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- W4293217052 abstract "Pyrolytic conversions of biomass-to-biofuels require relatively high temperatures concerning the low energy yield of resulting biofuels. This work uses aqueous [Bmim][OAc] for pretreatment to lower the peak pyrolysis temperature of rice husk. The mass yield of bio-oil from low temperature pyrolysis (335 °C) of pretreated rice husk was enhanced by 20.28%, and the energy yield of pyrolysis for bio-oil production increased by 17.65% with pretreatment. The bio-oils obtained from pretreated rice husk were enriched in desired components such as furfural, furanone and cyclopentenones, but reduced in alcohols, phenolic derivatives and phenylfuran versus the raw rice husk. The [Bmim][OAc] pretreatment expands the cellulose I lattice and contributes to the transformation of crystalline cellulose I to amorphous chains in rice husk. The β–O–4 arylether bond cleavage in lignin and the damage of original hydrogen bonds in cellulose and hemicellulose are responsible for lowering the pyrolysis temperature and average activation energy of pyrolysis. Up to 90% of [Bmim][OAc] was recovered using a 45.0 wt% K 3 PO 4 solution and demonstrated similar effectiveness on a second batch of pretreatment. The results provide new insight into achieving higher energy conversion efficiency from lignocellulosic biomass pyrolysis with lower energy consumption for the sustainable development goals. • The cellulose I lattice was expanded to swelling state with lower crystallinity by [Bmim][OAc] pretreatment. • The pyrolysis reactivity of rice husk at lower temperature was enhanced through [Bmim][OAc] pretreatment. • Energy yield of bio-oils from 335 °C pyrolysis of pretreated rice husk was enhanced by 17.65%. • Up to 90% of [Bmim][OAc] was recovered showing similar effectiveness on second pretreatment." @default.
- W4293217052 created "2022-08-27" @default.
- W4293217052 creator A5043258883 @default.
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- W4293217052 date "2022-10-01" @default.
- W4293217052 modified "2023-10-02" @default.
- W4293217052 title "Enabling lower temperature pyrolysis with aqueous ionic liquid pretreatment as a sustainable approach to rice husk conversion to biofuels" @default.
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- W4293217052 doi "https://doi.org/10.1016/j.renene.2022.08.077" @default.
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