What chemical is commonly used in a wet scrubber system to address hydrogen sulfide (H2S) gas?

Sodium hydroxide is often used in a wet scrubber system to address hydrogen sulfide (H2S) gas due to its effectiveness as a strong base that can react with acidic gases. When sodium hydroxide is introduced into the scrubber, it neutralizes hydrogen sulfide, forming sodium sulfide, which is less toxic and easier to handle. This chemical reaction not only helps to control H2S emissions but also improves the overall air quality by removing harmful gases from exhaust streams.

In addition, sodium hydroxide is accessible and relatively cost-effective, making it a suitable choice for wastewater treatment facilities looking to mitigate odor and gas-related issues effectively. Its high solubility in water allows for efficient operation in wet scrubber systems, enhancing the absorption of H2S and providing a practical solution for operators managing these types of gases.