qe and qt = The amount of Cd(II) adsorbed onadsorbent (mg g-1) at equilibrium and at time t, respectively k1 = The rate constant for first-order adsorption (L min-1)
qe and qt = The amount of Cd(II) adsorbed onadsorbent (mg g-1) at equilibrium and at time t, respectivelyk1 = The rate constant for first-order adsorption (L min-1)