UPM new challenge accomplished: biomass supply from contingency GFFs

A new challenge has been met by the Technical University of Madrid (Spain, UPM) within the production implementation activities of 2021/2022 of the Life Biomass C+ Project. In order to ensure the supply of biomass for bioconversion activities, UPM has been implemented a contingency plan since the Covid-19 crisis. The plan addressed the establishment of Green Floating Filters (GFFs) in the facilities of UPM (Madrid, Spain), simulating constructed wetlands of Typha domingensis Pers., which were maintained in oligotrophic conditions at the open air.  More specifically, the installation developed in 2021 had an area of 800 m2 and consisted of five channels with GFFs. In the 2021 season, the annual growth cycle extended from April to November, a month in which cattails entered dormancy. In wintertime, the harvest of GFFs biomass was carried out, once the starch content in rhizomes peaked. Altogether, the total supply of submerged biomass from two seasons of UPM contingency GFFs attained 1.6 tons dry mass, available for bioconversion to ethanol.