Quality of Wood and Charcoal from Eucalyptus Clones for Metallurgical Use

Ramos, Diego Correa; Carneiro, Angélica de Cássia Oliveira; Tangstad, Merete; Saadieh, Raghed; Pereira, Bárbara Luísa Corradi

doi:10.1590/2179-8087.043518

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Original Article, Wood Science and Technology • Floresta Ambient. 26 (spe2) • 2019 • https://doi.org/10.1590/2179-8087.043518 copy

Quality of Wood and Charcoal from Eucalyptus Clones for Metallurgical Use

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The objectives of the present work were to determine the properties of wood and charcoal from Eucalyptus clones and assess impacts of charcoal features on the CO₂ gasification reactivity and to compare with coke reactivity. Gasification reactivity was performed using charcoal particles in a furnace setup at 820 °C, under CO₂ atmosphere. The results show that there is wood variability among evaluated clones and strong correlations between wood and charcoal properties. All charcoals had higher reactivity in comparison to coke. The decrease in porosity and increase in apparent density in Eucalyptus wood led to a slight decrease of CO2 gasification reactivity. In addition, strong positive correlation between charcoal reactivity and potassium concentration (K) was found.

Keywords:
CO₂ gasification; reductant materials; biocarbon

CLONE	Lignin^* * Extractive-free wood. Means in the column followed by the same letter do not differ at 5% of probability by the Tukey Test. (±) Standard deviation. (%)	Holocelullose (%)	Extratives (%)
CL-3	31.5 ± 1.9 a	64.5 ± 1.9 a	3.9 ± 0.02 b
CL-2	29.4 ± 0.9 a	67.2 ± 1.1 a	3.3 ± 0.07 a
CL-1	29.6 ± 0.4 a	65.8 ± 0.5 a	4.5 ± 0.03 c

Sample	Ultimate analysis (wt %)					Ratio	Proximate analysis (wt%)
Sample	C	H	S	N	O	O/C	VM	FC	Ash
CL-1	75.2 a	3.5 b	0.01 a	0.6 a	20.7 b	0.27 b	28.7 ± 0.2 b	70.9 ± 0.2 b	0.4 ± 0.01 c
CL-2	75.5 a	3.2 b	0.01 a	0.7 a	20.2 b	0.27 b	28.1 ± 0.1 b	71.3 ± 0.1 b	0.7 ± 0.02 bc
CL-3	76.4 a	3.4 b	0.01 a	0.6 a	19.6 b	0.26 b	28.9 ± 0.2 b	70.6 ± 0.3 b	0.6 ± 0.01 b
COKE	95.0 b	1.7 a	0.30 b	0.6 a	2.4 a	0.02 a	4.2 ± 0.2 a	89.0 ± 0.2 a	6.9 ± 0.2 a

Sample	Ash chemical composition (wt%)
Sample	AlO₃	Fe₂O₃	CaO	MgO	P₂O₅	MnO	K₂O	Na₂O	TiO₂	S	SiO₂
CL-1	2.0	2.5	28.1	10.1	8.4	1.2	32.0	9.5	0.1	1.5	4.6
CL-2	0.4	0.7	22.7	11.3	7.9	1.2	47.8	4.9	0.0	1.1	2.0
CL-3	1.3	1.1	31.3	8.6	8.9	3.8	31.3	9.5	0.1	0.8	3.4
COKE	17.4	15.9	14.5	8.7	0.1	0.6	0.9	2.3	0.7	4.3	34.5

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[1] Bárbara Luísa Corradi PereiraDepartamento de Engenharia Florestal, Universidade Federal de Mato Grosso – UFMT, Av. Fernando Corrêa da Costa, 2367, Boa Esperança, CEP 78060-900, Cuiaba, MT, Brasil e-mail: babicorradi@gmail.com