Volatilization of hydrogen sulfide from a quiescent surface

Feroni, Rita de Cassia; Santos, Jane Méri; Reis, Neyval Costa

doi:10.2166/wst.2012.382

Cited by 4 publications

(3 citation statements)

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“…Resistance to transport through a crust is related to the porosity of the crust (de Cassia Feroni et al., 2012). There was no trend in r s over the summer until the 2 days of measurement after August 10.…”

Section: Resultsmentioning

confidence: 99%

“…Transport of H 2 S through the slurry liquid is due to molecular diffusion (Arogo, et al., 1999; Olesen & Sommer, 1993, convection through shearing action at the liquid/air interface (de Cassia Feroni et al., 2012), convection of bubbles formed when H 2 S production exceeds liquid molecular diffusion (Ni et al., 2009), and buoyant convection (MacIntyre et al., 2002). Shearing by the wind moving over the slurry surface decreases the resistance to atmospheric transport (Arogo et al., 1999), increases the mixing within the slurry, and possibly bursts bubbles at the surface of the manure.…”

Section: Introductionmentioning

confidence: 99%

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Effects of atmospheric and manure surface conditions on H₂S emissions from an in‐ground finisher hog manure slurry tank

Grant

Boehm

2023

J of Env Quality

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Hydrogen sulfide (H 2 S) emitted by livestock operations can be detrimental to human health. The storage of hog manure is a significant agricultural source of H 2 S emissions. H 2 S emissions from a ground-level Midwestern hog finisher manure tank were measured for 8-20 days each quarter over a 15-month period. After excluding 4 days with outlier emissions the mean daily emission was 1.89 g H 2 S m −2 day −1 . Mean daily emission was 1.39 g H 2 S m −2 day −1 when the slurry surface was liquid and 3.00 g H 2 S m −2 day −1 when crusted. Emissions however were not significantly different whether the surface was liquid or crusted when differences in temperature were considered. Diurnal variation in emissions was not correlated with air temperature, water vapor saturation deficit, or wind speed when the manure surface was crusted but was positively correlated with these variables when the surface was not crusted. Daily H 2 S emissions were modeled according to two-film theory incorporating resistance approach with limited success. Additional emissions measurements with greater documentation of the manure liquid composition and crust characteristics are needed to assess the component transport resistances in the emissions model.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of atmospheric and manure surface conditions on H₂S emissions from an in‐ground finisher hog manure slurry tank

Grant

Boehm

2023

J of Env Quality

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“…Except by Andreão et al (2019), authors have been using a constant contaminant flow rate or a constant concentration value as a boundary condition at the liquid-gas interface for mass transfer investigations, as an alternative to monophasic system simulations. Since these surface-imposed boundary conditions are not realistic, as the volatilization of chemical compounds such as H 2 S depends on the flow velocity at the liquid-gas interface (Feroni et al, 2012), the alternative for monophasic system simulations is to use algebraic models. Andreão et al (2019) showed the potential use of algebraic models as a boundary condition at the liquid-gas interface.…”

Section: Introductionmentioning

confidence: 99%

CFD modeling of different mass transfer coefficients on hydrogen sulfide emission in a flux chamber

Andreão

Feroni

2021

Environ Sci Pollut Res

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Hydrogen sulfide (H 2 S) is commonly used as an indicator for odorous gas emission monitoring in wastewater treatment plants. The H 2 S emission estimations can be performed using algebraic mathematical models or carrying out measurements at the source, with the dynamic flux chamber, for example. This work brings together these two methodologies in a computational fluid dynamics analysis. Fifteen liquid-phase mass transfer coefficient ( k L ) models were initially evaluated in establishing, at the liquid-gas interface in a flux chamber, an H 2 S emission flux based on the friction velocity field from three different inlet flows (2, 5, and 10 L min −1 ). Ten k L models were fully simulated, and the numerical results were compared with available experimental data. The higher the inlet flow, the higher the friction velocity at the interface, and the higher the H 2 S emission. The H 2 S emission was also strongly dependent on the constant coefficients of the existing k L models. Small variability on those coefficients generates considerable changes in emissions at the interface. Few and different models performed well in describing the available concentration data at the outlet sampling probe for different inlet flows, which shows there is still no single model capable of representing all simulated friction velocity ranges (0.005 to 0.017 m s −1 ).

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Influence of the fetch parameter on results from empirical correlations for estimating odorous emissions at passive liquid surfaces

Prata

Calvo

Boncardo³

et al. 2016

Water Science and Technology

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Passive liquid surfaces in wastewater treatment plants may be potential sources of odorous emissions. This study investigates the occurrence and significance of deviations that may originate from the use of the effective diameter as fetch parameter in the empirical correlations utilised by the WATER9 model to estimate odorous emissions at passive liquid surfaces. A sensitivity analysis was performed using benzene as a model compound and considering representative conditions of wind speed and wind alignment. The gas-film mass transfer coefficient (k) was found relatively in sensitive to the choice of the fetch parameter, deviating less than 15% for aspect rations up to 15. The calculation of the liquid-film mass transfer coefficient (k) was much more sensitive (positive extreme of 126.98% and negative extreme of -54.80%), partially because of the use of different equations for different fetch-to-depth ratios. For more volatile compounds, such as benzene, these discrepancies will be significantly manifested in the estimated emission rate. When appropriate, the use of the actual fetch instead of the effective diameter is recommended.

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Volatilization of hydrogen sulfide from a quiescent surface

Cited by 4 publications

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Effects of atmospheric and manure surface conditions on H₂S emissions from an in‐ground finisher hog manure slurry tank

Effects of atmospheric and manure surface conditions on H₂S emissions from an in‐ground finisher hog manure slurry tank

CFD modeling of different mass transfer coefficients on hydrogen sulfide emission in a flux chamber

Influence of the fetch parameter on results from empirical correlations for estimating odorous emissions at passive liquid surfaces

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Volatilization of hydrogen sulfide from a quiescent surface

Cited by 4 publications

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Effects of atmospheric and manure surface conditions on H2S emissions from an in‐ground finisher hog manure slurry tank

Effects of atmospheric and manure surface conditions on H2S emissions from an in‐ground finisher hog manure slurry tank

CFD modeling of different mass transfer coefficients on hydrogen sulfide emission in a flux chamber

Influence of the fetch parameter on results from empirical correlations for estimating odorous emissions at passive liquid surfaces

Contact Info

Product

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Effects of atmospheric and manure surface conditions on H₂S emissions from an in‐ground finisher hog manure slurry tank

Effects of atmospheric and manure surface conditions on H₂S emissions from an in‐ground finisher hog manure slurry tank