Babassu nut residues: potential for bioenergy use in the North and Northeast of Brazil

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Table 2 Higher heating value (HHV), lower heating value (LHV), energy densities base on HHV (ED _HHV ) and LHV (ED _LHV ) and basic density (BD)

	Babassu nut residues^a	Sugar cane bagasse^b	Residues from the processing of coffee beans^b	Wood of *Eucalyptus* sp. clones (42 months)^c
BD (kg m⁻³)	1,273^(81)*	104	249	521
HHV (MJ kg⁻¹)	18.47^(0.10)	18.89	19.29	19.16
ED_HHV(GJ m⁻³)	23.51^(0.13)	1.96	4.80	9.99
LHV (MJ kg⁻¹)	17.16^(0.09)	17.32	17.71	17.74^**
ED_LHV(GJ m⁻³)	21.84^(0.12)	1.80	4.41	9.25^**

^a:observed in this study; ^b:values obtained by (Protásio et al. 2013a); ^c:average values obtained by Protásio et al. 2013b. *Figures in brackets refer to the standard deviation; **: average values calculated based on the information by Protásio et al. 2013b and the same methodology used in this study.