Influence of particle size and pyrolysis conditions on yield, density and some textural parameters of chars prepared from holm-oak wood

Adsorption kinetics of zinc in multicomponent ionic systems

“…Proximate analysis data (moisture, volatile matter, and ashes) were determinated by a thermogravimetric method [20] using a Mettler TA-300 system, while the fixed carbon content was obtained by difference. Elemental analysis (C, H, N, S, O) was carried out in the Instituto Nacional del Carbon (CSIC, Oviedo, Spain) using a LECO microanalyzer, provided with VTF-900 and CHNA-932 detectors, the oxygen content being estimated separately.…”

Experiments on the pyrolysis of large beechwood particles in fixed beds

“…Similar investigations were conducted by [12] on various biomass materials, by [13] and by [14] on holmoak sawdust with particle sizes of 0.64 mm. Experimental results for larger particles, such as cubes of 20 mm and prisms (20 mm × 20 mm × 80 mm) can also be found in [14]. Various agricultural residues in a packed bed of 40 mm diameter are treated by conventional pyrolysis in [15].…”

“…Although the experimental conditions, i.e., wood type, particle size, heating rate and residence times, given in the literature are quite different from those underlying work, the author's results are in good agreement with the data cited in Table 7. Particle sizes range from 1 to 3 mm of fir wood [15], 0.62-1 mm of holm oak [13], ∼1 mm of pine sawdust [24] to 20 mm of holm oak [14]. Table 7 provides an overview of the pyrolysis conditions.…”

“…Elemental char composition as function of final pyrolysis temperature, given on dry base. Literature values from[13][14][15][16].…”

Wet charred wood: a preliminary study of the material and its conservation treatments

“…Additionally, the total inorganic content of the material was calculated after combustion at 750 C for 6 h (Prior and Williams, 1985;Rossen and Olson, 1985;Valenzuela-Calahorro et al, 1987;Caple and Murray, 1991). The percentage of inorganic content (IC) was estimated using the following equation (ASTM D1762-84):…”