What role do carbon canisters play in vapor recovery systems?

• A. They measure emissions
• B. They absorb and store vapors
• C. They enhance visual monitoring
• D. They are used for liquid cooling

Answer: (B)

In vapor recovery systems, carbon canisters are primarily designed to absorb and store vapors that are emitted from sources such as gasoline during fueling operations. These canisters are made of activated carbon, which has a high surface area and excellent adsorption properties. When vapors are produced, the canisters capture these emissions, preventing them from being released into the atmosphere. This not only helps in controlling and reducing air pollution but also allows for the potential recovery and reuse of the captured vapors.

By effectively sequestering vapors that could otherwise contribute to air quality issues, carbon canisters play a critical role in compliance with environmental regulations and in promoting sustainable practices within the industry. They do not measure emissions, enhance visual monitoring, or provide liquid cooling, which distinguishes their function within vapor recovery systems.