SSA and pore size distribution of RC300–700, BC300–700, and MC300–700.

Biochar	aSSA (m2 g−1)	bMPA (m2 g−1)	cESA (m2 g−1)	dTPV (cm3 g−1)	eMPV (cm3 g−1)	fAPD (nM)	SSA/OC (m2 g−1)
RC300	7.981	0.000	18.645	2.06 × 10−2	0.000	10.351	14.532
RC400	13.562	0.000	17.566	2.12 × 10−2	0.000	6.275	24.674
RC500	22.445	16.692	13.727	2.84 × 10−2	0.015	4.621	39.375
RC600	106.163	89.301	23.441	9.52 × 10−2	0.073	3.382	173.575
RC700	141.124	102.772	29.728	1.14 × 10−1	0.084	3.234	222.774
BC300	4.143	0.000	15.987	1.35 × 10−2	0.000	9.823	5.681
BC400	15.641	9.064	9.889	1.56 × 10−2	0.008	3.983	20.144
BC500	52.525	35.745	22.130	5.01 × 10−2	0.031	3.827	63.732
BC600	199.483	155.331	33.565	1.53 × 10−1	0.126	3.244	226.876
BC700	340.062	188.506	61.485	2.13 × 10−1	0.157	2.515	378.486
MC300	8.766	0.000	16.006	2.86 × 10−2	0.000	13.071	19.154
MC400	15.212	0.000	18.368	2.96 × 10−2	0.000	7.783	33.5943
MC500	21.061	5.162	21.389	3.77 × 10−2	0.006	7.163	49.6047
MC600	58.703	32.323	38.805	7.21 × 10−2	0.030	4.054	132.446
MC700	166.121	61.621	74.493	1.39 × 10−1	0.056	3.343	397.045

^aSSA: specific surface area.

^bMPA: micropore area.

^cESA: external surface area.

^dTPV: total pore volume.

^eMPV: micropore volume.

^fAPD: average pore diameter.