Official Journal of the Japan Wood Research Society
Table 4 Constituents and amount of VOCs released during each period of conventional drying (Russian Pinus sylvestris)
VOCs and MC | Concentration of VOCs (mg/m3 of exhaust gas) | Total (mg/m3 of wood) | ||||
|---|---|---|---|---|---|---|
0–4 h | 4–8 h | 8–12 h | 12–20 h | 20–24 h | ||
Formaldehyde | 0.47 | 0.51 | 0.71 | 0.10 | 0.12 | 1.33 |
n-Propanal | 1.50 | 3.50 | – | – | – | 3.48 |
n-Hexanal | 0.34 | 3.70 | 1.79 | 0.34 | 0.31 | 4.49 |
Acraldehyde | 0.87 | 0.87 | 0.24 | 0.52 | 0.52 | 2.10 |
Iso-valeraldehyde | 0.44 | 0.48 | 0.12 | 0.30 | 0.22 | 1.09 |
n-Valeraldehyde | 0.32 | 2.44 | 0.40 | 0.26 | 0.32 | 2.59 |
Benzaldehyde | 0.08 | 1.31 | 1.77 | 0.90 | 0.61 | 3.24 |
α-Pinene | 4.05 | 42.90 | 26.66 | 40.50 | 16.22 | 90.50 |
Myrcene | 0.03 | 0.96 | 1.54 | 0.58 | 0.76 | 2.68 |
β-Pinene | 1.55 | 2.19 | 1.03 | 1.62 | 0.81 | 5.00 |
α-Phellandrene | 0.04 | 0.15 | – | 0.12 | – | 0.22 |
Limonene | – | 1.63 | 2.42 | 0.38 | 0.35 | 3.32 |
1-Heptene | 0.50 | 0.54 | 0.13 | 0.34 | 0.28 | 1.24 |
n-Heptane | 0.67 | 0.76 | 0.19 | 0.44 | 0.39 | 1.70 |
2,4-Dimethyl hexane | 0.08 | 0.69 | 0.11 | 0.06 | 0.04 | 0.67 |
Average MC % | 55.86 | 42.28 | 31.98 | 16.44 | 10.2 | |