H2S is a natural by-product of which process?

Prepare for the IC "A" School Test on Airflow, H2S, and Refrigerants. Utilize flashcards and multiple-choice questions with detailed hints and explanations to ensure success. Get exam-ready today!

Multiple Choice

H2S is a natural by-product of which process?

Explanation:
Hydrogen sulfide is produced when sulfur-containing organic matter is broken down by anaerobic bacteria. In wastewater systems, sewage undergoes digestion in oxygen-poor conditions, and these microbes release H2S as a by-product. That makes wastewater the typical source of H2S in many safety contexts, since sewer gas and digester gas can accumulate this toxic gas. While natural gas can contain H2S as a contaminant, and sulfur compounds exist in soil or air, they aren’t produced by a process in the same way as wastewater digestion, so wastewater is the natural source in this context.

Hydrogen sulfide is produced when sulfur-containing organic matter is broken down by anaerobic bacteria. In wastewater systems, sewage undergoes digestion in oxygen-poor conditions, and these microbes release H2S as a by-product. That makes wastewater the typical source of H2S in many safety contexts, since sewer gas and digester gas can accumulate this toxic gas. While natural gas can contain H2S as a contaminant, and sulfur compounds exist in soil or air, they aren’t produced by a process in the same way as wastewater digestion, so wastewater is the natural source in this context.

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