Processing Magazine

Vendor completes phase testing for removal of nitrogen, oxygen from landfill treatment gas

May 7, 2012

Xebec Adsorption Inc., a provider of biogas upgrading, natural gas and hydrogen purification solutions for the clean energy market, says it has successfully completed its initial phase testing for removal of high levels of N2 and O2 in landfill and waste water treatment digester gas.

Xebec''s current BGX biogas upgrading plants deploy single-stage advanced kinetic pressure swing adsorption (kPSA) technology, capable of removing low to medium levels of N2, O2, and CO2, while maintaining superior recovery rates. The current technology has successfully proven its ability to remove medium levels of N2 and O2 at the biogas upgrading plant at the Escondido WWTP at the Hale Avenue Resource Recovery Facility in Escondido, California.

The completion of this new phase test program has allowed Xebec to increase its N2, O2 removal capability, and has validated the performance of high nitrogen and oxygen removal of up to 15% nitrogen in the feed biogas. Xebec says it will finalize the design and complete the phase testing using a two-stage PSA process, which will achieve targeted recovery rates of >90% with >10% nitrogen concentration levels in the biogas feed stream, within the next eight months.

Kurt Sorschak, President and CEO of Xebec said, "The initial phase test results verifiably demonstrate that our biogas upgrading technology will remove high levels of nitrogen and oxygen with exceptional recovery rates. After the successful completion of the test program in the second half of 2012, Xebec will offer customers an upgrading solution with superior recovery rates than currently available on the market.

Xebec is focused on the landfill and waste water treatment segment, since both generate biogas with medium to high levels of nitrogen and oxygen, and it is in these segments that Xebec''s upgrading solutions offer a clear competitive advantage to our customers.