Akeem Azeez - Fast Pyrolysis of African and European Lignocellulosic Biomasses Using Py-GC/MS and Fluidized Bed Reactor

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      Five biomasses spruce (Picea abies L.), beech (Fagus sylvatica   L.), iroko (Chlophora excelsa L.), albizia (Albizia adianthifolia   L.), and corncob (Zea mays ssp.) have been subjected to   analytical pyrolysis (Py-GC/MS) and bench-scale pyrolysis with a   fluidized bed reactor at 470 °C. The comparison of Py-GC/MS and   bench scale results revealed only small differences in the   relative concentration of single products mainly acetic acid,   hydroxyacetaldehyde, hydroxypropanone, and lignin-derived   guaiacyl and syringyl components. For European woods, organic oil   yields were approximately 57%, whereas African biomasses yielded   between 41 and 48% because of their higher mineral contents. The   analysis of bio-oil composition revealed no significant   differences between African and European biomasses. Acetic acid,   hydroxyacetaldehyde, hydroxypropanone, and levoglucosan were   found to be the largest individual components in the volatiles.   Bio-oil from corncob, having the lowest lignin content contained   high concentration of 4-vinyl-phenol, a lignin derived product.   This implied that the degradation products largely depend on the   constituents’ structure of the biomass. The higher heating value   of all bio-oils ranged 16−17 MJ/kg.

      Address (URL): http://http://pubs.acs.org/doi/abs/10.1021/ef9012856