Pyrolysis of an agricultural by-product: a characterization study

A. L. CUKIERMAN; P. A. DELLA ROCCA; P. R. BONELLI; E. G. CERRELLA

Biomass: A Growth Opportunity in Green Energy and Value-Added Products

PERGAMON, ELSEVIER SCIENCE

Lugar: AMSTERDAM, HOLANDA; Año: 1999; p. 1201 - 1208

Evolution of chemical and textural features characterizing shells of peanut (Arachis hypogaea) species subjected to three different pyrolysis temperature is analysed by several techniques. Surface areas of the raw material pyrolysed samples are evaluated from physical adsorption measurements employing N2 at 77 K y CO2 at 298 K. Result point to significant feature changes, which are, in general, strongly affected by pyrolysis conditions , and in particular by pyrolysis temperature. Furthermore, kinetic measurements of peanut shells pyrolysis are performed by non-isothermal thermogravimetric analysis, from ambient temperature from up to 1123 K. a kinetic model reported in the literature, which takes into account the significant chemical and physical changes occurring within the residue in the course of the pyrolysis process, as evidenced from the results of chemical and textural characterization, was applied. This model properly describes actual kinetic data over the wide ranges of temperatures used