TDA Research wins EPA award for biogas technology

By Staff | October 08, 2012

The U.S. EPA awarded Colorado-based TDA Research Inc. with a $300,000 contract under its Small Business Innovation Research program competition to support the demonstration of a proprietary biogas purification technology. The award is for Phase II work. TDA was awarded funding for Phase I of the program by EPA in 2011.

The technology is a vacuum swing adsorption system that upgrades biogas to pipeline specification. The process uses a novel, low-cost, high capacity CO2 adsorbent. The system features low methane loss, as more than 95 percent of the methane that enters the system is sent to the pipeline. Additional features of the system include low capital and operating costs.

TDA developed the proprietary adsorbent over several years. It is specifically designed to remove CO2 from gas steams. The technology has been shown to remove 95 to 98 percent of the CO2 from biomass. The material also removes water from the biogas stream, bringing the moisture content down to 150 parts-per-million.