. 2014 Dec 3;9(12):e113888. doi: 10.1371/journal.pone.0113888

Table 3. Sorption of NH₄ ⁺-N and NO₃ ⁻-N by W-BC500, C-BC500 and P-BC500 with different treatments in 50 mg L⁻¹ aqueous solutions.

Biochars	Q_(NH4+) (mg g⁻¹)			Q_(NO3-) (mg g⁻¹)
	Non-washed	Acid-washed	DI water-washed	Non-washed	Acid-washed	DI water-washed
W-BC500	0.63b	0.27a	0.33a	−0.25a	0.037bc	0.021b
C-BC500	2.12c	0.45b	0.92bc	−0.36a	0.058c	0.032bc
P-BC500	0.73b	0.43ab	0.54ab	−0.31a	0.042bc	0.024b

Note: Different letters indicate significant difference for the results and the adsorbed amounts of NH₄ ⁺-N and NO₃ ⁻-N were compared separately.

Table 3. Sorption of NH4 +-N and NO3 −-N by W-BC500, C-BC500 and P-BC500 with different treatments in 50 mg L−1 aqueous solutions.