Biosorption of Fe(II) and Mn(II) Ions from Aqueous Solution by Rice Husk Ash

Table 4

The 𝑅_𝐿 value of Fe(II) and Mn(II) in Langmuir isotherm.

Different initial concentration (mg/L)	2	5	10	20	25	30	35	40
𝑅𝐿 value of Fe(II)	0.3264	0.1623	0.0883	0.0462	0.0373	0.0313	0.0269	0.0237
𝑅𝐿 value of Mn(II)	0.3554	0.1807	0.0993	0.0522	0.0422	0.0354	0.0305	0.0268