Potentials of Biochars Derived from Bamboo Leaf Biomass as Energy Sources: Effect of Temperature and Time of Heating

Table 4

The chemical composition of bamboo leaves as a function of temperature and time of heating was measured by using energy-dispersive spectroscopy (EDS).

Element (%)	250°C/time (min)			300°C/time (min.)			350°C/time (min.)
	30	60	90	30	60	90	30	60	90
C	31.38	31.2	28.93	41.5	30.32	27.92	30.31	21.36	11.5
Si	28.13	24.43	26.34	16.19	27.82	25.96	24.43	33.15	35.78
Ratio C/Si	1.12	1.28	1.09	2.56	1.09	1.08	1.24	0.64	0.32
O	34.2	40.41	41.56	34.45	35.8	40.45	38.58	39.88	47.36
N	2.03	1.87	1.47	2.72	1.42	1.02	2.1	0.59
Na					0.01		0.02		0.16
Mg	0.43	0.29	0.07	0.27	0.55	0.71	0.24	0.7	0.94
Al	0.84	0.34	0.28	0.65	2.76	1.01	1.71	1.24	1.06
K	2.71	1.17	0.44	2.86	1.73	2.08	2.03	2.52	2.59
Ca	0.28	0.28	0.91	0.36		0.44	0.59	0.54	0.63