| Title | Upcycling furfural residues into bioethanol and pyrolytic oil through a cascading biorefinery approach |
|---|---|
| ID_Doc | 27553 |
| Authors | Elsayed, M; Madadi, M; Song, GJ; Zhou, ZH; Wang, HJ; Wang, J; Zhang, JH; Aghbashlo, M; Tabatabaei, M |
| Title | Upcycling furfural residues into bioethanol and pyrolytic oil through a cascading biorefinery approach |
| Year | 2024 |
| Published | |
| Abstract | This study presents an innovative cascade biorefinery process that efficiently converts furfural residues (FRs) into valuable bioethanol and pyrolytic oil. Two pretreatment methods, acetic acid/glycerol (R1) and sulfuric acid/ glycerol (R2), were applied to fractionate FRs biomass. Optimized pretreatment conditions increased the cellulose accessibility of FRs, enhancing porosity by 0.98-1.55 times and crystallinity by 0.99-1.27 times. Notably, maximum bioethanol titers of 27.8 and 26.5 g/L were achieved with R1 and R2, respectively, after cellulose hydrolysis of pretreated FRs. Pyrolyzing the residual lignin obtained after the enzymatic hydrolysis of pretreated FRs by R1 and R2 resulted in a bio-oil yield of 28.3 % and 27.9%, respectively. Interestingly, the energy outputs obtained from the respective methods were 10.5 and 9.6 MJ/kg, exceeding the direct pyrolysis of raw FRs (7.0 MJ/kg). The energy conversion efficiencies obtained from the respective integrated routes were 51.3 % and 47.0 %, higher than that from the direct pyrolysis of raw FRs (34.3 %). This approach can effectively promote the circular economy concept in the manufacturing sector by valorizing and upcycling FRs for bio-oil and bioethanol production. |
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