Which of these methods of reducing SO 2 emissions employs spraying limestone and water in coal smokestacks?

Flue gas scrubbers use a process called flue gas desulfurization, which involves spraying limestone and water into the smokestacks to react with and remove sulfur dioxide emissions, thus reducing SO 2 emissions.

Which of these methods of reducing SO 2 emissions employs spraying limestone and water in coal smokestacks?

Flue gas scrubbers use a process called flue gas desulfurization, which involves spraying limestone and water into the smokestacks to react with and remove sulfur dioxide emissions, thus reducing SO 2 emissions.