Oxidation of elemental-S in coastal-dune sands and soils

Skiba, U.; Wainwright, Milton

doi:10.1007/bf02182814

Cited by 17 publications

(7 citation statements)

References 6 publications

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“…Hassan and Olsen (7) have shown that the decrease in soil pH upon S addition was greater in acid soils than in calcareous soils. Hoeft and Sorensen (8) reports (6,12,19,20) indicating positive results of S application on soil pH and micronutrient availability in calcareous soils. organic matter, free oxides, and calcium carbonate.…”

Section: Discussionmentioning

confidence: 95%

Influence of sulfur and nitrogen fertilzer on the uptake of iron, manganese, and zinc by corn plants grown in calcareous soil

Soliman

Kostandi

Beusichem

1992

Communications in Soil Science and Plant Analysis

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A pot experiment was conducted with a coarse-textured calcareous soil (pH-H 2 O 8.3) to study the effect of single and combined application of N and S fertilizers on soil pH, Fe, Mn, Zn, and P mobilization, and on growth and micronutrient uptake by com (Zea mays L.). Increasing amounts of elemental sulfur were mixed with the soil. To stimulate S oxidation, the treated soils were incubated for six weeks at field capacity. Nitrogen was applied as NH 4 NO 3 (100, 200, and 400 mg N/kg). After six weeks, dry matter yields were recorded and shoots were analyzed for Fe, Mn, Zn, and P. At the end of the experiment, soil pH and the DTPA-extractable micronutrients were determined. The results showed that: a. Soil pH was decreased by 0.2, 0.5, and 0.9 unit as a result of increasing S applications.b. Applied sulfur and N fertilizer had increased the availability of micronutrients to following crops.c. Application of N and/or S resulted in increased dry matter yields.

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Section: Discussionmentioning

confidence: 95%

Influence of sulfur and nitrogen fertilzer on the uptake of iron, manganese, and zinc by corn plants grown in calcareous soil

Soliman

Kostandi

Beusichem

1992

Communications in Soil Science and Plant Analysis

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“…1966; Skiba and Wainwright, 1984) but was considered negligible at 3~ (Janzen and Bettany, 1987b). Using the micronized sulphur, oxidation proceeded almost to completion at 2~ albeit slowly.…”

Section: Discussionmentioning

confidence: 97%

“…It is known that the oxidation rate increases with decreasing particle size (Fox et al, 1964;Koehler and Roberts, 1983;Laishely et al, 1986;Li and Caldwell, 1966) and with increasing temperature (Janzen and Bettany, 1987b;Li and Caldwell, 1966;Nor and Tabatabai, 1977;Skiba and Wainwright, 1984). However the combination of very fine particle size and low temperature has not been investigated.…”

Section: Introductionmentioning

confidence: 94%

Oxidation of micronized elemental sulphur in soil

Chapman¹

1989

Plant Soil

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The rate of oxidation of micronized elemental sulphur in three soils was measured over a range of temperatures between 2 and 20~ Temperature had a marked effect with a Q10 (temperature coefficient) between 1.9-3.1. The period for 50% oxidation varied between 6-10 days at 20~ to between 36-42 days at 2~ All the oxidation curves showed an initial lag. At 20~ the oxidation rate was four times that of flowers of sulphur and was related to the smaller particle size. Additives (wetting and dispersing agents) in the commercial micronized sulphur preparation used ('Thiovit') were inhibitory at high concentrations but stimulatory at low concentrations. The significance to field conditions is discussed.

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“…The markedly lower but still measurable α O2 at 2.9°C in the current study was in agreement with the trend reported in the literature where S 0 oxidation rates are considered to decrease rapidly below 5°C. Low S 0 oxidation rates were measured at 5°C (Nor and Tabatabai, 1977) and 4°C (Li and Caldwell, 1966; Skiba and Wainwright, 1984), while Janzen and Bettany (1987b) reported negligible rates at 3°C. Chapman (1989) measured S 0 oxidation rates at 2°C; however, the micronized S 0 (particle diameter 1–6 μm) used had a very high reactive surface area per unit mass.…”

Section: Resultsmentioning

confidence: 94%

Controls and Rates of Acid Production in Commercial‐Scale Sulfur Blocks

et al. 2010

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Acidic drainage (pH 0.4-1.0) from oxidizing elemental sulfur (S(0)) blocks is an environmental concern in regions where S(0) is stockpiled. In this study, the locations, controls, and rates of H(2)SO(4) production in commercial-scale S(0) blocks ( approximately 1-2 x 10(6) m(3)) in northern Alberta, Canada, were estimated. In situ modeling of O(2) concentrations ([O(2)]) suggest that 70 to >97% of the annual H(2)SO(4) production occurs in the upper 1 m of the blocks where temperatures increase to >15 degrees C during the summer. Laboratory experiments show that S(0) oxidation rates are sensitive to temperature (Q(10) = 4.3) and dependent on the activity of autotrophic S(0)-oxidizing microbes. The annual efflux of SO(4) in drainage water from a S(0) block (5.5 x 10(5) kg) was within the estimated range of SO(4) production within the block (2.7 x 10(5) to 1.2 x 10(6) kg), suggesting that H(2)SO(4) production and removal rates were approximately equal during the study period. The low mean relative humidity within the block (68%; SD = 17%; n = 21) was attributed to osmotic suction from elevated H(2)SO(4) concentrations and suggests a mean in situ pH of approximately -2.1. The low pH of drainage waters was attributed to the mixing of fresh infiltrating water and low-pH in situ water. Heat generation during S(0) oxidation was an important factor in maintaining elevated temperatures (mean, 11.1 degrees C) within the block. The implications of this research are relevant globally because construction methods and the physical properties of S(0) blocks are similar worldwide.

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Oxidation of elemental-S in coastal-dune sands and soils

Cited by 17 publications

References 6 publications

Influence of sulfur and nitrogen fertilzer on the uptake of iron, manganese, and zinc by corn plants grown in calcareous soil

Influence of sulfur and nitrogen fertilzer on the uptake of iron, manganese, and zinc by corn plants grown in calcareous soil

Oxidation of micronized elemental sulphur in soil

Controls and Rates of Acid Production in Commercial‐Scale Sulfur Blocks

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