Optimization of Biosorptive Removal of Dye from Aqueous System by Cone Shell of Calabrian Pine

Table 5

Data of isotherm models for dye biosorption.

Model	Equation	Parameter	Value		SD
Freundlich			23.0384; 3.3796	0.6823	10.8889
Langmuir			66.0207; 0.3861	0.9782	3.0842
Dubinin-Radushkevich			69.5042; 3.2686	0.9654	3.5914

SD: standard deviation, (mg g⁻¹) (L mg⁻¹: a constant related to biosorption capacity, : a constant related to biosorption intensity, (mg g⁻¹): maximum monolayer biosorption capacity, (L mg⁻¹): a constant related to energy of biosorption, : separation factor, (mg g⁻¹): maximum biosorption capacity, (mol² kJ⁻²): a constant related to mean free energy of biosorption, : Polanyi potential, and (kJ mol⁻¹): mean free energy.