Table 2. Characterization Data of Activated Carbon and Biochars^a.

parameter	AC	BB	MB	PSB
pHDI	10.06 ± 0.04	9.89 ± 0.06	7.94 ± 0.06	7.97 ± 0.03
pHPZC	10.01 ± 0.03	9.27 ± 0.01	7.58 ± 0.07	7.69 ± 0.07
iodine number (mg/g)	106.5	104.2	52.3	21.5
BET surface area (m2/g)	136.02	191.95	11.74	2.46
pore volume (cm3/g)	0.1098	0.1038	0.0065	0.0006
pore size (Å)	19.52	21.64	55.00	15.56
DOC (mg/L)	0.9	1.6	0.6	1.3
ultimate analysis (% wt)
C	86.0	77.2	68.0	72.0
H	4.2	3.5	4.3	4.8
N	0.3	0.5	0.8	0.7
S	0.1	0.3	0.2	0.1
O	9.4	18.5	26.7	22.4
O/C	0.11	0.24	0.39	0.30
H/C	0.05	0.05	0.06	0.07
XRF analysis (oxide % wt)
Ca	18.30	7.39	84.83	84.44
K	60.95	76.82	10.05	6.02
Cl	3.40	2.83	4.26	0.73
S	0.21	3.49	0.86	0.74
Si	11.90	4.92	ND	7.61
P	0.62	4.55	ND	0.46
Al	4.62	ND	ND	ND
Pb	ND	ND	ND	ND
Cd	ND	ND	ND	ND

^aND: not detected.