81)90280-8

Cited by 39 publications

(10 citation statements)

References 26 publications

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“…In previous dynamic flow studies either high SOs mixing ratios in the ppm-range were used (e.g., Matteson et al, 1969;Cheng et al, 1971;Cains and Carabine, 1978;Crump et al, 1983;Dlugi, 1983) or the data obtained were too scarce to be very informative (Kaplan et al, 1981). Our experimental set-up is very similar to that of Matteson et al (1969).…”

Section: Introductionmentioning

confidence: 99%

Study of metal aerosol systems as a sink for atmospheric SO2

Berresheim

Jaeschke

1986

J Atmos Chem

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The chemical removal of SO 2 in the presence of different aerosol systems has been investigated in laboratory experiments using a dynamic flow reactor. The aerosols consisted of wetted particles containing one of the following substances: MnC12, Mn(NO3)2, MnSO4, CuCI2, Cu(NO3)2, CuSO4, FeC13, NaCI. The SO2 removal rate R was measured as a function of the SO2 gas phase concentration (SO 2)g, the spatial metal concentration CMe , and the relative humidity rH in the reactor. A first-order dependence with regard to (SO 2)g was observed for each type of aerosol. For the Mn(II) and Cu(II) aerosols R was found to be a non-linear function of CMe except for MnSO a and Cu(NO 3)2 particles. The removal rate showed a significant increase with the relative humidity particularly when rH was close to the deliquescence point of the wetted particles. Among the Mn(II) and Cu(II) aerosols investigated Mn(NO3) 2 was found to be most efficient for the chemical removal of SO 2 at atmospheric background conditions, especially in haze and fog droplets. The results further indicate that the catalytic oxidation of S(IV) in such aerosol systems may be as efficient as its oxidation by H20 2 in cloud water.

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Section: Introductionmentioning

confidence: 99%

Study of metal aerosol systems as a sink for atmospheric SO2

Berresheim

Jaeschke

1986

J Atmos Chem

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“…These high acidities have raised concern regarding potential damage to materials, vegetation (5), crops (6), and public health (7). Laboratory studies have shown that aqueous-phase oxidation of S(IV) to S(VI) can proceed rapidly under the conditions found in fog droplets (8) and in the precursor aerosol at high humidities (9). Field data suggest that aqueous aerosols are important sites for the conversion of S02 to H2S04 in the atmosphere (10)(11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

“…This is unfortunate because the Niagara River is the major water source for Lake Ontario; 83% of Lake Ontario's total water input and 50% of the lake's annual suspended solid load enter through the Niagara River each year (2). As a result, anthropogenic pollutants have been found to be transported by the Niagara River to Lake Ontario and to accumulate in the sediment (3-8) and in fish and other aquatic organisms (9)(10)(11)(12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Chemical composition of fogwater collected along the California coast

Jacob¹,

Waldman²,

Munger³

et al. 1985

Environ. Sci. Technol.

155

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“…23, No. 8, 1984 1137 MnOH2+ + HSOf -MnS03+ + H20 (8) followed by the fast step 2MnS03+ -2Mn2+ + S2062" (9) Kinetic measurements alone are not sufficient to distinguish reaction 8 from reaction 6.…”

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confidence: 99%