Production of Synthetic Natural Gas (SNG) from Biomass Development and operation of an integrated bio-SNG system Non-confidential version R.W.R. Zwart H. Boerrigter E.P. Deurwaarder C.M. van der Meijden S.V.B. van Paasen ECN.
http://www.biosng.com/fileadmin/biosng/user/documents/reports/e06018.pdf