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Rhododendron and Japanese Knotweed: invasive species as innovative crops for second generation biofuels for the ionoSolv process†
RSC Advances Pub Date : 05/21/2021 00:00:00 , DOI:10.1039/D1RA01943K
Abstract

We investigated the potential of two terrestrial biomass invasive species in the United-Kingdom as lignocellulosic biofuel feedstocks: Japanese Knotweed (Fallopia japonica) and Rhododendron (Rhododendron ponticum). We demonstrate that a pretreatment technique using a low-cost protic ionic liquid, the ionoSolv process, can be used for such types of plant species considered as waste, to allow their integration into a biorefinery. N,N,N-Dimethylbutylammonium hydrogen sulfate ([DMBA][HSO4]) was able to fractionate the biomass into a cellulose-rich pulp and a lignin stream at high temperatures (150–170 °C) and short reaction times (15–60 minutes). More than 70–80% of the subsequent cellulose was hydrolysed into fermentable sugars, which were fermented into the renewable energy vector bioethanol.

Graphical abstract: Rhododendron and Japanese Knotweed: invasive species as innovative crops for second generation biofuels for the ionoSolv process
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