Patent ID: 6056934
Filing Date: 2000-05-02
Classification: B01D,Y02A,Y10S

Abstract:
A method for producing sulfuric acid from a H.sub.2 S-containing gas stream, comprising:introducing a H.sub.2 S-containing gas stream and oxygen containing gas into a bioscrubber through a first gas port and venting H.sub.2 S-depleted gas through a second gas port, said bioscrubber comprising at least one bioreactor vessel and acidophilic sulfur oxidizing bacteria adherent to a support medium contained by said vessel;reversing gas flow after a period of time ranging from about 12 hours to about 5 days, such that said H.sub.2 S-containing gas stream is introduced into said bioscrubber through said second gas port and said H.sub.2 S-depleted gas is vented through said first gas port; andcollecting sulfuric acid.