hydrothermal co-liquefaction of biomass and plastic wastes into biofuel: Study on catalyst property, product distribution and synergistic effects
Article
Mukundan, Swathi, Wagner, Jonathan L., Annamalai, Pratheep K., Ravindran, Devika Sudha, Krishnapillai, Girish Kumar and Beltramini, Jorge. 2022. "hydrothermal co-liquefaction of biomass and plastic wastes into biofuel: Study on catalyst property, product distribution and synergistic effects." Fuel Processing Technology. 238. https://doi.org/10.1016/j.fuproc.2022.107523
| Article Title | hydrothermal co-liquefaction of biomass and plastic wastes into biofuel: Study on catalyst property, product distribution and synergistic effects |
|---|---|
| ERA Journal ID | 3884 |
| Article Category | Article |
| Authors | Mukundan, Swathi, Wagner, Jonathan L., Annamalai, Pratheep K., Ravindran, Devika Sudha, Krishnapillai, Girish Kumar and Beltramini, Jorge |
| Journal Title | Fuel Processing Technology |
| Journal Citation | 238 |
| Article Number | 107523 |
| Number of Pages | 9 |
| Year | 2022 |
| Publisher | Elsevier |
| Place of Publication | Netherlands |
| ISSN | 0378-3820 |
| 1873-7188 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.fuproc.2022.107523 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0378382022003630 |
| Abstract | This study reports an efficient conversion route for prosopis juliflora (PJ) biomass into high-quality bio-oil through catalytic hydrothermal liquefaction (HTL) process with systematically substituted hydrogen-rich plastic waste ‘polypropylene (PP)’, and using alumina supported metal oxide (Mo, Ni, W, and Nb) catalysts. The HTL treatments of PJ with PP (0-75 wt.%) were investigated in both sub and supercritical water conditions. An excellent synergy between PP and PJ was observed even in subcritical conditions (97.6% synergy at 340 °C at 25% PP to PJ), while efficient liquefaction of PP alone was observed only in the supercritical conditions. The optimum temperature, and PP substitution were found to be 420 °C and 25% respectively, with 46.5% bio-oil yield, high deoxygenation (65.1%), and carbon recovery (78.9%) when using Nb/Al2O3 as the catalyst. An in-depth analysis of physicochemical properties and the bio-oil product distribution with respect to each catalyst and PP/PJ substitution ratio are discussed in detail. Among all, the Nb/Al2O3 catalyst performed well with remarkable recyclability up to 10 cycles. The produced bio-oil mixture due to its low oxygen content is very promising to be upgraded to precursors for chemicals and transportation biofuels. |
| Keywords | hydrothermal liquefaction; Biomass waste ; Plastic waste ; Synergy; Biofuels; Nb2O5 |
| ANZSRC Field of Research 2020 | 300705. Forestry biomass and bioproducts |
| 340504. Organic green chemistry | |
| 401102. Environmentally sustainable engineering | |
| Byline Affiliations | Loughborough University, United Kingdom |
| Cochin University of Science and Technology, India | |
| University of Queensland | |
| Queensland University of Technology |
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