# Cationic and Anionic Dye Adsorption on a Natural Clayey Composite
## 3 Results and Discussion
### Adsorption Kinetic
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline  & & & & & & & & & & & \\ \hline
**adsorbent** & **Dye** & **\(q_{e}^{\rm exp}\)** & **\(q_{e}\)(mg/g)** & **\(k_{1}\)(min\({}^{-1}\))** & **\(R^{2}\)** & **\(q_{e}\)(mg/g)** & **\(k_{2}\)(g/mg\(\cdot\)min)** & **\(R^{2}\)** & **\(K_{spd}\)(mg/g)** & **\(C\)(mg/g)** & **\(R^{2}\)** \\ \hline  & 15 & 2.760 & \(3.293\pm 0.113\) & \(0.262\pm 0.093\) & 0.944 & \(2.831\pm 0.105\) & 0.186 \(\pm 0.026\) & 1.000 & \(0.005\pm 0.007\) & \(2.731\pm 1.210\) & 0.251 \\  & 30 & 4.384 & \(4.983\pm 0.145\) & 0.272 \(\pm 0.087\) & 0.984 & \(4.629\pm 0.275\) & 0.152 \(\pm 0.038\) & 0.998 & \(0.052\pm 0.007\) & \(5.045\pm 1.249\) & 0.174 \\
0.25 & 45 & 7.100 & \(7.575\pm 0.387\) & 0.194 \(\pm 0.009\) & 0.972 & \(7.102\pm 0.643\) & 0.196 \(\pm 0.028\) & 0.999 & \(0.128\pm 0.021\) & \(8.313\pm 1.267\) & 0.699 \\  & 60 & 9.300 & \(10.766\pm 0.553\) & 0.246 \(\pm 0.082\) & 0.980 & \(9.548\pm 1.151\) & 0.267 \(\pm 0.047\) & 0.997 & \(0.249\pm 0.025\) & \(12.128\pm 1.412\) & 0.929 \\  & 75 & 11.267 & \(12.754\pm 0.673\) & 0.273 \(\pm 0.112\) & 0.969 & \(11.641\pm 1.700\) & 0.600 \(\pm 0.052\) & 0.996 & \(0.434\pm 0.029\) & \(16.094\pm 1.737\) & 0.983 \\ \hline  & 15 & 1.442 & \(1.627\pm 0.159\) & 0.418 \(\pm 0.067\) & 0.958 & \(1.456\pm 0.032\) & 0.465 \(\pm 0.038\) & 0.999 & \(0.001\pm 0.0003\) & \(1.414\pm 0.987\) & 0.455 \\
0.50 & 30 & 2.795 & \(2.729\pm 0.053\) & 0.271 \(\pm 0.050\) & 0.983 & \(2.862\pm 0.108\) & 0.127 \(\pm 0.021\) & 0.999 & \(0.001\pm 0.0003\) & \(2.749\pm 0.673\) & 0.496 \\
0.50 & 45 & 4.015 & \(4.195\pm 0.114\) & 0.276 \(\pm 0.085\) & 0.964 & \(4.086\pm 0.213\) & 0.161 \(\pm 0.021\) & 0.999 & \(0.003\pm 0.002\) & \(2.433\pm 0.215\) & 0.210 \\  & 60 & 5.092 & \(5.352\pm 0.162\) & 0.252 \(\pm 0.105\) & 0.982 & \(5.190\pm 0.341\) & 0.190 \(\pm 0.030\) & 1.000 & \(0.075\pm 0.0029\) & \(5.858\pm 0.736\) & 0.843 \\  & 75 & 6.233 & \(6.593\pm 0.195\) & 0.221 \(\pm 0.112\) & 0.988 & \(6.322\pm 0.507\) & 0.850 \(\pm 0.068\) & 0.999 & \(0.120\pm 0.0102\) & \(7.522\pm 0.785\) & 0.906 \\ \hline  & 15 & 0.957 & \(1.353\pm 0.254\) & 0.334 \(\pm 0.120\) & 0.969 & \(0.963\pm 0.017\) & 1.271 \(\pm 0.098\) & 1.000 & \(0.001\pm 0.0002\) & \(0.959\pm 0.178\) & 0.446 \\
0.75 & 45 & 2.793 & \(3.496\pm 0.245\) & 0.244 \(\pm 0.154\) & 0.959 & \(3.239\pm 0.106\) & 0.351 \(\pm 0.012\) & 0.999 & \(0.010\pm 0.0052\) & \(1.885\pm 0.165\) & 0.500 \\  & 60 & 3.689 & \(3.684\pm 0.096\) & 0.381 \(\pm 0.076\) & 0.999 & \(3.722\pm 0.183\) & 0.264 \(\pm 0.027\) & 0.999 & \(0.013\pm 0.0008\) & \(3.784\pm 0.978\) & 0.857 \\  & 75 & 4.336 & \(4.531\pm 0.187\) & 0.246 \(\pm 0.089\) & 0.976 & \(4.386\pm 0.248\) & 0.228 \(\pm 0.038\) & 1.000 & \(0.048\pm 0.0092\) & \(4.857\pm 0.132\) & 0.982 \\ \hline \end{tabular}
\end{table} 
Table 7: Results of the kinetic models considered for CNB—Basic Navy Blue Dye 2 RN. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline  & & & & & & & & & & & \\ \hline
**adsorbent** & **Dye** & **\(q_{e}^{\rm exp}\)** & **\(q_{e}\)(mg/g)** & **\(k_{1}\)(min\({}^{-1}\))** & **\(R^{2}\)** & **\(q_{e}\)(mg/g)** & **\(k_{2}\)(g/mg\(\cdot\)min)** & **\(R^{2}\)** & **\(K_{spd}\)** & **\(C\)(mg/g)** & **\(R^{2}\)** \\
**(g/50 mL)** & **(mg/g)** & **\(k_{1}\)(min\({}^{-1}\))** & **\(R^{2}\)** & **\(q_{e}\)(mg/g)** & **\(k_{2}\)(g/mg\(\cdot\)min)** & **\(R^{2}\)** & **\(K_{spd}\)** & **\(C\)(mg/g)** & **\(R^{2}\)** \\ \hline  & 15 & 2.634 & \(2.522\pm 0.167\) & \(10.228\pm 0.895\) & 0.986 & \(2.627\pm 0.043\) & \(1.253\pm 0.901\) & 0.999 & \(0.007\pm 0.004\) & \(2.669\pm 0.085\) & 0.280 \\  & 30 & 5.589 & \(5.412