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5-030-AirshedSulphur-ModelingScenario

Author(s): Brian Winkel

SIMIODE - Systemic Initiative for Modeling Investigations and Opportunities with Differential Equations

Keywords: sulphur pollution airshed hydrogen sulfide sulfur dioxide

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Abstract

Resource Image Temperature inversions and low wind speeds trap air pollutants in a mountain valley for a period of time. Gaseous sulfur compounds are a significant air pollution problem. We offer a model for analysis to predict long-term levels of levels of polutants.

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Article Context

Resource Type
Differential Equation Type
Technique
Qualitative Analysis
Application Area
Course
Course Level
Lesson Length
Technology
Approach
Skills
Key Scientific Process Skills
Assessment Type
Pedagogical Approaches
Vision and Change Core Competencies - Ability
Principles of How People Learn
Bloom's Cognitive Level

Description

Temperature inversions and low wind speeds can trap air pollutants in a mountain valley for an extended period of time. Gaseous sulfur compounds are often a significant air pollution problem, but their study is complicated by their rapid oxidation. Hydrogen sulfide, H2S, oxidizes into sulfur dioxide, SO2, which turns into a sulfate. A model is proposed for determining the concentration x(t) and y(t) of H2S and SO2, respectively, in a fixed air shed.

Questions considered include:

Solve the equations and estimate the concentration levels that could be reached under prolonged air pollution.

What effect does this model show if we were to reduce  the production rate of SO2?

Does the original amount of either compound effect the long-term amount of the respective compound?

 

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Authors

Author(s): Brian Winkel

SIMIODE - Systemic Initiative for Modeling Investigations and Opportunities with Differential Equations

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