Patent Number: 8,574,888

Title: Biological H.sub.2S removal system and method

Abstract: The present invention provides a biological H.sub.2S removal system for the treatment of process gas, comprising: a housing that receives a process gas stream through a gas inlet, the housing comprising a plurality of layers through which the process gas stream flows while it is treated for H.sub.2S removal, and a gas outlet through which a treated gas stream exits; wherein air is added to the process gas stream prior to the process gas stream entering the housing.

Inventors: Grill; Jeffrey J. (Long Beach, CA)

Assignee: Clean Energy Fuels Corp.

International Classification: A61L 9/01 (20060101)

Expiration Date: 1/05/12017