Skip to main content

View full-text article in PMC

. 2022 Oct 20;7(43):38347–38360. doi: 10.1021/acsomega.2c03150

Table 5. Langmuir and Freundlich Model Parameters of Pb(II) and Al(III) Adsorption on GO and FGO Adsorbents.

metal ion		Pb(II)		Al(III)
adsorbent		GO	FGO	GO	FGO
Langmuir model	equation of state	y = −0.031x + 3.655	y = −0.031x + 1.769	y = −0.008x + 0.216	y = −0.001x + 0.074
Langmuir model	R²	0.868	0.9007	0.634	0.409
Freundlich model	equation of state	y = 2.076x + 1.414	y = 1.884x + 1.737	y = 1.420x + 0.491	y = 1.155x + 1.128
	R²	0.999	0.999	0.987	0.979
	k_f (mg/g)	25.94179	54.57579	3.097419	13.42765
	n	0.48	0.53	0.7	0.89
Temkin model	equation of state	y = 82.778x – 221.57	y = 62.837x – 202.43	y = 66.802x – 65.951	y = 51.933x + 0.2666
Temkin model	R²	0.887	0.862	0.953	0.913