Green Biodiesel Synthesis Using Waste Shells as Sustainable Catalysts with Camelina sativa Oil

Table 2

Fuel properties of Camelina, petroleum diesel and the ASTM biodiesel standards.

Properties	Petroleum diesel	Camelina biodiesel	Biodiesel standards (ASTM D6751)	ASTM testing method	Unit
Kinematic viscosity (40°C)	2.6	3.1	1.9–6.0	D4451	mm^2/s
Specific gravity	0.85	0.88	0.87–0.90	D287
Calorific value	42	46		D240	MJ/kg
Pour point	−20	−10	−5 to 10	D97	°C
Cetane number	46	49	47–65	D613	min