where b is the Langmuir constant and C0 is the initial concentration of Cd2+ ions. The value of the separation parameter
RL provides important information about the nature ofadsorption. The value of RL indicated the type of Langmuir
isotherm to be irreversible (RL= 0), favorable(0 < RL< 1), linear (RL= 1) or unfavorable (RL> 1). RL
values between 0 and 1 indicate favorable absorption
(Mckay et al., 1982). From this study, The RL was found tobe 0.802053 (Table 1).
The experimental data obeyed also the Freundlich model, as
confirmed by the high determination coefficient (R2>0.951)(Table 1). As can be seen from the results, thenvalues were found
to be 1.0002. According to Kadirvelu and Namasivayam (2000),
n values between 1 and 10 represent beneficial biosorption. The
‘n’ value of Freundlich equation could give an indication on
the favorability of sorption. Kf can serve as an indicator for the
maximal metal cation uptake capacity of the algal biomass.
where b is the Langmuir constant and C0 is the initial concentration of Cd2+ ions. The value of the separation parameterRL provides important information about the nature ofadsorption. The value of RL indicated the type of Langmuirisotherm to be irreversible (RL= 0), favorable(0 < RL< 1), linear (RL= 1) or unfavorable (RL> 1). RLvalues between 0 and 1 indicate favorable absorption(Mckay et al., 1982). From this study, The RL was found tobe 0.802053 (Table 1).The experimental data obeyed also the Freundlich model, asconfirmed by the high determination coefficient (R2>0.951)(Table 1). As can be seen from the results, thenvalues were foundto be 1.0002. According to Kadirvelu and Namasivayam (2000),n values between 1 and 10 represent beneficial biosorption. The‘n’ value of Freundlich equation could give an indication onthe favorability of sorption. Kf can serve as an indicator for themaximal metal cation uptake capacity of the algal biomass.
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