(196d) Thermochemical Biomass Processing for H2 and Biodiesel Production



Catalytic thermochemical processing of a biomass has great potential for the production of H2 and hydrocarbon fuels. This study reports subcritical aqueous phase liquefaction of biomass using homogeneous and heterogeneous catalysts for the production of H2 and biodiesel from a waste biomass. Different catalytic materials were prepared using sol-gel, solid state synthesis and wet-impregnation approaches. In the case of sol-gel approach, metal (Ni, Fe)-salt was dispersed in ethanol/water solution containing surfactants such as Brij-76/pluronic 123 and gelation was achieved using propylene oxide. As prepared material was dried, calcined at 400-600oC. Catalysts nanoparticles were also synthesized using solid state synthesis method. In another approach, mesoporous materials immobilized with Ni/Cu/Co were prepared by wet-incipient method. These catalytic materials were characterized using X-ray diffraction, Fourier transform infra-red (FTIR) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The waste paper and woody biomass substrates were treated at 200-300oC in presence of different catalysts and the production of H2 was monitored. The bio-oil obtained was recovered and treated with nanoscale catalyst materials in presence of methanol for the biodiesel production. The processed slurry obtained after catalytic aqueous phase reforming of a biomass was analyzed using TOC analyzer, GC-MS and HPLC. The results obtained on H2 and biodiesel production from a biomass will be presented.