Table 1.

Specific surface area (SSA), total pore volume (TPV), and cation exchange capacity (CEC) of samples of biochar from different sources.

SampleŦ	SSA (m2 g−1)	TPV (m3 g−1)	CEC (cmol kg−1)
CR	43 ± 3*	4.1 × 10−8 ± 3.5 × 10−8	2 ± 0**
CS	157 ± 108	1.4 × 10−7 ± 8.5 × 10−8	13 ± 1**
OP	186 ± 89	9.4 × 10−8 ± 1.6 × 10−8	28 ± 1**
PO	173 ± 124	8.7 × 10−8 ± 1.4 × 10−8	35 ± 3**#
SB	159 ± 69	8.7 × 10−8 ± 2.3 × 10−8	7 ± 1**
WH	182 ± 103	5.5 × 10−8 ± 4.3 × 10−8	37 ± 2**#

^ŦCR = charcoal fines; CS = coconut shell; OP = orange peel; PO = palm oil bunch; SB = sugarcane bagasse; WH = water hyacinth. Anova post-hoc Tukey test (^*p < 0.1 or ^**p < 0.01)^{. #}samples PO and WH are not different between them (p > 0.01).