The Detroit News.
Sour gas is unusable natural gas, containing hydrogen and other impurities.
The biggest change will be the injection of waste gas into a deep well. In the original process, caustic soda was used as a scrubbing mechanism to reduce the amount of sulfur in the waste gas, resulting in hydrogen sulfide, which needs to be incinerated. While incinerating is 99.5 percent efficient, the hydrogen sulfide may occasionally emit a sulfur odor, Germane said. Deborah Davis Locker is a Metro Detroit free-lance writer.