Table 1. Process conditions of supercritical CO
2
treatment (SCT)
Treatment
Process conditions
Temperature (°C)
Pressure (MPa)
Exposure time (h)
SCT 1
35
17.2
2
SCT 2
40
17.2
2
SCT 3
45
17.2
2
SCT 4
40
17.2
0.5
SCT 5
40
17.2
1
SCT 6
40
13.8
2
SCT 7
40
20.7
2