To apply pseudo second order kinetic on the biosorption of Cu+2 onto WNSP a plot between t/qt versus t was obtained as shown in Fig.
The value of correlation of determination for Cu+2 biosorption onto WNSP was extremely high (R2= 0.
Table-2: %Removal and separation factor for various initial concentrations for biosorption of Cu+2 on WNSP.
Values of RL were in typical range of 0 and 1 on all the initial concentrations indicating favorable biosorption of Cu+2 onto WNSP in range of 15-100 mg.
A comparison of WNSP with other biosorbents has been shown in Table 3.
Table-3: Comparison of WNSP with other biosorbents for Cu(II) removal.
K-1 which indicated that process of adsorption of Cu+2 upon WNSP may be considered as physiosorption .
Table-4: Isotherm parameters and R2 data for different adsorption models for biosorption of Cu+2 on WNSP.