Abstract: A reactor and process for removing hydrogen sulfide from gas. The reactor vessel contains an oxidizing solution and packing, where the packing fill about 25% to about 75% of the liquid volume of the vessel.

Abstract: A process purifies raw biogas created from a renewable source into pipeline grade natural gas and/or D.O.T. specification, or other predetermined specification, gas. The automated scrubbing processed employed and the particular attributes of the system allow the system to function under extreme weather conditions by employing specific tools to control the temperature of the scrubbing water to allow for efficient and effective removal of the carbon dioxide gas. The system also employs specific measures to use recycled scrubbing water, thus eliminating the need for excessive water generally needed to economically employ this type of scrubbing process. The recycled water is continuously de-carbonated to allow the recycled water stream to effectively scrub the raw biogas. Treated gas from the process is then dried, and compressed for introduction into storage tanks or a natural gas pipeline delivery system.