Bluemethane installs first unit with ReGenEarth

In the UK, Finacas Verdes reports British startup Bluemethane installed its first production-scale methane capture unit in partnership with ReGenEarth at a biogas plant. The technology aims to recover the residual methane present in the digestate the post-processing sludge of anaerobic digesters, which would normally be released into the atmosphere and wasting energy and contributing to emissions.

The process simulates the shaking of a soda bottle, using turbulence and pressure changes to separate the dissolved methane. The captured gas, which contains methane and carbon dioxide, can be repurposed, increasing the energy efficiency of the plant. In addition, the system allows the recirculation of the sludge, optimizing production. Return on investment includes higher generation of biogas, raw material savings and potentially the emission of avoided carbon credits.