Table 2 Release characteristic parameters of release profiles of BSA adsorption on apatite (Ap)-coated citric acid–stabilized cobalt ferrite (CFCA) (CFCA-Ap) particles
pH | Y = ktn; y = M t /M0 | Y = φb(1 - exp(-kbt)); y = M t /M0 | ||||
---|---|---|---|---|---|---|
K (h -1 ) | n | R c | φ b | k b (h -1 ) | R c | |
4.0 | 67.215 | 0.25 | 0.957 | 100.00 | 0.805 | 0.989 |
6.5 | 35.031 | 0.40 | 0.883 | 70.430 | 0.659 | 0.974 |
7.4 | 22.184 | 0.30 | 0.868 | 35.417 | 0.605 | 0.973 |