Optimization to Hydrothermal Liquefaction of Low Lipid Content Microalgae Spirulina sp. Using Response Surface Methodology

Table 4

The element analysis of each sample.

	Elements (%)					HHV (MJ·kg^−1)
	C	H	N	S	O
1	69.47	8.82	6.75	0.68	14.28	33.8
2	68.13	8.68	7.05	0.57	15.57	32.8
3	69.89	8.97	7.35	0.69	13.10	34.3
4	63.64	8.26	6.94	0.77	20.40	29.9
5	72.37	9.28	7.16	0.56	10.64	36.0
6	68.51	8.70	6.93	0.56	15.30	33.0
7	66.63	8.56	7.17	0.71	16.92	31.9
8	62.49	7.91	6.93	0.49	22.18	28.6
9	65.20	8.53	6.64	0.65	18.98	31.0
10	64.07	8.08	6.67	0.54	20.64	29.7
11	65.96	8.21	6.64	0.55	18.64	30.9
12	59.93	7.59	6.60	0.52	25.35	26.7
13	69.64	8.87	7.02	0.74	13.73	34.0
14	65.27	8.37	6.96	0.56	18.84	30.8
15	67.64	8.76	6.85	0.64	16.11	32.7
16	68.08	8.68	6.88	0.63	15.72	32.8
17	67.51	8.71	6.84	0.58	16.36	32.5
18	67.91	8.78	6.87	0.61	15.83	32.9
19	68.25	8.58	6.89	0.65	15.62	32.7
20	67.66	8.69	6.87	0.60	15.90	32.6