Table 1 Elemental composition of kraft-lignin-derived hydrochars.

Sample		C (wt%)	H (wt%)	N (wt%)	S (wt%)	O^a (wt%)
Temp. (°C)	Time (h)	C (wt%)	H (wt%)	N (wt%)	S (wt%)	O^a (wt%)
Control		62.83	5.79	0.39	1.74	29.25
175	1	65.36	5.66	0.46	1.29	27.23
	2	65.76	5.65	0.40	1.24	26.95
	3	65.73	5.64	0.41	1.20	27.02
	5	65.82	5.63	0.41	1.21	26.93
200	1	65.73	5.52	0.41	1.28	27.06
	2	66.19	5.46	0.43	1.41	26.51
	3	66.25	5.55	0.42	1.24	26.53
	5	67.02	5.58	0.43	1.23	25.73
225	1	67.24	5.58	0.43	1.13	25.62
	2	67.43	5.58	0.42	1.13	25.44
	3	67.44	5.48	0.41	1.11	25.56
	5	68.11	5.51	0.43	1.12	24.82
250	1	68.23	5.48	0.45	1.12	24.73
	2	68.64	5.54	0.47	0.92	24.43
	3	69.12	5.47	0.49	0.92	24.00
	5	69.37	5.38	0.49	0.87	23.89

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