Studies on Biosorption of Methylene Blue from Aqueous Solutions by Powdered Palm Tree Flower (Borassus flabellifer)

Table 5

Kinetic values calculated for MB adsorption on PTMF (pH-6, temperature = 303 K).

First-order kinetic					Second-order kinetic
Conc. (mg/L)	𝑞𝑒 (mg/g) experiment	𝐾1 (min^−1)	𝑞𝑒 (mg/g) calculated	𝑅^2	𝑞𝑒 (mg/g) calculated	𝐾2×10^3 (g/mg·min)	𝑅^2	ℎ (mg/g·min)	𝑡1/2 (min)
50	15.73	0.01561	10.96	0.9497	16.08	2.99	0.9982	0.773	20.8
100	31.23	0.01584	23.12	0.9371	33.05	1.44	0.9942	1.572	21.0
150	46.40	0.01038	33.05	0.8817	41.59	1.11	0.9981	1.922	21.6
200	61.10	0.01133	44.19	0.8855	56.93	0.76	0.9973	2.458	23.2