TABLE 3.

Organic elemental composition (CHNSO) of biomass samples and solid substrate together with contents of adsorbed Ni.

Sample	C	H	N	S	O	SUM	C/N	Ni
	g kg–1							mg kg–1
1	402.80	62.71	56.62	2.76	398.23	923.11	7.11	–
2	390.76	60.95	57.34	1.44	400.88	911.37	6.82	–
3	57.73	6.43	6.10	1.55	136.56	208.36	9.47	55
4	109.10	13.46	13.28	5.39	165.31	306.53	8.22	62
5	175.74	24.72	27.50	5.72	207.08	440.75	6.39	147
6	135.43	15.88	22.05	2.08	151.86	327.30	6.14	120
7	118.31	13.80	18.83	1.22	146.53	298.68	6.28	110
8	149.87	18.44	23.94	5.71	174.13	372.08	6.26	98
9	160.58	19.61	24.29	–	166.40	370.88	6.61	59
10	167.06	20.80	27.09	2.15	168.08	385.18	6.17	43
11	165.54	22.98	26.74	–	192.37	407.63	6.19	24
12	168.97	23.33	27.29	5.08	190.74	415.40	6.19	71
13	452.89	66.08	75.23	3.78	340.55	938.53	6.02	–
14	506.22	64.74	62.63	–	320.15	953.75	8.08	–
15	231.55	30.56	38.80	2.72	217.88	521.52	5.97	140
Chlorella sp.	486.77	67.16	95.13	19.52	303.64	972.21	5.12	–

Samples 1–15 are assigned according to Table 2.