Volume/Mass of SO2 released from a Sodium Bisulphite Solution?

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In summary, the conversation discusses the need to determine the ventilation requirements for a Sodium Bisulfite storage room in order to comply with COSHH regulations. The formation of SO2 from the oxidation of NaHSO3 with air is mentioned, as well as the composition of the vapor cloud above the bisulfite solution. Available data is also provided, including temperature, vapor pressure, SO2 vapor pressure, solution density, and spillage volume. The speaker suggests seeking help from a professional engineer or industrial hygienist for accurate and reliable information regarding fume extraction and ventilation in the storage room.
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jus_thom
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The aim is to work out the ventilation requirements for the Sodium Bisulfite (NaHSO3) storage room to ensure COSHH compliance.

From my understanding, the oxidation of NaHSO3 with air results in the formation of SO2.

The vapor cloud above the bisulfite solution is composed of SO2 and H2O.

Available Data
Temperature : 293 K
Vapor Pressure: 4kPa (H2O + SO2)
SO2 Vapor Pressure: 0.9 kPa
Solution Density: 1280 kg/m3
Spillage Volume: 1 m3

Please let me know if any additional info is required.
 
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Welcome to PF. This is a question that should be answered by a local professional engineer or industrial hygienist. Just computing dilution of a spill (a big spill!) isn't enough. The physical layout and method for fume extraction in non-spill(notmal) conditions are important too and you can't be assured of getting reliable answers from strangers on the internet. Thread closed.
 
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1. How is the volume/mass of SO2 released from a Sodium Bisulphite Solution determined?

The volume/mass of SO2 released from a Sodium Bisulphite Solution is determined by measuring the amount of Sodium Bisulphite Solution used and calculating the molar ratio of Sodium Bisulphite to SO2. This can be done using a titration method or through chemical equations.

2. What factors can affect the release of SO2 from a Sodium Bisulphite Solution?

The release of SO2 from a Sodium Bisulphite Solution can be affected by temperature, pressure, concentration of the solution, and the presence of other chemicals or impurities. These factors can influence the rate of reaction and the efficiency of the release process.

3. How does the concentration of the Sodium Bisulphite Solution impact the volume/mass of SO2 released?

The concentration of the Sodium Bisulphite Solution directly affects the volume/mass of SO2 released. A higher concentration of the solution means there is more Sodium Bisulphite available to react with and release SO2, resulting in a higher volume/mass of SO2 released.

4. What safety precautions should be taken when working with SO2 released from a Sodium Bisulphite Solution?

SO2 is a toxic gas and can cause irritation to the eyes, nose, and throat. When working with SO2 released from a Sodium Bisulphite Solution, it is important to wear protective gear such as goggles, gloves, and a mask. It is also important to work in a well-ventilated area to avoid inhaling high concentrations of the gas.

5. Can the volume/mass of SO2 released from a Sodium Bisulphite Solution be controlled?

Yes, the volume/mass of SO2 released from a Sodium Bisulphite Solution can be controlled by adjusting the concentration of the solution, the temperature and pressure of the environment, and the rate of reaction. It is important to carefully monitor and control these factors to ensure safe and efficient release of SO2.

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