Production of Biodiesel from Nonedible Parkia biglobosa Oil under Acidic Condition

Table 3

Properties of Parkia biglobosa biodiesel compared to standards of Europe and United States and Ghana Standard Authority.

Property	Method	ASTM Std. D6751	EN 14214	Ghana Std. Authority	Determined value
Cetane number	ASTM D6890	≥47	≥51	47 min	51
Kinematic viscosity (mm^2/s; 40°C)	ASTM D445	1.9–6.0	3.5–5.0	1.5–6.5	4.1
Oxidative stability (h)	EN 14112	≥3	≥6	—	3.1
Cloud point (°C)	GB/T510	−15 to 16	—	—	−1
Pour point (°C)	GB/T3535	−3 to 12	—	+15 max	−1
Flash point (°C)	ASTM D93	≥93	≥120	66 min	155
Sulphur content (%, w/w)	ASTM D4294	≤0.05	0.020	0.05 max	0.004
Ash content (%, w/w)	GB/T508	≤0.02	≤0.02	0.1 max	0.019
Acid value (KOH mg/kg)	ASTM D664-01	≤0.5	≤0.5	1.0 max	0.456
Water (mg/kg)	D6304	≤0.05	≤0.05	0.05 max	0.07
Density (20°C)	SH/T0248	—	860–900	—	868
Iodine value (g/100)	EN 14111	≤120	≤120	—	137
Copper strip corrosion (50°C, 3 h)	ASTM D 130-94	≤No.3a	≤No.1a	—	1a
Free glycerine (%, w/w)	EN 1405	≤0.02	≤0.020	—	0.002
Total glycerine (%, w/w)	SH/T0796	0.24	≤0.25	—	0.16

Source: lab analysis (2021).