## 3 Results and Discussion
### DTF Experiment Results
#### 3.2.1 NOx Emission Propensity Analyses in DTF Experiments
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Sample**} & \multirow{2}{*}{**Country**} & \multicolumn{4}{c}{**Proximate Analysis**} & \multicolumn{4}{c}{**Calorific**} & \multirow{2}{*}{**Ultimate Analysis (\#ad basis, wt \%)**} & \multicolumn{2}{c}{**Atomic**} \\  & & & \multicolumn{3}{c}{**(as/rec basis, wt \%)**} & \multicolumn{3}{c}{**Fuel**} & \multicolumn{3}{c}{**Value**} & \multicolumn{3}{c}{**Ultimate Analysis (\#ad basis, wt \%)**} & \multicolumn{3}{c}{**Ratio (\(\star\))**} \\  & & & **Moi.** & **WM** & **FC** & **Ash** & **HHV** & **LHV** & **C** & **H** & **O** & **N** & **S** & **H/C** & **Q/C** \\ \hline
12 & Modalenen & Australia & 1.86 & 29.03 & 52.3 & 16.81 & 1.8 & 6737 & 6612 & 84.71 & 5.13 & 7.82 & 1.74 & 0.6 & 0.73 & 0.14 \\
13 & NCA & Australia & 13.68 & 29.88 & 47.85 & 8.59 & 1.6 & 7036 & 6073 & 78.85 & 5 & 13.31 & 2.25 & 0.59 & 0.76 & 0.25 \\
14 & Noble & South Africa & 3.19 & 26.39 & 55.39 & 15.03 & 2.1 & 6613 & 6402 & 84.65 & 4.94 & 8.22 & 1.49 & 0.71 & 0.7 & 0.15 \\
15 & Rio & Australia & 3.82 & 30.59 & 51.63 & 13.96 & 1.69 & 7009 & 6741 & 82.58 & 5.43 & 9.22 & 2.15 & 0.62 & 0.79 & 0.17 \\
16 & Trafigura & South Africa & 3.94 & 26.83 & 51.43 & 17.8 & 1.92 & 6375 & 6124 & 83.1 & 4.68 & 9.65 & 1.5 & 1.08 & 0.68 & 0.17 \\
17 & Trafigura & Australia & 6.76 & 29.64 & 47.56 & 16.04 & 1.6 & 6607 & 6160 & 8273 & 5.25 & 9.37 & 1.68 & 0.97 & 0.76 & 0.17 \\
18 & Trafigura & Australia & 4.87 & 30.52 & 47.29 & 17.32 & 1.55 & 6611 & 6289 & 83.65 & 5.4 & 7.64 & 2.36 & 0.94 & 0.77 & 0.14 \\
19 & Tugmusky & Russia & 4.14 & 35.59 & 45.59 & 14.68 & 1.28 & 6802 & 6520 & 82.44 & 5.72 & 9.16 & 2.27 & 0.51 & 0.83 & 0.17 \\
20 & Vitol & Colombia & 9.68 & 36.5 & 47.46 & 6.36 & 1.3 & 7147 & 6455 & 78.53 & 5.22 & 14.68 & 1 & 0.57 & 0.8 & 0.28 \\ \hline \hline \end{tabular} Note. Moi.: Moisture, VM: Volatile matter, FC: Fixed carbon, as-rec: as-received, daf: dry and ash-free.  
\end{table} 
Table 1: _Cont._Figure 4: Relation between CR concentration and FR/FN of the samples. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**No.**} & \multirow{2}{*}{**Sample**} & \multirow{2}{*}{\begin{tabular}{c} **Fuel-N to NOx** \\ **(CR) (+)** \\ \end{tabular} } & \multicolumn{2}{c}{**NOx Concentration**} & \multirow{2}{*}{**No.**} & \multirow{2}{*}{\
\begin{tabular}{c} **Coal** \\ **Sample** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Fuel-N to** \\ **NOx (CR) (-)** \\ \end{tabular} } & \multicolumn{2}{c}{**NOx Concentration**} \\ \hline
1 & Anglo & 0.112 & 161.65 & 11 & Mercurai & 0.105 & 193.72 \\
2 & Clermont & 0.172 & 304.59 & 12 & Moolarben & 0.151 & 244.39 \\
3 & Cloud & 0.018 & 40.16 & 13 & NCA & 0.067 & 150.14 \\
4 & peak & 0.107 & 225.35 & 14 & Noble & 0.172 & 245.36 \\
5 & Glencore & 0.041 & 87.28 & 15 & Rio & 0.098 & 202.26 \\
6 & Indominco & 0.054 & 95.08 & 16 & Trafigura & 0.124 & 178.63 \\
7 & Lanna & 0.097 & 107.63 & 17 & Trafigura & 0.116 & 186.62 \\
8 & Light & 0.05 & 76.8 & 18 & Trafigura & 0.09 & 204.17 \\
9 & Light & 0.151 & 187.35 & 19 & Tugnusky & 0.073 & 147.94 \\
10 & Macquarie & 0.098 & 147.22 & 20 & Vitol & 0.143 & 132.49 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Fuel-N to NOx values and DTF NOx concentration at the exit. Figure 3: Relation between NOx concentration and fuel-N (**a**), moisture (**b**), and fixed carbon (**c**).