A Novel Absorbent of Nano-Fe Loaded Biomass Char and Its Enhanced Adsorption Capacity for Phosphate in Water

Table 1

Pseudo-first-order and Pseudo-second-order adsorption kinetic constants of samples BC and Fe-BC.

Samples	𝑄𝑒,exp (mg/g)	Pseudo-first-order model				Pseudo-second-order model
		𝑄𝑒,cal (mg/g)	𝑘1 (min^−1)	𝑅^2	S.D. (%)	𝑄𝑒,cal (mg/g)	𝑘2 (gmg^−1min^−1)	𝑅^2	S.D. (%)
BC	3.58	3.34	0.508	0.905	16.22	3.52	0.211	0.967	9.51
Fe-BC	11.94	10.58	0.135	0.813	32.30	11.31	0.019	0.905	24.24