Fig. 7.

Graphs of R ₀ − R (left), RL (middle) and R _tot − R ₀ (right) versus time on a semi-logarithmic scale for L(0) = 30, 100, 300, 900 mg/L and R(0) = R ₀ and RL(0) = 0 mg/L. The parameters are listed in Table 3. In the middle figure, the dashed line indicates the baseline R ₀ and the dotted line the level R _*. In the right figure the dotted line indicates R _* − R ₀