hydrothermal co-liquefaction of biomass and plastic wastes into biofuel: Study on catalyst property, product distribution and synergistic effects

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, Nb) catalysts. The HTL treatments of PJ PP (0-75 wt.%) were investigated in both sub supercritical water conditions. An excellent synergy between was observed even subcritical conditions (97.6% at 340 °C 25% to PJ), while alone only the optimum temperature, substitution found be 420 respectively, 46.5% yield, high deoxygenation (65.1%), carbon recovery (78.9%) when Nb/Al2O3 as catalyst. in-depth analysis physicochemical properties product distribution respect each catalyst PP/PJ ratio are discussed detail. Among all, performed well remarkable recyclability up 10 cycles. produced mixture due its low oxygen content is very promising upgraded precursors chemicals transportation biofuels.