The University of New South Wales scientists that developed a graphene filter to improve the quality of drinking water have discovered a new application for the very thin form of carbon – the ability for graphene to purify methane from biogas produced in wastewater plants. The research team, led by Dr Rakesh Joshi of the UNSW School of Materials Science and Engineering, has demonstrated at lab-scale that graphene membranes can be used to extract methane present in biogas generated during the breakdown of organic materials in wastewater plants. More >>