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That depends on what you want to remove it from. Usually it must be removed from exhaust gases and that is done by a scrubber. The gases pass up through a pile of specially shaped material called "media" and water flows down through the pile. The SO2 is absorbed into the water, which is then processed separately.

https://en.wikipedia.org/wiki/Scrubber

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11y ago

What else can I help you with?