Emergy Analysis and Sustainability Efficiency Analysis of Different Crop-Based Biodiesel in Life Cycle Perspective

Table 7

Emergy analysis table for jatropha-based biodiesel.

Stage	Type	Item	Data	Reference	Transformity (sej/unit)	Reference	Solar emergy (sej)
Plantation and reap	R	Sunlight (J)	0.15𝐸+13	Calculated	1.00𝐸+00	[5]	0.15𝐸+13
		Rain geopotential (J)	0.17𝐸+09	Calculated	4.70𝐸+04	[5]	0.80𝐸+13
		Rain chemical potential (J)	0.17𝐸+10	Calculated	3.05𝐸+04	[5]	0.52𝐸+14
		Wind (J)	0.28𝐸+10	Calculated	1.50𝐸+03	[6]	0.42𝐸+13
	N	Topsoil loss	0.38𝐸+09	Calculated	7.40𝐸+04	[5]	2.81𝐸+13
	F	Water (kg)	10705350	Statistics	4.65𝐸+08	[6]	4.98𝐸+15
		Nitrogen (kg)	87	Statistics	2.40𝐸+13	[5]	2.09𝐸+15
		Phosphate (kg)	174	Statistics	2.02𝐸+13	[5]	3.51𝐸+15
		Diesel (kg)	255	Estimated	3.04𝐸+12	[5]	7.75𝐸+14
		Human labor (h)	200	Estimated	1.1𝐸+12	[5]	2.2𝐸+14
		Jatropha management fee ($)	225.56	Estimated	1.18𝐸+13	[8]	2.66𝐸+15
Jatropha oil production	F	Electricity (J)	4.91𝐸+08	Statistics	3.36𝐸+05	[8]	1.65𝐸+14
Biodiesel production	F	MeOH (kg)	391	Statistics	1.76𝐸+12	[8]	6.88𝐸+14
		NaOH (kg)	8	Statistics	6.38𝐸+12	[8]	5.10𝐸+13
		H2O (kg)	1000	Estimated	4.65𝐸+08	[6]	4.65𝐸+11
		H3PO4 (kg)	6.84	Statistics	2.65𝐸+12	[9]	1.81𝐸+13
		Electricity (J)	3.02𝐸+07	Statistics	3.36𝐸+05	[8]	1.01𝐸+13
		Human labor (h)	800	Estimated	1.1𝐸+12	[5]	8.8𝐸+14