| 摘要 |
There is provided a method for producing biomethane comprising the steps of: providing a source of biogas, compressing the biogas using a water piston (20a-d) to cause contaminants to dissolve in the water; extracting purified compressed biomethane. Also provided is a method a treating biomass comprising the steps of: providing biomass; pre-treating the biomass by exposing it to a fluid under pressure; and reducing the pressure of the biomass/fluid. Apparatus for conducting the methods is also provided. |
