Design and economics of a hybrid membrane-temperature swing adsorption process for upgrading biogas

► A hybrid membrane-temperature swing adsorption process for upgrading biogas to pipeline quality methane is presented. ► Using an objective function a multi-stage process involving temperature swing adsorption and membranes was optimized. ► Techno-economic analysis showed that for processing 200 Nm3/h biogas stream, a payback time on the investment was 6.8 months.