Development of Wood Apple Shell (Feronia acidissima) Powder Biosorbent and Its Application for the Removal of Cd(II) from Aqueous Solution

Table 3

Isotherm parameters for Cd(II) biosorption by WAS.

Model	Values
Langmuir
𝑄𝑚 (mg g^−1)	32.071
𝑏 (l mg^−1)	0.211
𝑅^2	0.9812
Freundlich
𝐾𝑓 (mg g^−1)	7.932
𝑛 (g L^−1)	2.745
𝑅^2	0.9682
Dubinin-Radushkevich
𝑄𝑚 (mg g^−1)	25.058
𝐸	8.838
𝑅^2	0.8408