Advances in Polymer Technology

Research Article

Oxidized Renewable Materials for the Removal of Cobalt(II) and Copper(II) from Aqueous Solution Using in Batch and Fixed-Bed Column Adsorption

Table 3

Isotherm model parameters estimated for the adsorption of Cu²⁺ and Co²⁺ on Cox and SBox (pH 5.5, 25°C, 150 rpm and 0.2 g/L Cox or SBox).


Isotherm model	Parameter	Cox-Cu²⁺	Cox-Co²⁺	SBox-Cu²⁺	SBox-Co²⁺

Experimental data		1.20 ± 0.01	0.68 ± 0.01	0.57 ± 0.00	0.37 ± 0.00
		76.14 ± 0.92	39.82 ± 0.33	36.23 ± 0.10	22.05 ± 0.25
		3.145 × 10⁻³	3.365 × 10⁻³	3.148 × 10⁻³	3.407 × 10⁻³
		0.789	0.783	0.789	0.782
	CN	4.01	7.10	7.89	12.03
Langmuir		1.17 ± 0.03	0.70 ± 0.01	0.60 ± 0.01	0.40 ± 0.00
		74.36 ± 2.11	41.24 ± 0.35	38.07 ± 0.57	23.64 ± 0.22
		30.47 ± 0.068	23.04 ± 1.09	17.93 ± 1.24	11.67 ± 0.53
		0.914	0.988	0.977	0.989
		0.908	0.987	0.974	0.988
		0.006	2.08 × 10⁻⁴	4.40 × 10⁻⁴	1.03 × 10⁻⁴
		38616.6	29430.3	22728.9	14944.3
		‒26.18	‒25.51	‒24.87	‒23.83
Freundlich		1.22 ± 0.02	0.68 ± 0.01	0.57 ± 0.01	0.37 ± 0.01
		5.43 ± 0.26	7.25 ± 0.78	6.01 ± 0.52	5.39 ± 0.43
		0.184	0.138	0.167	0.185
		0.975	0.900	0.933	0.939
		0.974	0.890	0.926	0.933
		0.002	0.002	0.001	5.89 × 10⁻⁴
Sips		1.62 ± 0.08	0.72 ± 0.01	0.64 ± 0.03	0.42 ± 0.01
		102.83 ± 5.01	42.52 ± 0.77	40.68 ± 1.59	25.01 ± 0.62
		10.71 ± 2.54	23.88 ± 1.17	17.20 ± 1.53	11.26 ± 0.58
		2.26 ± 0.15	1.19 ± 0.10	1.37 ± 0.18	1.24 ± 0.10
		0.997	0.992	0.988	0.995
		0.996	0.991	0.986	0.993
		2.27 × 10⁻⁴	1.45 × 10⁻⁴	2.47 × 10⁻⁴	5.73 × 10⁻⁵