Adsorption of Brilliant Green onto Luffa Cylindrical Sponge: Equilibrium, Kinetics, and Thermodynamic Studies

Table 1

Kinetic parameters of sorption of BGD on LFC.

Initial conc.	Pseudo-first-order			Pseudo-second-order				Power function			Simple Elovich
mg/L	𝑞𝑒1	𝑘1×10^−2	𝑟^2	𝑞𝑒2	𝑘2	ℎ0	𝑟^2	𝑎	𝑏	𝑟^2	𝐴	𝐵
20	1.54	0.2303	0.820	9.621	0.132	12.20	0.999	8.79	0.016	0.920	8.80	0.799
40	1.86	0.2303	0.794	19.230	0.097	35.87	1.000	17.78	0.014	0.911	17.78	1.462
80	3.07	0.4606	0.747	40.000	0.057	91.20	1.000	35.73	0.015	0.916	35.70	3.001
150	7.50	1.1515	0.966	76.920	0.011	65.08	0.999	63.39	0.025	0.977	63.26	9.046
200	17.82	1.1612	0.916	100.000	0.004	40.00	0.999	70.15	0.051	0.967	69.51	22.48

𝑘₁ = min⁻¹, 𝑞_𝑒1 = mg/g, 𝑞_𝑒2 = mg/g, 𝑘₂ = g/mg/min, 𝐵 = g/mg, 𝐴 = mg/g min.