Semi-quantitative determination of ash element content for freeze-dried, defatted, sulfated and pyrolysed biomass of Scenedesmus sp.

Table 4 Element content in the biomass ashes of Scenedesmus sp.

Elements (% by mass)	Freeze-dried		Defatted		Pyrolyzed		Sulfated
Elements (% by mass)	Mean	SD	Mean	SD	Mean	SD	Mean	SD
O	40.25^a	0.27	39.32^a	0.48	40.30^a	0.33	41.56^a	4.04
Mg	6.16^a	0.34	8.46^b	0.35	7.10^a,c	0.25	8.46^b,c	1.76
P	20.84^a	0.33	19.27^b	0.45	20.74^a	0.46	8.58^c	1.50
S	ni		ni		ni		11.51	1.76
K	7.61^a	0.19	7.10^b	0.19	7.55^a,b	0.20	2.73^c	0.65
Ca	8.65^a	0.26	7.73^b	0.18	7.91^b	0.29	3.12^c	0.60
Fe	11.01^a	0.71	11.32^a	0.25	10.50^a	0.67	15.43^b	3.45
Co	1.69^a	0.31	1.94^a	0.46	1.53^a	0.30	2.51^a	1.57
Br	2.14^a	0.09	3.21^a	0.55	2.34^a	0.47	4.69^a	3.95

ISSN: 2731-3654