## 3 Results and Discussion
### Treatment with Acetone
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline  & \(\beta_{0}\) & \(c\) & \(t\) & \(T\) & \(s/L\) & \(c\) & \(T\) & \(c\) & \(s/L\) & \(t\) & \(T\) & \(s/L\) & \(c^{2}\) & \(T^{2}\) & \(R^{2}\) & \(R^{2}_{adj}\) & \(p\)-Value \\ \hline _cel_, \% & 82.23 & 5.19 & \(-\)2.07 & 9.04 & 2.38 & & & \(-\)2.78 & \(-\)4.05 & & & 0.98 & 0.97 & \(<\)0.001 \\ _lig_, \% & 10.02 & \(-\)5.07 & \(-\)0.61 & \(-\)1.95 & \(-\)3.17 & & & 2.36 & & & & 0.99 & 0.98 & \(<\)0.0001 \\ _Yc_, \% & 41.16 & 4.48 & 2.53 & 2.54 & \(-\)2.85 & 11.82 & \(-\)8.17 & & & 3.28 & \(-\)4.51 & 0.98 & 0.97 & \(<\)0.0001 \\ _Yl_, \% & 88.02 & 5.88 & 0.56 & 2.76 & 2.78 & & \(-\)1.50 & \(-\)2.00 & & & & 0.99 & 0.98 & \(<\)0.0001 \\ \hline \end{tabular}
\end{table} 
Table 6: Parameters of the models obtained for treatment with acetone and the corresponding regression coefficients. \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline  & & **Real Values** & & & **Coded Values** & & **Composition** & **\% Elimination** \\ \cline{2-10}
**Test** & **c** & **t** & **T** & **s/L** & **c** & **t** & **T** & **s/L** & **Cellulose, \%** & **Lignin, \%** & **Cellulose** & **Lignin** \\ \hline ACE-1 & 33 & 5 & 150 & 1/15 & \(-\)1 & \(-\)1 & 0 & 0 & 77.3 & 16.1 & 49.0 & 81.8 \\ ACE-2 & 67 & 5 & 150 & 1/15 & \(+\)1 & \(-\)1 & 0 & 0 & 89.7 & 5.9 & 34.4 & 92.9 \\ ACE-3 & 33 & 15 & 150 & 1/15 & \(-\)1 & +1 & 0 & 0 & 76.8 & 15.0 & 31.3 & 82.9 \\ ACE-4 & 67 & 15 & 150 & 1/15 & \(+\)1 & +1 & 0 & 0 & 85.2 & 4.4 & 64.0 & 94.5 \\ ACE-5 & 50 & 10 & 140 & 1/10 & 0 & 0 & \(-\)1 & \(-\)1 & 72.8 & 15.2 & 36.6 & 82.3 \\ ACE-6 & 50 & 10 & 160 & 1/10 & 0 & 0 & \(+\)1 & \(-\)1 & 87.3 & 10.7 & 40.8 & 87.2 \\ ACE-7 & 50 & 10 & 140 & 1/20 & 0 & 0 & \(-\)1 & +1 & 75.8 & 8.6 & 30.4 & 87.4 \\ ACE-8 & 50 & 10 & 160 & 1/20 & 0 & 0 & \(+\)1 & +1 & 93.6 & 4.3 & 36.1 & 93.4 \\ ACE-9 & 33 & 10 & 150 & 1/10 & \(-\)1 & 0 & 0 & \(-\)1 & 74.7 & 18.5 & 33.4 & 78.2 \\ ACE-10 & 67 & 10 & 150 & 1/10 & +1 & 0 & 0 & \(-\)1 & 85.6 & 9.1 & 57.3 & 92.8 \\ ACE-11 & 33 & 10 & 150 & 1/20 & \(-\)1 & 0 & 0 & \(+\)1 & 77.4 & 11.7 & 45.0 & 86.6 \\ ACE-12 & 67 & 10 & 150 & 1/20 & +1 & 0 & 0 & \(+\)1 & 90.7 & 2.1 & 36.2 & 95.2 \\ ACE-13 & 50 & 5 & 140 & 1/15 & 0 & \(-\)1 & \(-\)1 & 0 & 72.4 & 15.0 & 31.7 & 83.2 \\ ACE-14 & 50 & 15 & 140 & 1/15 & 0 & +1 & \(-\)1 & 0 & 73.4 & 8.7 & 36.7 & 88.0 \\ ACE-15 & 50 & 5 & 160 & 1/15 & 0 & \(-\)1 & +1 & 0 & 97.4 & 6.6 & 35.7 & 93.3 \\ ACE-16 & 50 & 15 & 160 & 1/15 & 0 & +1 & +1 & 0 & 87.3 & 9.7 & 40.3 & 90.1 \\ ACE-17 & 33 & 10 & 140 & 1/15 & \(-\)1 & 0 & \(-\)1 & 0 & 68.0 & 17.7 & 33.1 & 78.8 \\ ACE-18 & 67 & 10 & 140 & 1/15 & +1 & 0 & \(-\)1 & 0 & 75.8 & 7.1 & 42.7 & 91.8 \\ ACE-19 & 33 & 10 & 160 & 1/15 & \(-\)1 & 0 & +1 & 0 & 85.8 & 14.0 & 38.9 & 84.5 \\ ACE-20 & 67 & 10 & 160 & 1/15 & +1 & 0 & +1 & 0 & 95.3 & 3.6 & 49.9 & 96.1 \\ ACE-21 & 50 & 5 & 150 & 1/10 & 0 & \(-\)1 & 0 & \(-\)1 & 78.5 & 12.8 & 43.1 & 84.3 \\ ACE-22 & 50 & 15 & 150 & 1/10 & 0 & +1 & 0 & \(-\)1 & 81.2 & 11.8 & 47.1 & 86.1 \\ ACE-23 & 50 & 5 & 150 & 1/20 & 0 & \(-\)1 & 0 & +1 & 92.3 & 7.0 & 35.8 & 90.5 \\ ACE-24 & 50 & 15 & 150 & 1/20 & 0 & +1 & 0 & +1 & 78.8 & 6.4 & 40.6 & 91.1 \\ ACE-25 & 50 & 10 & 150 & 1/15 & 0 & 0 & 0 & 0 & 81.6 & 8.7 & 43.2 & 87.4 \\ ACE-26 & 50 & 10 & 150 & 1/15 & 0 & 0 & 0 & 0 & 82.4 & 9.7 & 40.2 & 88.3 \\ ACE-27 & 50 & 10 & 150 & 1/15 & 0 & 0 & 0 & 0 & 83.0 & 10.2 & 43.0 & 87.8 \\ \hline \end{tabular}
\end{table} 
Table 7: Verification of the model. \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline  & & **Real Values** & & & **Coded Values** & & & **Composition** & **\% Elimination** \\ \cline{2-10}
**Test** & **c** & **t** & **T** & **s/L** & **c** & **t** & **T** & **s/L** & **Cellulose, \%** & **Lignin, \%** & **Cellulose** & **Lignin** \\ \hline ACE-1 & 33 & 5 & 150 & 1/15 & \(-\)1 & \(-\)1 & 0 & 0 & 77.3 & 16.1 & 49.0 & 81.8 \\ ACE-2 & 67 & 5 & 150 & 1/15 & \(+\)1 & 0 & 0 & 89.7 & 5.9 & 34.4 & 92.9 \\ ACE-3 & 33 & 15 & 150 & 1/15 & \(-\)1 &