Sparging (chemistry) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-02-18

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Sparging_(chemistry)


00:01:01 1 Liquid chromatography
00:01:22 2 Engineering
00:02:00 3 Environmental chemistry
00:02:23 4 Metallurgy



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SUMMARY
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In chemistry, sparging, also known as gas flushing in metallurgy, is a technique which involves bubbling a gas through a liquid to remove dissolved gases (e.g. oxygen) or volatile components from the liquid. By Henry's law, the amount of dissolved gases in a liquid depend on the partial pressure of the gases exposed to the liquid. Sparging increases the gas-liquid interface and reduces the partial pressure of the dissolved gas outside the liquid by carrying it away. Many sparging processes such as solvent removal may be carried out using air, but to remove oxygen, or for sensitive solutions or molten metals, a chemically inert gas such as nitrogen, argon, or helium is used.