Biogas P2X

Challenge

Through Power-to-Gas, Nature Energy will explore the possibility of increasing the production of green gas using biological methanation. Challenges include, among other things, mapping physical/operational limitations when integrating a biogas plant and an electrolyzer system.

Solution

The goal of the project is to demonstrate PTX on a large scale, where all biogas from one full-scale reactor of 9,500 m3 will be methanized. The methanation will occur using a biological trickle filter and will be the largest ever constructed. The design and operation of the facility will be based on a successful pilot project that was completed in 2 x 1 m3 reactor volumes.

Impact

By constructing a biological trickle filter (1,200 m3) at Nature Energy Glansager, a biological conversion of CO2 and H2 into CH4 will be possible, thereby increasing the production of green gas by over 70% as the methane content of 55% CH4 will be increased to 95% CH4. A filter of this size will reduce CO2 emissions by 7,500 tons per year. The methanation of biogas is a crucial and necessary step toward ensuring that all methane in the gas grid comes from renewable energy sources.