CASE STUDY In many instances, hydrogen sulfide gas is produced as a byprod- uct of water treatment or raw material manufacturing processes. If left untreated, the corrosive gas can be detrimental. Most facili- ties use scrubbers to neutralize the harmful gas prior to atmospheric release. This is why a pulp processing company wanted to install a new H 2 S vertical packed bed scrubber measuring 26' in diameter and 55' in height at one of their facilities in Alberta, Canada. In operation since the late 1980s, the pulp mill has been capturing and converting captured biogases for onsite renewable electricity usage. As a way to filter and capture some of these gases for renewable electricity, this type of scrubber uses air pressure and water to recirculate the captured gases into the

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