Table 1 Weight compositions of the pyrolysates obtained from PE, BW, and BW/PE mixtures at 350 °C.
(BW + PE)-based weight composition, FW | BW-based weight composition, FW, stda | |||||
|---|---|---|---|---|---|---|
BW:PE (w:w) | ||||||
0:100 | 40:60 | 60:40 | 100:0 | 40:60 | 60:40 | |
Weight-based mass balance/wt% | ||||||
Gasb | 0.4 ± 0.0f | 2.2 ± 0.1 | 2.7 ± 0.1 | 4.1 ± 0.1 | − | − |
THF solublec | 6.7 ± 1.1 | 26.7 ± 1.3 | 38.3 ± 1.4 | 61.4 ± 1.1 | − | − |
THF insolublec | 2.6 ± 1.0 | 4.6 ± 1.0 | 7.1 ± 1.1 | 7.0 ± 1.0 | − | − |
Melted PE + charc | 89.7 ± 1.9 | 65.6 ± 1.6 | 51.4 ± 1.5 | 26.5 ± 1.0 | − | − |
Total/wt% | 99.4 ± 3.0 | 99.1 ± 4.0 | 99.5 ± 4.1 | 99.0 ± 3.2 | − | − |
Mass balance of identified products/wt% | ||||||
Gas b | 0.4 ± 0.0 | 2.2 ± 0.1 | 2.7 ± 0.1 | 4.1 ± 0.1 | / | / |
CO | − | 0.4 ± 0.0 | 0.6 ± 0.0 | 1.0 ± 0.0 | 0.9 ± 0.0 | 1.0 |
CO2 | − | 1.5 ± 0.0 | 1.9 ± 0.0 | 3.0 ± 0.0 | 3.7 ± 0.0 | 3.1 |
CH4 | − | − | + | + | − | + |
C2 | + | + | + | + | / | / |
C3 | 0.1 ± 0.0 | + | + | + | / | / |
C4– | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.1 ± 0.0 | / | / |
Tar b | − | 7.1 ± 0.5 | 9.8 ± 0.7 | 12.7 ± 1.5 | 17.8 ± 1.3 | 16.3 ± 1.2 |
1 | − | 3.7 ± 0.4 | 4.8 ± 0.5 | 5.6 ± 0.6 | 9.3 ± 1.0 | 8.0 ± 0.8 |
2 | − | 0.1 ± 0.0 | 0.2 ± 0.0 | 0.4 ± 0.1 | 0.3 ± 0.0 | 0.4 ± 0.0 |
3 | − | 0.2 ± 0.1 | 0.5 ± 0.1 | 1.0 ± 0.1 | 0.5 ± 0.3 | 0.8 ± 0.2 |
4 | − | 0.3 ± 0.1 | 0.5 ± 0.0 | 0.8 ± 0.1 | 0.6 ± 0.2 | 0.8 ± 0.0 |
5 | − | 0.1 ± 0.0 | 0.1 ± 0.0 | 0.1 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 |
6 | − | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.3 ± 0.0 | 0.5 ± 0.0 | 0.4 ± 0.0 |
7 | − | 0.3 ± 0.0 | 0.6 ± 0.0 | 0.7 ± 0.1 | 0.8 ± 0.0 | 0.9 ± 0.1 |
8 | − | + | + | + | + | + |
others | − | 2.2 ± 0.1 | 2.9 ± 0.1 | 3.7 ± 0.1 | 5.5 ± 0.3 | 4.8 ± 0.1 |
Oil b | 0.4 ± 0.1 | 0.3 ± 0.0 | 0.3 ± 0.0 | − | / | / |
Melted PE 3 | 89.7 ± 1.9 | − | − | − | / | / |
Char c | − | − | − | 26.5 ± 1.0 | / | / |
Melted PE + Char3 | − | 65.6 ± 1.6 | 51.4 ± 1.5 | − | / | / |
Water d | − | 5.3 ± 0.1 | 8.7 ± 0.1 | 10.8 ± 0.3 | / | / |
Identified total e | 90.5 ± 2.0 | 80.5 ± 2.3 | 72.9 ± 2.4 | 54.1 ± 2.4 | / | / |
