Advantageous characteristics of the diatom Chaetoceros gracilis as a sustainable biofuel producer

Table 6 Concentrations of four nutrient salts in sewage water and liquid fertilizer

	F/2 (ppm)	Daigo IMK (ppm)	Sewage water (ppm)	Liquid fertilizer (ppm)
Phosphate	3.46	3.66	4	200
Nitrate	54.7	146	(7)	0
Nitrite	0	0	0.5	0
Ammonium	0	0.92	18	3000

Seawater prepared with sea salts enriched with F/2 medium and with Marine Art SF-1 enriched with Daigo IMK medium and both media subjected to analysis after preparation, values for F/2 and Daigo IMK calculated from their respective recipes, liquid fertilizer diluted tenfold with pure water and centrifuged at 6500×g for 10 min to precipitate suspended materials before analysis, and nitrite presence somewhat disturbed nitrate determinations in sewage water (indicated by parentheses)

ISSN: 2731-3654