An Investigation of Biodiesel Production from Wastes of Seafood Restaurants

Table 6

Physicochemical properties of the produced biodiesel using CaO prepared from waste MS and CS compared to international standards of biodiesel and Egyptian petro-diesel standard specifications.

Test	Unit	Produced biodiesel		Egyptian perto-diesel standards	Biodiesel; EN14214	Biodiesel; D-6751
		Mollusks shells; CaO	Crabs shells; CaO
Density at 15.56°C	g/cm^3	0.8914	0.9003	0.82–0.87	0.86–0.9	—
Specific gravity		0.8924	0.9011	—	—	—
API		27.06	25.53	—	—	—
Kinematic viscosity at 40°C	cSt	5.5	7.6	1.6–7	3.5–5	1.9–6
Pour point	°C	−2	−2	4.5	—	—
Cloud point	°C	1	1	—	—	—
Total acid number	mg KOH/g	0.6	0.7	Nil	<0.5	<0.8
Total S	wt%	0.003	0.006	<1.2	<0.01	<0.05
Water content	ppm	312	300	1500	<500	<500
Flash point	°C	148	143	>55	>101	>130
Calorific value	MJ/Kg	38.15	35.55	>44.3	32.9	—
Iodine number	mg I2/100 g	105	108	—	<120	—