Energy-Based Evaluations on Eucalyptus Biomass Production

Table 4

Alternatives for soil pH control.

System parameter	Scenario
	Lime	Ash	Sludge
Input mass of pH amendment (kg ha^−1 rotation^−1)	1000	3000	7000
Input emergy of pH amendment (sej ha^−1 rotation^−1)	1,68E16	2,84E16^†	6,40E16^‡
UEV of the obtained product (sej J^−1)	9,02E02	9,56E02	1,12E03
EYR	2,54	2,34	1,95
ELR	0,65	0,75	1,05
EIR	0,65	0,75	1,05

^†Based on organic matter content = (3,0E6 g ha⁻¹) * (0,3363 g MO g⁻¹) * (5,4 kcal g⁻¹) * (4186 J kcal⁻¹) * (1,2E5 sej J⁻¹ [6] = 9,45E11 sej kg⁻¹. Ash composition by [28].
^‡Based on organic matter content = (7,7E6 g ha⁻¹) * (0,29584 g MO g⁻¹) * (5,4 kcal g⁻¹) * (4186 J kcal⁻¹) * (1,2E5 sej J⁻¹ [6] = 8,31E11 sej kg⁻¹. Sludge composition by [29].