Abstract
In the present study, we used a low-cost protic ionic liquid, 1-methylimidazolium chloride, to simultaneously fractionate heavy metal contaminated wood and extract the metals from the wood at elevated temperature and short reaction time.
Highlights
The production of renewable fuels and chemicals from lignocellulosic biomass in a biorefinery presents an attractive alternative to the fossil-based fuels, chemicals and materials upon which we currently rely
The protic ionic liquid (IL), 1-methylimidazolium chloride [HC1im]Cl, is a relatively lowcost Ionic liquids (ILs) because of its simple one step synthesis from an acid and a base.[44]. It was used for 6 subsequent treatments and the IL recovery was found to be 99.06 ± 0.72% overall, showing it can be recycled with minimal losses
Pulp yields remained stable in the region of 58% (42% of the mass dissolved into the IL)
Summary
The production of renewable fuels and chemicals from lignocellulosic biomass in a biorefinery presents an attractive alternative to the fossil-based fuels, chemicals and materials upon which we currently rely. Despite their conceptual advantages, biorefineries suffer economically when compared to petrochemical refining, due in part to very high feedstock costs and difficulties with feedstock acquisition at large scale. 50% versus petrol for corn and cellulosic ethanol, respectively.[1] Without land-use change, GHG emissions from cellulosic ethanol are lowered by 70% versus regular petrol, according to the study, indicating that switching to a post-consumer waste biomass feedstock for biofuel or bioechemical production could afford large CO2 savings versus regular petrol and other bio-derived alternatives. In the case of bioenergy crops such as switchgrass and Miscanthus, includes sowing, tilling, spreading of fertilizers, harvesting and baling, causing non-negligible cost and associated GHG emissions.[4]
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