The FTIR spectrum of PVA/CS nanofiber was shown in Fig. 1(a). The band at 3255.32 cm−1 was corresponded to -OH stretching and the peaks at 1025.6 and 1450.04 cm−1 for the -C-O band. The peaks at 3445.32 cm-1, 2965 cm-1, 1640.01cm-1, 1598.7 cm-1, and 1361 cm-1 are due to amine NH symmetric vibration, C-H vibration, deformation vibration of the absorbed water molecules, stretching vibration of amino group of chitosan and vibration of C-H, respectively. The peaks at 890.1 and 1100 cm-1 was attributed to saccharide structure of chitosan. The broad peak at 1025 cm-1 indicated C-O stretching vibration [17-20]. A peak at 2965 cm−1 was observed in the FTIR spectrum of the animated PVA/CS/DETA/EDA (Fig. 1(b)) and was related to the C=N group. The intensity of the peak decreased when a new N-H group was introduced to the surface of the PVA/CS/DETA/EDA.
…show more content…
q= 3∫_0^R▒(q_i r^2 dr)/R^3 (2)
The adsorption isotherm is used to relate the concentration qs and Cs. The equilibrium adsorption at external surface (qs) is studied using two-parameter Langmuir isotherm. q_s= (Q_m K_L C_s)/(1+K_L C_s ) (3)
The boundary layer mass transfer equation in batch system is as: dq/dt=(3k_f R(C-C_s ))/(D_s ρ(1-ε)) (4)
The equation of material balance for slurry adsorption system is studied using
q= 3∫_0^R▒(q_i r^2 dr)/R^3 (2)
The adsorption isotherm is used to relate the concentration qs and Cs. The equilibrium adsorption at external surface (qs) is studied using two-parameter Langmuir isotherm. q_s= (Q_m K_L C_s)/(1+K_L C_s ) (3)
The boundary layer mass transfer equation in batch system is as: dq/dt=(3k_f R(C-C_s ))/(D_s ρ(1-ε)) (4)
The equation of material balance for slurry adsorption system is studied using