Using dry ice or liquid CO2 as a diffuser gas results in smaller diffuser pipes.

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Multiple Choice

Using dry ice or liquid CO2 as a diffuser gas results in smaller diffuser pipes.

Explanation:
Understanding how gas properties affect bubble formation helps here. CO2 is denser than air, so when it is released through a diffuser into water, the gas jet behaves differently and tends to break up into smaller bubbles. Smaller bubbles provide more surface area for gas transfer, so a diffuser can achieve the same transfer with a smaller orifice. That’s why using dry ice or liquid CO2 as the diffuser gas often leads to using smaller diffuser pipes.

Understanding how gas properties affect bubble formation helps here. CO2 is denser than air, so when it is released through a diffuser into water, the gas jet behaves differently and tends to break up into smaller bubbles. Smaller bubbles provide more surface area for gas transfer, so a diffuser can achieve the same transfer with a smaller orifice. That’s why using dry ice or liquid CO2 as the diffuser gas often leads to using smaller diffuser pipes.

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