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Prospects of biodiesel feedstock as an effective ecofuel source and their challenges 59

Table 3.4 Yield analysis of some edible biodiesel feedstocks

Feedstock Oil yield Biodiesel yield (barrels
Edible feedstock yield (kg/ha) (kg/ha) per year per hectare)
Groundnut (Arachis 2500–2700 760 a 4.8 b
hypogaea)
Sesame (Sesamum 1000–1500 239 a 3.1 b
indicum)
Hazelnut (Corylus 1000–2200 c,d 1000 20 d
avellana)
Almond (Prunus 500 c – –
dulcis)
Olive (Olea 1000–10,000 c 300–400 c 5.4 b
europaea)
Moringa (Moringa 31,000 c 250L/ha c –
oleifera)
Rapeseed (Brassica – 764 a 5.3 b
spp.)
Sunflower 5700 c 570 a 4.3 b
(Helianthus annuus)
Soybean (Glycine 500 e 445 a 2.1 b
max)
Cotton (Gossypium – 392 a 1.5 b
spp.)
Corn (Zea mays) – 138 a –
Safflower – 662 a 3.5 b
(Carthamus
tinctorius)
Walnut (Juglans 800 c – –
regia)
Chinese tallow 14,000 c 5400 c –
(Sapium sebiferum
L.)
Oil palm (Elaeis 15,000–38,000 c 5000–8700 c 26.7 b
guineensis)
Coconut (Cocos 2000–6000 c 2000–4000 c 12.1 b
nucifera)
a
Ref. [26].
b
Ref. [27] (values were reported in barrels per year per square mile).
c
Ref. [24].
d
Ref. [28].
e
Ref. [29].
approximately 123gal of biodiesel per acre per year (4.8 barrels per hectare per year)
compared to 50gal (2.1 barrels) for soybean oil. But because peanut oil is more valu-
able on the world market, conversion of peanut oil to biodiesel is not economically
practical. There are studies underway at the University of Georgia to develop non-
edible peanuts that are high in oil and could be grown specifically for biodiesel
production.