In Situ Transesterification of Spirulina Microalgae to Produce Biodiesel Using Microwave Irradiation

Table 1

Levels for independent variables for selected factors designed through CCD.

Factors	Units	Symbols	Variable levels
			(-1.6818)	-1	0	1	(1.6818)
Catalyst concentration			0.32	1	2	3	3.6818
Methanol			4.000	6	9	12	14.00
Reaction time	Min		1	3	6	9	11.0